Merge pull request 'exchanges-new-case' (#46) from exchanges-new-case into master

Reviewed-on: http://git.plannaplan.pl/filipizydorczyk/backend/pulls/46

COPYING

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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/philosophy/why-not-lgpl.html>.

buisnesslogic/src/main/java/com/plannaplan/api/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Provides the classes necessary to obtain usos authentication with Oauth1
+ *
+ * @since 1.0
+ */
+package com.plannaplan.api;

buisnesslogic/src/main/java/com/plannaplan/configutils/FileReader.java

@@ -12,16 +12,29 @@ import org.apache.poi.ss.usermodel.Row;
 import com.plannaplan.models.FileData;
 
 /**
- *  FileReader is used for reading xls file from input stream.
+ * FileReader is used for reading xls file from input stream.
  */
 public class FileReader {
 
     private InputStream fileInputStream;
 
+    /**
+     * @param fileInputStream stream of stadarized file contains courses and gropups
+     *                        to import. File needs to be .xlsx file that has
+     *                        fields: zaj_cyk_id, typ, sym, nazwa, gr_nr, Mc, dzien,
+     *                        godz_od, sala, tytul, nazwisko, imie. Order doesn't
+     *                        have impact on import. Any change name of given field
+     *                        can be performed in FileToDatabaseMigrator class
+     */
     public FileReader(InputStream fileInputStream) {
         this.fileInputStream = fileInputStream;
     }
 
+    /**
+     * read data rom file
+     * 
+     * @return instance of class FileData
+     */
     public FileData read() {
 
         FileData result = null;

buisnesslogic/src/main/java/com/plannaplan/configutils/FileToDatabaseMigrator.java

@@ -16,99 +16,119 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 /**
- *  FileToDatabaseMigrator is used for migrate data from file (it reads line by line) and push it into database
+ * FileToDatabaseMigrator is used for migrate data from file (it reads line by
+ * line) and push it into database
  */
 @Component
 public class FileToDatabaseMigrator {
 
-    private static final String LECTURER_NAME_STRING = "imie";
-    private static final String LECTURER_SURNAME_STRING = "nazwisko";
-    private static final String LECTURER_TITLE_STRING = "tytul";
+        private static final String LECTURER_NAME_STRING = "imie";
+        private static final String LECTURER_SURNAME_STRING = "nazwisko";
+        private static final String LECTURER_TITLE_STRING = "tytul";
 
-    private static final String COURSE_SYMBOL_STRING = "sym";
-    private static final String COURSE_NAME_STRING = "nazwa";
+        private static final String COURSE_SYMBOL_STRING = "sym";
+        private static final String COURSE_NAME_STRING = "nazwa";
 
-    private static final String groupDay_STRING = "dzien";
-    private static final String GROUP_TIME_STRING = "godz_od";
-    private static final String ROOM_STRING = "sala";
-    private static final String CAPACITY_STRING = "Mc";
-    private static final String TYPE_GROUP= "typ";
+        private static final String groupDay_STRING = "dzien";
+        private static final String GROUP_TIME_STRING = "godz_od";
+        private static final String ROOM_STRING = "sala";
+        private static final String CAPACITY_STRING = "Mc";
+        private static final String TYPE_GROUP = "typ";
 
-    private static final String ZAJ_CYK_ID = "zaj_cyk_id";
-    private static final String GR_NR = "gr_nr";
+        private static final String ZAJ_CYK_ID = "zaj_cyk_id";
+        private static final String GR_NR = "gr_nr";
 
-    @Autowired
-    private LecturerService lecturerService;
-    @Autowired
-    private CourseService courseService;
-    @Autowired
-    private GroupService groupService;
+        @Autowired
+        private LecturerService lecturerService;
+        @Autowired
+        private CourseService courseService;
+        @Autowired
+        private GroupService groupService;
 
-    public FileToDatabaseMigrator() {
-    }
+        public FileToDatabaseMigrator() {
+        }
 
-    public void migrate(FileData data) {
-        Iterator<Row> rows = data.getRows();
-        int courseNameIndex = data.getIndexOf(FileToDatabaseMigrator.COURSE_NAME_STRING);
-        int symbolIndex = data.getIndexOf(FileToDatabaseMigrator.COURSE_SYMBOL_STRING);
+        /**
+         * insert data to database
+         * 
+         * @param data FileData imported from file
+         */
+        public void migrate(FileData data) {
+                Iterator<Row> rows = data.getRows();
+                int courseNameIndex = data.getIndexOf(FileToDatabaseMigrator.COURSE_NAME_STRING);
+                int symbolIndex = data.getIndexOf(FileToDatabaseMigrator.COURSE_SYMBOL_STRING);
 
-        int titleIndex = data.getIndexOf(FileToDatabaseMigrator.LECTURER_TITLE_STRING);
-        int surnameIndex = data.getIndexOf(FileToDatabaseMigrator.LECTURER_SURNAME_STRING);
-        int nameIndex = data.getIndexOf(FileToDatabaseMigrator.LECTURER_NAME_STRING);
+                int titleIndex = data.getIndexOf(FileToDatabaseMigrator.LECTURER_TITLE_STRING);
+                int surnameIndex = data.getIndexOf(FileToDatabaseMigrator.LECTURER_SURNAME_STRING);
+                int nameIndex = data.getIndexOf(FileToDatabaseMigrator.LECTURER_NAME_STRING);
 
-        int dayIndex = data.getIndexOf(FileToDatabaseMigrator.groupDay_STRING);
-        int timeIndex = data.getIndexOf(FileToDatabaseMigrator.GROUP_TIME_STRING);
-        int roomIndex = data.getIndexOf(FileToDatabaseMigrator.ROOM_STRING);
-        int capacityIndex = data.getIndexOf(FileToDatabaseMigrator.CAPACITY_STRING);
-        int typeGroupIndex = data.getIndexOf(FileToDatabaseMigrator.TYPE_GROUP);
+                int dayIndex = data.getIndexOf(FileToDatabaseMigrator.groupDay_STRING);
+                int timeIndex = data.getIndexOf(FileToDatabaseMigrator.GROUP_TIME_STRING);
+                int roomIndex = data.getIndexOf(FileToDatabaseMigrator.ROOM_STRING);
+                int capacityIndex = data.getIndexOf(FileToDatabaseMigrator.CAPACITY_STRING);
+                int typeGroupIndex = data.getIndexOf(FileToDatabaseMigrator.TYPE_GROUP);
 
-        int zajCykIdIndex = data.getIndexOf(FileToDatabaseMigrator.ZAJ_CYK_ID);
-        int grNrIndex = data.getIndexOf(FileToDatabaseMigrator.GR_NR);
+                int zajCykIdIndex = data.getIndexOf(FileToDatabaseMigrator.ZAJ_CYK_ID);
+                int grNrIndex = data.getIndexOf(FileToDatabaseMigrator.GR_NR);
 
-        while (rows.hasNext()) {
-            Row row = rows.next();
+                while (rows.hasNext()) {
+                        Row row = rows.next();
 
-            String courseName = row.getCell(courseNameIndex).toString().trim();
-            String symbol = row.getCell(symbolIndex).toString().trim();
+                        String courseName = row.getCell(courseNameIndex).toString().trim();
+                        String symbol = row.getCell(symbolIndex).toString().trim();
 
-            String lecturerTitle = row.getCell(titleIndex) != null ? row.getCell(titleIndex).toString().trim() : "";
-            String lecturerName = row.getCell(nameIndex) != null ? row.getCell(nameIndex).toString().trim() : "";
-            String lecturerSurname = row.getCell(surnameIndex) != null ? row.getCell(surnameIndex).toString().trim()
-                    : "";
+                        String lecturerTitle = row.getCell(titleIndex) != null
+                                        ? row.getCell(titleIndex).toString().trim()
+                                        : "";
+                        String lecturerName = row.getCell(nameIndex) != null ? row.getCell(nameIndex).toString().trim()
+                                        : "";
+                        String lecturerSurname = row.getCell(surnameIndex) != null
+                                        ? row.getCell(surnameIndex).toString().trim()
+                                        : "";
 
-            Integer zajCykId = row.getCell(zajCykIdIndex) != null ? (int) Double.parseDouble(row.getCell(zajCykIdIndex).toString().trim())
-                    : null;
-            
-            Integer grNr = row.getCell(grNrIndex) != null ? (int) Double.parseDouble(row.getCell(grNrIndex).toString().trim())
-                    : null;
+                        Integer zajCykId = row.getCell(zajCykIdIndex) != null
+                                        ? (int) Double.parseDouble(row.getCell(zajCykIdIndex).toString().trim())
+                                        : null;
 
-            int day = row.getCell(dayIndex) != null ? (int) Double.parseDouble(row.getCell(dayIndex).toString()) : 0;
-            WeekDay groupDay = WeekDay.getDay(day - 1);
-            int time = parseTimeToInt(row.getCell(timeIndex).toString());
-            String room = row.getCell(roomIndex).toString().trim();
-            int capacity = (int) Double.parseDouble(row.getCell(capacityIndex).toString());
-            GroupType typeGroup = GroupType.getType(row.getCell(typeGroupIndex).toString());
+                        Integer grNr = row.getCell(grNrIndex) != null
+                                        ? (int) Double.parseDouble(row.getCell(grNrIndex).toString().trim())
+                                        : null;
 
-            Course course = this.courseService.getCourseByName(courseName)
-                    .orElseGet(() -> this.courseService.save(new Course(courseName, symbol)));
+                        int day = row.getCell(dayIndex) != null
+                                        ? (int) Double.parseDouble(row.getCell(dayIndex).toString())
+                                        : 0;
+                        WeekDay groupDay = WeekDay.getDay(day - 1);
+                        int time = parseTimeToInt(row.getCell(timeIndex).toString());
+                        String room = row.getCell(roomIndex).toString().trim();
+                        int capacity = (int) Double.parseDouble(row.getCell(capacityIndex).toString());
+                        GroupType typeGroup = GroupType.getType(row.getCell(typeGroupIndex).toString());
 
-            Lecturer lecturer = this.lecturerService.getLecturer(lecturerTitle, lecturerName, lecturerSurname)
-                    .orElseGet(() -> this.lecturerService
-                            .save(new Lecturer(lecturerTitle, lecturerName, lecturerSurname)));
+                        Course course = this.courseService.getCourseByName(courseName)
+                                        .orElseGet(() -> this.courseService.save(new Course(courseName, symbol)));
 
-            Groups group = this.groupService.find(zajCykId, grNr).orElseGet(
-                    () -> new Groups(capacity, room, course, time, groupDay, lecturer, zajCykId, grNr, typeGroup));
-                group.update(capacity, room, course, time, null, groupDay, lecturer, typeGroup);
-                
-                this.groupService.save(group);
+                        Lecturer lecturer = this.lecturerService
+                                        .getLecturer(lecturerTitle, lecturerName, lecturerSurname)
+                                        .orElseGet(() -> this.lecturerService.save(
+                                                        new Lecturer(lecturerTitle, lecturerName, lecturerSurname)));
+
+                        Groups group = this.groupService.find(zajCykId, grNr).orElseGet(() -> new Groups(capacity, room,
+                                        course, time, groupDay, lecturer, zajCykId, grNr, typeGroup));
+                        group.update(capacity, room, course, time, null, groupDay, lecturer, typeGroup);
+
+                        this.groupService.save(group);
+
+                }
 
         }
 
-    }
+        /**
+         * 
+         * @param time time string in formaT hh:mm or hh.mm
+         * @return int time witch is minutes from 00:00
+         */
+        private static int parseTimeToInt(String time) {
+                String times[] = time.split("\\.|\\:");
+                return times.length == 2 ? Integer.parseInt(times[0]) * 60 + Integer.parseInt(times[1]) : 0;
 
-    private static int parseTimeToInt(String time) {
-        String times[] = time.split("\\.|\\:");
-        return times.length == 2 ? Integer.parseInt(times[0]) * 60 + Integer.parseInt(times[1]) : 0;
-
-    }
+        }
 }

buisnesslogic/src/main/java/com/plannaplan/configutils/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides the classes necessary to to config and import related operations in
+ * the app
+ *
+ * @since 1.0
+ */
+package com.plannaplan.configutils;

buisnesslogic/src/main/java/com/plannaplan/entities/Assignment.java

@@ -38,6 +38,15 @@ public class Assignment {
         this.group = group;
     }
 
+    /**
+     * 
+     * @param oldAssignment old assignment that we want to move to new commision
+     * @param newCommision  commsion to move assiongment
+     */
+    public static Assignment getNewFromAssignment(Assignment oldAssignment, Commision newCommision) {
+        return new Assignment(oldAssignment.getGroup(), newCommision);
+    }
+
     /**
      * If it returns trues it mesans u are assigned to group accepted by algorythm
      *
@@ -49,9 +58,10 @@ public class Assignment {
 
     /**
      * Getter of commision
+     * 
      * @return Commision Commision of given assignments
      */
-    public Commision getCommision(){
+    public Commision getCommision() {
         return this.commision;
     }
 
@@ -68,9 +78,13 @@ public class Assignment {
     public Assignment() {
     }
 
+    /**
+     * @param commision commision to set
+     */
     public void setCommision(Commision commision) {
-	this.commision = commision;
+        this.commision = commision;
     }
+
     /**
      * Id getter
      *

buisnesslogic/src/main/java/com/plannaplan/entities/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Provides all entieites that are created in database by Hibernate
+ *
+ * @since 1.0
+ */
+package com.plannaplan.entities;

buisnesslogic/src/main/java/com/plannaplan/exceptions/TokenExpiredException.java

@@ -1,9 +1,9 @@
 package com.plannaplan.exceptions;
 
+/**
+ * Excepction to be thrown when provided token is expired
+ */
 public class TokenExpiredException extends RuntimeException {
-    /**
-     *
-     */
     private static final long serialVersionUID = 1L;
 
     public TokenExpiredException(String message) {

buisnesslogic/src/main/java/com/plannaplan/exceptions/UserNotFoundException.java

@@ -1,9 +1,9 @@
 package com.plannaplan.exceptions;
 
+/**
+ * Exception to be thrown when provided user does not exist in database
+ */
 public class UserNotFoundException extends Exception {
-    /**
-     *
-     */
     private static final long serialVersionUID = 1L;
 
     public UserNotFoundException(String message) {

buisnesslogic/src/main/java/com/plannaplan/exceptions/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Provides custom for our app exceptions to get more accutrate errors info
+ *
+ * @since 1.0
+ */
+package com.plannaplan.exceptions;

buisnesslogic/src/main/java/com/plannaplan/models/ConfigData.java

@@ -2,6 +2,9 @@ package com.plannaplan.models;
 
 import java.io.InputStream;
 
+/**
+ * Config data copntainer to keep tours dates and stream of dasta to import
+ */
 public class ConfigData {
     private TourData firstTour;
     private TourData secondTour;

buisnesslogic/src/main/java/com/plannaplan/models/ExportData.java

@@ -0,0 +1,86 @@
+package com.plannaplan.models;
+
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+/**
+ * Container to keep data to export
+ */
+public class ExportData {
+
+    private static final String GROUP_FIELD = "gr_nr";
+    private static final String USER_FIELD = "user_id";
+    private static final String CYKL_FIELD = "zaj_cykl_id";
+
+    private String userId;
+    private String zajCyklId;
+    private String grNr;
+
+    /**
+     * @param userId    usosid
+     * @param zajCyklId course cycle
+     * @param grNr      group number
+     */
+    public ExportData(String userId, String zajCyklId, String grNr) {
+        this.setUserId(userId);
+        this.setZajCyklId(zajCyklId);
+        this.setGrNr(grNr);
+    }
+
+    /**
+     * @return group number
+     */
+    public String getGrNr() {
+        return grNr;
+    }
+
+    /**
+     * @param grNr group number
+     */
+    public void setGrNr(String grNr) {
+        this.grNr = grNr;
+    }
+
+    /**
+     * @return course cycle
+     */
+    public String getZajCyklId() {
+        return zajCyklId;
+    }
+
+    /**
+     * @param zajCyklId course cycle
+     */
+    public void setZajCyklId(String zajCyklId) {
+        this.zajCyklId = zajCyklId;
+    }
+
+    /**
+     * @return usosid
+     */
+    public String getUserId() {
+        return userId;
+    }
+
+    /**
+     * @param userId usosid
+     */
+    public void setUserId(String userId) {
+        this.userId = userId;
+    }
+
+    /**
+     * @return csv fromated line
+     */
+    public String convertToCSVRecord() {
+        return Stream.of(this.userId, this.zajCyklId, this.grNr).collect(Collectors.joining(","));
+    }
+
+    /**
+     * @return csv formated first line
+     */
+    public static String getCSVHeader() {
+        return USER_FIELD + ", " + CYKL_FIELD + ", " + GROUP_FIELD;
+    }
+
+}

buisnesslogic/src/main/java/com/plannaplan/models/FileData.java

@@ -4,6 +4,9 @@ import java.util.HashMap;
 import java.util.Iterator;
 import org.apache.poi.ss.usermodel.Row;
 
+/**
+ * Wrapper for data readed from file
+ */
 public class FileData {
 
     private HashMap<String, Integer> keys;
@@ -13,6 +16,7 @@ public class FileData {
      * FileData
      *
      * @param keys this is a hashmap of String and Integer
+     * 
      * @param rows this is a iterator of rows.
      */
     public FileData(HashMap<String, Integer> keys, Iterator<Row> rows) {
@@ -31,6 +35,7 @@ public class FileData {
 
     /*
      * setRows
+     * 
      * @param rows set the rows to given function
      */
     public void setRows(Iterator<Row> rows) {
@@ -39,6 +44,7 @@ public class FileData {
 
     /*
      * getKeys
+     * 
      * @return keys
      */
     public HashMap<String, Integer> getKeys() {
@@ -47,6 +53,7 @@ public class FileData {
 
     /*
      * setKeys
+     * 
      * @param keys set the key is being a struck of hashmap (String, Integer)
      */
     public void setKeys(HashMap<String, Integer> keys) {
@@ -55,6 +62,7 @@ public class FileData {
 
     /*
      * getIndexOf
+     * 
      * @return index
      */
     public int getIndexOf(String key) {

buisnesslogic/src/main/java/com/plannaplan/models/MatchData.java

@@ -3,64 +3,93 @@ package com.plannaplan.models;
 import com.plannaplan.entities.Assignment;
 import com.plannaplan.entities.Exchange;
 
+/**
+ * Match of users Exchange's to be performed
+ */
 public class MatchData {
-    private Exchange exchangeOne;
-    private Exchange exchangeTwo;
+	private Exchange exchangeOne;
+	private Exchange exchangeTwo;
 
-    public MatchData(Exchange exchangeOne, Exchange exchangeTwo) {
-	this.exchangeOne = exchangeOne;
-	this.exchangeTwo = exchangeTwo;
-    }
-
-    public Exchange getExchangeOne() {
-	return this.exchangeOne;
-    }
-
-    public Exchange getExchangeTwo() {
-	return this.exchangeTwo;
-    }
-
-    public Assignment getAssignmentTwo() {
-	return this.exchangeTwo.getOwnedAssignment();
-    }
-
-    public Assignment getAssignmentOne() {
-	return this.exchangeOne.getOwnedAssignment();
-    }
-
-    @Override
-    public int hashCode() {
-	return this.getAssignmentOne().hashCode() + this.getAssignmentTwo().hashCode();
-    }
-
-    @Override
-    public boolean equals(Object o) {
-
-	// If the object is compared with itself then return true
-	if (o == this) {
-	    return true;
-	}
-
-	/*
-	 * Check if o is an instance of Complex or not "null instanceof [type]" also
-	 * returns false
+	/**
+	 * create MatchData
+	 * 
+	 * @param exchangeOne first Exchange of found match
+	 * @param exchangeTwo second Exchange of found match
 	 */
-	if (!(o instanceof MatchData)) {
-	    return false;
+	public MatchData(Exchange exchangeOne, Exchange exchangeTwo) {
+		this.exchangeOne = exchangeOne;
+		this.exchangeTwo = exchangeTwo;
 	}
 
-	// typecast o to Complex so that we can compare data members
-	MatchData c = (MatchData) o;
+	/**
+	 * @return first Exchange
+	 */
+	public Exchange getExchangeOne() {
+		return this.exchangeOne;
+	}
 
-	// Compare the data members and return accordingly
-	return (this.getAssignmentOne().equals(c.getAssignmentOne()) && this.getAssignmentTwo().equals(c.getAssignmentTwo())) || (this.getAssignmentOne().equals(c.getAssignmentTwo()) && this.getAssignmentTwo().equals(c.getAssignmentOne()));
-    }
+	/**
+	 * @return second Exchange
+	 */
+	public Exchange getExchangeTwo() {
+		return this.exchangeTwo;
+	}
 
-    public int compare(MatchData m1) {
-	return Long.compare(m1.getExchangesMsValue(), this.getExchangesMsValue());
-    }
+	/**
+	 * @return second Exchange's owned assignmetn
+	 */
+	public Assignment getAssignmentTwo() {
+		return this.exchangeTwo.getOwnedAssignment();
+	}
 
-    public long getExchangesMsValue(){
-	return this.exchangeOne.getDataExchange().getTime() + this.exchangeTwo.getDataExchange().getTime();
-    }
+	/**
+	 * @return first Exchange's owned assignmetn
+	 */
+	public Assignment getAssignmentOne() {
+		return this.exchangeOne.getOwnedAssignment();
+	}
+
+	@Override
+	public int hashCode() {
+		return this.getAssignmentOne().hashCode() + this.getAssignmentTwo().hashCode();
+	}
+
+	@Override
+	public boolean equals(Object o) {
+
+		if (o == this) {
+			return true;
+		}
+
+		if (!(o instanceof MatchData)) {
+			return false;
+		}
+
+		MatchData c = (MatchData) o;
+
+		return (this.getAssignmentOne().equals(c.getAssignmentOne())
+				&& this.getAssignmentTwo().equals(c.getAssignmentTwo()))
+				|| (this.getAssignmentOne().equals(c.getAssignmentTwo())
+						&& this.getAssignmentTwo().equals(c.getAssignmentOne()));
+	}
+
+	/**
+	 * comparator for MatchData. It compare it by sum of both exchange's times. For
+	 * example MatchData with Exchanges 11:00 and 12:00 will be less than with
+	 * Exchanges 12:00 and 12:00
+	 * 
+	 * @param m1 MatchData instance to compare to
+	 * @return int less than 0 if m1 is "less than", 0 if it's equal and more than 0
+	 *         otherwise
+	 */
+	public int compare(MatchData m1) {
+		return Long.compare(m1.getExchangesMsValue(), this.getExchangesMsValue());
+	}
+
+	/**
+	 * @return sum of both exchanges java.sql.Timestanp::getTime"
+	 */
+	public long getExchangesMsValue() {
+		return this.exchangeOne.getDataExchange().getTime() + this.exchangeTwo.getDataExchange().getTime();
+	}
 }

buisnesslogic/src/main/java/com/plannaplan/models/TourData.java

@@ -2,6 +2,9 @@ package com.plannaplan.models;
 
 import java.sql.Date;
 
+/**
+ * Container for Tours dates
+ */
 public class TourData {
 
     private Date start;

buisnesslogic/src/main/java/com/plannaplan/models/UserApiResponse.java

@@ -11,18 +11,36 @@ public class UserApiResponse {
     public UserApiResponse() {
     }
 
+    /**
+     * @return user's Surname
+     */
     public String getSurname() {
         return surname;
     }
 
+    /**
+     * setter for name. Reson to have setters for this class is for case if there
+     * would be name and no surname or otherwise
+     * 
+     * @param surname name to set that was obtained by api request
+     */
     public void setSurname(String surname) {
         this.surname = surname;
     }
 
+    /**
+     * @return user's Name
+     */
     public String getName() {
         return name;
     }
 
+    /**
+     * setter for surname. Reson to have setters for this class is for case if there
+     * would be name and no surname or otherwise
+     * 
+     * @param name name to set that was obtained by api request
+     */
     public void setName(String name) {
         this.name = name;
     }

buisnesslogic/src/main/java/com/plannaplan/models/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Provides readonly (mostly) classes to keep data for diffrent pourposes
+ *
+ * @since 1.0
+ */
+package com.plannaplan.models;

buisnesslogic/src/main/java/com/plannaplan/repositories/AppConfigRepository.java

@@ -4,5 +4,8 @@ import com.plannaplan.entities.AppConfig;
 
 import org.springframework.data.jpa.repository.JpaRepository;
 
+/**
+ * Repository for app config
+ */
 public interface AppConfigRepository extends JpaRepository<AppConfig, Long> {
 }

buisnesslogic/src/main/java/com/plannaplan/repositories/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides jpa repositories interfaces to comunicate with database. These are
+ * used exclusively in services
+ *
+ * @since 1.0
+ */
+package com.plannaplan.repositories;

buisnesslogic/src/main/java/com/plannaplan/services/AssignmentService.java

@@ -91,12 +91,14 @@ public class AssignmentService {
             if (com.isPresent()) {
                 final List<Assignment> assignments = this.getCommisionAssignments(com.get());
                 assignments.forEach(a -> {
-                    final Groups group = a.getGroup();
-                    if (group.getCapacity() > group.getRegisteredStudents().size()) {
-                        e.claimGroup(group);
-                        accepted.add(group);
-                    } else {
-                        removed.add(group);
+                    if (a.isAccepted() == false) {
+                        final Groups group = a.getGroup();
+                        if (group.getCapacity() > group.getRegisteredStudents().size()) {
+                            e.claimGroup(group);
+                            accepted.add(group);
+                        } else {
+                            removed.add(group);
+                        }
                     }
                 });
             }

buisnesslogic/src/main/java/com/plannaplan/services/CommisionService.java

@@ -1,10 +1,12 @@
 package com.plannaplan.services;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
 
 import com.plannaplan.entities.Commision;
 import com.plannaplan.entities.User;
+import com.plannaplan.models.ExportData;
 import com.plannaplan.repositories.AssignmentRepository;
 import com.plannaplan.repositories.CommisionRepository;
 
@@ -22,10 +24,19 @@ public class CommisionService {
     private CommisionRepository repo;
     @Autowired
     private AssignmentRepository aRepository;
+    @Autowired
+    private UserService userService;
 
     public CommisionService() {
     }
 
+    /**
+     * save to database commision. It also checks for missing assignments from
+     * previous commision (you can not get rid of accepted assignment)
+     * 
+     * @param commision to save to db
+     * @return Commision instance with id from database
+     */
     public Commision save(Commision commision) {
         Optional<Commision> lastCommision = this.getNewestCommision(commision.getCommisionOwner());
         if (lastCommision.isPresent()) {
@@ -34,6 +45,7 @@ public class CommisionService {
                 assignment.setPastAssignment(true);
                 this.aRepository.save(assignment);
             });
+
         }
         this.repo.save(commision);
         return commision;
@@ -69,4 +81,21 @@ public class CommisionService {
     public long getCommisionsAmmount() {
         return this.repo.count();
     }
+
+    /**
+     * @return list of ExportData inmstancces keeping data to exprt to file
+     */
+    public List<ExportData> getExportData() {
+        final List<ExportData> response = new ArrayList<>();
+
+        this.userService.getAllStudents().forEach(student -> {
+            student.getStudentRegisteredGrups().forEach(group -> {
+                response.add(new ExportData(student.getUsosId(), Integer.toString(group.getZajCykId()),
+                        Integer.toString(group.getGrNr())));
+            });
+        });
+
+        return response;
+    }
+
 }

buisnesslogic/src/main/java/com/plannaplan/services/CourseService.java

@@ -10,7 +10,8 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 /**
- *  Service of CourseService which can get(Course By Name, All Courses, Courses Ammount ), save, delete course.
+ * Service of CourseService which can get(Course By Name, All Courses, Courses
+ * Ammount ), save, delete course.
  */
 
 @Service
@@ -18,42 +19,46 @@ public class CourseService {
     @Autowired
     private CourseRepository repo;
 
-    /*
+    /**
      * getCourseByName
-     * Return Course By Name
+     * 
+     * @param name name of course to be found
+     * @return Course By Name
      */
     public Optional<Course> getCourseByName(String name) {
         return this.repo.findByName(name);
     }
 
-    /*
-     * getAllCourses
-     * Return List of get courses
+    /**
+     * 
+     * @return all courses from db
      */
     public List<Course> getAllCourses() {
         return this.repo.findAll();
     }
 
-    /*
-     * save
+    /**
+     * save to db
+     * 
      * @param course which course you would like to save
+     * @return Course instance with id from db
      */
     public Course save(Course course) {
         this.repo.save(course);
         return course;
     }
 
-    /*
-     * delete
+    /**
+     * delete course from db
+     * 
      * @param course which course you would like to delete
      */
     public void delete(Course course) {
         this.repo.delete(course);
     }
 
-    /*
-     * getCoursesAmmount
-     * Return a ammount of courses
+    /**
+     * @return ammount of courses in db
      */
     public int getCoursesAmmount() {
         return (int) this.repo.count();

buisnesslogic/src/main/java/com/plannaplan/services/EventService.java

@@ -12,6 +12,9 @@ import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
 import org.springframework.scheduling.support.CronTrigger;
 import org.springframework.stereotype.Service;
 
+/**
+ * Service to manage app events
+ */
 @Service
 public class EventService {
 
@@ -29,6 +32,9 @@ public class EventService {
         System.out.println("Checking for groups");
     }
 
+    /**
+     * perfroms checks for matching exchanges daily
+     */
     @Scheduled(cron = "0 0 0 * * *")
     public void performExchangeService() {
         System.out.println("Performing Exchange");
@@ -53,6 +59,10 @@ public class EventService {
         jobsMap.put(taskId, scheduledTask);
     }
 
+    /**
+     * init resources needed for dynamicly creating new tasks (needed to set tours
+     * end events)
+     */
     @PostConstruct
     public void initialize() {
         this.scheduler = new ThreadPoolTaskScheduler();

buisnesslogic/src/main/java/com/plannaplan/services/ExchangeService.java

@@ -19,6 +19,9 @@ import com.plannaplan.repositories.ExchangeRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+/**
+ * Service to manage Exchanges
+ */
 @Service
 public class ExchangeService {
 
@@ -50,6 +53,9 @@ public class ExchangeService {
         return this.repo.findById(id);
     }
 
+    /**
+     * @return list of all exchanges in database
+     */
     public List<Exchange> getAllExchanges() {
         return this.repo.findAll();
     }
@@ -78,6 +84,12 @@ public class ExchangeService {
         return this.repo.checkForExchange(assignment, group);
     }
 
+    /**
+     * method to perform Exchange algorythm. It search for matches and swap
+     * assignments between latests user commisions if it can be performed. After
+     * swap we block users matches that contains switched groups. After algorythm
+     * email is being sent to all users with information about performed exchanges
+     */
     public void performExchange() {
         final List<MatchData> matchData = this.getMatches();
         final List<Long> performedAssignmentExchanges = new ArrayList<>();
@@ -127,6 +139,9 @@ public class ExchangeService {
         this.repo.deleteAll(exchangesToDelete);
     }
 
+    /**
+     * @return list of matches found in database
+     */
     public List<MatchData> getMatches() {
         final List<MatchData> matches = this.repo.getMatches().stream().map(m -> {
             final Exchange exchangeOne = (Exchange) m[0];

buisnesslogic/src/main/java/com/plannaplan/services/GroupService.java

@@ -18,7 +18,6 @@ import org.springframework.stereotype.Service;
  * Service of GroupService which can find(optional), get(By Course, Groups
  * Ammount, Group By Id, find Not Existing Group), save, delete group.
  */
-
 @Service
 public class GroupService {
     @Autowired
@@ -27,34 +26,84 @@ public class GroupService {
     public GroupService() {
     }
 
+    /**
+     * find group with given properties
+     * 
+     * @param time     scheduled time for group as int of minutes passed from 00:00
+     * @param capacity capacity of group
+     * @param room     class room
+     * @return optional with Groups instance if found
+     */
     public Optional<Groups> find(int time, int capacity, String room) {
         return this.repo.find(time, room, capacity);
     }
 
+    /**
+     * find group with given properties
+     * 
+     * @param zajCykId proteprty from usos
+     * @param nrGr     group number
+     * @return optional with Groups instance if found
+     */
     public Optional<Groups> find(Integer zajCykId, Integer nrGr) {
         return this.repo.find(zajCykId, nrGr);
     }
 
+    /**
+     * find group with given properties
+     * 
+     * @param id course id of groups belogns to
+     * @return list of found groups
+     */
     public List<Groups> getGroupsByCourse(Long id) {
         return this.repo.getByCourse(id);
     }
 
+    /**
+     * save group to database
+     * 
+     * @param group insatnce to be saved
+     * @return new instance that has id form database
+     */
     public Groups save(Groups group) {
         return this.repo.save(group);
     }
 
+    /**
+     * delete from database
+     * 
+     * @param groups isntance to delete
+     */
     public void delete(Groups groups) {
         this.repo.delete(groups);
     }
 
+    /**
+     * get hom manyh groups are in database in general
+     * 
+     * @return int - groups ammount
+     */
     public int getGroupsAmmount() {
         return (int) this.repo.count();
     }
 
+    /**
+     * find group with given properties
+     * 
+     * @param id group id
+     * @return optional with group if found
+     */
     public Optional<Groups> getGroupById(Long id) {
         return this.repo.findById(id);
     }
 
+    /**
+     * get wich of provided id is not existind groups
+     * 
+     * @param ids list of ids to check
+     * @return optional with id that is not group if found. If there is multiple
+     *         will be returned first found
+     */
     public Optional<Long> findNotExistingGroup(List<Long> ids) {
         for (Long oneId : ids) {
             if (this.repo.existsById(oneId) == false) {

buisnesslogic/src/main/java/com/plannaplan/services/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides service classes to make operations with entities or comunicate with
+ * external systems.
+ *
+ * @since 1.0
+ */
+package com.plannaplan.services;

buisnesslogic/src/main/java/com/plannaplan/types/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Provides enums for different goals.
+ *
+ * @since 1.0
+ */
+package com.plannaplan.types;

buisnesslogic/src/test/java/com/plannaplan/models/ExportDataTest.java

@@ -0,0 +1,14 @@
+package com.plannaplan.models;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.Test;
+
+public class ExportDataTest {
+
+    @Test
+    public void shouldConvertDataToCSVRecord() {
+        final ExportData data = new ExportData("4234", "242352", "12");
+        assertTrue(data.convertToCSVRecord().equals("4234,242352,12"));
+    }
+}

buisnesslogic/src/test/java/com/plannaplan/services/AssignmentServiceTest.java

@@ -131,6 +131,34 @@ public class AssignmentServiceTest {
 
     }
 
+    @Test
+    @DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
+    public void shouldAcceptTwoTours() throws InterruptedException {
+        final Groups group = this.groupService.save(new Groups(5, null, null, 840, WeekDay.MONDAY, null));
+        final Groups group2 = this.groupService.save(new Groups(5, null, null, 840, WeekDay.MONDAY, null));
+
+        User user = this.userService.save(new User(null, null,
+                "shouldNotAcceptForOnePerson-" + UUID.randomUUID().toString() + "@AssignmentService.test", null,
+                UserRoles.STUDENT, 234));
+
+        final Commision com = this.comServie.save(new Commision(user));
+
+        this.service.save(new Assignment(group, com));
+
+        this.service.callAcceptAlgorythm();
+
+        user = this.userService.getById(user.getId()).get();
+        assertTrue(user.getStudentRegisteredGrups().size() == 1);
+
+        this.service.save(new Assignment(group2, com));
+
+        this.service.callAcceptAlgorythm();
+
+        user = this.userService.getById(user.getId()).get();
+        assertTrue(user.getStudentRegisteredGrups().size() == 2);
+
+    }
+
     private void addAssignmentToCommision(Commision com) {
         Assignment a = new Assignment(null, com);
         this.service.save(a);

restservice/pom.xml

@@ -62,6 +62,14 @@
       <version>4.5.10</version>
     </dependency>
 
+    <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
+    <dependency>
+      <groupId>commons-io</groupId>
+      <artifactId>commons-io</artifactId>
+      <version>2.5</version>
+    </dependency>
+
+
     <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>

restservice/src/main/java/com/plannaplan/App.java

@@ -21,6 +21,9 @@ import org.springframework.scheduling.annotation.EnableScheduling;
 
 import com.plannaplan.services.ConfiguratorService;
 
+/**
+ * Root class of Application.
+ */
 @SpringBootApplication
 @EnableScheduling
 public class App {
@@ -46,7 +49,9 @@ public class App {
 
         /**
          * method to import mocked data to testing app after startz. It is called only
-         * in dev profile
+         * in dev profile. Note that tests are written to this app state so if you
+         * change ConfigData it can have an impact to other tests like
+         * CommisionControllerTest
          */
         @EventListener(ApplicationReadyEvent.class)
         public void importData() {

restservice/src/main/java/com/plannaplan/Logo.java

@@ -3,6 +3,9 @@ package com.plannaplan;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 
+/**
+ * Class to generate logo string on start application and make logs info
+ */
 public class Logo {
 
     public static final String ANSI_RESET = "\u001B[0m";
@@ -35,6 +38,11 @@ ANSI_RESET;
     }
 
 
+    /**
+     * return init string to log
+     * @param isDev is spring profile dev
+     * @return string to print in log
+     */
     public static String getInitInfo(boolean isDev){
         DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSS");  
         LocalDateTime now = LocalDateTime.now(); 
@@ -45,6 +53,11 @@ ANSI_RESET;
         return ANSI_BLACK + dtf.format(now) + ANSI_YELLOW + "  plannaplan" + ANSI_RESET + " initializing [" +ANSI_BLUE + "prod" + ANSI_RESET +"]";
     }
 
+    /**
+     * return start string to log
+     * @param isDev is spring profile dev
+     * @return string to print in log
+     */
     public static String getStartedInfo(boolean isDev){
         DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSS");  
         LocalDateTime now = LocalDateTime.now(); 

restservice/src/main/java/com/plannaplan/Swagger2Config.java

@@ -18,6 +18,9 @@ import springfox.documentation.spi.DocumentationType;
 import springfox.documentation.spring.web.plugins.Docket;
 import springfox.documentation.swagger2.annotations.EnableSwagger2;
 
+/**
+ * Config class of Swagger to generate rest api documentation
+ */
 @Configuration
 @EnableSwagger2
 public class Swagger2Config extends WebMvcConfigurationSupport {

restservice/src/main/java/com/plannaplan/controllers/CommisionController.java

@@ -12,19 +12,26 @@ import io.swagger.annotations.ApiParam;
 import java.util.List;
 import java.util.Optional;
 
+import javax.servlet.http.HttpServletResponse;
+
 import com.plannaplan.App;
 import com.plannaplan.entities.Assignment;
 import com.plannaplan.entities.Commision;
 import com.plannaplan.entities.Groups;
 import com.plannaplan.entities.User;
 import com.plannaplan.exceptions.UserNotFoundException;
+import com.plannaplan.models.ExportData;
 import com.plannaplan.responses.mappers.CommisionResponseMappers;
 import com.plannaplan.responses.models.CommisionResponse;
 import com.plannaplan.services.AssignmentService;
 import com.plannaplan.services.CommisionService;
+import com.plannaplan.services.ConfiguratorService;
 import com.plannaplan.services.GroupService;
+import com.plannaplan.types.AppState;
 import com.plannaplan.types.UserRoles;
 
+import org.apache.commons.io.IOUtils;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
@@ -35,12 +42,20 @@ import org.springframework.util.Assert;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 
+import java.io.IOException;
+import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.Iterator;
 
 import com.plannaplan.responses.mappers.AssignmentResponseMappers;
+import com.plannaplan.responses.models.AssignmentDetailedResponse;
 import com.plannaplan.responses.models.AssignmentResponse;
 
+/**
+ * Rest controller to Commision and Assignment related endpoints. More detailed
+ * api docs is available via swagger
+ */
 @RestController
 @CrossOrigin
 @RequestMapping("/api/" + App.API_VERSION + "/commisions")
@@ -56,9 +71,17 @@ public class CommisionController extends TokenBasedController {
         @Autowired
         private AssignmentService assignmentService;
 
+        @Autowired
+        private ConfiguratorService configuratorService;
+
         public CommisionController() {
         }
 
+        /**
+         * @param groups to make assignmetns
+         * @param userId user to assign to groups
+         * @return was operations success
+         */
         @PostMapping(value = { "/user", "/user/{id}" })
         @ApiOperation(value = "Create commision with assignents to given groups. If group doesn't exist error will be thrown")
         public ResponseEntity<String> addCommision(
@@ -66,7 +89,7 @@ public class CommisionController extends TokenBasedController {
                         @PathVariable(name = "id", required = false) Long userId) {
 
                 try {
-
+                        final AppState appState = this.configuratorService.getCurrentConfig().getCurrentState();
                         final User asker = this.getCurrentUser()
                                         .orElseThrow(() -> new UserNotFoundException("Invalid token"));
 
@@ -76,23 +99,46 @@ public class CommisionController extends TokenBasedController {
                                         : asker;
 
                         Assert.isTrue((asker.getRole() == UserRoles.DEANERY && user.getRole() == UserRoles.STUDENT
-                                        || (asker.getId().equals(user.getId()) && user.getRole() == UserRoles.STUDENT)),
+                                        && appState == AppState.NO_TOUR
+                                        || (asker.getId().equals(user.getId()) && user.getRole() == UserRoles.STUDENT
+                                                        && appState != AppState.NO_TOUR)),
                                         "Incorrect attempt to change plan");
 
                         Optional<Long> notExistingGroup = this.groupServcicxe.findNotExistingGroup(groups);
                         Assert.isTrue(!notExistingGroup.isPresent(), "Group "
                                         + notExistingGroup.orElse(Long.MIN_VALUE).toString() + "doesn't exist");
 
+                        final Optional<Commision> comPrev = this.commisionService.getNewestCommision(user);
                         final Commision com = new Commision(user, asker);
                         this.commisionService.save(com);
 
+                        final List<Long> addedGroups = new ArrayList<>();
                         groups.stream().forEach((groupId) -> {
                                 Groups group = this.groupServcicxe.getGroupById(groupId)
                                                 .orElseThrow(() -> new NullPointerException());
                                 Assignment a = new Assignment(group, com);
                                 this.assignmentService.save(a);
+                                addedGroups.add(groupId);
                         });
 
+                        boolean isBad = false;
+                        if (comPrev.isPresent()) {
+                                final Iterator<Assignment> it = comPrev.get().getAssignments().iterator();
+
+                                while (it.hasNext() && !isBad) {
+                                        final Assignment a = it.next();
+                                        if (a.isAccepted() && !addedGroups.contains(a.getId())) {
+                                                isBad = true;
+                                        }
+                                }
+
+                        }
+
+                        if (isBad) {
+                                return new ResponseEntity<>("Error. You can't delete accepted assignmet",
+                                                HttpStatus.BAD_REQUEST);
+                        }
+
                         return new ResponseEntity<>("Succes", HttpStatus.OK);
                 } catch (UserNotFoundException exception) {
                         return new ResponseEntity<>(exception.getMessage(), HttpStatus.NOT_FOUND);
@@ -101,6 +147,11 @@ public class CommisionController extends TokenBasedController {
                 }
         }
 
+        /**
+         * @param groups should include groups list in response
+         * @return list of user all commisions (history of schedules)
+         * @throws UserNotFoundException if user was found
+         */
         @GetMapping("/user")
         @ApiOperation("Return list of user all commisions (history of schedules)")
         public ResponseEntity<List<? extends CommisionResponse>> getAlCommisions(
@@ -118,8 +169,35 @@ public class CommisionController extends TokenBasedController {
                 }
 
                 return new ResponseEntity<>(result, HttpStatus.OK);
+
         }
 
+        /**
+         * @return list of user latests assignmets
+         * @throws UserNotFoundException if user was not found bny token
+         */
+        @GetMapping("/user/assignments")
+        @ApiOperation("Return list of latest user commision assignments. User is recognized via token")
+        public ResponseEntity<List<AssignmentDetailedResponse>> getAllAssignmets() throws UserNotFoundException {
+                final User user = this.getCurrentUser().orElseThrow(() -> new NullPointerException());
+
+                final Optional<Commision> latestCommision = this.commisionService.getNewestCommision(user);
+
+                if (latestCommision.isEmpty()) {
+                        return new ResponseEntity<>(new ArrayList<>(), HttpStatus.OK);
+                }
+
+                final List<AssignmentDetailedResponse> response = AssignmentResponseMappers
+                                .mapAssignmetnToDetialedResponse(latestCommision.get().getAssignments());
+
+                return new ResponseEntity<>(response, HttpStatus.OK);
+        }
+
+        /**
+         * @return current schedule of user indenified via token
+         * @throws Exception if incorrect role was trying to see self schedule (for
+         *                   example DEANERY don't have a schedule)
+         */
         @GetMapping("/user/schedule")
         @ApiOperation(value = "Return user current assignemts (from newest commision). STUDENT Token needs to be provided.")
         public ResponseEntity<List<AssignmentResponse>> getCurrentAssignments() throws Exception {
@@ -137,6 +215,12 @@ public class CommisionController extends TokenBasedController {
                 return new ResponseEntity<>(new ArrayList<>(), HttpStatus.OK);
         }
 
+        /**
+         * @param userId user id in db
+         * @param groups should commision include assigned groups list
+         * @return list of commisions for given user
+         * @throws UserNotFoundException
+         */
         @PreAuthorize("hasRole('ROLE_DEANERY')")
         @GetMapping("/user/{id}")
         @ApiOperation("Return list of commisions for given user. To be able to access this data u need to provide DEANERY token")
@@ -156,6 +240,11 @@ public class CommisionController extends TokenBasedController {
                 return new ResponseEntity<>(result, HttpStatus.OK);
         }
 
+        /**
+         * @param userId schedule to display owner
+         * @return user's schedule
+         * @throws Exception if incorrect access atempt occured
+         */
         @PreAuthorize("hasRole('ROLE_DEANERY')")
         @GetMapping("/user/{id}/schedule")
         @ApiOperation(value = "Return given user current assignemts (from newest commision). DEANERY Token needs to be provided.")
@@ -177,4 +266,32 @@ public class CommisionController extends TokenBasedController {
                 return new ResponseEntity<>(new ArrayList<>(), HttpStatus.OK);
         }
 
+        /**
+         * @param response spring response to set headers
+         */
+        @GetMapping("/export/csv")
+        @PreAuthorize("hasRole('ROLE_ADMIN')")
+        @ApiOperation(value = "Export acceptes assignmetns as csv file to import to usos. You need to provide ADMIN token in order to get access to this data.")
+        public void getFile(HttpServletResponse response) {
+                try {
+                        String csvString = ExportData.getCSVHeader() + "\n";
+                        final Iterator<ExportData> it = this.commisionService.getExportData().iterator();
+                        while (it.hasNext()) {
+                                final ExportData data = it.next();
+                                csvString += (data.convertToCSVRecord() + "\n");
+                        }
+
+                        final InputStream is = IOUtils.toInputStream(csvString, "UTF-8");
+
+                        IOUtils.copy(is, response.getOutputStream());
+                        response.setContentType("application/csv");
+                        response.setHeader("Content-Disposition", "attachment; filename=\"export.csv\"");
+                        response.flushBuffer();
+                } catch (IOException ex) {
+
+                        throw new RuntimeException("IOError writing file to output stream");
+                }
+
+        }
+
 }

restservice/src/main/java/com/plannaplan/controllers/ConfigController.java

@@ -35,6 +35,10 @@ import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import io.swagger.annotations.ApiParam;
 
+/**
+ * Rest controller to Config related endpoints. More detailed api docs is
+ * available via swagger
+ */
 @RestController
 @CrossOrigin
 @RequestMapping("/api/" + App.API_VERSION + "/configurator")
@@ -47,14 +51,22 @@ public class ConfigController {
 
     @Value("${plannaplan.dev}")
     private boolean isDev;
-    
+
     @Autowired
     private ConfiguratorService contrl;
 
     @Autowired
-    private UserService userService; 
-
+    private UserService userService;
 
+    /**
+     * @param file            file .xlsx that contains courses and groups with
+     *                        apoinnted rules
+     * @param firstTourBegin  formated string dd.MM.yyyy
+     * @param firstTourEnd    formated string dd.MM.yyyy
+     * @param secondTourBegin formated string dd.MM.yyyy
+     * @param secondTourEnd   formated string dd.MM.yyyy
+     * @return was config success
+     */
     @PostMapping(path = "/config", consumes = { "multipart/form-data" })
     @PreAuthorize("hasRole('ROLE_ADMIN')")
     @ApiOperation("Imports data to system. To call you need to provide ADMIN token")
@@ -82,7 +94,13 @@ public class ConfigController {
         }
     }
 
-
+    /**
+     * @param firstTourBegin  formated string dd.MM.yyyy
+     * @param firstTourEnd    formated string dd.MM.yyyy
+     * @param secondTourBegin formated string dd.MM.yyyy
+     * @param secondTourEnd   formated string dd.MM.yyyy
+     * @return was operation successful
+     */
     @PostMapping(path = "/config/tours")
     @PreAuthorize("hasRole('ROLE_ADMIN')")
     @ApiOperation("Set tours dates. To call you need to provide ADMIN token")
@@ -104,12 +122,15 @@ public class ConfigController {
         return new ResponseEntity<>("Sucess", HttpStatus.OK);
     }
 
+    /**
+     * @param file file .xlsx that contains courses and groups with
+     * @return was operation successfull
+     */
     @PostMapping(path = "/config/courses", consumes = { "multipart/form-data" })
     @PreAuthorize("hasRole('ROLE_ADMIN')")
     @ApiOperation("Imports data to system. To call you need to provide ADMIN token")
     public ResponseEntity<String> configAppChangeCources(
-            @RequestParam("file") @ApiParam(value = "file .xlsx that contains courses and groups with apoinnted rules") MultipartFile file)
-            {
+            @RequestParam("file") @ApiParam(value = "file .xlsx that contains courses and groups with apoinnted rules") MultipartFile file) {
         try {
             this.contrl.importCoursesStream(file.getInputStream());
             return new ResponseEntity<>("Sucess", HttpStatus.OK);
@@ -118,15 +139,20 @@ public class ConfigController {
         }
     }
 
+    /**
+     * @param ticket CAS ticket to get user wuthority
+     * @return was admin created
+     */
     @PostMapping(path = "/admin/init")
     @ApiOperation("It can be run only in the initialization of the application. It will create admin user to manage the application.")
-    public ResponseEntity<String> initAdmin(@RequestParam("ticket") @ApiParam(value = "Ticket for validation.") String ticket){
-        if (this.userService.adminExists()){
+    public ResponseEntity<String> initAdmin(
+            @RequestParam("ticket") @ApiParam(value = "Ticket for validation.") String ticket) {
+        if (this.userService.adminExists()) {
             return new ResponseEntity<>("Admin had been already created.", HttpStatus.FORBIDDEN);
         }
-        
+
         final CasValidator validator = isDev ? new DefaultUAMCasValidator(serviceUrl, ticket)
-        : new CustomUAMCasValidator(serviceUrl, ticket);
+                : new CustomUAMCasValidator(serviceUrl, ticket);
 
         try {
             final CasUserIdentity casUserIdentity = validator.validate();
@@ -140,5 +166,5 @@ public class ConfigController {
         } catch (Exception e) {
             return new ResponseEntity<>("Internal Server Error", HttpStatus.INTERNAL_SERVER_ERROR);
         }
-    }  
+    }
 }

restservice/src/main/java/com/plannaplan/controllers/CoursesController.java

@@ -29,6 +29,10 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import com.plannaplan.responses.models.abstracts.CoursesResponse;
 
+/**
+ * Rest controller to Courses related endpoints. More detailed api docs is
+ * available via swagger
+ */
 @RestController
 @CrossOrigin
 @RequestMapping("/api/" + App.API_VERSION + "/courses")
@@ -41,6 +45,11 @@ public class CoursesController {
     @Autowired
     private GroupService groupService;
 
+    /**
+     * @param groups      should include groups in response
+     * @param takenPlaces should include groups in response
+     * @return list of all courses in system
+     */
     @GetMapping("/all")
     @ApiOperation(value = "Return all courses")
     public ResponseEntity<List<? extends CoursesResponse>> getMethodName(

restservice/src/main/java/com/plannaplan/controllers/ExchangeController.java

@@ -33,11 +33,15 @@ import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import io.swagger.annotations.ApiParam;
 
+/**
+ * Rest controller to Exchange related endpoints. More detailed api docs is
+ * available via swagger
+ */
 @RestController
 @CrossOrigin
 @RequestMapping("/api/" + App.API_VERSION + "/exchanges")
 @Api(tags = { "Exchange" }, value = "Exchange", description = "Endpoint to exchange with accepted assignments.")
-public class ExchangeController extends TokenBasedController{
+public class ExchangeController extends TokenBasedController {
 
     @Autowired
     private GroupService groupService;
@@ -48,40 +52,56 @@ public class ExchangeController extends TokenBasedController{
     @Autowired
     private ExchangeService exchangeService;
 
+    /**
+     * @param exchangeRequest mapped json body with requierd paramas (groupid and
+     *                        assignment)
+     * @return was job successfull
+     * @throws UserNotFoundException if user was not found
+     */
     @PostMapping("/exchange")
     @ApiOperation(value = "Creates exchange offer.")
     public ResponseEntity<String> createExchange(
-        @ApiParam( value = "Json object that contains assignment to trade and desired group")
-        @RequestBody
-        Map<String, Long> exchangeRequest)
+            @ApiParam(value = "Json object that contains assignment to trade and desired group. For example: { \"assignment\": 3, \"group\":32 }") @RequestBody Map<String, Long> exchangeRequest)
             throws UserNotFoundException {
 
-        final User asker = this.getCurrentUser()
-                                        .orElseThrow(() -> new UserNotFoundException("Invalid token"));
+        final User asker = this.getCurrentUser().orElseThrow(() -> new UserNotFoundException("Invalid token"));
         final Long assignmentId = exchangeRequest.get("assignment");
         final Long groupId = exchangeRequest.get("group");
-        final List<Long> ownedGroups = asker.getStudentRegisteredGrups().stream().map(Groups::getId).collect(Collectors.toList());
+        final List<Long> ownedGroups = asker.getStudentRegisteredGrups().stream().map(Groups::getId)
+                .collect(Collectors.toList());
 
-        if(ownedGroups.contains(groupId)){
+        if (ownedGroups.contains(groupId)) {
             return new ResponseEntity<>("User has already got this group.", HttpStatus.BAD_REQUEST);
         }
 
-        if(assignmentId == null || groupId == null ){
+        if (assignmentId == null || groupId == null) {
             return new ResponseEntity<>("Some of values are missing", HttpStatus.BAD_REQUEST);
         }
 
         final Optional<Assignment> assignment = this.assignmentService.getById(assignmentId);
         final Optional<Groups> group = this.groupService.getGroupById(groupId);
 
-        if(assignment.isEmpty() || group.isEmpty()){
+        if (assignment.isEmpty() || group.isEmpty()) {
             return new ResponseEntity<>("Some of provided value does not exist.", HttpStatus.BAD_REQUEST);
         }
 
         final Assignment assignmentInstance = assignment.get();
         final Groups groupInstance = group.get();
 
-        if(!(assignmentInstance.getCommision().getCommisionOwner().getId().equals(asker.getId()) && assignmentInstance.isAccepted())){
-            return new ResponseEntity<>("Some of problems appeared. Check if you have access to given assignment and if it is accepted or the exchange has not been already added.", HttpStatus.BAD_REQUEST);
+        if (assignmentInstance.getGroup().getCourseId() != null
+                && assignmentInstance.getGroup().getCourseId().getId() != groupInstance.getCourseId().getId()) {
+            return new ResponseEntity<>("You can performe exchange only within one course.", HttpStatus.BAD_REQUEST);
+        }
+
+        if (assignmentInstance.getGroup().getType() != groupInstance.getType()) {
+            return new ResponseEntity<>("You can't exchange lecture to class and otherwise.", HttpStatus.BAD_REQUEST);
+        }
+
+        if (!(assignmentInstance.getCommision().getCommisionOwner().getId().equals(asker.getId())
+                && assignmentInstance.isAccepted())) {
+            return new ResponseEntity<>(
+                    "Some of problems appeared. Check if you have access to given assignment and if it is accepted or the exchange has not been already added.",
+                    HttpStatus.BAD_REQUEST);
         }
 
         this.exchangeService.save(new Exchange(assignmentInstance, groupInstance));
@@ -89,37 +109,43 @@ public class ExchangeController extends TokenBasedController{
         return new ResponseEntity<>("Success", HttpStatus.OK);
     }
 
+    /**
+     * @param offerId id to delwete from db
+     * @return was jub successful
+     * @throws UserNotFoundException if user was not found
+     */
     @DeleteMapping("/exchange/{id}")
     @ApiOperation(value = "Delete exchange offer")
     public ResponseEntity<String> deleteExchange(@PathVariable(name = "id", required = false) Long offerId)
             throws UserNotFoundException {
 
-        final User asker = this.getCurrentUser()
-                                        .orElseThrow(() -> new UserNotFoundException("Invalid token"));
+        final User asker = this.getCurrentUser().orElseThrow(() -> new UserNotFoundException("Invalid token"));
 
         final Optional<Exchange> exchange = this.exchangeService.getById(offerId);
 
-        if(exchange.isEmpty()){
-            return new ResponseEntity<>("Given offer does not exist.",  HttpStatus.BAD_REQUEST);
+        if (exchange.isEmpty()) {
+            return new ResponseEntity<>("Given offer does not exist.", HttpStatus.BAD_REQUEST);
         }
 
         final Exchange exchangeToDelete = exchange.get();
 
-        if(!(exchangeToDelete.getOwnedAssignment().getCommision().getCommisionOwner().getId().equals(asker.getId()))){
-            return new ResponseEntity<>("You have not permission for that action.",  HttpStatus.BAD_REQUEST);
+        if (!(exchangeToDelete.getOwnedAssignment().getCommision().getCommisionOwner().getId().equals(asker.getId()))) {
+            return new ResponseEntity<>("You have not permission for that action.", HttpStatus.BAD_REQUEST);
         }
 
         this.exchangeService.deleteExchange(exchangeToDelete);
         return new ResponseEntity<>("Success", HttpStatus.OK);
     }
 
+    /**
+     * @return return all user's exchange offers
+     * @throws UserNotFoundException iF user was not found
+     */
     @GetMapping("/exchange/all")
     @ApiOperation(value = "Get exchange offers")
-    public ResponseEntity<List<ExchangeResponse>> getExchange()
-            throws UserNotFoundException {
+    public ResponseEntity<List<ExchangeResponse>> getExchange() throws UserNotFoundException {
 
-        final User asker = this.getCurrentUser()
-                                        .orElseThrow(() -> new UserNotFoundException("Invalid token"));
+        final User asker = this.getCurrentUser().orElseThrow(() -> new UserNotFoundException("Invalid token"));
 
         final List<Exchange> response = exchangeService.getByUserId(asker.getId());
         final List<ExchangeResponse> listOfResponses = ExchangeResponseMappers.mapToDefaultResponse(response);
@@ -127,23 +153,27 @@ public class ExchangeController extends TokenBasedController{
         return new ResponseEntity<>(listOfResponses, HttpStatus.OK);
     }
 
+    /**
+     * @param offerId id of exchange in db
+     * @return Exchage response
+     * @throws UserNotFoundException if user was not found
+     */
     @GetMapping("/exchange/{id}")
-    @ApiOperation(value = "Get exchange offers")
+    @ApiOperation(value = "Get exchange offer")
     public ResponseEntity<ExchangeResponse> getExchangeById(@PathVariable(name = "id", required = false) Long offerId)
             throws UserNotFoundException {
 
-        final User asker = this.getCurrentUser()
-                                        .orElseThrow(() -> new UserNotFoundException("Invalid token"));
+        final User asker = this.getCurrentUser().orElseThrow(() -> new UserNotFoundException("Invalid token"));
 
         final Optional<Exchange> exchange = this.exchangeService.getById(offerId);
 
-        if(exchange.isEmpty()){
-            return new ResponseEntity<>(null,  HttpStatus.BAD_REQUEST);
+        if (exchange.isEmpty()) {
+            return new ResponseEntity<>(null, HttpStatus.BAD_REQUEST);
         }
 
         final Exchange exchangeInstance = exchange.get();
-        if(!exchangeInstance.getOwnerId().equals(asker.getId())){
-            return new ResponseEntity<>(null,  HttpStatus.BAD_REQUEST);
+        if (!exchangeInstance.getOwnerId().equals(asker.getId())) {
+            return new ResponseEntity<>(null, HttpStatus.BAD_REQUEST);
         }
 
         return new ResponseEntity<>(new ExchangeResponse(exchangeInstance), HttpStatus.OK);

restservice/src/main/java/com/plannaplan/controllers/GroupController.java

@@ -27,9 +27,12 @@ import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import io.swagger.annotations.ApiParam;
 
+/**
+ * Rest controller to Groups related endpoints. More detailed api docs is
+ * available via swagger
+ */
 @RestController
 @CrossOrigin
-
 @RequestMapping("/api/" + App.API_VERSION + "/groups")
 @Api(tags = {
         "Group" }, value = "Group", description = "Enpoints to deal with gorups. Group is related directly to course and can be either class and lecture")
@@ -37,6 +40,12 @@ public class GroupController {
     @Autowired
     private GroupService groupService;
 
+    /**
+     * @param id          course to display with groups
+     * @param capacity    should include capaticty in response
+     * @param takenPlaces should include takenPlaces in response
+     * @return CourseWithGroupsResponse
+     */
     @GetMapping("/course/{id}")
     @ApiOperation(value = "Return list of lectures and classes (if present) given course")
     public ResponseEntity<CourseWithGroupsResponse<? extends GroupDefaultResponse>> getCourses(
@@ -61,6 +70,11 @@ public class GroupController {
         return new ResponseEntity<>(GroupsMappers.mapToGetCourseGroupsDefaultResponse(groups), HttpStatus.OK);
     }
 
+    /**
+     * @param id          group id to change capacity
+     * @param newcapacity new capacity to insert
+     * @return ResponseEntity was action success
+     */
     @PutMapping("/{id}/capacity")
     @PreAuthorize("hasRole('ROLE_DEANERY')")
     @ApiOperation(value = "Change capacity of given group. You need to provide DEANERY token to be ale to change capacity")

restservice/src/main/java/com/plannaplan/controllers/TokenBasedController.java

@@ -11,6 +11,10 @@ import org.springframework.security.core.Authentication;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.security.authentication.AnonymousAuthenticationToken;
 
+/**
+ * Abstract class for controllers that requires token to extra authorize action
+ * beyond spring security
+ */
 public abstract class TokenBasedController {
     @Autowired
     protected UserService userService;
@@ -18,6 +22,10 @@ public abstract class TokenBasedController {
     public TokenBasedController() {
     }
 
+    /**
+     * @return get currect user based no current spring context
+     * @throws UserNotFoundException if user was not fount
+     */
     protected Optional<User> getCurrentUser() throws UserNotFoundException {
         Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
 

restservice/src/main/java/com/plannaplan/controllers/TokenController.java

@@ -26,6 +26,10 @@ import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import io.swagger.annotations.ApiParam;
 
+/**
+ * Rest controller to Token related endpoints. More detailed api docs is
+ * available via swagger
+ */
 @RestController
 @CrossOrigin
 @Api(tags = { "Token" }, value = "Token", description = "Enpoints to get authorization.")
@@ -40,6 +44,10 @@ public class TokenController {
     @Autowired
     private UserService userService;
 
+    /**
+     * @param ticket via CAS obtained ticket - it's base to auth user
+     * @return TokenResponse if operation was success
+     */
     @GetMapping("/token")
     @ApiOperation(value = "Endpoint to access token required to call secured endpoints. In order to access token we need to provide access token comming from unviersity CAS system")
     public ResponseEntity<TokenResponse> getToken(
@@ -64,6 +72,11 @@ public class TokenController {
         }
     }
 
+    /**
+     * @param refreshToken refresh token obtained via /token endpoint
+     * @return TokenResponse if operation was success
+     * @throws NullPointerException is thrown if user was not found by refrshtoken
+     */
     @GetMapping("/token/refresh")
     @ApiOperation(value = "Endpoint to access new token based on refresh token. It's needed when request with provided token fail with code 403")
     public ResponseEntity<TokenResponse> getRefreshToken(

restservice/src/main/java/com/plannaplan/controllers/UsersController.java

@@ -27,6 +27,10 @@ import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 
+/**
+ * Rest controller to assignments related endpoints. More detailed api docs is
+ * available via swagger
+ */
 @RestController
 @CrossOrigin
 @RequestMapping("/api/" + App.API_VERSION + "/users")
@@ -36,6 +40,10 @@ public class UsersController {
     @Autowired
     private UserService userService;
 
+    /**
+     * @param query to filrer userst with STUDENT role
+     * @return list found
+     */
     @GetMapping("/student/search")
     @PreAuthorize("hasRole('ROLE_DEANERY')")
     @ApiOperation(value = "Serch for user by providing query. If query is empty it will return all students. You need token with DEANERY role to call this")
@@ -46,6 +54,9 @@ public class UsersController {
         return new ResponseEntity<>(response, HttpStatus.OK);
     }
 
+    /**
+     * @return list of all studnents
+     */
     @GetMapping("/students")
     @PreAuthorize("hasRole('ROLE_DEANERY')")
     @ApiOperation(value = "Gets all students. You need token with DEANERY role to call this")
@@ -55,10 +66,16 @@ public class UsersController {
         return new ResponseEntity<>(response, HttpStatus.OK);
     }
 
+    /**
+     * @param authority USOS ID or E-mail. If user does not exist it should be USOS
+     *                  ID
+     * @return response entity was operation with succcesss
+     */
     @PostMapping(path = "/admin")
     @PreAuthorize("hasRole('ROLE_ADMIN')")
     @ApiOperation(value = "Adds new admin user.")
-    public ResponseEntity<String> addAdmin(@RequestParam("authority") @ApiParam(value = "USOS ID or E-mail. If user does not exist it should be USOS ID") String authority) {
+    public ResponseEntity<String> addAdmin(
+            @RequestParam("authority") @ApiParam(value = "USOS ID or E-mail. If user does not exist it should be USOS ID") String authority) {
         final Optional<User> userResponse = this.userService.getByAuthority(authority);
         final User user = userResponse.orElseGet(() -> new User(null, null, null, authority, UserRoles.ADMIN));
         user.setRole(UserRoles.ADMIN);
@@ -66,10 +83,16 @@ public class UsersController {
         return new ResponseEntity<>("Success", HttpStatus.OK);
     }
 
+    /**
+     * @param authority USOS ID or E-mail. If user does not exist it should be USOS
+     *                  ID
+     * @return response entity was operation with succcesss
+     */
     @PostMapping(path = "/deanery")
     @PreAuthorize("hasRole('ROLE_ADMIN')")
     @ApiOperation(value = "Adds new deanery user.")
-    public ResponseEntity<String> addDeanery(@RequestParam("authority") @ApiParam(value = "USOS ID or E-mail. If user does not exist it should be USOS ID") String authority) {
+    public ResponseEntity<String> addDeanery(
+            @RequestParam("authority") @ApiParam(value = "USOS ID or E-mail. If user does not exist it should be USOS ID") String authority) {
         final Optional<User> userResponse = this.userService.getByAuthority(authority);
         final User user = userResponse.orElseGet(() -> new User(null, null, null, authority, UserRoles.DEANERY));
         user.setRole(UserRoles.DEANERY);

restservice/src/main/java/com/plannaplan/controllers/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Provides rest controllers that defines endpoints and their accessibility
+ *
+ * @since 1.0
+ */
+package com.plannaplan.controllers;

restservice/src/main/java/com/plannaplan/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Root package of project
+ *
+ * @since 1.0
+ */
+package com.plannaplan;

restservice/src/main/java/com/plannaplan/responses/mappers/AssignmentResponseMappers.java

@@ -4,19 +4,35 @@ import java.util.List;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Objects;
+import java.util.stream.Collectors;
 
 import com.plannaplan.entities.Assignment;
 import com.plannaplan.entities.Course;
 import com.plannaplan.entities.Groups;
+import com.plannaplan.responses.models.AssignmentDetailedResponse;
 import com.plannaplan.responses.models.AssignmentResponse;
 import com.plannaplan.types.GroupType;
 
+/**
+ * Mappers for Assingnmetns to api responses
+ */
 public class AssignmentResponseMappers {
 
+    /**
+     * @param assignments lsit of assignments to be maped
+     * @return list of api responses
+     */
     public static final List<AssignmentResponse> mapToResponse(List<Assignment> assignments) {
         return mapToResponse(assignments, null);
     }
 
+    /**
+     * 
+     * @param assignments lsit of assignments to be maped
+     * @param ammounts    ammounts to be take into account
+     * @return list of api responses
+     */
     public static final List<AssignmentResponse> mapToResponse(List<Assignment> assignments,
             HashMap<Long, Integer> ammounts) {
         List<AssignmentResponse> response = new ArrayList<>();
@@ -56,4 +72,15 @@ public class AssignmentResponseMappers {
         }
         return response;
     }
+
+    /**
+     * map assignmetn to detailed response
+     * 
+     * @param assignments list of assignments to map
+     * @return list of responses
+     */
+    public static final List<AssignmentDetailedResponse> mapAssignmetnToDetialedResponse(List<Assignment> assignments) {
+        return assignments.stream().filter(Objects::nonNull).map(AssignmentDetailedResponse::new)
+                .collect(Collectors.toList());
+    }
 }

restservice/src/main/java/com/plannaplan/responses/mappers/CommisionResponseMappers.java

@@ -8,11 +8,22 @@ import com.plannaplan.entities.Commision;
 import com.plannaplan.responses.models.CommisionResponse;
 import com.plannaplan.responses.models.CommisionWithGroupsResponse;
 
+/**
+ * Mappers for Commisions to api responses
+ */
 public class CommisionResponseMappers {
+    /**
+     * @param commisions list of commisions to be mapped
+     * @return list of api responses
+     */
     public static final List<CommisionResponse> mapToResponse(List<Commision> commisions) {
         return commisions.stream().filter(Objects::nonNull).map(CommisionResponse::new).collect(Collectors.toList());
     }
 
+    /**
+     * @param commisions list of commisions to be mapped
+     * @return list of api responses
+     */
     public static final List<CommisionWithGroupsResponse> mapToResponseWithGroups(List<Commision> commisions) {
         return commisions.stream().filter(Objects::nonNull).map(CommisionWithGroupsResponse::new)
                 .collect(Collectors.toList());

restservice/src/main/java/com/plannaplan/responses/mappers/CoursesResponseMappers.java

@@ -8,11 +8,22 @@ import com.plannaplan.entities.Course;
 import com.plannaplan.responses.models.CoursesDefaultResponse;
 import com.plannaplan.responses.models.CoursesWithGroupsResponse;
 
+/**
+ * Mappers for Courses to api responses
+ */
 public class CoursesResponseMappers {
+    /**
+     * @param courses list of courses to be mapped
+     * @return list of api responses
+     */
     public static final List<CoursesDefaultResponse> mapToGetCoursesResponse(List<Course> courses) {
         return courses.stream().filter(Objects::nonNull).map(CoursesDefaultResponse::new).collect(Collectors.toList());
     }
 
+    /**
+     * @param courses list of courses to be mapped
+     * @return list of api responses
+     */
     public static final List<CoursesWithGroupsResponse> mapToGetCoursesWithGroupsResponse(List<Course> courses) {
         return courses.stream().filter(Objects::nonNull).map(CoursesWithGroupsResponse::new)
                 .collect(Collectors.toList());

restservice/src/main/java/com/plannaplan/responses/mappers/ExchangeResponseMappers.java

@@ -7,7 +7,14 @@ import java.util.stream.Collectors;
 import com.plannaplan.entities.Exchange;
 import com.plannaplan.responses.models.ExchangeResponse;
 
+/**
+ * Mappers for Exchange to api responses
+ */
 public class ExchangeResponseMappers {
+    /**
+     * @param exchanges lsit of exchanges to be mapped
+     * @return list of api responses
+     */
     public static final List<ExchangeResponse> mapToDefaultResponse(List<Exchange> exchanges) {
         return exchanges.stream().filter(Objects::nonNull).map(ExchangeResponse::new).collect(Collectors.toList());
     }

restservice/src/main/java/com/plannaplan/responses/mappers/GroupsMappers.java

@@ -13,7 +13,15 @@ import com.plannaplan.responses.models.CourseWithGroupsResponse;
 import com.plannaplan.responses.models.GroupWithCapacityResponse;
 import com.plannaplan.types.GroupType;
 
+/**
+ * Mappers for Groups to api responses
+ */
 public class GroupsMappers {
+    /**
+     * @param groups list of groups to be mapped
+     * @param taken  ammoints to be take into account
+     * @return list of api responses
+     */
     public static List<GroupDefaultResponse> mapToDefaultResponse(List<Groups> groups, HashMap<Long, Integer> taken) {
         return groups.stream().filter(Objects::nonNull).map(new Function<Groups, GroupDefaultResponse>() {
             @Override
@@ -27,10 +35,20 @@ public class GroupsMappers {
         }).collect(Collectors.toList());
     }
 
+    /**
+     * 
+     * @param groups list of groups to be mapped
+     * @return ammoints to be take into account
+     */
     public static List<GroupDefaultResponse> mapToDefaultResponse(List<Groups> groups) {
         return GroupsMappers.mapToDefaultResponse(groups, null);
     }
 
+    /**
+     * @param groups list of groups to be mapped
+     * @param taken  ammoints to be take into account
+     * @return list of api responses
+     */
     public static List<GroupWithCapacityResponse> mapToCapacityResponse(List<Groups> groups,
             HashMap<Long, Integer> taken) {
         return groups.stream().filter(Objects::nonNull).map(new Function<Groups, GroupWithCapacityResponse>() {
@@ -45,10 +63,19 @@ public class GroupsMappers {
         }).collect(Collectors.toList());
     }
 
+    /**
+     * @param groups list of groups to be mapped
+     * @return ammoints to be take into account
+     */
     public static List<GroupWithCapacityResponse> mapToCapacityResponse(List<Groups> groups) {
         return GroupsMappers.mapToCapacityResponse(groups, null);
     }
 
+    /**
+     * @param groups list of groups to be mapped
+     * @param taken  ammoints to be take into account
+     * @return list of api responses
+     */
     public static CourseWithGroupsResponse<GroupDefaultResponse> mapToGetCourseGroupsDefaultResponse(
             List<Groups> groups, HashMap<Long, Integer> taken) {
 
@@ -74,11 +101,20 @@ public class GroupsMappers {
         return new CourseWithGroupsResponse<>(classes, lectures);
     }
 
+    /**
+     * @param groups list of groups to be mapped
+     * @return ammoints to be take into account
+     */
     public static CourseWithGroupsResponse<GroupDefaultResponse> mapToGetCourseGroupsDefaultResponse(
             List<Groups> groups) {
         return GroupsMappers.mapToGetCourseGroupsDefaultResponse(groups, null);
     }
 
+    /**
+     * @param groups list of groups to be mapped
+     * @param taken  ammoints to be take into account
+     * @return list of api responses
+     */
     public static CourseWithGroupsResponse<GroupWithCapacityResponse> mapToGetCourseGroupsWithCapacityResponse(
             List<Groups> groups, HashMap<Long, Integer> taken) {
 
@@ -105,6 +141,10 @@ public class GroupsMappers {
         return new CourseWithGroupsResponse<>(classes, lectures);
     }
 
+    /**
+     * @param groups list of groups to be mapped
+     * @return ammoints to be take into account
+     */
     public static CourseWithGroupsResponse<GroupWithCapacityResponse> mapToGetCourseGroupsWithCapacityResponse(
             List<Groups> groups) {
         return GroupsMappers.mapToGetCourseGroupsWithCapacityResponse(groups, null);

restservice/src/main/java/com/plannaplan/responses/mappers/UserResponseMappers.java

@@ -7,9 +7,15 @@ import java.util.stream.Collectors;
 import com.plannaplan.entities.User;
 import com.plannaplan.responses.models.UserResponse;
 
+/**
+ * Mappers for Users to api responses
+ */
 public class UserResponseMappers {
+    /**
+     * @param groups list of groups to be mapped
+     * @return list of api responses
+     */
     public static List<UserResponse> mapToDefaultResponse(List<User> groups) {
-        return groups.stream().filter(Objects::nonNull).map(UserResponse::new)
-                .collect(Collectors.toList());
+        return groups.stream().filter(Objects::nonNull).map(UserResponse::new).collect(Collectors.toList());
     }
 }

restservice/src/main/java/com/plannaplan/responses/mappers/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Provides mappers to map mutiple entites from db to single api response
+ *
+ * @since 1.0
+ */
+package com.plannaplan.responses.mappers;

restservice/src/main/java/com/plannaplan/responses/models/AssignmentDetailedResponse.java

@@ -0,0 +1,71 @@
+package com.plannaplan.responses.models;
+
+import com.plannaplan.entities.Assignment;
+import com.plannaplan.entities.Groups;
+
+/**
+ * Assignment detailed response for api
+ */
+public class AssignmentDetailedResponse {
+    public Long id;
+    public String name;
+    private int day;
+    private String time;
+    private String endTime;
+    private String lecturer;
+
+    /**
+     * @param assignment Assignment instance to map
+     */
+    public AssignmentDetailedResponse(Assignment assignment) {
+        final Groups group = assignment.getGroup();
+        this.id = assignment.getId();
+        this.name = group.getCourseId().getName();
+        this.day = group.getDay().label;
+        this.time = group.getTimeString();
+        this.endTime = group.getEndTimeString();
+        this.lecturer = group.getLecturer().toString();
+    }
+
+    /**
+     * @return day as a value from 0-6
+     */
+    public int getDay() {
+        return day;
+    }
+
+    /**
+     * @return lecturer string fromated
+     */
+    public String getLecturer() {
+        return lecturer;
+    }
+
+    /**
+     * @return time formated string
+     */
+    public String getEndTime() {
+        return endTime;
+    }
+
+    /**
+     * @return time formated string
+     */
+    public String getTime() {
+        return time;
+    }
+
+    /**
+     * @return name of course that group belongs to
+     */
+    public String getName() {
+        return this.name;
+    }
+
+    /**
+     * @return db id of assignment
+     */
+    public Long getId() {
+        return this.id;
+    }
+}

restservice/src/main/java/com/plannaplan/responses/models/AssignmentResponse.java

@@ -8,6 +8,9 @@ import com.plannaplan.types.GroupType;
 
 import io.swagger.annotations.ApiModel;
 
+/**
+ * Assignment entity api response
+ */
 @ApiModel(description = "Response shows information about given assigment to course.", value = "AssignmentResponse")
 public class AssignmentResponse {
     private Long id;
@@ -15,6 +18,11 @@ public class AssignmentResponse {
     private GroupWithCapacityResponse classes;
     private GroupWithCapacityResponse lecture;
 
+    /**
+     * @param course  course entity
+     * @param lecture lecture Groups entity
+     * @param classes class Groups entity
+     */
     public AssignmentResponse(Course course, Groups lecture, Groups classes) {
         this.id = course.getId();
         this.name = course.getName();
@@ -22,6 +30,13 @@ public class AssignmentResponse {
         this.classes = classes == null ? null : new GroupWithCapacityResponse(classes);
     }
 
+    /**
+     * @param course   course entity
+     * @param lecture  lecture Groups entity
+     * @param classes  class Groups entity
+     * @param ammounts map with ammounts key - group id, value - ammounts of taken
+     *                 places
+     */
     public AssignmentResponse(Course course, Groups lecture, Groups classes, HashMap<Long, Integer> ammounts) {
         this.id = course.getId();
         this.name = course.getName();
@@ -29,28 +44,51 @@ public class AssignmentResponse {
         this.classes = classes == null ? null : new GroupWithCapacityResponse(classes, ammounts.get(classes.getId()));
     }
 
+    /**
+     * 
+     * @param course course entity
+     * @param group  class/lecture entity
+     */
     public AssignmentResponse(Course course, Groups group) {
         this(course, group.getType() == GroupType.LECTURE ? group : null,
                 group.getType() == GroupType.CLASS ? group : null);
     }
 
+    /**
+     * @param course   course entity
+     * @param group    class/lecture entity
+     * @param ammounts map with ammounts key - group id, value - ammounts of taken
+     *                 places
+     */
     public AssignmentResponse(Course course, Groups group, HashMap<Long, Integer> ammounts) {
         this(course, group.getType() == GroupType.LECTURE ? group : null,
                 group.getType() == GroupType.CLASS ? group : null, ammounts);
     }
 
+    /**
+     * @return Lecture in api response forms
+     */
     public GroupWithCapacityResponse getLecture() {
         return this.lecture;
     }
 
+    /**
+     * @return Class in api response forms
+     */
     public GroupWithCapacityResponse getClasses() {
         return this.classes;
     }
 
+    /**
+     * @return String course name
+     */
     public String getName() {
         return this.name;
     }
 
+    /**
+     * @return db assignment id
+     */
     public Long getId() {
         return this.id;
     }

restservice/src/main/java/com/plannaplan/responses/models/CommisionResponse.java

@@ -5,6 +5,9 @@ import com.plannaplan.entities.Commision;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 
+/**
+ * Commision api response
+ */
 @ApiModel(description = "Response shows information about commision.", value = "CommisionResponse")
 public class CommisionResponse {
     @ApiModelProperty(value = "ID created by database")
@@ -19,6 +22,9 @@ public class CommisionResponse {
     @ApiModelProperty(value = "Timestamp where the user commit the commision")
     private String commisionDate;
 
+    /**
+     * @param commision commision to map to api response
+     */
     public CommisionResponse(Commision commision) {
         this.id = commision.getId();
         this.commisionDate = commision.getCommisionDate().toString();
@@ -27,18 +33,30 @@ public class CommisionResponse {
                 : null;
     }
 
+    /**
+     * @return get Commiter user as api response
+     */
     public UserResponse getCommiter() {
         return commiter;
     }
 
+    /**
+     * @return get Owner user as api response
+     */
     public UserResponse getOwner() {
         return owner;
     }
 
+    /**
+     * @return when commision was created string formated
+     */
     public String getCommisionDate() {
         return commisionDate;
     }
 
+    /**
+     * @return db id
+     */
     public Long getId() {
         return id;
     }

restservice/src/main/java/com/plannaplan/responses/models/CommisionWithGroupsResponse.java

@@ -11,12 +11,18 @@ import com.plannaplan.entities.Commision;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 
+/**
+ * Commision With Groups api Response. It extends CommisionResponse repsone
+ */
 @ApiModel(description = "Response shows information about commision and its groups.", value = "CommisionWithGroupsResponse")
 public class CommisionWithGroupsResponse extends CommisionResponse {
 
     @ApiModelProperty(value = "List of groups ids in databse that belongs to commision")
     private List<Long> groups;
 
+    /**
+     * @param commision commision to map to api response
+     */
     public CommisionWithGroupsResponse(Commision commision) {
         super(commision);
         this.groups = commision.getAssignments().stream().filter(Objects::nonNull)
@@ -29,6 +35,9 @@ public class CommisionWithGroupsResponse extends CommisionResponse {
                 }).collect(Collectors.toList());
     }
 
+    /**
+     * @return lsit of fetured groups ids
+     */
     public List<Long> getGroups() {
         return groups;
     }

restservice/src/main/java/com/plannaplan/responses/models/CourseWithGroupsResponse.java

@@ -5,21 +5,36 @@ import java.util.List;
 
 import io.swagger.annotations.ApiModel;
 
+/**
+ * Course respose with all realted groups as api response. Alse needs to specify
+ * what type of Groups api response will be kept here. For excmaple it can be
+ * <b> GroupDefaultRespnse </b>
+ */
 @ApiModel(description = "Response shows information about groups to given course.", value = "CourseWithGroupsResponse")
-public class CourseWithGroupsResponse <T> {
+public class CourseWithGroupsResponse<T> {
 
     private List<T> lectures = new ArrayList<>();
     private List<T> classes = new ArrayList<>();
 
-    public CourseWithGroupsResponse(List<T> classes, List<T> lectures ){
+    /**
+     * @param classes  realted classes Groups instance
+     * @param lectures realted lectures Groups instance
+     */
+    public CourseWithGroupsResponse(List<T> classes, List<T> lectures) {
         this.lectures = lectures;
         this.classes = classes;
     }
 
+    /**
+     * @return realted classes Groups instance
+     */
     public List<T> getClasses() {
         return this.classes;
     }
 
+    /**
+     * @return realted lectures Groups instance
+     */
     public List<T> getLectures() {
         return this.lectures;
     }

restservice/src/main/java/com/plannaplan/responses/models/CoursesDefaultResponse.java

@@ -5,9 +5,21 @@ import com.plannaplan.responses.models.abstracts.CoursesResponse;
 
 import io.swagger.annotations.ApiModel;
 
+/**
+ * Courses Default Api Response. It extends abstract response - CoursesResponse.
+ * It was one of first repsones created in system. Later we resigned from
+ * asbstract and used settig
+ * <code>spring.jackson.default-property-inclusion = NON_NULL</code> in
+ * properties instead.
+ */
 @ApiModel(description = "Response shows information about course.", value = "CoursesDefaultResponse")
 public class CoursesDefaultResponse extends CoursesResponse {
 
+    /**
+     * create new instance
+     * 
+     * @param course course to map to api response
+     */
     public CoursesDefaultResponse(Course course) {
         super(course);
     }

restservice/src/main/java/com/plannaplan/responses/models/CoursesWithGroupsResponse.java

@@ -9,12 +9,24 @@ import com.plannaplan.types.GroupType;
 
 import io.swagger.annotations.ApiModel;
 
+/**
+ * Courses With Groups Api Response . It extends abstract response -
+ * CoursesResponse. It was one of first repsones created in system. Later we
+ * resigned from asbstract and used settig
+ * <code>spring.jackson.default-property-inclusion = NON_NULL</code> in
+ * properties instead.
+ */
 @ApiModel(description = "Response shows information about groups to given course.", value = "CoursesWithGroupsResponse")
 public class CoursesWithGroupsResponse extends CoursesResponse {
 
     private List<GroupWithCapacityResponse> lectures = new ArrayList<>();
     private List<GroupWithCapacityResponse> classes = new ArrayList<>();
 
+    /**
+     * create new instance
+     * 
+     * @param course course to map to api response
+     */
     public CoursesWithGroupsResponse(Course course) {
         super(course);
         course.getGroups().stream().forEach(group -> {
@@ -26,6 +38,12 @@ public class CoursesWithGroupsResponse extends CoursesResponse {
         });
     }
 
+    /**
+     * 
+     * @param course   course to map to api response
+     * @param lectures list of api resposnes of lectures
+     * @param classes  list of api resposnes of classes
+     */
     public CoursesWithGroupsResponse(Course course, List<GroupWithCapacityResponse> lectures,
             List<GroupWithCapacityResponse> classes) {
         super(course);
@@ -33,10 +51,16 @@ public class CoursesWithGroupsResponse extends CoursesResponse {
         this.classes = classes;
     }
 
+    /**
+     * @return list of api resposnes of classes
+     */
     public List<GroupWithCapacityResponse> getClasses() {
         return this.classes;
     }
 
+    /**
+     * @return list of api resposnes of lectures
+     */
     public List<GroupWithCapacityResponse> getLectures() {
         return this.lectures;
     }

restservice/src/main/java/com/plannaplan/responses/models/ExchangeResponse.java

@@ -2,35 +2,72 @@ package com.plannaplan.responses.models;
 
 import com.plannaplan.entities.Exchange;
 
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+
+/**
+ * Exchange proposal api repsonse
+ */
+@ApiModel(description = "Response shows information about user exchanges", value = "CourseWithGroupsResponse")
 public class ExchangeResponse {
-    private Long id;
-    private GroupDefaultResponse ownedAssignment;
-    private GroupDefaultResponse desiredGroup;
+	@ApiModelProperty(value = "Database id")
+	private Long id;
+	@ApiModelProperty(value = "Assignmetn that user want to trade")
+	private GroupDefaultResponse ownedAssignment;
+	@ApiModelProperty(value = "Group that user want to get")
+	private GroupDefaultResponse desiredGroup;
 
-    public ExchangeResponse(Exchange exchange){
-        this.id = exchange.getId();
-        this.ownedAssignment = new GroupDefaultResponse(exchange.getOwnedAssignment().getGroup());
-        this.desiredGroup = new GroupDefaultResponse(exchange.getDesiredAssignment());
-    }
+	/**
+	 * creat new instance
+	 * 
+	 * @param exchange entity to map to api repsone
+	 */
+	public ExchangeResponse(Exchange exchange) {
+		this.id = exchange.getId();
+		this.ownedAssignment = new GroupDefaultResponse(exchange.getOwnedAssignment().getGroup());
+		this.desiredGroup = new GroupDefaultResponse(exchange.getDesiredAssignment());
+	}
 
+	/**
+	 * @return get api respondse of wanted byt user group
+	 */
 	public GroupDefaultResponse getDesiredGroup() {
 		return desiredGroup;
 	}
+
+	/**
+	 * @param desiredGroup set api respondse of wanted byt user group
+	 */
 	public void setDesiredGroup(GroupDefaultResponse desiredGroup) {
 		this.desiredGroup = desiredGroup;
 	}
+
+	/**
+	 * @return get api respondse of owned user group
+	 */
 	public GroupDefaultResponse getOwnedAssignment() {
 		return ownedAssignment;
 	}
+
+	/**
+	 * @param ownedAssignment set api respondse of owned user group
+	 */
 	public void setOwnedAssignment(GroupDefaultResponse ownedAssignment) {
 		this.ownedAssignment = ownedAssignment;
 	}
+
+	/**
+	 * @return database id
+	 */
 	public Long getId() {
 		return id;
 	}
+
+	/**
+	 * @param id set database id
+	 */
 	public void setId(Long id) {
 		this.id = id;
 	}
 
-    
 }

restservice/src/main/java/com/plannaplan/responses/models/GroupDefaultResponse.java

@@ -8,6 +8,9 @@ import com.plannaplan.types.GroupType;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 
+/**
+ * Default api response for Groups entity
+ */
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @ApiModel(description = "Response shows information about given group.", value = "GroupDefaultResponse")
 public class GroupDefaultResponse {
@@ -36,6 +39,11 @@ public class GroupDefaultResponse {
     @ApiModelProperty(value = "Value shows how many places is already taken by other students.")
     private Integer takenPlaces;
 
+    /**
+     * creat new entity
+     * 
+     * @param group entity to map to api response
+     */
     public GroupDefaultResponse(Groups group) {
         this.id = group.getId() != null ? group.getId() : null;
         this.day = group.getDay() != null ? group.getDay().label : -1;
@@ -46,43 +54,77 @@ public class GroupDefaultResponse {
         this.type = group.getType() != null ? group.getType() : null;
     }
 
+    /**
+     * 
+     * @param group       entity to map to api response
+     * @param takenPlaces ammount of taken places for group by other users
+     */
     public GroupDefaultResponse(Groups group, int takenPlaces) {
         this(group);
         this.takenPlaces = takenPlaces;
     }
 
+    /**
+     * creat new entity
+     * 
+     * @param assignment entity to map to api response
+     */
     public GroupDefaultResponse(Assignment assignment) {
         this(assignment.getGroup());
     }
 
+    /**
+     * @return what typew of group is this (lecture or class)
+     */
     public GroupType getType() {
         return type;
     }
 
+    /**
+     * @return room where classes will take place
+     */
     public String getRoom() {
         return room;
     }
 
+    /**
+     * @return name of group lecturer
+     */
     public String getLecturer() {
         return lecturer;
     }
 
+    /**
+     * @return time when group is scheduled on
+     */
     public String getTime() {
         return time;
     }
 
+    /**
+     * @return time when class ends
+     */
     public String getEndTime() {
         return endTime;
     }
 
+    /**
+     * @return int what day is it. 0-6 (Monday - Sunday)
+     */
     public int getDay() {
         return day;
     }
 
+    /**
+     * @return db id
+     */
     public Long getId() {
         return id;
     }
 
+    /**
+     * @return ammount of taken places for group by other users
+     */
     public Integer getTakenPlaces() {
         return this.takenPlaces;
     }

restservice/src/main/java/com/plannaplan/responses/models/GroupWithCapacityResponse.java

@@ -4,29 +4,57 @@ import com.plannaplan.entities.Assignment;
 import com.plannaplan.entities.Groups;
 import io.swagger.annotations.ApiModel;
 
+/**
+ * Group api response featuring group capacity
+ */
 @ApiModel(description = "Response shows information about group with included capacity.", value = "GroupWithCapacityResponse")
 public class GroupWithCapacityResponse extends GroupDefaultResponse {
 
     private int capacity;
 
+    /**
+     * create new instance
+     * 
+     * @param group entity to map to api response
+     */
     public GroupWithCapacityResponse(Groups group) {
         super(group);
         this.capacity = group.getCapacity();
     }
 
+    /**
+     * create new instance
+     * 
+     * @param group       entity to map to api response
+     * @param takenPlaces group taken places
+     */
     public GroupWithCapacityResponse(Groups group, int takenPlaces) {
         super(group, takenPlaces);
         this.capacity = group.getCapacity();
     }
 
+    /**
+     * create new instance
+     * 
+     * @param assignment entity to map to api response
+     */
     public GroupWithCapacityResponse(Assignment assignment) {
         this(assignment.getGroup());
     }
 
+    /**
+     * create new instance
+     * 
+     * @param assignment  entity to map to api response
+     * @param takenPlaces group taken places
+     */
     public GroupWithCapacityResponse(Assignment assignment, int takenPlaces) {
         this(assignment.getGroup(), takenPlaces);
     }
 
+    /**
+     * @return group taken places
+     */
     public int getCapacity() {
         return capacity;
     }

restservice/src/main/java/com/plannaplan/responses/models/TokenResponse.java

@@ -5,6 +5,9 @@ import com.plannaplan.entities.User;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 
+/**
+ * Response to show after successfully login cation
+ */
 @ApiModel(description = "Response shows information about logged user.", value = "TokenResponse")
 public class TokenResponse {
     @ApiModelProperty(value = "user token used to verify requests")
@@ -18,6 +21,9 @@ public class TokenResponse {
     @ApiModelProperty(value = "user unviersity email")
     private String email;
 
+    /**
+     * @param user user to be mapped to api response
+     */
     public TokenResponse(User user) {
         this.id = user.getId();
         this.authorityRole = user.getRole().toString();
@@ -26,22 +32,37 @@ public class TokenResponse {
         this.refreshToken = user.getRefreshToken();
     }
 
+    /**
+     * @return user email
+     */
     public String getEmail() {
         return email;
     }
 
+    /**
+     * @return user role in system
+     */
     public String getAuthorityRole() {
         return authorityRole;
     }
 
+    /**
+     * @return db id
+     */
     public Long getId() {
         return id;
     }
 
+    /**
+     * @return user token to authorize other requests
+     */
     public String getToken() {
         return token;
     }
 
+    /**
+     * @return user refresh token
+     */
     public String getRefreshToken() {
         return this.refreshToken;
     }

restservice/src/main/java/com/plannaplan/responses/models/UserResponse.java

@@ -4,6 +4,9 @@ import com.plannaplan.entities.User;
 
 import io.swagger.annotations.ApiModel;
 
+/**
+ * Model for api response for user serach results.
+ */
 @ApiModel(description = "Response shows information about user.", value = "UserResponse")
 public class UserResponse {
 
@@ -12,6 +15,9 @@ public class UserResponse {
     private String surname;
     private String email;
 
+    /**
+     * @param user entity to be mapped to api response
+     */
     public UserResponse(User user) {
         this.id = user.getId();
         this.name = user.getName() != null ? user.getName() : "";
@@ -19,18 +25,30 @@ public class UserResponse {
         this.email = user.getEmail();
     }
 
+    /**
+     * @return user email
+     */
     public String getEmail() {
         return email;
     }
 
+    /**
+     * @return user surname
+     */
     public String getSurname() {
         return surname;
     }
 
+    /**
+     * @return user name
+     */
     public String getName() {
         return name;
     }
 
+    /**
+     * @return db id
+     */
     public Long getId() {
         return id;
     }

restservice/src/main/java/com/plannaplan/responses/models/abstracts/CoursesResponse.java

@@ -2,20 +2,34 @@ package com.plannaplan.responses.models.abstracts;
 
 import com.plannaplan.entities.Course;
 
+/**
+ * Course entity api response
+ */
 public abstract class CoursesResponse {
 
     private Long id;
     private String name;
 
+    /**
+     * create instance
+     * 
+     * @param course entity to map to api response
+     */
     public CoursesResponse(Course course) {
         this.id = course.getId() != null ? course.getId() : null;
         this.name = course.getName() != null ? course.getName() : "";
     }
 
+    /**
+     * @return course name
+     */
     public String getName() {
         return name;
     }
 
+    /**
+     * @return db id
+     */
     public Long getId() {
         return id;
     }

restservice/src/main/java/com/plannaplan/responses/models/abstracts/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Abstract api responses
+ *
+ * @since 1.0
+ */
+package com.plannaplan.responses.models.abstracts;

restservice/src/main/java/com/plannaplan/responses/models/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Provides models of all possible api responses. Convention for naming this
+ * class is EntityModifierRepsone. For Example CourseDefaultResponse
+ *
+ * @since 1.0
+ */
+package com.plannaplan.responses.models;

restservice/src/main/java/com/plannaplan/responses/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Contains packeges realted to creating api responses
+ *
+ * @since 1.0
+ */
+package com.plannaplan.responses;

restservice/src/main/java/com/plannaplan/security/AuthenticationFilter.java

@@ -17,6 +17,9 @@ import org.springframework.security.web.util.matcher.RequestMatcher;
 
 import static org.springframework.http.HttpHeaders.AUTHORIZATION;
 
+/**
+ * Spring authentication filter class
+ */
 public class AuthenticationFilter extends AbstractAuthenticationProcessingFilter {
 
     AuthenticationFilter(final RequestMatcher requiresAuth) {

restservice/src/main/java/com/plannaplan/security/AuthenticationProvider.java

@@ -16,6 +16,9 @@ import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.security.core.userdetails.UsernameNotFoundException;
 import org.springframework.stereotype.Component;
 
+/**
+ * Spring authentication provider
+ */
 @Component
 public class AuthenticationProvider extends AbstractUserDetailsAuthenticationProvider {
 
@@ -25,8 +28,6 @@ public class AuthenticationProvider extends AbstractUserDetailsAuthenticationPro
     @Override
     protected void additionalAuthenticationChecks(UserDetails userDetails,
             UsernamePasswordAuthenticationToken authentication) throws AuthenticationException {
-        // is being done in other task
-
     }
 
     @Override

restservice/src/main/java/com/plannaplan/security/AuthorityRoles.java

@@ -6,6 +6,9 @@ import com.plannaplan.types.UserRoles;
 
 import org.springframework.security.core.GrantedAuthority;
 
+/**
+ * Users Roles for spring app
+ */
 public enum AuthorityRoles implements GrantedAuthority {
     STUDENT("ROLE_STUDENT"), DEANERY("ROLE_DEANERY"), ADMIN("ROLE_ADMIN"), TEST_USER("ROLE_TESTUSER");
 
@@ -20,6 +23,12 @@ public enum AuthorityRoles implements GrantedAuthority {
         return this.role;
     }
 
+    /**
+     * map buisness logic UserRoles enum to spring enum
+     * 
+     * @param role buisness logic enum
+     * @return restservice AuthorityRoles enum
+     */
     public static final Optional<AuthorityRoles> getAuthorityRole(UserRoles role) {
         switch (role) {
             case ADMIN:

restservice/src/main/java/com/plannaplan/security/WebSecurityConfig.java

@@ -16,9 +16,11 @@ import org.springframework.http.HttpStatus;
 import org.springframework.security.web.authentication.AnonymousAuthenticationFilter;
 import org.springframework.security.web.authentication.HttpStatusEntryPoint;
 
+/**
+ * Spring config class for security
+ */
 @Configuration
 @EnableWebSecurity
-
 public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
 
     private static final RequestMatcher PROTECTED_URLS = new OrRequestMatcher(new AntPathRequestMatcher("/api/**"));

restservice/src/main/java/com/plannaplan/security/cas/CasUserIdentity.java

@@ -1,19 +1,36 @@
 package com.plannaplan.security.cas;
 
+/**
+ * Model to keep data from Cas response. It's important to remember that wee
+ * need to register our domain name in CAS in order to get this data. Otherwise
+ * CAS will retuned what user typed as login.
+ */
 public class CasUserIdentity {
     private String usosId;
     private String email;
-    
-    public CasUserIdentity(String usosId, String email){
+
+    /**
+     * creates new instance
+     * 
+     * @param usosId usosId retured from CAS
+     * @param email  emial returned from CAS
+     */
+    public CasUserIdentity(String usosId, String email) {
         this.usosId = usosId;
         this.email = email;
     }
 
+    /**
+     * @return string with usosid
+     */
     public String getUsosId() {
         return usosId;
-    } 
+    }
 
+    /**
+     * @return string with email
+     */
     public String getEmail() {
         return email;
-    } 
+    }
 }

restservice/src/main/java/com/plannaplan/security/cas/CasValidationExcepiton.java

@@ -1,9 +1,9 @@
 package com.plannaplan.security.cas;
 
+/**
+ * Exception to throw when cas didn't validate provided ticket
+ */
 public class CasValidationExcepiton extends RuntimeException {
-    /**
-     *
-     */
     private static final long serialVersionUID = 1L;
 
     public CasValidationExcepiton(String s) {

restservice/src/main/java/com/plannaplan/security/cas/CasValidator.java

@@ -1,6 +1,17 @@
 package com.plannaplan.security.cas;
 
+/**
+ * We can authorize in different contexts. For example if we rgister our domain
+ * we will get more info than on localhost. This abstraction let's us handle
+ * both cases based on spring profile
+ */
 public interface CasValidator {
- 
+
+    /**
+     * validate ticket (should be provided in costructor or by setter)
+     * 
+     * @return CasUserIdentity instance with values from response or null if
+     *         validation failed
+     */
     CasUserIdentity validate();
 }

restservice/src/main/java/com/plannaplan/security/cas/CustomUAMCasValidator.java

@@ -4,6 +4,10 @@ import org.jasig.cas.client.validation.Assertion;
 import org.jasig.cas.client.validation.Cas20ServiceTicketValidator;
 import org.jasig.cas.client.validation.TicketValidationException;
 
+/**
+ * Cas Validator for UAM with domain registered for email and usosid as a
+ * repsonse
+ */
 public class CustomUAMCasValidator implements CasValidator {
     private static String CAS_URL = "https://cas.amu.edu.pl/cas";
     private static String EMAIL_FIELD = "mail";
@@ -11,31 +15,36 @@ public class CustomUAMCasValidator implements CasValidator {
     private String service;
     private String ticket;
 
-    public CustomUAMCasValidator(String service, String ticket){
+    /**
+     * craste new instance
+     * 
+     * @param service string with url of our service from where request began
+     * @param ticket  ticket returned after user provided creeds on cas page
+     */
+    public CustomUAMCasValidator(String service, String ticket) {
         this.service = service;
         this.ticket = ticket;
     }
 
     @Override
     public CasUserIdentity validate() {
-        /* 
-        * TO DO 
-        * Dodać case z CAS10/CAS20/CAS30
-        */
         final Cas20ServiceTicketValidator validator = new Cas20ServiceTicketValidator(CustomUAMCasValidator.CAS_URL);
 
         try {
             final Assertion assertion = validator.validate(this.ticket, this.service);
-            
+
             if (assertion == null) {
-                throw new CasValidationExcepiton("Validation failed. Assertion could not be retrieved for ticket " + "");
+                throw new CasValidationExcepiton(
+                        "Validation failed. Assertion could not be retrieved for ticket " + "");
             }
 
-            final String usosid = assertion.getPrincipal().getAttributes().get(CustomUAMCasValidator.USOS_ID).toString();
-            
-            final String mail = assertion.getPrincipal().getAttributes().get(CustomUAMCasValidator.EMAIL_FIELD).toString();
+            final String usosid = assertion.getPrincipal().getAttributes().get(CustomUAMCasValidator.USOS_ID)
+                    .toString();
 
-            return new CasUserIdentity(usosid,mail);
+            final String mail = assertion.getPrincipal().getAttributes().get(CustomUAMCasValidator.EMAIL_FIELD)
+                    .toString();
+
+            return new CasUserIdentity(usosid, mail);
 
         } catch (TicketValidationException e) {
             e.printStackTrace();

restservice/src/main/java/com/plannaplan/security/cas/DefaultUAMCasValidator.java

@@ -9,12 +9,21 @@ import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClients;
 import org.apache.http.util.EntityUtils;
 
+/**
+ * Cas Validator for localhost and not registered dopmains
+ */
 public class DefaultUAMCasValidator implements CasValidator {
     private static String CAS_URL = "https://cas.amu.edu.pl/cas";
     private final CloseableHttpClient httpClient = HttpClients.createDefault();
     private String service;
     private String ticket;
 
+    /**
+     * craste new instance
+     * 
+     * @param service string with url of our service from where request began
+     * @param ticket  ticket returned after user provided creeds on cas page
+     */
     public DefaultUAMCasValidator(String service, String ticket) {
         this.service = service;
         this.ticket = ticket;
@@ -39,13 +48,13 @@ public class DefaultUAMCasValidator implements CasValidator {
                 }
 
                 String res = result.substring(result.indexOf('\n') + 1);
-                return new CasUserIdentity(null,res);
+                return new CasUserIdentity(null, res);
 
             }
         }
 
         catch (Exception e) {
-            throw new CasValidationExcepiton("Cas Validation has failed."); 
+            throw new CasValidationExcepiton("Cas Validation has failed.");
         }
     }
 }

restservice/src/main/java/com/plannaplan/security/cas/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * All calsses realted to authorizing user with CAS system.
+ *
+ * @since 1.0
+ */
+package com.plannaplan.security.cas;

restservice/src/main/java/com/plannaplan/security/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * All classes realted to seciuirty includin spring secuirty and cas
+ * authentication
+ *
+ * @since 1.0
+ */
+package com.plannaplan.security;

restservice/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -14,6 +14,21 @@
             "name": "plannaplan.email",
             "type": "java.lang.String",
             "description": "Email from which app sends message"
+        },
+        {
+            "name": "plannaplan.apiurl",
+            "type": "java.lang.String",
+            "description": "Url to usos api endpoints"
+        },
+        {
+            "name": "plannaplan.apikey",
+            "type": "java.lang.String",
+            "description": "Api consumer key"
+        },
+        {
+            "name": "plannaplan.apisecret",
+            "type": "java.lang.String",
+            "description": "Api consumer secret"
         }
     ]
 }

restservice/src/test/java/com/plannaplan/controllers/CommisionControllerTest.java

@@ -18,6 +18,7 @@ import com.plannaplan.entities.User;
 import com.plannaplan.services.UserService;
 import com.plannaplan.types.UserRoles;
 
+import static org.junit.Assert.assertTrue;
 import static org.springframework.security.test.web.servlet.setup.SecurityMockMvcConfigurers.*;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
@@ -31,11 +32,13 @@ public class CommisionControllerTest extends AbstractControllerTest {
     private UserService service;
 
     private static User user;
+    private static User admin;
     private static User otherUser;
     private static User asker;
     private static User otherAsker;
 
     private static final String TEST_COMMISIONS_STUDENT_EMAIL = "commisions.student@notexisting.domain";
+    private static final String TEST_COMMISIONS_ADMIN_EMAIL = "commisions.admin@notexisiting,domain";
     private static final String TEST_COMMISIONS_OTHER_STUDENT_EMAIL = "commisions.student2@notexisting.domain";
     private static final String TEST_COMMISIONS_DEANERY_EMAIL = "commisions.deanery@notexisting.domain";
     private static final String TEST_COMMISIONS_OTHER_DEANERY_EMAIL = "commisions.deanery2@notexisting.domain";
@@ -44,6 +47,9 @@ public class CommisionControllerTest extends AbstractControllerTest {
     private static final String GET_COMMISIONS_ENDPOINT = "/api/v1/commisions/user";
     private static final String GET_SOMEONE_COMMISIONS_ENDPOINT = "/api/v1/commisions/user";
     private static final String GET_USER_SCHEDULE_ENDPOINT = "/api/v1/commisions/user/schedule";
+    private static final String GET_ASSIGNMENTS_ENDPOINT = "/api/v1/commisions/user/assignments";
+
+    private static final String EXPORT_DATA = "/api/v1/commisions/export/csv";
 
     private static final MediaType APPLICATION_JSON_UTF8 = new MediaType(MediaType.APPLICATION_JSON.getType(),
             MediaType.APPLICATION_JSON.getSubtype(), Charset.forName("utf8"));
@@ -67,14 +73,14 @@ public class CommisionControllerTest extends AbstractControllerTest {
     }
 
     @Test
-    public void shouldReturnOkAddingCommision() throws Exception {
+    public void shouldFailAddingCommisionDueToWrongTour() throws Exception {
         this.checkUsers();
         final User user = this.service.checkForUser(TEST_COMMISIONS_STUDENT_EMAIL, null);
         final String token = this.service.login(user).getToken();
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
         mockMvc.perform(post(ADD_COMMISION_ENDPOINT).header("Authorization", "Bearer " + token)
-                .contentType(APPLICATION_JSON_UTF8).content("[]")).andExpect(status().isOk());
+                .contentType(APPLICATION_JSON_UTF8).content("[]")).andExpect(status().is4xxClientError());
     }
 
     @Test
@@ -95,15 +101,16 @@ public class CommisionControllerTest extends AbstractControllerTest {
     }
 
     @Test
-    public void shouldAddCommisionWithSelfIdPrivided() throws Exception {
+    public void shouldFailAddingCommisionWithSelfIdPrividedDueToWrongTour() throws Exception {
         this.checkUsers();
+
         final User user = this.service.checkForUser(TEST_COMMISIONS_STUDENT_EMAIL, null);
         final String token = this.service.login(user).getToken();
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
         mockMvc.perform(post(ADD_COMMISION_ENDPOINT + "/" + CommisionControllerTest.user.getId().toString())
                 .header("Authorization", "Bearer " + token).contentType(APPLICATION_JSON_UTF8).content("[]"))
-                .andExpect(status().isOk());
+                .andExpect(status().is4xxClientError());
     }
 
     @Test
@@ -253,6 +260,10 @@ public class CommisionControllerTest extends AbstractControllerTest {
                     UserRoles.STUDENT);
             this.service.save(otherUser);
         }
+        if (CommisionControllerTest.admin == null) {
+            CommisionControllerTest.admin = new User(null, null, TEST_COMMISIONS_ADMIN_EMAIL, UserRoles.ADMIN);
+            this.service.save(admin);
+        }
         if (CommisionControllerTest.asker == null) {
             CommisionControllerTest.asker = new User(null, null, TEST_COMMISIONS_DEANERY_EMAIL, UserRoles.DEANERY);
             this.service.save(asker);
@@ -263,4 +274,50 @@ public class CommisionControllerTest extends AbstractControllerTest {
             this.service.save(otherAsker);
         }
     }
+
+    @Test
+    public void shouldExportData() throws Exception {
+        this.checkUsers();
+        final User admin = this.service.checkForUser(TEST_COMMISIONS_ADMIN_EMAIL, null);
+        final String token = this.service.login(admin).getToken();
+
+        MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
+        mockMvc.perform(get(EXPORT_DATA).header("Authorization", "Bearer " + token)).andExpect(status().isOk());
+    }
+
+    @Test
+    public void shouldNotExportDataDueToWrongPermision() throws Exception {
+        this.checkUsers();
+        final User student = this.service.checkForUser(TEST_COMMISIONS_STUDENT_EMAIL, null);
+        final String token = this.service.login(student).getToken();
+
+        MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
+        mockMvc.perform(get(EXPORT_DATA).header("Authorization", "Bearer " + token))
+                .andExpect(status().is4xxClientError());
+    }
+
+    @Test
+    public void shouldExportDataBeCsvFile() throws Exception {
+        this.checkUsers();
+        final User admin = this.service.checkForUser(TEST_COMMISIONS_ADMIN_EMAIL, null);
+        final String token = this.service.login(admin).getToken();
+
+        MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
+
+        assertTrue(
+                mockMvc.perform(get(EXPORT_DATA).header("Authorization", "Bearer " + token)).andExpect(status().isOk())
+                        .andReturn().getResponse().getContentAsString().contains("user_id, zaj_cykl_id, gr_nr"));
+    }
+
+    @Test
+    public void shouldRetrunOkForAssignmentEnpoint() throws Exception {
+        this.checkUsers();
+        final User admin = this.service.checkForUser(TEST_COMMISIONS_STUDENT_EMAIL, null);
+        final String token = this.service.login(admin).getToken();
+
+        MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
+
+        mockMvc.perform(get(GET_ASSIGNMENTS_ENDPOINT).header("Authorization", "Bearer " + token))
+                .andExpect(status().isOk());
+    }
 }

restservice/src/test/java/com/plannaplan/controllers/ExchangeControllerTest.java

@@ -22,11 +22,13 @@ import java.nio.charset.Charset;
 
 import com.plannaplan.entities.Assignment;
 import com.plannaplan.entities.Commision;
+import com.plannaplan.entities.Course;
 import com.plannaplan.entities.Exchange;
 import com.plannaplan.entities.Groups;
 import com.plannaplan.entities.User;
 import com.plannaplan.services.AssignmentService;
 import com.plannaplan.services.CommisionService;
+import com.plannaplan.services.CourseService;
 import com.plannaplan.services.ExchangeService;
 import com.plannaplan.services.GroupService;
 import com.plannaplan.services.UserService;
@@ -57,11 +59,14 @@ public class ExchangeControllerTest extends AbstractControllerTest {
     @Autowired
     private ExchangeService exchangeService;
 
+    @Autowired
+    private CourseService courseService;
+
     @Test
     @DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
     public void shouldGetAllUsersExchanges() throws Exception {
         final User user = this.userService.save(new User(null, null,
-        "shouldGetAllUsersExchanges@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
+                "shouldGetAllUsersExchanges@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
         final String token = this.userService.login(user).getToken();
         final Groups group = this.groupService.save(new Groups(215, "A2-2", null, 520, WeekDay.TUESDAY, null));
         final Groups groupDesired = this.groupService.save(new Groups(216, "A2-3", null, 530, WeekDay.MONDAY, null));
@@ -70,26 +75,27 @@ public class ExchangeControllerTest extends AbstractControllerTest {
         this.exchangeService.save(new Exchange(assignment, groupDesired));
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(get(EXCHANGE_ENDPOINT + "/all").header("Authorization", "Bearer " +
-        token)).andExpect(status().isOk());
+        mockMvc.perform(get(EXCHANGE_ENDPOINT + "/all").header("Authorization", "Bearer " + token))
+                .andExpect(status().isOk());
     }
 
     @Test
     public void shouldFailGettingNotExistingExchange() throws Exception {
         final User user = this.userService.save(new User(null, null,
-                                "shouldFailGettingNotExistingExchange@ExchangeController.test", UserRoles.STUDENT));
+                "shouldFailGettingNotExistingExchange@ExchangeController.test", UserRoles.STUDENT));
 
         final String token = this.userService.login(user).getToken();
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(get(EXCHANGE_ENDPOINT + "/" + user.getId()).header("Authorization", "Bearer " + token)).andExpect(status().isBadRequest());
+        mockMvc.perform(get(EXCHANGE_ENDPOINT + "/" + user.getId()).header("Authorization", "Bearer " + token))
+                .andExpect(status().isBadRequest());
     }
 
     @Test
     @DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
-    public void shouldGetSingleExchange() throws Exception{
-        final User user = this.userService.save(new User(null, null,
-                                "shouldGetSingleExchange@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
+    public void shouldGetSingleExchange() throws Exception {
+        final User user = this.userService.save(new User(null, null, "shouldGetSingleExchange@ExchangeController.test",
+                "11111", UserRoles.STUDENT, 320));
         final String token = this.userService.login(user).getToken();
         final Groups group = this.groupService.save(new Groups(215, "A2-2", null, 520, WeekDay.TUESDAY, null));
         final Groups groupDesired = this.groupService.save(new Groups(216, "A2-3", null, 530, WeekDay.MONDAY, null));
@@ -98,14 +104,14 @@ public class ExchangeControllerTest extends AbstractControllerTest {
         final Exchange exchange = this.exchangeService.save(new Exchange(assignment, groupDesired));
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(get(EXCHANGE_ENDPOINT + "/" + exchange.getId()).header("Authorization", "Bearer " +
-        token)).andExpect(status().isOk());
+        mockMvc.perform(get(EXCHANGE_ENDPOINT + "/" + exchange.getId()).header("Authorization", "Bearer " + token))
+                .andExpect(status().isOk());
     }
 
     @Test
-    public void shouldFailGettingExchangeDueToPermission() throws Exception{
+    public void shouldFailGettingExchangeDueToPermission() throws Exception {
         final User user = this.userService.save(new User(null, null,
-                                "shouldFailGettingExchangeDueToPermission@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
+                "shouldFailGettingExchangeDueToPermission@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
         final Groups group = this.groupService.save(new Groups(215, "A2-2", null, 520, WeekDay.TUESDAY, null));
         final Groups groupDesired = this.groupService.save(new Groups(216, "A2-3", null, 530, WeekDay.MONDAY, null));
         final Commision commision = this.commisionService.save(new Commision(user));
@@ -113,32 +119,33 @@ public class ExchangeControllerTest extends AbstractControllerTest {
         final Exchange exchange = this.exchangeService.save(new Exchange(assignment, groupDesired));
 
         final User user2 = this.userService.save(new User(null, null,
-                                "shouldFailGettingExchangeDueToPermission2@ExchangeController.test", "11112", UserRoles.STUDENT, 321));
+                "shouldFailGettingExchangeDueToPermission2@ExchangeController.test", "11112", UserRoles.STUDENT, 321));
         final String token2 = this.userService.login(user2).getToken();
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(post(EXCHANGE_ENDPOINT + "/" + exchange.getId()).header("Authorization", "Bearer " +
-        token2)).andExpect(status().is4xxClientError());
+        mockMvc.perform(post(EXCHANGE_ENDPOINT + "/" + exchange.getId()).header("Authorization", "Bearer " + token2))
+                .andExpect(status().is4xxClientError());
     }
 
     @Test
-    public void shouldFailPostDueToAssignmentNotFound() throws Exception{
+    public void shouldFailPostDueToAssignmentNotFound() throws Exception {
         final User user = this.userService.save(new User(null, null,
-                                "shouldFailPostDueToAssignmentNotFound@ExchangeController.test", UserRoles.STUDENT));
+                "shouldFailPostDueToAssignmentNotFound@ExchangeController.test", UserRoles.STUDENT));
         final String token = this.userService.login(user).getToken();
         final Groups group = this.groupService.save(new Groups(212, "A2-1", null, 420, WeekDay.WEDNESDAY, null));
 
-        MockMvc mockMvc =
-        MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " +
-        token).contentType(APPLICATION_JSON_UTF8).content("{\"assignment\": "+ user.getId() +", \"group\": "+ group.getId() +" }")).andExpect(status().isBadRequest());
+        MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
+        mockMvc.perform(
+                post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token).contentType(APPLICATION_JSON_UTF8)
+                        .content("{\"assignment\": " + user.getId() + ", \"group\": " + group.getId() + " }"))
+                .andExpect(status().isBadRequest());
     }
 
     @Test
     @DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
-    public void shouldInsertExchange() throws Exception{
-        final User user = this.userService.save(new User(null, null,
-                                "shouldInsertExchange@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
+    public void shouldInsertExchange() throws Exception {
+        final User user = this.userService.save(
+                new User(null, null, "shouldInsertExchange@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
         final String token = this.userService.login(user).getToken();
         final Groups group = this.groupService.save(new Groups(215, "A2-2", null, 520, WeekDay.TUESDAY, null));
         final Groups groupDesired = this.groupService.save(new Groups(216, "A2-3", null, 530, WeekDay.MONDAY, null));
@@ -148,49 +155,55 @@ public class ExchangeControllerTest extends AbstractControllerTest {
         this.assignmentService.callAcceptAlgorythm();
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " +
-        token).contentType(APPLICATION_JSON_UTF8).content("{\"assignment\": "+ assignment.getId() +", \"group\": "+ groupDesired.getId() +" }")).andExpect(status().isOk());
+        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token)
+                .contentType(APPLICATION_JSON_UTF8)
+                .content("{\"assignment\": " + assignment.getId() + ", \"group\": " + groupDesired.getId() + " }"))
+                .andExpect(status().isOk());
     }
 
     @Test
-    public void shouldFailInsertExchangeDueToMissingGroup() throws Exception{
+    public void shouldFailInsertExchangeDueToMissingGroup() throws Exception {
         final User user = this.userService.save(new User(null, null,
-                                "shouldFailInsertExchangeDueToMissingGroup@ExchangeController.test", UserRoles.STUDENT));
+                "shouldFailInsertExchangeDueToMissingGroup@ExchangeController.test", UserRoles.STUDENT));
         final String token = this.userService.login(user).getToken();
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " +
-        token).contentType(APPLICATION_JSON_UTF8).content("{\"assignment\": "+ user.getId() +" }")).andExpect(status().isBadRequest());
+        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token)
+                .contentType(APPLICATION_JSON_UTF8).content("{\"assignment\": " + user.getId() + " }"))
+                .andExpect(status().isBadRequest());
     }
 
     @Test
-    public void shouldFailInsertExchangeDueToMissingAssignment() throws Exception{
+    public void shouldFailInsertExchangeDueToMissingAssignment() throws Exception {
         final User user = this.userService.save(new User(null, null,
-                                "shouldFailInsertExchangeDueToMissingAssignment@ExchangeController.test", UserRoles.STUDENT));
+                "shouldFailInsertExchangeDueToMissingAssignment@ExchangeController.test", UserRoles.STUDENT));
         final String token = this.userService.login(user).getToken();
         final Groups group = this.groupService.save(new Groups(212, "A2-1", null, 420, WeekDay.WEDNESDAY, null));
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " +
-        token).contentType(APPLICATION_JSON_UTF8).content("{\"group\": "+ group.getId() +" }")).andExpect(status().isBadRequest());
+        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token)
+                .contentType(APPLICATION_JSON_UTF8).content("{\"group\": " + group.getId() + " }"))
+                .andExpect(status().isBadRequest());
     }
 
     @Test
-    public void shouldFailInsertExchangeDueToMissingParam() throws Exception{
+    public void shouldFailInsertExchangeDueToMissingParam() throws Exception {
         final User user = this.userService.save(new User(null, null,
-                                "shouldFailInsertExchangeDueToMissingParam@ExchangeController.test", UserRoles.STUDENT));
+                "shouldFailInsertExchangeDueToMissingParam@ExchangeController.test", UserRoles.STUDENT));
         final String token = this.userService.login(user).getToken();
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " +
-        token).contentType(APPLICATION_JSON_UTF8)).andExpect(status().isBadRequest());
+        mockMvc.perform(
+                post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token).contentType(APPLICATION_JSON_UTF8))
+                .andExpect(status().isBadRequest());
     }
 
     @Test
     @DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
-    public void shouldDenyExchangeDueToAssigmentOverlapping() throws Exception{
-        final User user = this.userService.save(new User(null, null,
-        "shouldDenyExchangeDueToAssigmentOverlapping@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
+    public void shouldDenyExchangeDueToAssigmentOverlapping() throws Exception {
+        final User user = this.userService
+                .save(new User(null, null, "shouldDenyExchangeDueToAssigmentOverlapping@ExchangeController.test",
+                        "11111", UserRoles.STUDENT, 320));
         final String token = this.userService.login(user).getToken();
         final Groups group = this.groupService.save(new Groups(215, "A2-2", null, 520, WeekDay.TUESDAY, null));
         final Commision commision = this.commisionService.save(new Commision(user));
@@ -198,30 +211,34 @@ public class ExchangeControllerTest extends AbstractControllerTest {
         this.exchangeService.save(new Exchange(assignment, group));
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " +
-        token).contentType(APPLICATION_JSON_UTF8).content("{\"assignment\": "+ user.getId() +", \"group\": "+ group.getId() +" }")).andExpect(status().isBadRequest());
+        mockMvc.perform(
+                post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token).contentType(APPLICATION_JSON_UTF8)
+                        .content("{\"assignment\": " + user.getId() + ", \"group\": " + group.getId() + " }"))
+                .andExpect(status().isBadRequest());
     }
 
     @Test
-    public void shouldDenyPostDueToAssignmentNotAccepted() throws Exception{
+    public void shouldDenyPostDueToAssignmentNotAccepted() throws Exception {
         final User user = this.userService.save(new User(null, null,
-                                "shouldDenyPostDueToAssignmentNotAccepted@ExchangeController.test", UserRoles.STUDENT));
+                "shouldDenyPostDueToAssignmentNotAccepted@ExchangeController.test", UserRoles.STUDENT));
         final String token = this.userService.login(user).getToken();
         final Groups group = this.groupService.save(new Groups(212, "A2-1", null, 420, WeekDay.WEDNESDAY, null));
         final Groups group2 = this.groupService.save(new Groups(213, "A2-2", null, 420, WeekDay.MONDAY, null));
-        final Commision commision =  this.commisionService.save(new Commision(user));
-        final Assignment assignment = this.assignmentService.save(new Assignment(group,commision));
+        final Commision commision = this.commisionService.save(new Commision(user));
+        final Assignment assignment = this.assignmentService.save(new Assignment(group, commision));
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " +
-        token).contentType(APPLICATION_JSON_UTF8).content("{\"assignment\": "+ assignment.getId() +", \"group\": "+ group2.getId() +" }")).andExpect(status().isBadRequest());
+        mockMvc.perform(
+                post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token).contentType(APPLICATION_JSON_UTF8)
+                        .content("{\"assignment\": " + assignment.getId() + ", \"group\": " + group2.getId() + " }"))
+                .andExpect(status().isBadRequest());
     }
 
     @Test
     @DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
-    public void shouldDeleteExchange() throws Exception{
-        final User user = this.userService.save(new User(null, null,
-                                "shouldDeleteExchange@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
+    public void shouldDeleteExchange() throws Exception {
+        final User user = this.userService.save(
+                new User(null, null, "shouldDeleteExchange@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
         final String token = this.userService.login(user).getToken();
         final Groups group = this.groupService.save(new Groups(215, "A2-2", null, 520, WeekDay.TUESDAY, null));
         final Groups groupDesired = this.groupService.save(new Groups(216, "A2-3", null, 530, WeekDay.MONDAY, null));
@@ -230,14 +247,14 @@ public class ExchangeControllerTest extends AbstractControllerTest {
         final Exchange exchange = this.exchangeService.save(new Exchange(assignment, groupDesired));
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(delete(EXCHANGE_ENDPOINT + "/" + exchange.getId()).header("Authorization", "Bearer " +
-        token)).andExpect(status().isOk());
+        mockMvc.perform(delete(EXCHANGE_ENDPOINT + "/" + exchange.getId()).header("Authorization", "Bearer " + token))
+                .andExpect(status().isOk());
     }
 
     @Test
-    public void shouldFailDeleteDueToWrongPermissions() throws Exception{
+    public void shouldFailDeleteDueToWrongPermissions() throws Exception {
         final User user = this.userService.save(new User(null, null,
-                                "shouldFailDeleteDueToWrongPermissions@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
+                "shouldFailDeleteDueToWrongPermissions@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
         final Groups group = this.groupService.save(new Groups(215, "A2-2", null, 520, WeekDay.TUESDAY, null));
         final Groups groupDesired = this.groupService.save(new Groups(216, "A2-3", null, 530, WeekDay.MONDAY, null));
         final Commision commision = this.commisionService.save(new Commision(user));
@@ -245,39 +262,41 @@ public class ExchangeControllerTest extends AbstractControllerTest {
         final Exchange exchange = this.exchangeService.save(new Exchange(assignment, groupDesired));
 
         final User user2 = this.userService.save(new User(null, null,
-        "shouldFailDeleteDueToWrongPermissions@ExchangeController2.test", "11112", UserRoles.STUDENT, 322));
+                "shouldFailDeleteDueToWrongPermissions@ExchangeController2.test", "11112", UserRoles.STUDENT, 322));
         final String token2 = this.userService.login(user2).getToken();
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(get(EXCHANGE_ENDPOINT + "/" + exchange.getId()).header("Authorization", "Bearer " +
-        token2)).andExpect(status().isBadRequest());
+        mockMvc.perform(get(EXCHANGE_ENDPOINT + "/" + exchange.getId()).header("Authorization", "Bearer " + token2))
+                .andExpect(status().isBadRequest());
     }
 
     @Test
-    public void shouldFailDeleteDueToMissingParam() throws Exception{
-        final User user = this.userService.save(new User(null, null,
-        "shouldFailDeleteDueToMissingParam@ExchangeController.test", UserRoles.STUDENT));
+    public void shouldFailDeleteDueToMissingParam() throws Exception {
+        final User user = this.userService.save(
+                new User(null, null, "shouldFailDeleteDueToMissingParam@ExchangeController.test", UserRoles.STUDENT));
         final String token = this.userService.login(user).getToken();
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(delete(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token)).andExpect(status().is4xxClientError());
+        mockMvc.perform(delete(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token))
+                .andExpect(status().is4xxClientError());
     }
 
     @Test
-    public void shouldFailDeleteDueToExchangeNotFound() throws Exception{
+    public void shouldFailDeleteDueToExchangeNotFound() throws Exception {
         final User user = this.userService.save(new User(null, null,
-                                "shouldFailDeleteDueToExchangeNotFound@ExchangeController.test", UserRoles.STUDENT));
+                "shouldFailDeleteDueToExchangeNotFound@ExchangeController.test", UserRoles.STUDENT));
         final String token = this.userService.login(user).getToken();
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(delete(EXCHANGE_ENDPOINT + "/" + user.getId()).header("Authorization", "Bearer " +
-        token)).andExpect(status().isBadRequest());
+        mockMvc.perform(delete(EXCHANGE_ENDPOINT + "/" + user.getId()).header("Authorization", "Bearer " + token))
+                .andExpect(status().isBadRequest());
     }
 
     @Test
     @DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
-    public void shouldFailPostDueToGroupAlreadyAccepted() throws Exception{
-        final User user = this.userService.save(new User(null, null, "shouldFailPostDueToGroupAlreadyAccepted@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
+    public void shouldFailPostDueToGroupAlreadyAccepted() throws Exception {
+        final User user = this.userService.save(new User(null, null,
+                "shouldFailPostDueToGroupAlreadyAccepted@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
         final String token = this.userService.login(user).getToken();
         final Groups group = this.groupService.save(new Groups(215, "A2-2", null, 520, WeekDay.TUESDAY, null));
         final Groups group2 = this.groupService.save(new Groups(216, "A2-3", null, 530, WeekDay.MONDAY, null));
@@ -288,7 +307,55 @@ public class ExchangeControllerTest extends AbstractControllerTest {
         this.exchangeService.save(new Exchange(assignment, group2));
 
         MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
-        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " +
-        token).contentType(APPLICATION_JSON_UTF8).content("{\"assignment\": "+ assignment.getId() +", \"group\": "+ group2.getId() +" }")).andExpect(status().isBadRequest());
+        mockMvc.perform(
+                post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token).contentType(APPLICATION_JSON_UTF8)
+                        .content("{\"assignment\": " + assignment.getId() + ", \"group\": " + group2.getId() + " }"))
+                .andExpect(status().isBadRequest());
+    }
+
+    @Test
+    @DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
+    public void shouldFailForDiffrentCoursesExchange() throws Exception {
+        final User user = this.userService.save(
+                new User(null, null, "shouldInsertExchange@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
+        final String token = this.userService.login(user).getToken();
+        final Course course = this.courseService
+                .save(new Course("shouldFailForDiffrentCoursesExchangeCourse", "SFFDCEC"));
+        final Course course2 = this.courseService
+                .save(new Course("shouldFailForDiffrentCoursesExchangeCourse2", "SFFDCEC-2"));
+        final Groups group = this.groupService.save(new Groups(215, "A2-2", course, 520, WeekDay.TUESDAY, null));
+        final Groups groupDesired = this.groupService.save(new Groups(216, "A2-3", course2, 530, WeekDay.MONDAY, null));
+        final Commision commision = this.commisionService.save(new Commision(user));
+        final Assignment assignment = this.assignmentService.save(new Assignment(group, commision));
+
+        this.assignmentService.callAcceptAlgorythm();
+
+        MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
+        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token)
+                .contentType(APPLICATION_JSON_UTF8)
+                .content("{\"assignment\": " + assignment.getId() + ", \"group\": " + groupDesired.getId() + " }"))
+                .andExpect(status().isBadRequest());
+    }
+
+    @Test
+    @DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
+    public void shouldFailForDiffrentGroupTypesExchange() throws Exception {
+        final User user = this.userService.save(
+                new User(null, null, "shouldInsertExchange@ExchangeController.test", "11111", UserRoles.STUDENT, 320));
+        final String token = this.userService.login(user).getToken();
+        final Course course = this.courseService
+                .save(new Course("shouldFailForDiffrentCoursesExchangeCourse", "SFFDCEC"));
+        final Groups group = this.groupService.save(new Groups(12, "A2-2", course, 520, WeekDay.TUESDAY, null));
+        final Groups groupDesired = this.groupService.save(new Groups(216, "A2-3", course, 530, WeekDay.MONDAY, null));
+        final Commision commision = this.commisionService.save(new Commision(user));
+        final Assignment assignment = this.assignmentService.save(new Assignment(group, commision));
+
+        this.assignmentService.callAcceptAlgorythm();
+
+        MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).apply(springSecurity()).build();
+        mockMvc.perform(post(EXCHANGE_ENDPOINT).header("Authorization", "Bearer " + token)
+                .contentType(APPLICATION_JSON_UTF8)
+                .content("{\"assignment\": " + assignment.getId() + ", \"group\": " + groupDesired.getId() + " }"))
+                .andExpect(status().isBadRequest());
     }
 }