Checkpoint: return all exchanges works

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

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

@@ -1,5 +1,6 @@
 package com.plannaplan.controllers;
 
+import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 
@@ -9,6 +10,8 @@ import com.plannaplan.entities.Exchange;
 import com.plannaplan.entities.Groups;
 import com.plannaplan.entities.User;
 import com.plannaplan.exceptions.UserNotFoundException;
+import com.plannaplan.responses.mappers.ExchangeResponseMappers;
+import com.plannaplan.responses.models.ExchangeResponse;
 import com.plannaplan.services.AssignmentService;
 import com.plannaplan.services.ExchangeService;
 import com.plannaplan.services.GroupService;
@@ -19,6 +22,7 @@ import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.CrossOrigin;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -104,4 +108,18 @@ public class ExchangeController extends TokenBasedController{
         this.exchangeService.deleteExchange(exchangeToDelete);
         return new ResponseEntity<>("Success", HttpStatus.OK);
     }
+
+    @GetMapping("/exchange/all")
+    @ApiOperation(value = "Get exchange offers")
+    public ResponseEntity<List<ExchangeResponse>> getExchange()
+            throws UserNotFoundException {
+
+        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);
+        
+        return new ResponseEntity<>(listOfResponses, HttpStatus.OK);
+    }
 }

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

@@ -0,0 +1,14 @@
+package com.plannaplan.responses.mappers;
+
+import java.util.List;
+import java.util.Objects;
+import java.util.stream.Collectors;
+
+import com.plannaplan.entities.Exchange;
+import com.plannaplan.responses.models.ExchangeResponse;
+
+public class ExchangeResponseMappers {
+    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/models/ExchangeResponse.java

@@ -0,0 +1,36 @@
+package com.plannaplan.responses.models;
+
+import com.plannaplan.entities.Exchange;
+
+public class ExchangeResponse {
+    private Long id;
+    private GroupDefaultResponse ownedAssignment;
+    private GroupDefaultResponse desiredGroup;
+
+    public ExchangeResponse(Exchange exchange){
+        this.id = exchange.getId();
+        this.ownedAssignment = new GroupDefaultResponse(exchange.getOwnedAssignment().getGroup());
+        this.desiredGroup = new GroupDefaultResponse(exchange.getDesiredAssignment());
+    }
+
+	public GroupDefaultResponse getDesiredGroup() {
+		return desiredGroup;
+	}
+	public void setDesiredGroup(GroupDefaultResponse desiredGroup) {
+		this.desiredGroup = desiredGroup;
+	}
+	public GroupDefaultResponse getOwnedAssignment() {
+		return ownedAssignment;
+	}
+	public void setOwnedAssignment(GroupDefaultResponse ownedAssignment) {
+		this.ownedAssignment = ownedAssignment;
+	}
+	public Long getId() {
+		return id;
+	}
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+    
+}