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

package com.plannaplan.controllers;

import java.util.ArrayList;
import java.util.Dictionary;
import java.util.Hashtable;
import java.util.List;

import com.plannaplan.entities.Course;
import com.plannaplan.entities.Groups;
import com.plannaplan.services.CourseService;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.GetMapping;

@RestController
@CrossOrigin
public class CoursesController {
    @Autowired
    private CourseService courseService;

    @GetMapping("/getCourses")
    public ResponseEntity<List<Dictionary<String,Object>>> getMethodName() {
        List<Course> courses = this.courseService.getAllCourses();
        List<Dictionary<String,Object>> response = new ArrayList<>();
        for(Course c : courses){
            Dictionary<String, Object> element = new Hashtable<>();
            element.put("id", c.getId());
            element.put("name",c.getName());
            response.add(element);
        }
        
        return new ResponseEntity<>(response, HttpStatus.OK);
    }

    @GetMapping("/getCoursesWithGroups")
    public ResponseEntity<List<Dictionary<String,Object>>> getCoursesWithGroups() {
        List<Course> courses = this.courseService.getAllCourses();
        List<Dictionary<String,Object>> response = new ArrayList<>();
        for(Course c : courses){
            Dictionary<String, Object> element = new Hashtable<>();
            element.put("id", c.getId());
            element.put("name",c.getName());
            List<Dictionary<String,Object>> groups = new ArrayList<>();
            for(Groups g : c.getGroups()){
                Dictionary<String,Object> group = new Hashtable<>();
                group.put("id", g.getId());
                group.put("day", g.getDay().label);
                group.put("time", g.getTimeString());
                group.put("lecturer", g.getLecturer().toString());
                group.put("room", g.getRoom());
                group.put("type", g.getType());
                groups.add(group);
            }
            
            element.put("groups", groups);
            response.add(element);
        }
        
        return new ResponseEntity<>(response, HttpStatus.OK);
    }

}