relate training program and user

backend/demo-group7/src/main/java/com/group7/demo/models/Exercise.java

@@ -12,6 +12,9 @@
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import java.util.ArrayList;
+import java.util.List;
+
 @Data
 @Builder
 @NoArgsConstructor
@@ -23,6 +26,7 @@ public class Exercise {
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
+    @Column(unique = true)
     private String name;  // Name of the exercise
 
     @Enumerated(EnumType.STRING)
@@ -31,7 +35,6 @@ public class Exercise {
     @OneToOne(mappedBy = "exercise", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
     private ExerciseDetail exerciseDetail;  // Link to the sets and repetitions
 
-    @ManyToOne(fetch = FetchType.LAZY)
-    @JoinColumn(name = "training_program_id")
-    private TrainingProgram trainingProgram;
+    @ManyToMany(mappedBy = "exercises", fetch = FetchType.LAZY)
+    private List<TrainingProgram> trainingPrograms = new ArrayList<>();
 }

backend/demo-group7/src/main/java/com/group7/demo/models/TrainingProgram.java

@@ -29,12 +29,16 @@ public class TrainingProgram {
     @Enumerated(EnumType.STRING)
     private LocationType locationType; // HOME, GYM, OUTDOOR
 
-    @OneToMany(mappedBy = "trainingProgram", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
-    private List<Exercise> exercises;  // Exercises linked to the training program
+    @ManyToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
+    @JoinTable(
+            name = "training_program_exercise",  // Name of the join table
+            joinColumns = @JoinColumn(name = "training_program_id"),  // Foreign key to TrainingProgram
+            inverseJoinColumns = @JoinColumn(name = "exercise_id")    // Foreign key to Exercise
+    )    private List<Exercise> exercises;  // Exercises linked to the training program
 
     @ManyToOne(fetch = FetchType.LAZY)
-    @JoinColumn(name = "trainer_id", nullable = false)
-    private User trainer;  // The trainer who created the program
+    @JoinColumn(name = "user_id", nullable = false)
+    private User trainer;
 
     private String description;  // Optional description of the program
 }

backend/demo-group7/src/main/java/com/group7/demo/models/User.java

@@ -6,6 +6,7 @@
 import org.hibernate.annotations.UpdateTimestamp;
 import java.util.Date;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Set;
 
 @Getter
@@ -60,4 +61,8 @@ public class User {
 
     @OneToMany(mappedBy = "user", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
     private Set<Post> posts = new HashSet<>();
+
+    @OneToMany(mappedBy = "trainer", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
+    private List<TrainingProgram> trainingPrograms;
+
 }

backend/demo-group7/src/main/java/com/group7/demo/repository/ExerciseRepository.java

@@ -0,0 +1,11 @@
+package com.group7.demo.repository;
+
+import com.group7.demo.models.Exercise;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface ExerciseRepository extends JpaRepository<Exercise, Long> {
+    Optional<Exercise> findByName(String name);
+
+}

backend/demo-group7/src/main/java/com/group7/demo/services/TrainingProgramService.java

@@ -8,6 +8,7 @@
 import com.group7.demo.models.ExerciseDetail;
 import com.group7.demo.models.TrainingProgram;
 import com.group7.demo.models.User;
+import com.group7.demo.repository.ExerciseRepository;
 import com.group7.demo.repository.TrainingProgramRepository;
 import com.group7.demo.repository.UserRepository;
 import jakarta.persistence.EntityNotFoundException;
@@ -16,6 +17,7 @@
 import org.springframework.stereotype.Service;
 
 import java.util.List;
+import java.util.Optional;
 import java.util.stream.Collectors;
 
 @Service
@@ -26,6 +28,7 @@ public class TrainingProgramService {
 
     private final UserRepository userRepository;
 
+    private final ExerciseRepository exerciseRepository;
     @Transactional
     public TrainingProgramResponse createTrainingProgram(TrainingProgramRequest request) {
         // Find the trainer by ID (you should have a Trainer/User repository)
@@ -44,20 +47,22 @@ public TrainingProgramResponse createTrainingProgram(TrainingProgramRequest requ
         // Map exercises from request to entity
         List<Exercise> exercises = request.getExercises().stream()
                 .map(exerciseRequest -> {
+                    // Create exercise
                     Exercise exercise = Exercise.builder()
                             .name(exerciseRequest.getName())
                             .muscleGroup(exerciseRequest.getMuscleGroup())
-                            .trainingProgram(trainingProgram)
                             .build();
 
-                    // Create exercise detail
+                    // Create exercise detail (assuming `ExerciseRequest` has `getSets()` and `getRepetitions()` methods)
                     ExerciseDetail exerciseDetail = ExerciseDetail.builder()
-                            .sets(exerciseRequest.getSets())
-                            .repetitions(exerciseRequest.getRepetitions())
+                            .sets(exerciseRequest.getSets())  // Make sure this retrieves the sets from the request
+                            .repetitions(exerciseRequest.getRepetitions())  // Retrieves repetitions from the request
                             .exercise(exercise)
                             .build();
 
+                    // Link the exercise with its exercise detail
                     exercise.setExerciseDetail(exerciseDetail);
+
                     return exercise;
                 })
                 .collect(Collectors.toList());