Добавил возможность создавать, просматривать и удалять данные дисциплин и кафедр.

backend/src/main/java/com/magistr/app/controller/DepartmentController.java

@@ -0,0 +1,106 @@
+package com.magistr.app.controller;
+
+import com.magistr.app.dto.CreateDepartmentRequest;
+import com.magistr.app.dto.DepartmentResponse;
+import com.magistr.app.model.Department;
+import com.magistr.app.repository.DepartmentRepository;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api/departments")
+public class DepartmentController {
+
+    private static final Logger logger = LoggerFactory.getLogger(DepartmentController.class);
+
+    private final DepartmentRepository departmentRepository;
+
+    public DepartmentController(DepartmentRepository departmentRepository) {
+        this.departmentRepository = departmentRepository;
+    }
+
+    @GetMapping
+    public List<Department> getAllDepartments() {
+        logger.info("Получен запрос на получение списка кафедр");
+        try {
+            List<Department> departments = departmentRepository.findAll();
+            List<Department> response = departments.stream()
+                .map( d -> new Department(
+                    d.getId(),
+                    d.getDepartmentName(),
+                    d.getDepartmentCode()
+                ))
+                .toList();
+            logger.info("Получено {} кафедр", response.size());
+            return response;
+        } catch (Exception e) {
+            logger.error("Ошибка при получении списка кафедр: {}", e.getMessage(), e);
+            throw e;
+        }
+    }
+
+    @PostMapping
+    public ResponseEntity<?> createDepartment(@RequestBody CreateDepartmentRequest request) {
+        logger.info("Получен запрос на создание кафедры: name = {}, code = {}", request.getDepartmentName(), request.getDepartmentCode());
+
+        try {
+            if (request.getDepartmentName() == null || request.getDepartmentName().isBlank()){
+                String errorMessage = "Название кафедры обязательно";
+                logger.error("Ошибка валидации: {}", errorMessage);
+                return ResponseEntity.badRequest().body(Map.of("message", errorMessage));
+            }
+            if (departmentRepository.findByDepartmentName(request.getDepartmentName().trim()).isPresent()) {
+                String errorMessage = "Кафедра с таким названием уже существует";
+                logger.error("Ошибка валидации: {}", errorMessage);
+                return ResponseEntity.badRequest().body(Map.of("message", errorMessage));
+            }
+            if (request.getDepartmentCode() == null || request.getDepartmentCode() == 0) {
+                String errorMessage = "Код кафедры обязателен";
+                logger.error("Ошибка валидации: {}", errorMessage);
+                return ResponseEntity.badRequest().body(Map.of("message", errorMessage));
+            }
+            if (departmentRepository.findByDepartmentCode(request.getDepartmentCode()).isPresent()) {
+                String errorMessage = "Кафедра с таким кодом уже существует";
+                logger.error("Ошибка валидации: {}", errorMessage);
+                return ResponseEntity.badRequest().body(Map.of("message", errorMessage));
+            }
+
+            Department department = new Department();
+            department.setDepartmentName(request.getDepartmentName());
+            department.setDepartmentCode(request.getDepartmentCode());
+            departmentRepository.save(department);
+
+            logger.info("Кафедра успешно создана с ID: {}", department.getId());
+
+            return ResponseEntity.ok(
+                    new DepartmentResponse(
+                            department.getId(),
+                            department.getDepartmentName(),
+                            department.getDepartmentCode()
+                    )
+            );
+        } catch (Exception e) {
+            logger.error("Ошибка при создании кафедры: {}", e.getMessage(), e);
+            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
+                    .body(Map.of("message", "Произошла ошибка при создании кафедры " + e.getMessage()));
+        }
+    }
+
+    @DeleteMapping("/id")
+    public ResponseEntity<?> deleteDepartment(@PathVariable Long id) {
+        logger.info("Получен запрос на удаление кафедры с ID: {}", id);
+        if (!departmentRepository.existsById(id)) {
+            logger.info("Кафедра с ID - {} не найдена", id);
+            return ResponseEntity.notFound().build();
+        }
+        departmentRepository.deleteById(id);
+        logger.info("Кафедра с ID - {} успешно удалена", id);
+        return ResponseEntity.ok(Map.of("message", "Кафедра удалена"));
+    }
+}

backend/src/main/java/com/magistr/app/controller/SpecialityController.java

@@ -0,0 +1,106 @@
+package com.magistr.app.controller;
+
+import com.magistr.app.dto.CreateSpecialityRequest;
+import com.magistr.app.dto.SpecialityResponse;
+import com.magistr.app.model.Speciality;
+import com.magistr.app.repository.SpecialtiesRepository;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api/specialties")
+public class SpecialityController {
+
+    private static final Logger logger = LoggerFactory.getLogger(SpecialityController.class);
+
+    private final SpecialtiesRepository specialtiesRepository;
+
+    public SpecialityController(SpecialtiesRepository specialtiesRepository) {
+        this.specialtiesRepository = specialtiesRepository;
+    }
+
+    @GetMapping
+    public List<Speciality> getAllSpecialties() {
+        logger.info("Получен запрос на получение списка специальностей");
+        try {
+            List<Speciality> specialities = specialtiesRepository.findAll();
+            List<Speciality> response = specialities.stream()
+                    .map( s -> new Speciality(
+                            s.getId(),
+                            s.getSpecialityName(),
+                            s.getSpecialityCode()
+                    ))
+                    .toList();
+            logger.info("Получено {} специальностей", response.size());
+            return response;
+        } catch (Exception e) {
+            logger.error("Ошибка при получении списка специальностей: {}", e.getMessage(), e);
+            throw e;
+        }
+    }
+
+    @PostMapping
+    public ResponseEntity<?> createSpeciality(@RequestBody CreateSpecialityRequest request) {
+        logger.info("Получен запрос на создание специальности: name = {}, code = {}", request.getSpecialityName(), request.getSpecialityCode());
+
+        try {
+            if (request.getSpecialityName() == null || request.getSpecialityName().isBlank()) {
+                String errorMessage = "Название специальности обязательно";
+                logger.error("Ошибка валидации: {}", errorMessage);
+                return ResponseEntity.badRequest().body(Map.of("message", errorMessage));
+            }
+            if (specialtiesRepository.findBySpecialityName(request.getSpecialityName().trim()).isPresent()) {
+                String errorMessage = "Специальность с таким названием уже существует";
+                logger.error("Ошибка валидации: {}", errorMessage);
+                return ResponseEntity.badRequest().body(Map.of("message", errorMessage));
+            }
+            if (request.getSpecialityCode() == null || request.getSpecialityCode().isBlank()) {
+                String errorMessage = "Код специальности обязателен";
+                logger.error("Ошибка валидации: {}", errorMessage);
+                return ResponseEntity.badRequest().body(Map.of("message", errorMessage));
+            }
+            if (specialtiesRepository.findBySpecialityCode(request.getSpecialityCode().trim()).isPresent()) {
+                String errorMessage = "Специальность с таким кодом уже существует";
+                logger.error("Ошибка валидации: {}", errorMessage);
+                return ResponseEntity.badRequest().body(Map.of("message", errorMessage));
+            }
+
+            Speciality speciality = new Speciality();
+            speciality.setSpecialityName(request.getSpecialityName());
+            speciality.setSpecialityCode(request.getSpecialityCode());
+            specialtiesRepository.save(speciality);
+
+            logger.info("Специальность успешно создана с ID: {}", speciality.getId());
+
+            return ResponseEntity.ok(
+                    new SpecialityResponse(
+                            speciality.getId(),
+                            speciality.getSpecialityName(),
+                            speciality.getSpecialityCode()
+                    )
+            );
+        } catch (Exception e) {
+            logger.error("Ошибка при создании специальности: {}", e.getMessage(), e);
+            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
+                    .body(Map.of("message", "Произошла ошибка при создании специальности " + e.getMessage()));
+        }
+    }
+
+    @DeleteMapping("/id")
+    public ResponseEntity<?> deleteSpeciality(@PathVariable Long id) {
+        logger.info("Получен запрос на удаление специальности с ID: {}", id);
+        if (!specialtiesRepository.existsById(id)) {
+            logger.info("Специальность с ID - {} не найдена", id);
+            return ResponseEntity.notFound().build();
+        }
+        specialtiesRepository.deleteById(id);
+        logger.info("Специальность с ID - {} успешно удалена", id);
+        return ResponseEntity.ok(Map.of("message", "Специальнсть удалена"));
+    }
+}

backend/src/main/java/com/magistr/app/dto/CreateDepartmentRequest.java

@@ -0,0 +1,25 @@
+package com.magistr.app.dto;
+
+public class CreateDepartmentRequest {
+
+    private String departmentName;
+    private Long departmentCode;
+
+    public CreateDepartmentRequest() {}
+
+    public String getDepartmentName() {
+        return departmentName;
+    }
+
+    public void setDepartmentName(String departmentName) {
+        this.departmentName = departmentName;
+    }
+
+    public Long getDepartmentCode() {
+        return departmentCode;
+    }
+
+    public void setDepartmentCode(Long departmentCode) {
+        this.departmentCode = departmentCode;
+    }
+}

backend/src/main/java/com/magistr/app/dto/CreateSpecialityRequest.java

@@ -0,0 +1,25 @@
+package com.magistr.app.dto;
+
+public class CreateSpecialityRequest {
+
+    private String specialityName;
+    private String specialityCode;
+
+    public CreateSpecialityRequest() {}
+
+    public String getSpecialityName() {
+        return specialityName;
+    }
+
+    public void setSpecialityName(String specialityName) {
+        this.specialityName = specialityName;
+    }
+
+    public String getSpecialityCode() {
+        return specialityCode;
+    }
+
+    public void setSpecialityCode(String specialityCode) {
+        this.specialityCode = specialityCode;
+    }
+}

backend/src/main/java/com/magistr/app/dto/DepartmentResponse.java

@@ -0,0 +1,38 @@
+package com.magistr.app.dto;
+
+public class DepartmentResponse {
+
+    private Long id;
+    private String departmentName;
+    private Long departmentCode;
+
+    public DepartmentResponse(Long id, String departmentName, Long departmentCode) {
+        this.id = id;
+        this.departmentName = departmentName;
+        this.departmentCode = departmentCode;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getDepartmentName() {
+        return departmentName;
+    }
+
+    public void setDepartmentName(String departmentName) {
+        this.departmentName = departmentName;
+    }
+
+    public Long getDepartmentCode() {
+        return departmentCode;
+    }
+
+    public void setDepartmentCode(Long departmentCode) {
+        this.departmentCode = departmentCode;
+    }
+}

backend/src/main/java/com/magistr/app/dto/SpecialityResponse.java

@@ -0,0 +1,38 @@
+package com.magistr.app.dto;
+
+public class SpecialityResponse {
+
+    private Long id;
+    private String specialityName;
+    private String specialityCode;
+
+    public SpecialityResponse(Long id, String specialityName, String specialityCode) {
+        this.id = id;
+        this.specialityName = specialityName;
+        this.specialityCode = specialityCode;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getSpecialityName() {
+        return specialityName;
+    }
+
+    public void setSpecialityName(String specialityName) {
+        this.specialityName = specialityName;
+    }
+
+    public String getSpecialityCode() {
+        return specialityCode;
+    }
+
+    public void setSpecialityCode(String specialityCode) {
+        this.specialityCode = specialityCode;
+    }
+}

backend/src/main/java/com/magistr/app/model/Department.java

@@ -0,0 +1,50 @@
+package com.magistr.app.model;
+
+import jakarta.persistence.*;
+
+@Entity
+@Table(name="departments")
+public class Department {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "name", nullable = false)
+    private String departmentName;
+
+    @Column(name = "code", nullable = false)
+    private Long departmentCode;
+
+    public Department() {}
+
+    public Department(Long id, String departmentName, Long departmentCode) {
+        this.id = id;
+        this.departmentName = departmentName;
+        this.departmentCode = departmentCode;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getDepartmentName() {
+        return departmentName;
+    }
+
+    public void setDepartmentName(String departmentName) {
+        this.departmentName = departmentName;
+    }
+
+    public Long getDepartmentCode() {
+        return departmentCode;
+    }
+
+    public void setDepartmentCode(Long departmentCode) {
+        this.departmentCode = departmentCode;
+    }
+}

backend/src/main/java/com/magistr/app/model/Speciality.java

@@ -0,0 +1,50 @@
+package com.magistr.app.model;
+
+import jakarta.persistence.*;
+
+@Entity
+@Table(name="specialties")
+public class Speciality {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name="name", nullable = false)
+    private String specialityName;
+
+    @Column(name="specialty_code",nullable = false)
+    private String specialityCode;
+
+    public Speciality() {}
+
+    public Speciality(Long id, String specialityName, String specialityCode) {
+        this.id = id;
+        this.specialityName = specialityName;
+        this.specialityCode = specialityCode;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getSpecialityName() {
+        return specialityName;
+    }
+
+    public void setSpecialityName(String specialityName) {
+        this.specialityName = specialityName;
+    }
+
+    public String getSpecialityCode() {
+        return specialityCode;
+    }
+
+    public void setSpecialityCode(String specialityCode) {
+        this.specialityCode = specialityCode;
+    }
+}

backend/src/main/java/com/magistr/app/repository/DepartmentRepository.java

@@ -0,0 +1,13 @@
+package com.magistr.app.repository;
+
+import com.magistr.app.model.Department;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface DepartmentRepository extends JpaRepository<Department, Long> {
+
+    Optional<Department> findByDepartmentName(String departmentName);
+
+    Optional<Department> findByDepartmentCode(Long departmentCode);
+}

backend/src/main/java/com/magistr/app/repository/SpecialtiesRepository.java

@@ -0,0 +1,13 @@
+package com.magistr.app.repository;
+
+import com.magistr.app.model.Speciality;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface SpecialtiesRepository extends JpaRepository<Speciality, Long> {
+
+    Optional<Speciality> findBySpecialityName(String specialityName);
+
+    Optional<Speciality> findBySpecialityCode(String specialityCode);
+}