src/main/java/org/example/manager/LessonManager.java - dev - dmuruz/Course_Service

src/main/java/org/example/manager/LessonManager.java
73 строки3 KB
Danil Muruz
MVP
24 апр 2025, 09:39
24 апр 2025, 09:3916b1c45
package org.example.manager;

import org.example.dao.CourseRepository;
import org.example.dao.LessonRepository;
import org.example.dto.LessonDTO;
import org.example.model.Course;
import org.example.model.Lesson;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Optional;

@Service
public class LessonManager {

    @Autowired
    private LessonRepository lessonRepository;

    @Autowired
    private CourseRepository courseRepository;

    public Lesson createLesson(LessonDTO lessonDTO) {
        Lesson lesson = new Lesson();
        lesson.setName(lessonDTO.getName());
        lesson.setDescription(lessonDTO.getDescription());
        lesson.setJsonSchema(lessonDTO.getJsonSchema());
        lesson.setDurationSteps(lessonDTO.getDurationSteps());
        lesson.setOrderNum(lessonDTO.getOrderNum());

        Optional<Course> courseOpt = courseRepository.findById(lessonDTO.getCourseId());
        if (courseOpt.isPresent()) {
            lesson.setCourse(courseOpt.get());
        } else {
            throw new RuntimeException("Курс не найден с id: " + lessonDTO.getCourseId());
        }
        return lessonRepository.save(lesson);
    }

    public List<Lesson> getAllLessons() {
        return lessonRepository.findAll();
    }

    public Optional<Lesson> getLessonById(Long id) {
        return lessonRepository.findById(id);
    }

    public Lesson updateLesson(Long id, LessonDTO lessonDTO) {
        Optional<Lesson> optLesson = lessonRepository.findById(id);
        if (optLesson.isPresent()) {
            Lesson lesson = optLesson.get();
            lesson.setName(lessonDTO.getName());
            lesson.setDescription(lessonDTO.getDescription());
            lesson.setJsonSchema(lessonDTO.getJsonSchema());
            lesson.setDurationSteps(lessonDTO.getDurationSteps());
            lesson.setOrderNum(lessonDTO.getOrderNum());
            return lessonRepository.save(lesson);
        }
        throw new RuntimeException("Урок не найден с id: " + id);
    }

    public void deleteLesson(Long id) {
        lessonRepository.deleteById(id);
    }

    public Lesson getFirstLesson(Long courseId) {
        Optional<Course> courseOpt = courseRepository.findById(courseId);
        if (courseOpt.isPresent()) {
            return lessonRepository.findFirstByCourseOrderByOrderNumAsc(courseOpt.get());
        }
        throw new RuntimeException("Курс не найден с id: " + courseId);
    }
}