import { Entity, Column, PrimaryGeneratedColumn, ManyToOne, OneToMany } from 'typeorm';
import { Course } from '../course/course.entity';
import { Step } from '../steps/step.entity';

@Entity()
export class Lesson {
  @PrimaryGeneratedColumn()
  id: number;

  @Column()
  title: string;

  @Column({ type: 'text', nullable: true })
  description: string;

  @ManyToOne(() => Course, (course) => course.lessons, { onDelete: 'CASCADE' })
  course: Course;

  @OneToMany(() => Step, (step) => step.lesson, { cascade: true })
  steps: Step[];
}