import {
  Entity,
  PrimaryGeneratedColumn,
  Column,
  CreateDateColumn,
  UpdateDateColumn,
  ManyToOne,
  JoinColumn,
  Index,
} from 'typeorm';
import { Student } from './student.entity';
import { Class } from './class.entity';

@Entity('attendance_records')
@Index(['classId', 'attendanceDate'])
@Index(['studentId', 'attendanceDate'])
export class AttendanceRecord {
  @PrimaryGeneratedColumn()
  id: number;

  @Column({ name: 'student_id', type: 'integer' })
  studentId: number;

  @ManyToOne(() => Student, { onDelete: 'CASCADE' })
  @JoinColumn({ name: 'student_id' })
  student: Student;

  @Column({ name: 'class_id', type: 'integer', nullable: true })
  classId: number;

  @ManyToOne(() => Class, { onDelete: 'SET NULL', nullable: true })
  @JoinColumn({ name: 'class_id' })
  class: Class;

  @Column({ name: 'attendance_date', type: 'date' })
  attendanceDate: string;

  @Column({ length: 20 })
  session: string;

  @Column({ length: 20 })
  status: string;

  @Column({ length: 200, nullable: true })
  remark: string;

  @Column({ name: 'source', length: 20, default: 'manual' })
  source: string;

  @CreateDateColumn({ name: 'created_at' })
  createdAt: Date;

  @UpdateDateColumn({ name: 'updated_at' })
  updatedAt: Date;
}