import {
  Entity,
  PrimaryGeneratedColumn,
  Column,
  ManyToOne,
  JoinColumn,
  CreateDateColumn,
  UpdateDateColumn,
} from 'typeorm';
import type { Relation } from 'typeorm';
import type { User } from '../../auth/entities/user.entity';

export enum TaskType {
  ASSIGNMENT = 'assignment',
  QUIZ = 'quiz',
  LAB = 'lab',
  STUDY = 'study',
  CUSTOM = 'custom',
}

export enum TaskPriority {
  LOW = 'low',
  MEDIUM = 'medium',
  HIGH = 'high',
}

export enum TaskStatus {
  PENDING = 'pending',
  IN_PROGRESS = 'in_progress',
  COMPLETED = 'completed',
  OVERDUE = 'overdue',
}

@Entity('student_tasks')
export class StudentTask {
  @PrimaryGeneratedColumn({ name: 'task_id', type: 'bigint', unsigned: true })
  taskId: number;

  @Column({ name: 'user_id', type: 'bigint', unsigned: true })
  userId: number;

  @Column({ name: 'task_type', type: 'enum', enum: TaskType })
  taskType: TaskType;

  @Column({ name: 'assignment_id', type: 'bigint', unsigned: true, nullable: true })
  assignmentId: number | null;

  @Column({ name: 'quiz_id', type: 'bigint', unsigned: true, nullable: true })
  quizId: number | null;

  @Column({ name: 'lab_id', type: 'bigint', unsigned: true, nullable: true })
  labId: number | null;

  @Column({ name: 'title', type: 'varchar', length: 255 })
  title: string;

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

  @Column({ name: 'due_date', type: 'timestamp', nullable: true })
  dueDate: Date | null;

  @Column({ name: 'priority', type: 'enum', enum: TaskPriority, default: TaskPriority.MEDIUM })
  priority: TaskPriority;

  @Column({ name: 'status', type: 'enum', enum: TaskStatus, default: TaskStatus.PENDING })
  status: TaskStatus;

  @Column({ name: 'completion_percentage', type: 'int', default: 0 })
  completionPercentage: number;

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

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

  @ManyToOne('User')
  @JoinColumn({ name: 'user_id' })
  user: Relation<User>;
}