import { Content } from 'src/contents/entities/content.entity';
import { DiscountRedemption } from 'src/discount-redemption/entities/discount-redemption.entity';

import {
  Entity,
  Column,
  ManyToOne,
  OneToMany,
  CreateDateColumn,
  UpdateDateColumn,
  JoinColumn,
  DeleteDateColumn,
  PrimaryColumn,
} from 'typeorm';
import {
  DiscountType,
  DiscountTypes,
} from '../constants/discount-type.constant';
import { User } from 'src/users/entities/user.entity';
import { Season } from 'src/season/entities/season.entity';

@Entity('discounts')
export class Discount {
  @PrimaryColumn()
  id: string;

  @ManyToOne(() => Content, (content) => content.discounts, {
    nullable: true,
    onDelete: 'CASCADE',
  })
  @JoinColumn({ name: 'content_id' })
  content: Content | null;

  @Column({ type: 'varchar', nullable: true })
  contentId: string | null;

  @ManyToOne(() => Season, (season) => season.discounts, {
    nullable: true,
    onDelete: 'CASCADE',
  })
  @JoinColumn({ name: 'season_id' })
  season: Season | null;

  @Column({ type: 'varchar', nullable: true })
  seasonId: string | null;

  @Column({ type: 'varchar', length: 50, nullable: false })
  couponCode: string;

  @Column({
    type: 'decimal',
    precision: 15,
    scale: 2,
    nullable: false,
    transformer: {
      to: (value) => value,
      from: (value) => Number.parseFloat(value),
    },
  })
  value: number;

  @Column({
    type: 'varchar',
    length: 20,
    default: DiscountTypes.PERCENTAGE,
  })
  type: DiscountType;

  // Start date (null = no start date)
  @Column({ type: 'timestamp', nullable: true })
  startDate: Date | null;

  // End date (null = no expiration date)
  @Column({ type: 'timestamp', nullable: true })
  expirationDate: Date | null;

  // Total usage limit (null = unlimited)
  @Column({ type: 'int', nullable: true })
  maxUses: number | null;

  @Column({ type: 'varchar', length: 255, nullable: true })
  email: string | null;

  @OneToMany(() => DiscountRedemption, (redemption) => redemption.discount)
  redemptions: DiscountRedemption[];

  @ManyToOne(() => User, { nullable: false })
  @JoinColumn({ name: 'created_by_id' })
  createdBy: User;

  @Column({ type: 'varchar' })
  createdById: string;

  @CreateDateColumn()
  createdAt: Date;

  @UpdateDateColumn()
  updatedAt: Date;

  // Soft delete
  @DeleteDateColumn()
  deletedAt: Date | null;
}