import { Column, DeleteDateColumn, Entity, ManyToOne, OneToMany } from "typeorm";

import { UsageDiscount } from "./usage-discount.entity";
import { BaseEntity } from "../../../common/entities/base.entity";
import { DecimalTransformer } from "../../../common/transformers/decimal.transformer";
import { Invoice } from "../../invoices/entities/invoice.entity";
import { SubscriptionPlan } from "../../subscriptions/entities/subscription.entity";
import { User } from "../../users/entities/user.entity";
import { DiscountApplicationType } from "../enums/discount-application-type.enum";
import { DiscountType } from "../enums/discount-type.enum";

@Entity()
export class Discount extends BaseEntity {
  @Column({ type: "varchar", length: 150 })
  title: string;

  @Column({ type: "enum", enum: DiscountApplicationType })
  applicationType: DiscountApplicationType;

  @Column({ type: "varchar", length: 100, unique: true, nullable: true })
  code?: string;

  @Column({ type: "enum", enum: DiscountType, default: DiscountType.PERCENTAGE })
  type: DiscountType;

  @Column({ type: "decimal", precision: 16, scale: 2, transformer: new DecimalTransformer() })
  value: number;

  @Column({ type: "timestamptz" })
  startDate: Date;

  @Column({ type: "timestamptz" })
  endDate: Date;

  @Column({ type: "int", default: 0 })
  usedCount: number;

  @Column({ type: "boolean", default: true })
  isActive: boolean;

  @DeleteDateColumn({ nullable: true })
  deletedAt?: Date;

  @ManyToOne(() => User, (user) => user.discounts, { nullable: true })
  user?: User | null;

  @OneToMany(() => UsageDiscount, (usageDiscount) => usageDiscount.discount)
  usages: UsageDiscount[];

  @OneToMany(() => SubscriptionPlan, (subscriptionPlan) => subscriptionPlan.directDiscount, { cascade: ["update"] })
  subscriptionPlans: SubscriptionPlan[];

  @OneToMany(() => Invoice, (invoice) => invoice.discount)
  invoices: Invoice[];
}