import { Injectable } from '@nestjs/common';
import { PrismaService } from '../../prisma/prisma.service';
import { Brand } from '../../prisma/generated/client';
import { BrandCreateInput } from '../../prisma/generated/models/Brand';

/** Database access to brands. Rows are matched with Hiboutik by `hiboutikId`. */
@Injectable()
export class BrandDatabaseRepository {
  constructor(private readonly prisma: PrismaService) {}

  async getAll(): Promise<Brand[]> {
    return this.prisma.brand.findMany({
      orderBy: { hiboutikId: 'asc' },
    });
  }

  /** Creates or updates the brand with the same `hiboutikId`. */
  async upsert(brand: BrandCreateInput): Promise<Brand> {
    return this.prisma.brand.upsert({
      where: { hiboutikId: brand.hiboutikId },
      create: brand,
      update: brand,
    });
  }

  /**
   * Deletes the brands that no longer exist in Hiboutik.
   * Their products are kept: the relation is set to null (onDelete: SetNull).
   */
  async deleteMissing(keptHiboutikIds: number[]): Promise<number> {
    const result = await this.prisma.brand.deleteMany({
      where: { hiboutikId: { notIn: keptHiboutikIds } },
    });
    return result.count;
  }
}