import { Injectable } from '@nestjs/common';
import { CreateMerchantDto } from './dto/create-merchant.dto';
import { UpdateMerchantDto } from './dto/update-merchant.dto';
import { MerchantDataService } from './merchant-data.service';
import { Merchant } from './entities/merchant.entity';

@Injectable()
export class MerchantsService {
  public constructor(private merchantDataService: MerchantDataService) { }

  public async findAll(): Promise<Merchant[]> {
    return await this.merchantDataService.getAllMerchants();
  }

  public async findById(id: string): Promise<Merchant> {
    const merchant = await this.merchantDataService.getMerchantById(id);
    if (!merchant) {
      throw new Error('Merchant not found.');
    }

    return merchant;
  }

  public async create(newMerchant: CreateMerchantDto): Promise<Merchant> {
    return await this.merchantDataService.createMerchant(newMerchant.name);
  }

  public async update(updateMerchant: UpdateMerchantDto): Promise<Merchant> {
    return await this.merchantDataService.updateMerchant(updateMerchant);
  }

  public async remove(id: string): Promise<void> {
    await this.merchantDataService.deleteMerchant(id);
  }
}