import { Voucher } from '../lib/Voucher';
import { Configuration } from '../interfaces/configuration.interface';
import { VoucherSpConnector } from './VoucherSpConnector.service';
export class VoucherSpService {
  private static _instance: VoucherSpService = new VoucherSpService();
  private static _apiEndPoint = '';
  private _vouchers: Voucher[] = [];
  constructor() {
    if (VoucherSpService._instance) {
      throw new Error("Error: Instantiation failed: Use VoucherSpService.getInstance() instead of new.");
    }
    VoucherSpService._instance = this;
  }

  public static getInstance(apiEndPoint: string): VoucherSpService {
    VoucherSpService._apiEndPoint = apiEndPoint;
    return VoucherSpService._instance;
  }

  public setVoucherCode(couponCode: string, configuration: Configuration) {
    const voucher = this._vouchers.find(
      voucher => couponCode === voucher.getVoucherCode()
    );
    if (!voucher) {
      const voucherNew = new Voucher(configuration, couponCode, VoucherSpService._apiEndPoint);
      this._vouchers.push(voucherNew);
      return voucherNew;
    }
    return voucher;
  }

  public getVoucherInstance(couponCode: string) {
    const voucher = this._vouchers.find(
      voucher => couponCode === voucher.getVoucherCode()
    );
    if (voucher) {
      return voucher
    } else {
      throw new Error('Voucher not found');
    }
  }
  public async getSlugName(serviceProviderkey: string,email:string) {
    return await VoucherSpConnector.getSlugName(serviceProviderkey,VoucherSpService._apiEndPoint,email)
  }
  public async getServiceProviderKey(email: string) {
    return await VoucherSpConnector.getServiceProviderKey(email,VoucherSpService._apiEndPoint)
  }
}