종속성 역전

우리가 가진 문제

해결책

몇 가지 코드 스니펫으로 시작하겠습니다.

import PaymentService from "./PaymentService";
class PaymentStore {
  constructor(paymentWrapper) {
    this.paymentWrapper = paymentWrapper;
    this.paymentService = new PaymentService();
  }

  async makeTransaction(chargeData) {
    const charge = await this.paymentWrapper.createCharge(chargeData);
    await this.paymentService.addNewCharge(charge);
    return charge;
  }
}

export default PaymentStore;

import Stripe from "stripe";
import mockPayment from "./Stripe/mockPayment";
class StripeServiceWrapper {
  constructor() {
    this.stripe = new Stripe(process.env.STRIPE_SECRET_KEY);
  }
  async createCharge() {
    const { amount, currency, description, source } = mockPayment;
    const charge = await this.stripe.charges.create({
      amount,
      currency,
      description,
      source,
    });
    return charge;
  }

  async createCustomer(customerData) {
    const { name, email, source, address, phone } = customerData;
    const customer = await stripe.customers.create({
      address,
      name,
      email,
      phone,
      source,
    });
    return customer;
  }
}

export default StripeServiceWrapper;

import paypal from "paypal-rest-sdk";
import "./PayPal/PayPalConfig";

class PayPalServiceWrapper {
  createCharge({ payment_object, paymentId }) {
    return new Promise(function (resolve, reject) {
      paypal.payment.execute(paymentId, payment_object, function (error, payment) {
        if (error) reject(error);
        else {
          const { id, transactions } = payment;
          resolve({ id, amount: parseInt(transactions[0].amount.total) });
        }
      });
    });
  }

  paymentExecutionLink(paymentObject) {
    return new Promise(function (resolve, reject) {
      paypal.payment.create(paymentObject, function (error, payment) {
        if (error) reject(error);
        else resolve(payment);
      });
    });
  }

  getRedirectLink(links) {
    for (let i = 0; i < links.length; i++) {
      if (links[i].rel === "approval_url") return links[i].href;
    }
  }
}

export default PayPalServiceWrapper;

const post = async (req, res) => {
  const store = new PaymentStore(new StripeServiceWrapper());
  await store.makeTransaction();
  return res.status(200).send({SUCCESS_MESSAGE});
};

코드와 쉽게 시작하는 방법을 찾을 수 있습니다.

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