In this tutorial, we will explore how to build an e-commerce application using Redux for state management and the Stripe API for payment processing. By combining these powerful technologies, we can create a secure and reliable online shopping experience for our users.

Prerequisites

Before we begin, make sure you have the following prerequisites:

• Node.js installed on your machine
• React and Redux knowledge
• A Stripe account with your API keys

Setting Up the Project

Let’s start by setting up our project:

1. Create a new directory for your project and navigate into it.
2. Initialize a new React application by running the following command in your terminal:

npx create-react-app ecommerce-app-redux

1. Navigate into the project directory:

cd ecommerce-app-redux

1. Install the required packages for Redux and Stripe:

npm install redux react-redux @reduxjs/toolkit react-stripe-js @stripe/stripe-js

Configuring Stripe API

To use the Stripe API in our application, we need to configure it with our API keys. The keys can be found in your Stripe account dashboard.

1. Create a new file named .env in the root of your project.
2. Add the following lines to the .env file:

REACT_APP_STRIPE_PUBLISHABLE_KEY=your_publishable_key
REACT_APP_STRIPE_SECRET_KEY=your_secret_key

Make sure to replace your_publishable_key and your_secret_key with your actual Stripe API keys.

Building the Redux Store

Let’s set up our Redux store to manage the state of our e-commerce application.

1. Create a new directory named src/redux.
2. Inside the redux directory, create a new file named store.js.
3. Open the store.js file and add the following code:

import { configureStore } from '@reduxjs/toolkit';

const store = configureStore({
  reducer: {
    // Add your reducers here
  },
});

export default store;

1. Let’s create a sample reducer to get started. Create a new file named src/redux/cartSlice.js and add the following code:

import { createSlice } from '@reduxjs/toolkit';

const cartSlice = createSlice({
  name: 'cart',
  initialState: [],
  reducers: {
    addItem: (state, action) => {
      state.push(action.payload);
    },
    removeItem: (state, action) => {
      return state.filter(item => item.id !== action.payload.id);
    },
  },
});

export const { addItem, removeItem } = cartSlice.actions;

export default cartSlice.reducer;

1. Now, open src/redux/store.js and update the reducers field with your created reducers. For example:

import { configureStore } from '@reduxjs/toolkit';
import cartReducer from './cartSlice.js';

const store = configureStore({
  reducer: {
    cart: cartReducer,
  },
});

export default store;

Congratulations! You have set up your Redux store and created a sample reducer for the cart.

Integrating Stripe API

Now, let’s integrate the Stripe API to handle the payment processing of our e-commerce application.

1. Create a new directory named src/components.
2. Inside the components directory, create a new file named PaymentForm.js.
3. Open PaymentForm.js and add the following code:

import React from 'react';
import { CardElement, useStripe, useElements } from '@stripe/react-stripe-js';

const PaymentForm = () => {
  const stripe = useStripe();
  const elements = useElements();

  const handleSubmit = async (event) => {
    event.preventDefault();

    if (!stripe || !elements) {
      return;
    }

    const cardElement = elements.getElement(CardElement);

    const { error, paymentMethod } = await stripe.createPaymentMethod({
      type: 'card',
      card: cardElement,
    });

    if (error) {
      console.log(error);
    } else {
      console.log(paymentMethod);
    }
  };

  return (
    <form onSubmit={handleSubmit}>
      <CardElement />
      <button type="submit" disabled={!stripe}>
        Pay
      </button>
    </form>
  );
};

export default PaymentForm;

1. Now, you can use the PaymentForm component in your application to handle payments. For example, you can create a new CheckoutPage component and import PaymentForm inside it.

Congratulations! You have successfully built an e-commerce application with Redux for state management and integrated the Stripe API for payment processing.

Remember to handle the payment response from the Stripe API by linking it with your backend server.

#redux #stripe-api