README.md

MEARN Stack eCommerce Application

This repository contains a React-based ecommerce application that allows users to browse and purchase products online. The app provides a user-friendly interface for customers to explore various products, add them to their shopping cart, and proceed to the checkout process.

Backend Stack

• Expressjs & Nodejs

Database:

• MongoDB
• Mongoosejs (data modeling)

Frontend Stack

• Reactjs, Reduxjs & Bootstrap.

---

Cart Reducer Class

export const cartReducer = (state = { cartItems: [] }, action) => {
   switch (action.type) {
   	case CART_ADD_ITEM:
   		const item = action.payload;
   		const existItem = state.cartItems.find((x) => x.product === item.product);

   		if (existItem) {
   			return {
   				...state,
   				cartItems: state.cartItems.map((x) =>
   					x.product === existItem.product ? item : x
   				),
   			};
   		}
   		else {
   			return { ...state, cartItems: [...state.cartItems, item] };
   		}

   	case CART_REMOVE_ITEM:
   		return {
   			...state,
   			cartItems: state.cartItems.filter((x) => x.product !== action.payload),
   		};

   
   	case CART_EMPTY:
   		return { ...state, cartItems: [] };

   	default:
   		return state;
   }
};