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Products.js
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Products.js
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import React, { Component } from 'react';
import { connect } from 'react-redux';
import {
fetchProducts,
favouriteProduct,
unFavouriteProduct,
sortProducts
} from './actions';
import {
selectProductsLoading,
selectProductsError,
selectSortedProducts,
selectFavouritedProductIds,
selectSortedBy
} from './selectors';
class Products extends Component {
componentDidMount = () =>
this.props.fetchProducts();
favouriteProduct = id =>
this.props.favouriteProduct(id);
unFavouriteProduct = id =>
this.props.unFavouriteProduct(id);
sortProducts = ({ target: { value }}) =>
this.props.sortProducts(value);
render() {
const {
loading,
error,
products,
favourites,
sortedBy
} = this.props;
if (loading) return <div data-test-id="loading-products">Loading…</div>
if (error) return <div data-test-id="products-error">Failed to load products</div>
return (
<div data-test-id="products">
<h2>Products</h2>
<label htmlFor="products-sort">Sort By: {` `}</label>
<select data-test-id="products-sort" id="products-sort" value={sortedBy} onChange={this.sortProducts}>
<option value="PRICE_DESCENDING">Price descending</option>
<option value="PRICE_ASCENDING">Price ascending</option>
</select>
{products.map(({ heading, price, id }, index) => (
<div data-test-id={`product-${index}`} key={id} style={{
backgroundColor: favourites.includes(id) ? 'red' : 'inherit'
}}>
<h2>{heading}</h2>
<p>{`Cost: £${price}`}</p>
<button data-test-id="product-favourite" onClick={() => {
favourites.includes(id)
? this.unFavouriteProduct(id)
: this.favouriteProduct(id)
}}>
{favourites.includes(id) ? 'Unfavourite' : 'Favourite'} this product
</button>
</div>
))}
</div>
)
}
}
const mapStateToProps = state => ({
loading: selectProductsLoading(state),
error: selectProductsError(state),
products: selectSortedProducts(state),
favourites: selectFavouritedProductIds(state),
sortedBy: selectSortedBy(state)
});
export default connect(mapStateToProps, {
fetchProducts,
favouriteProduct,
unFavouriteProduct,
sortProducts
})(Products);