/* global wc_add_to_cart_params */
jQuery( function( $ ) {

	if ( typeof wc_add_to_cart_params === 'undefined' ) {
		return false;
	}

	/**
	 * AddToCartHandler class.
	 */
	var AddToCartHandler = function() {
		$( document.body )
			.on( 'click', '.add_to_cart_button', this.onAddToCart )
			.on( 'click', '.remove_from_cart_button', this.onRemoveFromCart )
			.on( 'added_to_cart', this.updateButton )
			.on( 'added_to_cart', this.updateCartPage )
			.on( 'added_to_cart removed_from_cart', this.updateFragments );
	};

	/**
	 * Handle the add to cart event.
	 */
	AddToCartHandler.prototype.onAddToCart = function( e ) {
		var $thisbutton = $( this );

		if ( $thisbutton.is( '.ajax_add_to_cart' ) ) {
			if ( ! $thisbutton.attr( 'data-product_id' ) ) {
				return true;
			}

			e.preventDefault();

			$thisbutton.removeClass( 'added' );
			$thisbutton.addClass( 'loading' );

			var data = {};

			$.each( $thisbutton.data(), function( key, value ) {
				data[ key ] = value;
			});

			// Trigger event.
			$( document.body ).trigger( 'adding_to_cart', [ $thisbutton, data ] );

			// Ajax action.
			$.post( wc_add_to_cart_params.wc_ajax_url.toString().replace( '%%endpoint%%', 'add_to_cart' ), data, function( response ) {
				if ( ! response ) {
					return;
				}

				if ( response.error && response.product_url ) {
					window.location = response.product_url;
					return;
				}

				// Redirect to cart option
				if ( wc_add_to_cart_params.cart_redirect_after_add === 'yes' ) {
					window.location = wc_add_to_cart_params.cart_url;
					return;
				}

				// Trigger event so themes can refresh other areas.
				$( document.body ).trigger( 'added_to_cart', [ response.fragments, response.cart_hash, $thisbutton ] );
			});
		}
	};

	/**
	 * Update fragments after remove from cart event in mini-cart.
	 */
	AddToCartHandler.prototype.onRemoveFromCart = function( e ) {
		var $thisbutton = $( this ),
			$row        = $thisbutton.closest( '.woocommerce-mini-cart-item' );

		e.preventDefault();

		$row.block({
			message: null,
			overlayCSS: {
				opacity: 0.6
			}
		});

		$.post( wc_add_to_cart_params.wc_ajax_url.toString().replace( '%%endpoint%%', 'remove_from_cart' ), { cart_item_key : $thisbutton.data( 'cart_item_key' ) }, function( response ) {
			if ( ! response || ! response.fragments ) {
				window.location = $thisbutton.attr( 'href' );
				return;
			}
			$( document.body ).trigger( 'removed_from_cart', [ response.fragments, response.cart_hash, $thisbutton.data() ] );
		}).fail( function() {
			window.location = $thisbutton.attr( 'href' );
			return;
		});
	};

	/**
	 * Update cart page elements after add to cart events.
	 */
	AddToCartHandler.prototype.updateButton = function( e, fragments, cart_hash, $button ) {
		$button = typeof $button === 'undefined' ? false : $button;

		if ( $button ) {
			$button.removeClass( 'loading' );
			$button.addClass( 'added' );

			// View cart text.
			if ( ! wc_add_to_cart_params.is_cart && $button.parent().find( '.added_to_cart' ).length === 0 ) {
				$button.after( ' <a href="' + wc_add_to_cart_params.cart_url + '" class="added_to_cart wc-forward" title="' +
					wc_add_to_cart_params.i18n_view_cart + '">' + wc_add_to_cart_params.i18n_view_cart + '</a>' );
			}

			$( document.body ).trigger( 'wc_cart_button_updated', [ $button ] );
		}
	};

	/**
	 * Update cart page elements after add to cart events.
	 */
	AddToCartHandler.prototype.updateCartPage = function() {
		var page = window.location.toString().replace( 'add-to-cart', 'added-to-cart' );

		$( '.shop_table.cart' ).load( page + ' .shop_table.cart:eq(0) > *', function() {
			$( '.shop_table.cart' ).stop( true ).css( 'opacity', '1' ).unblock();
			$( document.body ).trigger( 'cart_page_refreshed' );
		});

		$( '.cart_totals' ).load( page + ' .cart_totals:eq(0) > *', function() {
			$( '.cart_totals' ).stop( true ).css( 'opacity', '1' ).unblock();
			$( document.body ).trigger( 'cart_totals_refreshed' );
		});
	};

	/**
	 * Update fragments after add to cart events.
	 */
	AddToCartHandler.prototype.updateFragments = function( e, fragments ) {
		if ( fragments ) {
			$.each( fragments, function( key ) {
				$( key )
					.addClass( 'updating' )
					.fadeTo( '400', '0.6' )
					.block({
						message: null,
						overlayCSS: {
							opacity: 0.6
						}
					});
			});

			$.each( fragments, function( key, value ) {
				$( key ).replaceWith( value );
				$( key ).stop( true ).css( 'opacity', '1' ).unblock();
			});

			$( document.body ).trigger( 'wc_fragments_loaded' );
		}
	};

	/**
	 * Init AddToCartHandler.
	 */
	new AddToCartHandler();
});