<?php

defined('ABSPATH') or exit('Please don&rsquo;t call the plugin directly. Thanks :)');

if (is_plugin_active('woocommerce/woocommerce.php')) {
    // Measure Purchases
    $purchasesOptions = seopress_get_service('GoogleAnalyticsOption')->getPurchases();
    if (!$purchasesOptions) {
        return;
    }

    if (function_exists('is_order_received_page') && is_order_received_page()) {
        global $wp;
        $order_id = isset($wp->query_vars['order-received']) ? $wp->query_vars['order-received'] : 0;

        if (0 < $order_id && 1 != get_post_meta($order_id, '_seopress_ga_tracked', true)) {
            $order = wc_get_order($order_id);

            //Check order status

            $status = ['completed', 'processing'];
            $status = apply_filters('seopress_gtag_ec_status', $status);

            if (method_exists($order, 'get_status') && (in_array($order->get_status(), $status))) {
                $items_purchased = [];
                foreach ($order->get_items() as $item) {
                    // Get Product object
                    $_product = wc_get_product($item->get_product_id());

                    if ( ! is_a($_product, 'WC_Product')) {
                        continue;
                    }

                    // init vars
                    $item_id        = $_product->get_id();
                    $variation_id   = 0;
                    $variation_data = null;
                    $categories_js  = null;
                    $categories_out = [];
                    $variant_js     = null;

                    // Set data
                    $items_purchased['id']       = esc_js($item_id);
                    $items_purchased['name']     = esc_js($item->get_name());
                    $items_purchased['quantity'] = (float) esc_js($item->get_quantity());
                    $items_purchased['price']    = (float) esc_js($order->get_item_total($item));

                    // Categories and Variations
                    $categories = get_the_terms($item_id, 'product_cat');
                    if ($item->get_variation_id()) {
                        $variation_id   = $item->get_variation_id();
                        $variation_data = wc_get_product_variation_attributes($variation_id);
                    }

                    // Variations
                    if (is_array($variation_data) && ! empty($variation_data)) {
                        $variant_js = esc_js(wc_get_formatted_variation($variation_data, true));
                        $categories = get_the_terms($item_id, 'product_cat');
                        $item_id    = $variation_id;

                        $items_purchased['variant'] = esc_js($variant_js);
                    }
                    // Categories
                    if ($categories) {
                        foreach ($categories as $category) {
                            $categories_out[] = $category->name;
                        }
                        $categories_js = esc_js(implode('/', $categories_out));

                        $items_purchased['category'] = esc_js($categories_js);
                    }

                    $final[] = $items_purchased;
                }

                $global_purchase = [
                    'transaction_id' => esc_js($order_id),
                    'affiliation'    => esc_js(get_bloginfo('name')),
                    'value'          => (float) esc_js($order->get_total()),
                    'currency'       => esc_js($order->get_currency()),
                    'tax'            => (float) esc_js($order->get_total_tax()),
                    'shipping'       => (float) esc_js($order->get_shipping_total()),
                    'items'          => $final,
                ];

                $seopress_google_analytics_click_event['purchase_tracking'] = 'gtag(\'event\', \'purchase\',';
                $seopress_google_analytics_click_event['purchase_tracking'] .= json_encode($global_purchase);
                $seopress_google_analytics_click_event['purchase_tracking'] .= ');';
                $seopress_google_analytics_click_event['purchase_tracking'] = apply_filters('seopress_gtag_ec_purchases_ev', $seopress_google_analytics_click_event['purchase_tracking']);

                update_post_meta($order_id, '_seopress_ga_tracked', true);
            }
        }
    }
}

if (apply_filters('seopress_fallback_woocommerce_analytics', false)) {
    if (is_plugin_active('woocommerce/woocommerce.php')) {
        // ADD TO CART
        if (seopress_get_service('GoogleAnalyticsOption')->getAddToCart()) {
            // Listing page
            add_action('woocommerce_after_shop_loop_item', 'seopress_loop_add_to_cart');
            function seopress_loop_add_to_cart() {
                // Get current product
                global $product;

                // Set data
                $items_purchased['id']        = esc_js($product->get_id());
                $items_purchased['name']      = esc_js($product->get_title());
                $items_purchased['list_name'] = esc_js(get_the_title());
                $items_purchased['quantity']  = (float) esc_js(1);
                $items_purchased['price']     = (float) esc_js($product->get_price());

                // Extract categories
                $categories = get_the_terms($product->get_id(), 'product_cat');
                if ($categories) {
                    foreach ($categories as $category) {
                        $categories_out[] = $category->name;
                    }
                    $categories_js               = esc_js(implode('/', $categories_out));
                    $items_purchased['category'] = esc_js($categories_js);
                }

                // Echo JS
                $js = "<script>
                    jQuery('.ajax_add_to_cart').unbind().click( function(){
                        gtag('event', 'add_to_cart', {'items': [ " . json_encode($items_purchased) . ' ]});
                    });
                </script>';

                $js = apply_filters('seopress_gtag_ec_add_to_cart_archive_ev', $js);

                echo $js;
            }

            // Single
            add_action('woocommerce_after_add_to_cart_button', 'seopress_single_add_to_cart');
            function seopress_single_add_to_cart() {
                // Get current product
                global $product;

                // Set data
                $items_purchased['id']        = esc_js($product->get_id());
                $items_purchased['name']      = esc_js($product->get_title());
                $items_purchased['list_name'] = esc_js(get_the_title());
                $items_purchased['quantity']  = "$( 'input.qty' ).val() ? $( 'input.qty' ).val() : '1'";
                $items_purchased['price']     = (float) esc_js($product->get_price());

                // Extract categories
                $categories = get_the_terms($product->get_id(), 'product_cat');
                if ($categories) {
                    foreach ($categories as $category) {
                        $categories_out[] = $category->name;
                    }
                    $categories_js               = esc_js(implode('/', $categories_out));
                    $items_purchased['category'] = esc_js($categories_js);
                }

                // Echo JS
                $js = "<script>jQuery('.single_add_to_cart_button').click( function(){
                    gtag('event', 'add_to_cart', {'items': [ " . json_encode($items_purchased) . ' ]});
                });</script>';

                $js = apply_filters('seopress_gtag_ec_add_to_cart_single_ev', $js);

                echo $js;
            }
        }

        // REMOVE FROM CART
        if (seopress_get_service('GoogleAnalyticsOption')->getRemoveFromCart()) {
            // Cart page
            add_filter('woocommerce_cart_item_remove_link', 'seopress_cart_remove_from_cart', 10, 2);
            function seopress_cart_remove_from_cart($sprintf, $cart_item_key) {
                // Extract cart and get current product data
                global $woocommerce;
                foreach ($woocommerce->cart->get_cart() as $key => $item) {
                    if ($key == $cart_item_key) {
                        $product                     = wc_get_product($item['product_id']);
                        $items_purchased['quantity'] = (float) $item['quantity'];
                    }
                }

                // Get current product
                if ($product) {
                    // Set data
                    $items_purchased['id']        = esc_js($product->get_id());
                    $items_purchased['name']      = esc_js($product->get_title());
                    $items_purchased['list_name'] = esc_js(get_the_title());
                    $items_purchased['price']     = (float) esc_js($product->get_price());

                    // Extract categories
                    $categories = get_the_terms($product->get_id(), 'product_cat');
                    if ($categories) {
                        foreach ($categories as $category) {
                            if (is_object($category) && property_exists($category, 'name')) {
                                $categories_out[] = $category->name;
                            } elseif (is_array($category) && isset($category['name'])) {
                                $categories_out[] = $category['name'];
                            }
                        }
                        $categories_js               = esc_js(implode('/', $categories_out));
                        $items_purchased['category'] = esc_js($categories_js);
                    }

                    // Return JS
                    $sprintf .= "<script>jQuery('.product-remove .remove').unbind().click( function(){
                        gtag('event', 'remove_from_cart', {'items': [ " . json_encode($items_purchased) . ' ]});
                    });</script>';
                }

                $sprintf = apply_filters('seopress_gtag_ec_remove_from_cart_ev', $sprintf);

                return $sprintf;
            }
        }

        // UPDATE CART (cart / checkout pages)
        if (seopress_get_service('GoogleAnalyticsOption')->getAddToCart() && seopress_get_service('GoogleAnalyticsOption')->getRemoveFromCart()) {
            // Before update
            add_action('woocommerce_cart_actions', 'seopress_before_update_cart');
            function seopress_before_update_cart() {
                // Extract cart
                global $woocommerce;
                foreach ($woocommerce->cart->get_cart() as $key => $item) {
                    $product = wc_get_product($item['product_id']);
                    // Get current product
                    if ($product) {
                        // Set data
                        $items_purchased['id']        = esc_js($product->get_id());
                        $items_purchased['name']      = esc_js($product->get_title());
                        $items_purchased['list_name'] = esc_js(get_the_title());
                        $items_purchased['quantity']  = (float) esc_js($item['quantity']);
                        $items_purchased['price']     = (float) esc_js($product->get_price());

                        // Extract categories
                        $categories = get_the_terms($product->get_id(), 'product_cat');
                        if ($categories) {
                            foreach ($categories as $category) {
                                $categories_out[] = $category->name;
                            }
                            $categories_js               = esc_js(implode('/', $categories_out));
                            $items_purchased['category'] = esc_js($categories_js);
                        }
                    }

                    $final[] = $items_purchased;
                }

                // Return JS
                $js = "<script>jQuery('.actions .button').unbind().click( function(){
                    gtag('event', 'remove_from_cart', {'items': " . json_encode($final) . '});
                });</script>';

                $js = apply_filters('seopress_gtag_ec_remove_from_cart_checkout_ev', $js);

                echo $js;
            }
        }
    }
}