https://www.daklapack.us/js/ga4-ecommerce-tracking.js?v=jfQKsfFYV521npLp6oyKTSvKiO-5t-_X7xTgAOfROdI

1(function() {
2    'use strict';
3
4    window.dataLayer = window.dataLayer || [];
5
6    /**
7     * Push GA4 event to dataLayer from JSON string
8     * @param {string} eventJson - JSON string of GA4 event
9     */
10    function pushGA4Event(eventJson) {
11        try {
12            const eventData = JSON.parse(eventJson);
13            window.dataLayer.push({ ecommerce: null });
14            window.dataLayer.push(eventData);
15        } catch (error) {
16            console.error('GA4: Failed to parse event JSON', error);
17        }
18    }
19
20    /**
21     * Hook into add to cart AJAX responses to track GA4 events
22     * This intercepts the response from the AddToCart endpoint
23     */
24    function initAddToCartTracking() {
25        const originalFetch = window.fetch;
26        
27        // Override fetch to intercept add to cart responses
28        window.fetch = function(...args) {
29            return originalFetch.apply(this, args).then(response => {
30                // Clone response so we can read it
31                const clonedResponse = response.clone();
32                
33                // Check if this is an add to cart request
34                if (args[0] && args[0].includes('/umbraco/Surface/CartSurface/AddToCart')) {
35                    clonedResponse.json().then(data => {
36                        if (data && data.ga4Event) {
37                            // Push the GA4 event to dataLayer
38                            pushGA4Event(data.ga4Event);
39                        }
40                    }).catch(err => {
41                        console.error('GA4: Failed to parse AddToCart response', err);
42                    });
43                }
44                
45                return response;
46            });
47        };
48
49        // Intercept XMLHttpRequest (for non-fetch AJAX calls)
50        const originalXHROpen = XMLHttpRequest.prototype.open;
51        const originalXHRSend = XMLHttpRequest.prototype.send;
52        
53        XMLHttpRequest.prototype.open = function(method, url, ...rest) {
54            this._url = url;
55            return originalXHROpen.apply(this, [method, url, ...rest]);
56        };
57        
58        XMLHttpRequest.prototype.send = function(...args) {
59            this.addEventListener('load', function() {
60                if (this._url && this._url.includes('/umbraco/Surface/CartSurface/AddToCart')) {
61                    try {
62                        const data = JSON.parse(this.responseText);
63                        if (data && data.ga4Event) {
64                            pushGA4Event(data.ga4Event);
65                        }
66                    } catch (e) {
67                        console.error('GA4: Failed to parse AddToCart XHR response', e);
68                    }
69                }
70            });
71            return originalXHRSend.apply(this, args);
72        };
73
74        // Also handle jQuery AJAX if used
75        if (window.jQuery) {
76            $(document).ajaxSuccess(function(event, xhr, settings) {
77                if (settings.url && settings.url.includes('/umbraco/Surface/CartSurface/AddToCart')) {
78                    try {
79                        const data = JSON.parse(xhr.responseText);
80                        if (data && data.ga4Event) {
81                            pushGA4Event(data.ga4Event);
82                        }
83                    } catch (e) {
84                        console.error('GA4: Failed to parse AddToCart jQuery response', e);
85                    }
86                }
87            });
88        }
89    }
90
91    // Initialize when DOM is ready
92    if (document.readyState === 'loading') {
93        document.addEventListener('DOMContentLoaded', function() {
94            initAddToCartTracking();
95        });
96    } else {
97        initAddToCartTracking();
98    }
99
100    // Expose functions globally for manual triggering if needed
101    window.GA4Tracking = {
102        pushEvent: pushGA4Event
103    };
104
105})();