/*
 * Absolute Web Intellectual Property
 *
 * @copyright    Copyright (c) 1999-2022 Absolute Web, Inc. (http://www.absoluteweb.com)
 * @author       Absolute Web
 * @license      http://www.absoluteweb.com/license-agreement/  Single domain license
 * @terms of use http://www.absoluteweb.com/terms-of-use/
 */

define(() => {
    let isInitialized = false;
    const options = {
            gtmScriptUrl: 'https://www.googletagmanager.com/gtm.js?id=GTM-W5PR9SP',
            gtagScriptUrl: 'https://www.googletagmanager.com/gtag/js?id=UA-122099173-1',
            optimizeScriptUrl: 'https://www.googleoptimize.com/optimize.js?id=OPT-PN7TMV2',
            mouseflowScriptUrl: '//cdn.mouseflow.com/projects/98edf6e9-c999-43dd-9f97-e2b439bf3cd4.js'
        }, fragment = document.createDocumentFragment();

    const _initGtm = () => {
        const script = document.createElement('script'),
            gtmInitializedEvent = new CustomEvent('gtm-initialized');

        window['dataLayer'] = window['dataLayer'] || [];
        window['dataLayer'].push({ 'gtm.start': new Date().getTime(), event: 'gtm.js' });

        script.src = options.gtmScriptUrl;
        script.async = 1;
        script.type = 'text/javascript';
        fragment.appendChild(script);

        document.dispatchEvent(gtmInitializedEvent);
    };

    const _initMouseflow = () => {
        const script = document.createElement('script');

        script.src = options.mouseflowScriptUrl;
        script.async = 1;
        script.type = 'text/javascript';
        fragment.appendChild(script);
    };

    const _initGtag = () => {
        const script = document.createElement('script');

        script.src = options.gtagScriptUrl;
        script.async = 1;
        script.type = 'text/javascript';
        fragment.appendChild(script);
    };

    const _initGoogleOptimize = () => {
        const script = document.createElement('script');

        script.src = options.optimizeScriptUrl;
        script.async = 1;
        script.type = 'text/javascript';
        fragment.appendChild(script);
    };

    window.gtag = function () { window.dataLayer.push(arguments); };

    ['touchmove', 'mousemove', 'scroll', 'click'].forEach(arrEvent => {
        document.addEventListener(arrEvent, () => {
            if (!isInitialized) {
                isInitialized = true;
                _initGtm();
                _initMouseflow();
                _initGtag();
                _initGoogleOptimize();
                document.body.appendChild(fragment);

                window.dataLayer = window.dataLayer || [];
                window.gtag('js', new Date());
                window.gtag('config', 'UA-122099173-1');
            }
        });
    });
});