'use strict';

/*globals document, console, XMLHttpRequest*/

function polyfill() {
    if (typeof Object.assign !== 'function') {
        // Must be writable: true, enumerable: false, configurable: true
        Object.defineProperty(Object, "assign", {
            value: function assign(target, varArgs) { // .length of function is 2
                'use strict';
                if (target == null) { // TypeError if undefined or null
                    throw new TypeError('Cannot convert undefined or null to object');
                }

                var to = Object(target);

                for (var index = 1; index < arguments.length; index++) {
                    var nextSource = arguments[index];

                    if (nextSource != null) { // Skip over if undefined or null
                        for (var nextKey in nextSource) {
                            // Avoid bugs when hasOwnProperty is shadowed
                            if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
                                to[nextKey] = nextSource[nextKey];
                            }
                        }
                    }
                }
                return to;
            },
            writable: true,
            configurable: true
        });
    }
}

polyfill();

(function (window, document, elemTag, srcUrl, r, a, m) {
    a = document.createElement(elemTag);
    m = document.getElementsByTagName(elemTag)[0];
    a.async = 1;
    a.src = srcUrl;
    m.parentNode.insertBefore(a, m);
})(window, document, 'script', 'https://www.googletagmanager.com/gtag/js?id=UA-115538286-1');

window.dataLayer = window.dataLayer || [];

// (function (window, document, elemTag, srcUrl, r, a, m) {
//     a = document.createElement(elemTag);
//     m = document.getElementsByTagName(elemTag)[0];
//     a.async = 1;
//     a.src = srcUrl;
//     m.parentNode.insertBefore(a, m);
// })(window, document, 'script', '//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js');
//
// (window.adsbygoogle = window.adsbygoogle || []).push({
//     google_ad_client: "ca-pub-1287965589478199",
//     enable_page_level_ads: true
// });

(function () {
    var DEBUG = true;
    var serverHost = 'https://app.wabi-app.com';
    var lang = 'en';
    var phoneNumber = '+447405500524';
    var position = 'left';
    var gaId = 'UA-115538286-1';

    var Util = {
        isMobile: function () {
            return (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent));
        },
        addResetCss: function () {
            var cssId = 'wabiCss';  // you could encode the css path itself to generate id..
            if (!document.getElementById(cssId)) {
                var head = document.getElementsByTagName('head')[0];
                var link = document.createElement('link');
                link.id = cssId;
                link.rel = 'stylesheet';
                link.type = 'text/css';
                link.href = 'https://cdnjs.cloudflare.com/ajax/libs/yui/3.18.1/cssnormalize-context/cssnormalize-context-min.css';
                link.media = 'all';
                head.appendChild(link);
            }
        }
    };

    function init() {
        Util.addResetCss();
        var wabiWidgets = document.querySelectorAll('.wabi-chat-widget');
        if (wabiWidgets && wabiWidgets.length > 0) {
            return;
        }
        var wabiElem = document.createElement('div');
        wabiElem.setAttribute('class', 'wabi-chat-widget yui3-normalized');
        wabiElem.style.width = 'unset';
        wabiElem.style.minWidth = '0';
        inflateWabiWidget(wabiElem);
        document.body.appendChild(wabiElem);
    }

    function inflateWabiWidget(wabiWidget) {
        window.addEventListener('message', function (e) {
            var command = e.data && e.data.command;
            if (command === 'wabi_toggle_window') {
                if (screen.width < (420 + 32)) {
                    wabiWindow.style.width = Math.max(screen.width - 32, 340) + "px";
                }
                // if (isMobile() && !phoneNumber) { // if client didnt provide us phone number and its mobile, we need higher height to accomodate the ..
                //     wabiWindow.style.height = "360px";
                // }
                var label = e.data.source;
                if (wabiWindow.style.opacity === '0') {
                    logEvent('window_show', {
                        event_category: 'widget',
                        event_label: label
                    });
                    wabiWindow.style.display = 'inline';
                    setTimeout(function () {
                        wabiWindow.style.opacity = "1";
                    }, 0);
                } else {
                    logEvent('window_hide', {
                        event_category: 'widget',
                        event_label: label
                    });
                    wabiWindow.style.opacity = "0";
                    setTimeout(function () {
                        wabiWindow.style.display = 'none';
                    }, 100);
                }
            } else if (command === 'wabi_window_ready') {
                for (var i = 0; i < this.frames.length; i++) {
                    var frame = this.frames[i];
                    frame.postMessage('wabi_window_ready', '*');
                }
            } else if (command === 'wabi_show_button') {
                wabiButton.style.display = 'inline';
            } else if (command === 'open_wabi_website') {
                var utmMedium = window.location.hostname;
                window.open('https://www.wabi-app.com/?utm_source=wabi-widget&utm_medium=' + utmMedium + '&utm_campaign=powered-by', '_blank');
            }
        });
        var innerElem = document.createElement('div');
        // innerElem.style.border = 'none';
        // innerElem.style.overflow = 'hidden';
        // innerElem.style.background = 'none';
        // innerElem.style.bottom = "18px";
        // var right = isMobile() ? "4px" : "18px";
        // innerElem.style.right = right;
        // innerElem.style.display = "inline";
        // innerElem.style.padding = "0px";
        // innerElem.style.position = "fixed";
        // innerElem.style.top = "auto";
        // innerElem.style.height = "100px";
        // innerElem.style.width = "100px";
        innerElem.style.zIndex = "2147483646";
        innerElem.setAttribute('class', 'yui3-normalized');

        var wabiButton = createWidgetButton(innerElem);
        wabiButton.setAttribute('class', 'yui3-normalized');
        var wabiWindow = createWidgetWindow(innerElem);
        wabiWindow.setAttribute('class', 'yui3-normalized');
        wabiWidget.appendChild(innerElem);
        wabiWidget.setAttribute('data-wabi-inflated', 'true');
    }

    function createWidgetButton(wabiWidget) {
        var iframe = document.createElement('iframe');
        var scriptUrl = serverHost + '/widget/button?phone_number=' + phoneNumber;
        if (lang) {
            scriptUrl += '&lang=' + lang;
        }
        if (window.location.hostname) {
            scriptUrl += '&host=' + encodeURIComponent(window.location.hostname);
        }
        iframe.setAttribute('id', 'wabi-floating-button');
        iframe.setAttribute('src', scriptUrl);
        iframe.setAttribute('width', '80px');
        iframe.setAttribute('frameborder', '0');
        iframe.setAttribute('allowtransparency', 'true');
        iframe.setAttribute('allowfullscreen', 'true');
        iframe.setAttribute('scrolling', 'no');

        iframe.style.height = "80px";
        iframe.style.width = "80px";

        iframe.style.border = 'none';
        iframe.style.overflow = 'hidden';

        iframe.style.background = 'none';
        iframe.style.display = "none";
        iframe.style.padding = "0px";

        iframe.style.bottom = "18px";
        var margin = Util.isMobile() ? "4px" : "18px";
        if (position === 'left') {
            iframe.style.left = margin;
        } else {
            iframe.style.right = margin;
        }
        iframe.style.position = "fixed";
        iframe.style.top = "auto";
        iframe.style.zIndex = "2147483646";

        wabiWidget.appendChild(iframe);
        return iframe;
    }

    function createWidgetWindow(wabiWidget) {
        var isMobile = Util.isMobile();
        var iframe = document.createElement('iframe');
        var scriptUrl = serverHost + '/widget/window?phone_number=' + phoneNumber;
        if (lang) {
            scriptUrl += '&lang=' + lang;
        }
        iframe.setAttribute('id', 'wabi-window');
        iframe.setAttribute('src', scriptUrl);
        iframe.setAttribute('width', '80px');
        iframe.setAttribute('frameborder', '0');
        iframe.setAttribute('allowtransparency', 'true');
        iframe.setAttribute('allowfullscreen', 'true');
        iframe.setAttribute('scrolling', 'no');

        iframe.style.border = 'none';
        iframe.style.overflow = 'hidden';
        iframe.style.background = 'white';
        iframe.style.borderRadius = '9pt';
        iframe.style.bottom = "128px";
        var margin = isMobile ? "14px" : "28px";
        if (position === 'left') {
            iframe.style.left = margin;
        } else {
            iframe.style.right = margin;
        }
        iframe.style.boxShadow = "rgba(0, 0, 0, 0.15) 0px 3pt 12pt";
        iframe.style.width = "440px"; // min 340px
        if (lang === 'de') { // temp fix - need more space for de
            iframe.style.height = isMobile ? "370px" : "360px";
        } else {
            iframe.style.height = isMobile ? "360px" : "330px";
        }
        iframe.style.display = "none";
        iframe.style.opacity = '0';
        // if (DEBUG) {
        //     iframe.style.opacity = '1';
        //     iframe.style.display = "inline";
        // }
        iframe.style.transition = 'opacity 0.1s linear, height 0.1s linear, width 0.1s linear';
        iframe.style.padding = "0px";
        iframe.style.position = "fixed";
        iframe.style.top = "auto";
        iframe.style.zIndex = "2147483646";
        wabiWidget.appendChild(iframe);
        return iframe;
    }

    function logEvent(action, options) {
        // console.log('ga.event, action=' + action + ', options=' + (options ? JSON.stringify(options) : options));
        var opts = options || {};
        Object.assign(opts, {
            'send_to': gaId
        });
        wabi_gtag('event', action, opts);
    }

    function initGA() {
        wabi_gtag('js', new Date());
        wabi_gtag('config', gaId);
        window.addEventListener('message', function (e) {
            var command = e.data && e.data.command;
            if (command === 'log_event') {
                var action = e.data.action;
                if (!action) {
                    return;
                }
                logEvent(action, e.data.options);
            }
        });
    }

    function wabi_gtag() {
        window.dataLayer.push(arguments);
    }

    initGA();
    init();
}());