/**
 *
 *  Base64 encode / decode
 *  http://www.webtoolkit.info/
 *
 **/

var Base64 = {
    // private property
    _keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",

    // public method for encoding
    encode : function (input) {
        var output = "";
        var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
        var i = 0;

        input = Base64._utf8_encode(input);

        while (i < input.length) {

            chr1 = input.charCodeAt(i++);
            chr2 = input.charCodeAt(i++);
            chr3 = input.charCodeAt(i++);

            enc1 = chr1 >> 2;
            enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
            enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
            enc4 = chr3 & 63;

            if (isNaN(chr2)) {
                enc3 = enc4 = 64;
            } else if (isNaN(chr3)) {
                enc4 = 64;
            }

            output = output +
            this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
            this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);

        }

        return output;
    },

    // public method for decoding
    decode : function (input) {
        var output = "";
        var chr1, chr2, chr3;
        var enc1, enc2, enc3, enc4;
        var i = 0;

        input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

        while (i < input.length) {

            enc1 = this._keyStr.indexOf(input.charAt(i++));
            enc2 = this._keyStr.indexOf(input.charAt(i++));
            enc3 = this._keyStr.indexOf(input.charAt(i++));
            enc4 = this._keyStr.indexOf(input.charAt(i++));

            chr1 = (enc1 << 2) | (enc2 >> 4);
            chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
            chr3 = ((enc3 & 3) << 6) | enc4;

            output = output + String.fromCharCode(chr1);

            if (enc3 != 64) {
                output = output + String.fromCharCode(chr2);
            }
            if (enc4 != 64) {
                output = output + String.fromCharCode(chr3);
            }

        }

        output = Base64._utf8_decode(output);

        return output;

    },

    // private method for UTF-8 encoding
    _utf8_encode : function (string) {
        string = string.replace(/\\r\\n/g,"\\n");
        var utftext = "";

        for (var n = 0; n < string.length; n++) {

            var c = string.charCodeAt(n);

            if (c < 128) {
                utftext += String.fromCharCode(c);
            }
            else if((c > 127) && (c < 2048)) {
                utftext += String.fromCharCode((c >> 6) | 192);
                utftext += String.fromCharCode((c & 63) | 128);
            }
            else {
                utftext += String.fromCharCode((c >> 12) | 224);
                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                utftext += String.fromCharCode((c & 63) | 128);
            }

        }

        return utftext;
    },

    // private method for UTF-8 decoding
    _utf8_decode : function (utftext) {
        var string = "";
        var i = 0;
        var c = c1 = c2 = 0;

        while ( i < utftext.length ) {

            c = utftext.charCodeAt(i);

            if (c < 128) {
                string += String.fromCharCode(c);
                i++;
            }
            else if((c > 191) && (c < 224)) {
                c2 = utftext.charCodeAt(i+1);
                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                i += 2;
            }
            else {
                c2 = utftext.charCodeAt(i+1);
                c3 = utftext.charCodeAt(i+2);
                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                i += 3;
            }

        }

        return string;
    }

}

function findAndLoadPlayers() {
    /* Content protection */
    var url = window.location.href; // window.location.hostname;

    /* Get and loop through all players (var tags) */
    var allPlayers = document.getElementsByTagName("var");
    for (var i = 0; i < allPlayers.length; i++) loadNext(i);

    function loadNext(i){
        /* Which presentation are we loading? */
        curPresID = allPlayers[i].getAttribute('data-presentation');

        if (curPresID) {
            if (!allPlayers[i].getAttribute('data-loaded')) {
                /* Mark Var as Loaded (Prevents running again later) */
                allPlayers[i].setAttribute('data-loaded', 'true');

                /* Create iframe */
                var playerframe = document.createElement('iframe');

                /* Assign src to iframe */
                var sourceURL = Base64.encode(url).replace(/\=+$/, '').replace('/', '_');
                playerframe.setAttribute('src', 'https://share.rendia.com/whitelabel/load/'+sourceURL+'/'+curPresID);
                // hey can we just ajax some metadata? Also, no jquery, we have to use basic JS.
                var req = new XMLHttpRequest();
                req.responseType = 'json';
                req.open('GET', 'https://share.rendia.com/server/player/metadata/' + curPresID, true);
                req.onload  = function() {
                   var jsonResponse = req.response;
                   console.log('player metadata', jsonResponse);
                   if (jsonResponse.title != null) {
                     playerframe.setAttribute('title', jsonResponse.title);
                     playerframe.setAttribute('aria-label', jsonResponse.title);
                   }
                };
                req.send(null);
                // playerframe.setAttribute('itemscope', '');
                // playerframe.setAttribute('itemtype', 'http://schema.org/VideoObject');

                /* create schema.org meta tags */
                // var metaDescription = document.createElement('meta');
                // metaDescription.setAttribute('itemprop', 'description');
                // metaDescription.setAttribute('content', 'Video content for educating patients about their health.');
                // var metaName = document.createElement('meta');
                // metaName.setAttribute('itemprop', 'name');
                // metaName.setAttribute('content', 'Echo by Eyemaginations');
                // var metaThumb = document.createElement('meta');
                // metaThumb.setAttribute('itemprop', 'thumbnailUrl');
                // metaThumb.setAttribute('content', 'https://showecho.com');
                // var metaDate = document.createElement('meta');
                // metaDate.setAttribute('itemprop', 'uploadDate');
                // metaDate.setAttribute('content', '2016-01-01');

                /* Assign misc attributes to iframe */
                playerframe.setAttribute('frameBorder', 0);

                playerframe.setAttribute('title', 'Rendia Embed Player');
                playerframe.setAttribute('aria-label', 'Rendia Embed Player');

                playerframe.setAttribute('onload', 'this.style.visibility = "visible"');

                playerframe.setAttribute('scrolling', 'no');

                // playerframe.setAttribute('allow', 'autoplay');

                /* Create width and height for iframe */
                var width = document.createAttribute('width');
                var height = document.createAttribute('height');

                /* New players have a style tag on the <var> to take care of the sizing */
                varStyle = allPlayers[i].getAttribute('style');

                /* Old players used data-width on the <var> for responsiveness */
                var customWidth = allPlayers[i].getAttribute('data-width');

                /* Really old player or messed up player with no sizing, default to a size */
                if(!customWidth) customWidth = 648;

                /* Rather old player, use the data-width given */
                if(!varStyle){
                    width.nodeValue = customWidth;
                    playerframe.setAttributeNode(width);
                    height.nodeValue = (customWidth * 0.5625) + 4;
                    playerframe.setAttributeNode(height);
                    playerframe.style.border = "none";

                    /* And finally, append the iframe to the <var> */
                    allPlayers[i].appendChild(playerframe);
                } else { //New player, let the style tag handle it all
                    width.nodeValue = '100%';
                    playerframe.setAttributeNode(width);
                    height.nodeValue = '100%';
                    playerframe.setAttributeNode(height);

                    /* Style the <var> to be responsive - ADS updating for IE8 compatibility */
                    allPlayers[i].style.display = "block";

                    /* Create responsive div */
                    var playercontainer = document.createElement('div');
                    playercontainer.style.paddingBottom = "56.25%";
                    playercontainer.style.position = "relative";

                    /* Style the iframe to be responsive */
                    playerframe.style.position = "absolute";
                    playerframe.style.top = "0";
                    playerframe.style.left = "0";
                    playerframe.style.border = "none";
                    // playerframe.style.visibility = "hidden"; //Prevent white flash but also prevents placeholder background image
                    playerframe.style.background = "#F5F5F5 url('https://content.rendia.com/leo/rendia_embed_r.png') no-repeat center";

                    /* SEO Add links to theater page */
                    /* //DOESN'T HELP WITH SEO, MAKES BROKEN LINKS ANYWAY...
                        var seoLink = document.createElement('a');
                        var seoHREF = document.createAttribute('href');
                        var seoStyle = document.createAttribute('style');
                        seoHREF.nodeValue = document.location.origin + '/theater/' + curPresID;
                        seoStyle.nodeValue = 'display: none;';
                        seoLink.setAttributeNode(seoHREF);
                        seoLink.setAttributeNode(seoStyle);
                        seoLink.innerHTML = 'View this Video';
                        // playerframe.innerHTML = seoLink;
                        playercontainer.appendChild(seoLink);
                    */

                    /* And finally, append the iframe to a responsive <div> then to the <var> */
                    allPlayers[i].style.paddingBottom = '0'; //Ensure we remove the height fix from the embed code if it exists
                    allPlayers[i].appendChild(playercontainer);
                    playercontainer.appendChild(playerframe);
                    // playerframe.appendChild(metaDescription);
                    // playerframe.appendChild(metaName);
                    // playerframe.appendChild(metaThumb);
                    // playerframe.appendChild(metaDate);
                }
                // attach postMessage stuff so we can communicate to the iframe when on crossdomain (which is like, all the time)
                window.addEventListener('message', function(e) {
                    console.log('got message from child', e.data);
                    if (e.data === 'ready') {
                      console.log('posting url from parent');
                      playerframe.contentWindow.postMessage({rendia: true, url: sourceURL}, '*');
                    }
                }, false);
                // failed parent click in an attempt to get autoplay working
                // window.addEventListener('click', userGestured, false);
                //
                // function userGestured() {
                //   console.log('posting click from parent');
                //   playerframe.contentWindow.postMessage({rendiaclick: true}, '*');
                //   window.removeEventListener('click', userGestured);
                // }
            }
        }
    }
}

if (typeof pageLoadedAlready === 'undefined') {
    window.addEventListener ?
        window.addEventListener("load", findAndLoadPlayers, false) :
            window.attachEvent && window.attachEvent("onload", findAndLoadPlayers);

    var pageLoadedAlready = true;
} else findAndLoadPlayers();