var bwc_token = "demo";
var bwc_bug_report_text;
var bwc_latest_javascript_error = "None";
var bwc_html2canvas_version = "0.4.1"; //Options: ["0.4.1", "1.0.0"]

function bwc_submit_bug_button_click() {
    bwc_bug_report_text = prompt("Description of Bug/Feedback:", "");
    if(!bwc_bug_report_text) {
        return;
    }
    $('#bwc_submit_bug').val('Saving...');
    btc_triggerhtml2canvas();
}

function bwc_add_button() {
    var r = $('<input/>').attr({
                 type: "button",
                 id: "bwc_submit_bug",
                 value: "Submit Bug",
                 "data-html2canvas-ignore": "1",
                 onclick: "bwc_submit_bug_button_click()"
            }).css({
                "position": "fixed",
                "right": "15px",
                "bottom": "15px",
                "z-index": "99999",
                "background": "#f0f0f0",
                "border-radius": ".25rem",
                "border": "1px solid #aaa",
            });

    $("body").append(r);
}

function btc_processcanvas(canvas) {
    canvas.toBlob(
        function(blob){
            var jform = new FormData();

            var bwc_specs = bwc_get_specs();
            var card_description = `
**User Note:** ${bwc_bug_report_text}\n
-----------------
**URL:** ${window.location.href}\n
**OS:** ${bwc_specs.os} ${bwc_specs.osVersion}\n
**Browser:** ${bwc_specs.browser} ${bwc_specs.browserMajorVersion} (${bwc_specs.browserVersion})\n
**Screen Size:** ${bwc_specs.screen}\n
**IP:** {IP}\n
-----------------
**Last Javascript Error:** \n ${bwc_latest_javascript_error}
`;

            var card_title = (new Date()).toString()+"\n"+bwc_bug_report_text.substring(0,20)+"...";

            jform.append('card_description', card_description);
            jform.append('card_title', card_title);
            jform.append("screencap", blob, "screencap.png");
            jform.append('bwc_token', bwc_token);

            $.ajax({
                url: 'https://bugswithcontext.com/index.php?act=new',
                type: 'POST',
                data: jform,
                dataType: 'json',
                mimeType: 'multipart/form-data', // this too
                contentType: false,
                cache: false,
                processData: false,
                success: function(data, status, jqXHR){
                    $('#bwc_submit_bug').val('Saved!');
                    setTimeout(function(){
                        $('#bwc_submit_bug').val('Submit Bug');
                    }, 3000);
                },
                error: function(jqXHR,status,error){
                    //Errors out due to cross origin, but we don't really care
                    $('#bwc_submit_bug').val('Saved!');
                    setTimeout(function(){
                        $('#bwc_submit_bug').val('Submit Bug');
                    }, 3000);
                }
            });
        },
        'image/png'
    );
}

function btc_triggerhtml2canvas() {
    if(bwc_html2canvas_version == "0.4.1") {
        html2canvas($(document.body), {
            //proxy: "html2canvasproxy.php",
    		onrendered: function(canvas) {
                btc_processcanvas(canvas);
            }

        });
    }
    else { //version = 1.0.0
        html2canvas(document.body, {
            //"proxy": "html2canvasproxy.php"
        }).then(function(canvas) {
            btc_processcanvas(canvas);
        });
    }
}


function bwc_inject_jquery() {

    if(!window.jQuery) {
      var head = document.getElementsByTagName("head")[0];
      var script = document.createElement("script");
      script.src = "//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js";
      script.onload = function() {
          bwc_inject_html2canvas();
          bwc_jquery_loaded();
      };
      head.appendChild(script);
    }
    else {
        bwc_inject_html2canvas();
        bwc_jquery_loaded();
    }
}

function bwc_jquery_loaded() {
    bwc_add_button();
}

function bwc_inject_html2canvas() {
  var head = document.getElementsByTagName("head")[0];
  var script = document.createElement("script");
    if(bwc_html2canvas_version == "0.4.1") {
        script.src = "//cdnjs.cloudflare.com/ajax/libs/html2canvas/0.4.1/html2canvas.min.js";
    }
    else { //1.0.0
        //script.src = "//bugswithcontext.com/js/html2canvas_v_1_0_0_rc5.min.js";
        script.src = "//html2canvas.hertzen.com/dist/html2canvas.js";
    }
    head.appendChild(script);
}


/**
 * JavaScript Client Detection
 * (C) viazenetti GmbH (Christian Ludwig)
 */
function bwc_get_specs() {
    var unknown = '-';

    // screen
    var screenSize = '';
    if (screen.width) {
        width = (screen.width) ? screen.width : '';
        height = (screen.height) ? screen.height : '';
        screenSize += '' + width + " x " + height;
    }

    // browser
    var nVer = navigator.appVersion;
    var nAgt = navigator.userAgent;
    var browser = navigator.appName;
    var version = '' + parseFloat(navigator.appVersion);
    var majorVersion = parseInt(navigator.appVersion, 10);
    var nameOffset, verOffset, ix;

    // Opera
    if ((verOffset = nAgt.indexOf('Opera')) != -1) {
        browser = 'Opera';
        version = nAgt.substring(verOffset + 6);
        if ((verOffset = nAgt.indexOf('Version')) != -1) {
            version = nAgt.substring(verOffset + 8);
        }
    }
    // Opera Next
    if ((verOffset = nAgt.indexOf('OPR')) != -1) {
        browser = 'Opera';
        version = nAgt.substring(verOffset + 4);
    }
    // Edge
    else if ((verOffset = nAgt.indexOf('Edge')) != -1) {
        browser = 'Microsoft Edge';
        version = nAgt.substring(verOffset + 5);
    }
    // MSIE
    else if ((verOffset = nAgt.indexOf('MSIE')) != -1) {
        browser = 'Microsoft Internet Explorer';
        version = nAgt.substring(verOffset + 5);
    }
    // Chrome
    else if ((verOffset = nAgt.indexOf('Chrome')) != -1) {
        browser = 'Chrome';
        version = nAgt.substring(verOffset + 7);
    }
    // Safari
    else if ((verOffset = nAgt.indexOf('Safari')) != -1) {
        browser = 'Safari';
        version = nAgt.substring(verOffset + 7);
        if ((verOffset = nAgt.indexOf('Version')) != -1) {
            version = nAgt.substring(verOffset + 8);
        }
    }
    // Firefox
    else if ((verOffset = nAgt.indexOf('Firefox')) != -1) {
        browser = 'Firefox';
        version = nAgt.substring(verOffset + 8);
    }
    // MSIE 11+
    else if (nAgt.indexOf('Trident/') != -1) {
        browser = 'Microsoft Internet Explorer';
        version = nAgt.substring(nAgt.indexOf('rv:') + 3);
    }
    // Other browsers
    else if ((nameOffset = nAgt.lastIndexOf(' ') + 1) < (verOffset = nAgt.lastIndexOf('/'))) {
        browser = nAgt.substring(nameOffset, verOffset);
        version = nAgt.substring(verOffset + 1);
        if (browser.toLowerCase() == browser.toUpperCase()) {
            browser = navigator.appName;
        }
    }
    // trim the version string
    if ((ix = version.indexOf(';')) != -1) version = version.substring(0, ix);
    if ((ix = version.indexOf(' ')) != -1) version = version.substring(0, ix);
    if ((ix = version.indexOf(')')) != -1) version = version.substring(0, ix);

    majorVersion = parseInt('' + version, 10);
    if (isNaN(majorVersion)) {
        version = '' + parseFloat(navigator.appVersion);
        majorVersion = parseInt(navigator.appVersion, 10);
    }

    // mobile version
    var mobile = /Mobile|mini|Fennec|Android|iP(ad|od|hone)/.test(nVer);

    // cookie
    var cookieEnabled = (navigator.cookieEnabled) ? true : false;

    if (typeof navigator.cookieEnabled == 'undefined' && !cookieEnabled) {
        document.cookie = 'testcookie';
        cookieEnabled = (document.cookie.indexOf('testcookie') != -1) ? true : false;
    }

    // system
    var os = unknown;
    var clientStrings = [
        {s:'Windows 10', r:/(Windows 10.0|Windows NT 10.0)/},
        {s:'Windows 8.1', r:/(Windows 8.1|Windows NT 6.3)/},
        {s:'Windows 8', r:/(Windows 8|Windows NT 6.2)/},
        {s:'Windows 7', r:/(Windows 7|Windows NT 6.1)/},
        {s:'Windows Vista', r:/Windows NT 6.0/},
        {s:'Windows Server 2003', r:/Windows NT 5.2/},
        {s:'Windows XP', r:/(Windows NT 5.1|Windows XP)/},
        {s:'Windows 2000', r:/(Windows NT 5.0|Windows 2000)/},
        {s:'Windows ME', r:/(Win 9x 4.90|Windows ME)/},
        {s:'Windows 98', r:/(Windows 98|Win98)/},
        {s:'Windows 95', r:/(Windows 95|Win95|Windows_95)/},
        {s:'Windows NT 4.0', r:/(Windows NT 4.0|WinNT4.0|WinNT|Windows NT)/},
        {s:'Windows CE', r:/Windows CE/},
        {s:'Windows 3.11', r:/Win16/},
        {s:'Android', r:/Android/},
        {s:'Open BSD', r:/OpenBSD/},
        {s:'Sun OS', r:/SunOS/},
        {s:'Chrome OS', r:/CrOS/},
        {s:'Linux', r:/(Linux|X11(?!.*CrOS))/},
        {s:'iOS', r:/(iPhone|iPad|iPod)/},
        {s:'Mac OS X', r:/Mac OS X/},
        {s:'Mac OS', r:/(MacPPC|MacIntel|Mac_PowerPC|Macintosh)/},
        {s:'QNX', r:/QNX/},
        {s:'UNIX', r:/UNIX/},
        {s:'BeOS', r:/BeOS/},
        {s:'OS/2', r:/OS\/2/},
        {s:'Search Bot', r:/(nuhk|Googlebot|Yammybot|Openbot|Slurp|MSNBot|Ask Jeeves\/Teoma|ia_archiver)/}
    ];
    for (var id in clientStrings) {
        var cs = clientStrings[id];
        if (cs.r.test(nAgt)) {
            os = cs.s;
            break;
        }
    }

    var osVersion = unknown;

    if (/Windows/.test(os)) {
        osVersion = /Windows (.*)/.exec(os)[1];
        os = 'Windows';
    }

    switch (os) {
        case 'Mac OS X':
            osVersion = /Mac OS X (10[\.\_\d]+)/.exec(nAgt)[1];
            break;

        case 'Android':
            osVersion = /Android ([\.\_\d]+)/.exec(nAgt)[1];
            break;

        case 'iOS':
            osVersion = /OS (\d+)_(\d+)_?(\d+)?/.exec(nVer);
            osVersion = osVersion[1] + '.' + osVersion[2] + '.' + (osVersion[3] | 0);
            break;
    }

    // flash (you'll need to include swfobject)
    /* script src="//ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js" */
    var flashVersion = 'no check';
    if (typeof swfobject != 'undefined') {
        var fv = swfobject.getFlashPlayerVersion();
        if (fv.major > 0) {
            flashVersion = fv.major + '.' + fv.minor + ' r' + fv.release;
        }
        else  {
            flashVersion = unknown;
        }
    }

    return {
        screen: screenSize,
        browser: browser,
        browserVersion: version,
        browserMajorVersion: majorVersion,
        mobile: mobile,
        os: os,
        osVersion: osVersion,
        cookies: cookieEnabled,
        flashVersion: flashVersion
    };
}

window.onerror = function (msg, url, lineNo, columnNo, error) {
  try {
      bwc_latest_javascript_error = error.stack;
  }
  catch(err) {
      //do nothing
  }
  if(!bwc_latest_javascript_error || bwc_latest_javascript_error == "None") {
      bwc_latest_javascript_error = msg + " \n at" + url + ":" + lineNo + ":" + columnNo;
  }
  return false;
}

bwc_inject_jquery();