function _ctImg2B64Mime(name) {
        var ext = (name || '').toLowerCase().split('.').pop();
        switch (ext) {
            case 'jpg': case 'jpeg': return 'image/jpeg';
            case 'png':  return 'image/png';
            case 'gif':  return 'image/gif';
            case 'webp': return 'image/webp';
            case 'bmp':  return 'image/bmp';
            case 'svg':  return 'image/svg+xml';
            case 'ico':  return 'image/x-icon';
            default:     return '';
        }
    }

    function processFile(blob, fileName) {
        var reader = new FileReader();
        reader.onload = function(e) {
            var dataUri = e.target.result;
            var mime = (blob && blob.type) || _ctImg2B64Mime(fileName);
            if (mime && dataUri.indexOf('data:application/octet-stream') === 0) {
                dataUri = 'data:' + mime + ';base64,' + dataUri.split(',')[1];
            }
            var taOut = document.getElementById('b64-output');
            var sizeOut = document.getElementById('b64-size');
            var previewImg = document.getElementById('b64-preview');
            var wrap = document.getElementById('b64-wrap');
            if (taOut) taOut.value = dataUri;
            if (sizeOut) {
                sizeOut.textContent = 'Base64 string: ' + dataUri.length.toLocaleString()
                    + ' chars  •  Original file: ' + (blob.size || 0).toLocaleString() + ' bytes';
            }
            if (previewImg) {
                previewImg.src = dataUri;
                previewImg.style.display = '';
            }
            if (wrap) wrap.style.display = '';
            $('#waiting').hide();
            $('#social').fadeIn(2000);
        };
        reader.onerror = function() {
            $('#waiting').hide();
            alert('Could not read this file.');
        };
        reader.readAsDataURL(blob);
    }

    function _ctB64Copy() {
        var ta = document.getElementById('b64-output');
        if (!ta) return;
        ta.select();
        try {
            if (navigator.clipboard && navigator.clipboard.writeText) {
                navigator.clipboard.writeText(ta.value);
            } else {
                document.execCommand('copy');
            }
            var btn = document.getElementById('b64-copy');
            if (btn) {
                var orig = btn.textContent;
                btn.textContent = 'Copied!';
                setTimeout(function(){ btn.textContent = orig; }, 1200);
            }
        } catch (e) {}
    }







var _loadedScripts = {};
function loadScriptPromise(url) {
    if (_loadedScripts[url]) return _loadedScripts[url];
    _loadedScripts[url] = new Promise(function (resolve, reject) {
        var s = document.createElement('script');
        s.src = url;
        s.onload = resolve;
        s.onerror = reject;
        document.head.appendChild(s);
    });
    return _loadedScripts[url];
}

function replaceAll(find, replace, str) {
    return str.replace(new RegExp(find, 'g'), replace);
}

function beautify(str) {


    var result = '';

    var length = str.length;

    var i = 0;

    var braceCountLeft = 0;
    var braceCountRight = 0;

    var withinQuotes = false;

    while (i < length) {

        var c = str[i];

        if (c == '"' && (i == 0 || c[i - 1] != '\\')) {
            // non-escaped quotes
            withinQuotes = !withinQuotes;
        }

        if (!withinQuotes && (c == '}' || c == '{' || c == ',')) {

            console.log('Start####' + result);

            // look back and remove carriage returns and whitespace that are already there

            var resultIndex = result.length - 1;
            while (resultIndex >= 0 && (result[resultIndex] == ' ' || result[resultIndex] == '\r' || result[resultIndex] == '\n' || result[resultIndex] == '\t')) {

                resultIndex = resultIndex - 1;
                result = result.substr(0, resultIndex + 1);

                console.log('char ' + result[resultIndex] + '-----' + result + 'zzz ' + result.length + ' ' + resultIndex);

            }


            if (c == '{') {
                braceCountLeft++;
                result += c + '\r' + GetTabs(braceCountLeft - braceCountRight);
            } else if (c == '}') {
                braceCountRight++;
                // precede with carriage return
                result += '\r' + GetTabs(braceCountLeft - braceCountRight) + c;
            } else if (c == ',') {
                result += c + '\r' + GetTabs(braceCountLeft - braceCountRight);
            }

            var nextChar = '';

            // advance through whitespace and remove carriage returns that are already there
            while (i < length && (str[i + 1] == ' ' || str[i + 1] == '\r' || str[i + 1] == '\n' || str[i + 1] == '\t')) {
                i++;
            }

        } else {

            result += str[i];

        }


        i++;

    }

    return result;

}

function GetTabs(count) {

    var result = '';

    for (var i = 0; i < count; i++) {
        result += '    ';
    }

    return result;

}