function convert(input) {
    alert('Error.  Contact us if this keeps happening.');
    document.getElementById('modal-contact').classList.add('show');
    }







    function _ctCaesarShift() {
        var el = document.getElementById('caesar-shift');
        var v = el ? parseInt(el.value, 10) : 3;
        if (!isFinite(v)) v = 3;
        v = ((v % 26) + 26) % 26;
        return v;
    }

    function convert(input) {
        var shift = _ctCaesarShift();
        if (!input) return '';
        var out = '';
        for (var i = 0; i < input.length; i++) {
            var c = input.charCodeAt(i);
            if (c >= 65 && c <= 90) {
                out += String.fromCharCode((c - 65 + shift) % 26 + 65);
            } else if (c >= 97 && c <= 122) {
                out += String.fromCharCode((c - 97 + shift) % 26 + 97);
            } else {
                out += input.charAt(i);
            }
        }
        return out;
    }

    $(function(){
        var slider = document.getElementById('caesar-shift');
        var label  = document.getElementById('caesar-shift-label');
        function refresh() {
            if (label && slider) label.textContent = slider.value;
            $('#box1').trigger('keyup');
        }
        if (slider) slider.addEventListener('input', refresh);
        $('#caesar-decode').on('click', function(){
            if (!slider) return;
            var v = parseInt(slider.value, 10) || 0;
            slider.value = String(((26 - (v % 26)) % 26));
            refresh();
        });
        $('.caesar-preset').on('click', function(){
            if (!slider) return;
            slider.value = $(this).data('shift');
            refresh();
        });
        refresh();
    });



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;

}