var randomString = function(length, chars) {
    var result = '';

    for (var i = length; i > 0; --i) {
        result += chars[Math.round(Math.random() * (chars.length - 1))];
    }

    return result;
}

var JsonFormatter = {
    stringify: function (cipherParams) {
        var jsonObj = {
            ct: cipherParams.ciphertext.toString(CryptoJS.enc.Base64)
        };

        if (cipherParams.iv) {
            jsonObj.iv = cipherParams.iv.toString();
        }
        if (cipherParams.salt) {
            jsonObj.s = cipherParams.salt.toString();
        }

        return JSON.stringify(jsonObj);
    },

    parse: function (jsonStr) {
        var jsonObj = JSON.parse(jsonStr);
        var cipherParams = CryptoJS.lib.CipherParams.create({
            ciphertext: CryptoJS.enc.Base64.parse(jsonObj.ct)
        });

        if (jsonObj.iv) {
            cipherParams.iv = CryptoJS.enc.Hex.parse(jsonObj.iv)
        }
        if (jsonObj.s) {
            cipherParams.salt = CryptoJS.enc.Hex.parse(jsonObj.s)
        }

        return cipherParams;
    }
};

$(document).ready(function() {
    $('#adding-form')
        .attr('action', '/index.php')
        .bind(
            'submit',
            function() {
                if ($('#aes:checked').length) {
                    var passphrase = randomString(256, '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
                    var code       = $('#code').val();
                    var encrypted  = CryptoJS.AES.encrypt(code, passphrase, {format: JsonFormatter});
                    
                    $('#aes').val(passphrase);
                    $('#code').val(encrypted);
                }


                return true;
            }
        );

    $('#adding-language button').click(function() {
        $('#language').val($(this).val());
        $('#adding-language button').removeClass('btn-primary');
        $(this).addClass('btn-primary');

        if ($.inArray($(this).val(), ['html', 'xml', 'javascript', 'php']) !== -1) {
            $('#indent').show();
        } else {
            $('#indent').hide().find('input').removeAttr('checked');
        }
    });

    $('#adding-line button').click(function() {
        $('#line').val($(this).val());
        $('#adding-line button').removeClass('btn-primary');
        $(this).addClass('btn-primary');
    });

    var url     = document.location.href;
    var parts   = url.split('#aes=');
    var options = parts[0].split('/');

    if (parts.length === 2) {
        if (options[4] !== 'texte' || options[5] != '0') {
            options[4] = 'texte';
            options[5] = '0';

            parts[0] = options.join('/');
            document.location.href = parts.join('#aes=');
        }

		$('#options .btn:not(#new)').hide();
		$('#new').css('margin-left', -17);
        var decrypted = CryptoJS.AES.decrypt($('#wall > pre').html(), parts[1], {format: JsonFormatter});
        $('#wall > pre').text(decrypted.toString(CryptoJS.enc.Utf8));
    }
});