(function () {

    var identityDecoder = function (src) {
        return src;
    };

    var mapDecoder = function (src) {
        var map   = {};
        var lines = src.split(/\n/);

        $.each(lines, function () {
            var m = this.match(/^(\S+)\s+(\S+)$/);

            map[ m[1] ] = m[2];
        });

        return map;
    };

    var boolDecoder = function (src) {
        return src == "*";
    };

    var decoder_of = {
        siteName   : identityDecoder,
        baseURI    : identityDecoder,
        defaultPage: identityDecoder,
        styleSheet : identityDecoder,
        languages  : mapDecoder,
        globalLock : boolDecoder
    };

    var cachedConf = null;

    Rakka.getSystemConfig = function () {
        if (cachedConf != null) {
            return cachedConf;
        }

        var conf = {};
        cachedConf = conf;

        $.ajax({
            type   : "GET",
            url    : Rakka.baseURI + "systemConfig",
            async  : false,
            success: function (xml) {
                $(xml).find("value").each(function () {
                    var path    = this.getAttribute("path");
                    var decoder = decoder_of[path];

                    if (decoder == null) {
                        throw new Error("unknown config path: " + path);
                    }
                    else {
                        conf[path] = decoder($(this).text());
                    }
                });
            },
            error  : function (req) {
                throw new Error(req.status + " " + req.statusText);
            }
        });

        return conf;
    };

    $(document).ready(function () {
        $("input.configButton")
            .click(function () {
                       Rakka.showConfigPanel();
                   });
    });

})();