/**
* jQuery dotNet Plugin - http://code.google.com/p/jquerydotnetplugin/
* Copyright (c) 2008 Walter Poch (http://wpoch.com.ar || http://wpoch.wordpress.com)
* Licensed under the GPL (http://www.gnu.org/copyleft/gpl.html) license.
*
* $Date: 2008-09-05
*
* $Date: 2009-03-13 by bigsan.chen@gmail.com
*    (^) remove evalJSON helper method, because jQuery will return json object itself.
*    (+) add serialize function detection. Now we can call service like this: $.callDotNet(urlMethod, jsonData, onSuccess);
*
* $Date: 2009-03-26 by bigsan.chen@gmail.com
*    (^) data parameter becomes a must, so the function signature is now function(url, data, onSuccess, onFailure, userContext).
*          and the signatures of onSuccess, onFailure becomes function(result, userContext, methodName)
*/
// Plugin definition
(function($) {
     // Plugin implementation
     $.callDotNet = function(url, data, onSuccess, onFailure, userContext) {
           // Helper method
           var serialize = function(object) {
                if (typeof (object) == "string" || object == null) return object;

                var f = (window["Sys"] && Sys.Serialization && Sys.Serialization.JavaScriptSerializer.serialize) || (window["JSON"] && JSON.stringify);
                if ($.isFunction(f)) {
                     return f(object);
                }
                else {
                     var msg = "Cannot find serializer function, try the following solution:\n\n";
                     msg += " 1. Make sure there is a ScriptManger server control on your page, or\n";
                     msg += " 2. get JSON javascript from http://www.json.org/js.html, or\n";
                     msg += " 3. pass in manually serialized string type data parameter.\n";
                     throw new Error(-1, msg);
                }
           }

           data = serialize(data);
           //var methodName = /[^/]+$/.exec(url)[0];
           var methodName = new RegExp("[^/]+$").exec(url)[0];

           return $.ajax({
                type: "POST",
                url: url,
                data: data,
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: function(msg) {
                     return onSuccess(msg.d, userContext, methodName);
                },
                error: function(error) {
                     var f = onFailure || $.callDotNet.onError;
                     f(error, userContext, methodName);
                }
           });
     }

     // Default implementation of the error function
     $.callDotNet.onError = function(error) {
           alert("There was an error processing your request.\n"
                    + "[" + error.status + "]"
                    + " [" + error.statusText + "]");
     }
})(jQuery);