/*!

 * MockJax - jQuery Plugin to Mock Ajax requests

 *

 * Version:  1.5.0pre

 * Released:

 * Home:   http://github.com/appendto/jquery-mockjax

 * Author:   Jonathan Sharp (http://jdsharp.com)

 * License:  MIT,GPL

 *

 * Copyright (c) 2011 appendTo LLC.

 * Dual licensed under the MIT or GPL licenses.

 * http://appendto.com/open-source-licenses

 */

(function($) {

	var _ajax = $.ajax,

		mockHandlers = [],

		CALLBACK_REGEX = /=\?(&|$)/, 

		jsc = (new Date()).getTime();



	

	// Parse the given XML string. 

	function parseXML(xml) {

		if ( window['DOMParser'] == undefined && window.ActiveXObject ) {

			DOMParser = function() { };

			DOMParser.prototype.parseFromString = function( xmlString ) {

				var doc = new ActiveXObject('Microsoft.XMLDOM');

				doc.async = 'false';

				doc.loadXML( xmlString );

				return doc;

			};

		}



		try {

			var xmlDoc 	= ( new DOMParser() ).parseFromString( xml, 'text/xml' );

			if ( $.isXMLDoc( xmlDoc ) ) {

				var err = $('parsererror', xmlDoc);

				if ( err.length == 1 ) {

					throw('Error: ' + $(xmlDoc).text() );

				}

			} else {

				throw('Unable to parse XML');

			}

		} catch( e ) {

			var msg = ( e.name == undefined ? e : e.name + ': ' + e.message );

			$(document).trigger('xmlParseError', [ msg ]);

			return undefined;

		}

		return xmlDoc;

	}



	// Trigger a jQuery event

	function trigger(s, type, args) {

		(s.context ? jQuery(s.context) : jQuery.event).trigger(type, args);

	}



	// Check if the data field on the mock handler and the request match. This 

	// can be used to restrict a mock handler to being used only when a certain

	// set of data is passed to it.

	function isMockDataEqual( mock, live ) {

		var identical = false;

		// Test for situations where the data is a querystring (not an object)

		if (typeof live === 'string') {

			// Querystring may be a regex

			return $.isFunction( mock.test ) ? mock.test(live) : mock == live;

		}

		$.each(mock, function(k, v) {

			if ( live[k] === undefined ) {

				identical = false;

				return identical;

			} else {

				identical = true;

				if ( typeof live[k] == 'object' ) {

					return isMockDataEqual(mock[k], live[k]);

				} else {

					if ( $.isFunction( mock[k].test ) ) {

						identical = mock[k].test(live[k]);

					} else {

						identical = ( mock[k] == live[k] );

					}

					return identical;

				}

			}

		});



		return identical;

	}



	// Check the given handler should mock the given request

	function getMockForRequest( handler, requestSettings ) {

		// If the mock was registered with a function, let the function decide if we

		// want to mock this request

		if ( $.isFunction(handler) ) {

			return handler( requestSettings );

		}



		// Inspect the URL of the request and check if the mock handler's url

		// matches the url for this ajax request

		if ( $.isFunction(handler.url.test) ) {

			// The user provided a regex for the url, test it

			if ( !handler.url.test( requestSettings.url ) ) {

				return null;

			}

		} else {

			// Look for a simple wildcard '*' or a direct URL match

			var star = handler.url.indexOf('*');

			if (handler.url !== requestSettings.url && star === -1 || 

					!new RegExp(handler.url.replace(/[-[\]{}()+?.,\\^$|#\s]/g, "\\$&").replace('*', '.+')).test(requestSettings.url)) {

				return null;

			}

		}



		// Inspect the data submitted in the request (either POST body or GET query string)

		if ( handler.data && requestSettings.data ) {

			if ( !isMockDataEqual(handler.data, requestSettings.data) ) {

				// They're not identical, do not mock this request

				return null;

			}

		}

		// Inspect the request type

		if ( handler && handler.type && 

				 handler.type.toLowerCase() != requestSettings.type.toLowerCase() ) {

			// The request type doesn't match (GET vs. POST)

			return null;

		}



		return handler;

	}



	// If logging is enabled, log the mock to the console

	function logMock( mockHandler, requestSettings ) {

		var c = $.extend({}, $.mockjaxSettings, mockHandler);

		if ( c.log && $.isFunction(c.log) ) {

			c.log('MOCK ' + requestSettings.type.toUpperCase() + ': ' + requestSettings.url, $.extend({}, requestSettings));

		}

	}



	// Process the xhr objects send operation

	function _xhrSend(mockHandler, requestSettings, origSettings) {



		// This is a substitute for < 1.4 which lacks $.proxy

		var process = (function(that) {

			return function() {

				return (function() {

					// The request has returned

					this.status 		= mockHandler.status;

					this.statusText		= mockHandler.statusText;

					this.readyState 	= 4;



					// We have an executable function, call it to give

					// the mock handler a chance to update it's data

					if ( $.isFunction(mockHandler.response) ) {

						mockHandler.response(origSettings);

					}

					// Copy over our mock to our xhr object before passing control back to

					// jQuery's onreadystatechange callback

					if ( requestSettings.dataType == 'json' && ( typeof mockHandler.responseText == 'object' ) ) {

						this.responseText = JSON.stringify(mockHandler.responseText);

					} else if ( requestSettings.dataType == 'xml' ) {

						if ( typeof mockHandler.responseXML == 'string' ) {

							this.responseXML = parseXML(mockHandler.responseXML);

						} else {

							this.responseXML = mockHandler.responseXML;

						}

					} else {

						this.responseText = mockHandler.responseText;

					}

					if( typeof mockHandler.status == 'number' || typeof mockHandler.status == 'string' ) {

						this.status = mockHandler.status;

					}

					if( typeof mockHandler.statusText === "string") {

						this.statusText = mockHandler.statusText;

					}

					// jQuery < 1.4 doesn't have onreadystate change for xhr

					if ( $.isFunction(this.onreadystatechange) ) {

						if( mockHandler.isTimeout) {

							this.status = -1;

						}

						this.onreadystatechange( mockHandler.isTimeout ? 'timeout' : undefined );

					} else if ( mockHandler.isTimeout ) {

						// Fix for 1.3.2 timeout to keep success from firing.

						this.status = -1;

					}

				}).apply(that);

			};

		})(this);



		if ( mockHandler.proxy ) {

			// We're proxying this request and loading in an external file instead

			_ajax({

				global: false,

				url: mockHandler.proxy,

				type: mockHandler.proxyType,

				data: mockHandler.data,

				dataType: requestSettings.dataType === "script" ? "text/plain" : requestSettings.dataType,

				complete: function(xhr, txt) {

					mockHandler.responseXML = xhr.responseXML;

					mockHandler.responseText = xhr.responseText;

					mockHandler.status = xhr.status;

					mockHandler.statusText = xhr.statusText;

					this.responseTimer = setTimeout(process, mockHandler.responseTime || 0);

				}

			});

		} else {

			// type == 'POST' || 'GET' || 'DELETE'

			if ( requestSettings.async === false ) {

				// TODO: Blocking delay

				process();

			} else {

				this.responseTimer = setTimeout(process, mockHandler.responseTime || 50);

			}

		}

	}



	// Construct a mocked XHR Object

	function xhr(mockHandler, requestSettings, origSettings, origHandler) {

		// Extend with our default mockjax settings

		mockHandler = $.extend({}, $.mockjaxSettings, mockHandler);



		if (typeof mockHandler.headers === 'undefined') {

			mockHandler.headers = {};

		}

		if ( mockHandler.contentType ) {

			mockHandler.headers['content-type'] = mockHandler.contentType;

		}



		return {

			status: mockHandler.status,

			statusText: mockHandler.statusText,

			readyState: 1,

			open: function() { },

			send: function() {

				origHandler.fired = true;

				_xhrSend.call(this, mockHandler, requestSettings, origSettings);

			},

			abort: function() {

				clearTimeout(this.responseTimer);

			},

			setRequestHeader: function(header, value) {

				mockHandler.headers[header] = value;

			},

			getResponseHeader: function(header) {

				// 'Last-modified', 'Etag', 'content-type' are all checked by jQuery

				if ( mockHandler.headers && mockHandler.headers[header] ) {

					// Return arbitrary headers

					return mockHandler.headers[header];

				} else if ( header.toLowerCase() == 'last-modified' ) {

					return mockHandler.lastModified || (new Date()).toString();

				} else if ( header.toLowerCase() == 'etag' ) {

					return mockHandler.etag || '';

				} else if ( header.toLowerCase() == 'content-type' ) {

					return mockHandler.contentType || 'text/plain';

				}

			},

			getAllResponseHeaders: function() {

				var headers = '';

				$.each(mockHandler.headers, function(k, v) {

					headers += k + ': ' + v + "\n";

				});

				return headers;

			}

		};

	}



	// Process a JSONP mock request.

	function processJsonpMock( requestSettings, mockHandler, origSettings ) {

		// Handle JSONP Parameter Callbacks, we need to replicate some of the jQuery core here

		// because there isn't an easy hook for the cross domain script tag of jsonp



		processJsonpUrl( requestSettings );



		requestSettings.dataType = "json";

		if(requestSettings.data && CALLBACK_REGEX.test(requestSettings.data) || CALLBACK_REGEX.test(requestSettings.url)) {

			createJsonpCallback(requestSettings, mockHandler);



			// We need to make sure

			// that a JSONP style response is executed properly



			var rurl = /^(\w+:)?\/\/([^\/?#]+)/,

				parts = rurl.exec( requestSettings.url ),

				remote = parts && (parts[1] && parts[1] !== location.protocol || parts[2] !== location.host);



			requestSettings.dataType = "script";

			if(requestSettings.type.toUpperCase() === "GET" && remote ) {

				var newMockReturn = processJsonpRequest( requestSettings, mockHandler, origSettings );



				// Check if we are supposed to return a Deferred back to the mock call, or just 

				// signal success

				if(newMockReturn) {

					return newMockReturn;

				} else {

					return true;

				}

			}

		}

		return null;

	}



	// Append the required callback parameter to the end of the request URL, for a JSONP request

	function processJsonpUrl( requestSettings ) {

		if ( requestSettings.type.toUpperCase() === "GET" ) {

			if ( !CALLBACK_REGEX.test( requestSettings.url ) ) {

				requestSettings.url += (/\?/.test( requestSettings.url ) ? "&" : "?") + 

					(requestSettings.jsonp || "callback") + "=?";

			}

		} else if ( !requestSettings.data || !CALLBACK_REGEX.test(requestSettings.data) ) {

			requestSettings.data = (requestSettings.data ? requestSettings.data + "&" : "") + (requestSettings.jsonp || "callback") + "=?";

		}

	}

	

	// Process a JSONP request by evaluating the mocked response text

	function processJsonpRequest( requestSettings, mockHandler, origSettings ) {

		// Synthesize the mock request for adding a script tag

		var callbackContext = origSettings && origSettings.context || requestSettings,

			newMock = null;





		// If the response handler on the moock is a function, call it

		if ( mockHandler.response && $.isFunction(mockHandler.response) ) {

			mockHandler.response(origSettings);

		} else {



			// Evaluate the responseText javascript in a global context

			if( typeof mockHandler.responseText === 'object' ) {

				$.globalEval( '(' + JSON.stringify( mockHandler.responseText ) + ')');

			} else {

				$.globalEval( '(' + mockHandler.responseText + ')');

			}

		}



		// Successful response

		jsonpSuccess( requestSettings, mockHandler );

		jsonpComplete( requestSettings, mockHandler );



		// If we are running under jQuery 1.5+, return a deferred object

		if(jQuery.Deferred){

			newMock = new jQuery.Deferred();

			if(typeof mockHandler.responseText == "object"){

				newMock.resolve( mockHandler.responseText );

			}

			else{

				newMock.resolve( jQuery.parseJSON( mockHandler.responseText ) );

			}

		}

		return newMock;

	}





	// Create the required JSONP callback function for the request

	function createJsonpCallback( requestSettings, mockHandler ) {

		jsonp = requestSettings.jsonpCallback || ("jsonp" + jsc++);



		// Replace the =? sequence both in the query string and the data

		if ( requestSettings.data ) {

			requestSettings.data = (requestSettings.data + "").replace(CALLBACK_REGEX, "=" + jsonp + "$1");

		}



		requestSettings.url = requestSettings.url.replace(CALLBACK_REGEX, "=" + jsonp + "$1");





		// Handle JSONP-style loading

		window[ jsonp ] = window[ jsonp ] || function( tmp ) {

			data = tmp;

			jsonpSuccess( requestSettings, mockHandler );

			jsonpComplete( requestSettings, mockHandler );

			// Garbage collect

			window[ jsonp ] = undefined;



			try {

				delete window[ jsonp ];

			} catch(e) {}



			if ( head ) {

				head.removeChild( script );

			}

		};

	}



	// The JSONP request was successful

	function jsonpSuccess(requestSettings, mockHandler) {

		// If a local callback was specified, fire it and pass it the data

		if ( requestSettings.success ) {

			requestSettings.success.call( callbackContext, ( mockHandler.response ? mockHandler.response.toString() : mockHandler.responseText || ''), status, {} );

		}



		// Fire the global callback

		if ( requestSettings.global ) {

			trigger(requestSettings, "ajaxSuccess", [{}, requestSettings] );

		}

	}



	// The JSONP request was completed

	function jsonpComplete(requestSettings, mockHandler) {

		// Process result

		if ( requestSettings.complete ) {

			requestSettings.complete.call( callbackContext, {} , status );

		}



		// The request was completed

		if ( requestSettings.global ) {

			trigger( "ajaxComplete", [{}, requestSettings] );

		}



		// Handle the global AJAX counter

		if ( requestSettings.global && ! --jQuery.active ) {

			jQuery.event.trigger( "ajaxStop" );

		}

	}





	// The core $.ajax replacement.  

	function handleAjax( url, origSettings ) {

		var mockRequest, requestSettings, mockHandler;



		// If url is an object, simulate pre-1.5 signature

		if ( typeof url === "object" ) {

			origSettings = url;

			url = undefined;

		} else {

			// work around to support 1.5 signature

			origSettings.url = url;

		}

		

		// Extend the original settings for the request

		requestSettings = jQuery.extend(true, {}, jQuery.ajaxSettings, origSettings);



		// Iterate over our mock handlers (in registration order) until we find

		// one that is willing to intercept the request

		for(var k = 0; k < mockHandlers.length; k++) {

			if ( !mockHandlers[k] ) {

				continue;

			}

			

			mockHandler = getMockForRequest( mockHandlers[k], requestSettings );

			if(!mockHandler) {

				// No valid mock found for this request

				continue;

			}



			// Handle console logging

			logMock( mockHandler, requestSettings );





			if ( requestSettings.dataType === "jsonp" ) {

				if ((mockRequest = processJsonpMock( requestSettings, mockHandler, origSettings ))) {

					// This mock will handle the JSONP request

					return mockRequest;

				}

			}





			// Removed to fix #54 - keep the mocking data object intact

			//mockHandler.data = requestSettings.data;



			mockHandler.cache = requestSettings.cache;

			mockHandler.timeout = requestSettings.timeout;

			mockHandler.global = requestSettings.global;



			(function(mockHandler, requestSettings, origSettings, origHandler) {

				mockRequest = _ajax.call($, $.extend(true, {}, origSettings, {

					// Mock the XHR object

					xhr: function() { return xhr( mockHandler, requestSettings, origSettings, origHandler ) }

				}));

			})(mockHandler, requestSettings, origSettings, mockHandlers[k]);



			return mockRequest;

		}



		// We don't have a mock request, trigger a normal request

		return _ajax.apply($, [origSettings]);

	}





	// Public



	$.extend({

		ajax: handleAjax

	});



	$.mockjaxSettings = {

		//url:        null,

		//type:       'GET',

		log:          function(msg) {

										window['console'] && window.console.log && window.console.log(msg);

					  			},

		status:       200,

		statusText:   "OK",

		responseTime: 500,

		isTimeout:    false,

		contentType:  'text/plain',

		response:     '',

		responseText: '',

		responseXML:  '',

		proxy:        '',

		proxyType:    'GET',



		lastModified: null,

		etag:         '',

		headers: {

			etag: 'IJF@H#@923uf8023hFO@I#H#',

			'content-type' : 'text/plain'

		}

	};



	$.mockjax = function(settings) {

		var i = mockHandlers.length;

		mockHandlers[i] = settings;

		return i;

	};

	$.mockjaxClear = function(i) {

		if ( arguments.length == 1 ) {

			mockHandlers[i] = null;

		} else {

			mockHandlers = [];

		}

	};

	$.mockjax.handler = function(i) {

	  if ( arguments.length == 1 ) {

			return mockHandlers[i];

		}

	};

})(jQuery);