/*!
 * MockJax - jQuery Plugin to Mock Ajax requests
 *
 * Version:  1.5.2
 * 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 = $.ajax,
    mockHandlers = [],
    mockedAjaxCalls = [],
    CALLBACK_REGEX = /=\?(&|$)/,
    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');
      }
      return xmlDoc;
    } catch( e ) {
      var msg = ( e.name == undefined ? e : e.name + ': ' + e.message );
      $(document).trigger('xmlParseError', [ msg ]);
      return undefined;
    }
  }

  // Trigger a jQuery event
  function trigger(s, type, args) {
    (s.context ? $(s.context) : $.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 = true;
    // 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) {
      if ( live[k] === undefined ) {
        identical = false;
        return identical;
      } else {
        if ( typeof live[k] == 'object' ) {
          identical = identical && isMockDataEqual(mock[k], live[k]);
        } else {
          if ( $.isFunction( mock[k].test ) ) {
            identical = identical && mock[k].test(live[k]);
          } else {
            identical = identical && ( mock[k] == live[k] );
          }
        }
      }
    });

    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(/\*/g, '.+')).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;
  }

  // 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() {
          var onReady;

          // 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);
              //in jQuery 1.9.1+, responseXML is processed differently and relies on responseText
              this.responseText = 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 2.0 renamed onreadystatechange to onload
          onReady = this.onreadystatechange || this.onload;

          // jQuery < 1.4 doesn't have onreadystate change for xhr
          if ( $.isFunction( onReady ) ) {
            if( mockHandler.isTimeout) {
              this.status = -1;
            }
            onReady.call( this, 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) {
          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(true, {}, $.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, origSettings);

      // 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, callbackContext, mockHandler );
    jsonpComplete( requestSettings, callbackContext, mockHandler );

    // If we are running under jQuery 1.5+, return a deferred object
    if($.Deferred){
      newMock = new $.Deferred();
      if(typeof mockHandler.responseText == "object"){
        newMock.resolveWith( callbackContext, [mockHandler.responseText] );
      }
      else{
        newMock.resolveWith( callbackContext, [$.parseJSON( mockHandler.responseText )] );
      }
    }
    return newMock;
  }


  // Create the required JSONP callback function for the request
  function createJsonpCallback( requestSettings, mockHandler, origSettings ) {
    var callbackContext = origSettings && origSettings.context || requestSettings;
    var 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, callbackContext, mockHandler );
      jsonpComplete( requestSettings, callbackContext, 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, callbackContext, mockHandler) {
    // If a local callback was specified, fire it and pass it the data
    if ( requestSettings.success ) {
      requestSettings.success.call( callbackContext, mockHandler.responseText || "", status, {} );
    }

    // Fire the global callback
    if ( requestSettings.global ) {
      trigger(requestSettings, "ajaxSuccess", [{}, requestSettings] );
    }
  }

  // The JSONP request was completed
  function jsonpComplete(requestSettings, callbackContext) {
    // 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 && ! --$.active ) {
      $.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 = $.extend(true, {}, $.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;
      }

      mockedAjaxCalls.push(requestSettings);

      // If logging is enabled, log the mock to the console
      $.mockjaxSettings.log( 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;

      copyUrlParameters(mockHandler, origSettings);

      (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]);
  }

  /**
  * Copies URL parameter values if they were captured by a regular expression
  * @param {Object} mockHandler
  * @param {Object} origSettings
  */
  function copyUrlParameters(mockHandler, origSettings) {
    //parameters aren't captured if the URL isn't a RegExp
    if (!(mockHandler.url instanceof RegExp)) {
      return;
    }
    //if no URL params were defined on the handler, don't attempt a capture
    if (!mockHandler.hasOwnProperty('urlParams')) {
      return;
    }
    var captures = mockHandler.url.exec(origSettings.url);
    //the whole RegExp match is always the first value in the capture results
    if (captures.length === 1) {
      return;
    }
    captures.shift();
    //use handler params as keys and capture resuts as values
    var i = 0,
    capturesLength = captures.length,
    paramsLength = mockHandler.urlParams.length,
    //in case the number of params specified is less than actual captures
    maxIterations = Math.min(capturesLength, paramsLength),
    paramValues = {};
    for (i; i < maxIterations; i++) {
      var key = mockHandler.urlParams[i];
      paramValues[key] = captures[i];
    }
    origSettings.urlParams = paramValues;
  }


  // Public

  $.extend({
    ajax: handleAjax
  });

  $.mockjaxSettings = {
    //url:        null,
    //type:       'GET',
    log:          function( mockHandler, requestSettings ) {
      if ( mockHandler.logging === false ||
         ( typeof mockHandler.logging === 'undefined' && $.mockjaxSettings.logging === false ) ) {
        return;
      }
      if ( window.console && console.log ) {
        var message = 'MOCK ' + requestSettings.type.toUpperCase() + ': ' + requestSettings.url;
        var request = $.extend({}, requestSettings);

        if (typeof console.log === 'function') {
          console.log(message, request);
        } else {
          try {
            console.log( message + ' ' + JSON.stringify(request) );
          } catch (e) {
            console.log(message);
          }
        }
      }
    },
    logging:      true,
    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 = [];
    }
    mockedAjaxCalls = [];
  };
  $.mockjax.handler = function(i) {
    if ( arguments.length == 1 ) {
      return mockHandlers[i];
    }
  };
  $.mockjax.mockedAjaxCalls = function() {
    return mockedAjaxCalls;
  };
})(jQuery);