mainApp.factory('Identity',[ '$http', '$cookies', '$rootScope', function($http, $cookies, $rootScope){

	/* Create profile structure to store informations
	 * about current session
	 */
    var profile={};
    profile.username=null;
    profile.projectname=null;
	var token=null;

	
	/* 
	 * @returns {boolean} Return true if a cookie is found (and load it in profile) false else 
	 */
	var isAlreadyLogin=function(){

		// Load cookies
		var profileInCookie=$cookies.getObject('profile');
		var tokenPart_0InCookie=$cookies.getObject('token.part_0');
		var tokenPart_1InCookie=$cookies.getObject('token.part_1');

		
		// Check if cookie is defined
		if(typeof profileInCookie !== 'undefined'
		   && typeof tokenPart_0InCookie !== 'undefined'
		   && typeof tokenPart_1InCookie !== 'undefined'
		  ){

			//if(token!==null){
				// If yes, put it into variables
				angular.extend(profile, profileInCookie);
				token=tokenPart_0InCookie+tokenPart_1InCookie;
				
			//}

			// Return I'm Login
			return true;
		}
                
                // Show the login overlay
                $rootScope.$broadcast("logoutEvent");
                
		// Return I'm not Login
		return false;
	}


	
	/*
	 * Destroy profile cookies
	 */
	var logout=function(){
		$cookies.remove('profile');
		$cookies.remove('token.part_0');
		$cookies.remove('token.part_1');
		token=null;
		profile.username=null;
		profile.projectname=null;

		// Reload Page
		//location.reload();
                $rootScope.$broadcast("logoutEvent");

	}

	
	/**
	 * 
	 * @param {string} response The response to parse
	 * @param {boolean} to check if the request is send or not
	 * @returns {requestParserResult} Formated data
	 */
	var parseLoginAnswer=function(response, failedToSendRequest){
		
		// Defined return object
		var requestParserResult={};
		requestParserResult.status=1;
		requestParserResult.failReason=null;

		if (typeof response.data.token !== 'undefined') {
			// Set status code
			requestParserResult.status=0;

			// Find the middle of the token to split it
			var middle=parseInt(response.data.token.length/2);

			// Create expire date (cookie expire in 55 mins)
			var expireDate=new Date();
			expireDate.setMinutes(expireDate.getMinutes()+55);
			
			// Save profile
			$cookies.putObject('profile', profile, {'expires': expireDate});
			// Save first part of token
			$cookies.putObject('token.part_0', response.data.token.substring(0, middle), {'expires': expireDate});
			// Save second part of token
			$cookies.putObject('token.part_1', response.data.token.substring(middle, response.data.token.length), {'expires': expireDate});

			// Put token in var
			token=response.data.token;
			
		}
		else if(failedToSendRequest){
			requestParserResult.failReason="Failed to send request";
		}
		else{
			requestParserResult.failReason="Please check your username, password and project name !";
		}

		
		return requestParserResult;
	};

	
	/**
	 * Function to connect to OpenStack
	 * 
	 * @param {object} $http Angular $http service
	 * @param {string} username The user name
	 * @param {string} password The user password
	 * @param {string} projectname The user project name
	 * @param {function} function to call when data is avalaible
	 */
	var login=function(username, password,projectname,callback){    
		
		// Set profile information (early)
		profile.username=username;
		profile.projectname=projectname;
		
		var result=$http.post('../server/index.php',
							  $.param({"task" : "Authenticate", "user" : username, "password" : password, "project" : projectname}));  

		// Wait and handle the response
        result.then(function (response){
			callback(parseLoginAnswer(response, false));
        },function(response){
			callback(parseLoginAnswer(response, true));
        });		
	};	




	
	/*
     * Get the profile
	 */
	var getProfile=function(){
		return profile;
	}

	/*
     * Get the token
	 */	
	var getToken=function(){
		return token;
	}

	

	// Return services objects
	return {
		login: login,
		getProfile: getProfile,
		isAlreadyLogin: isAlreadyLogin,
		logout:logout,
		getToken:getToken
	};

	
}]);