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Encapsulated Angular Module
//Define a function scope, variables used inside it will NOT be globally visible.
(function () {
var
//the HTTP headers to be used by all requests
httpHeaders,
//the message to be shown to the user
message,
//Define the main module.
//The module is accessible everywhere using "angular.module('angularspring')", therefore global variables can be avoided totally.
as = angular.module('angularspring', []);
as.config(function ($routeProvider, $httpProvider) {
//configure the rounting of ng-view
$routeProvider.when('/person', { controller: 'PersonController', templateUrl: 'person.html'});
$routeProvider.when('/admin', { controller: 'AdminController', templateUrl: 'admin/admin.html'});
//configure $http to catch message responses and show them
$httpProvider.responseInterceptors.push(function ($q) {
var setMessage = function (response) {
//if the response has a text and a type property, it is a message to be shown
if (response.data.text && response.data.type) {
message = {
text: response.data.text,
type: response.data.type,
show: true
};
}
};
return function (promise) {
return promise.then(
//this is called after each successful server request
function (response) {
setMessage(response);
return response;
},
//this is called after each unsuccessful server request
function (response) {
setMessage(response);
return $q.reject(response);
}
);
};
});
//configure $http to show a login dialog whenever a 401 unauthorized response arrives
$httpProvider.responseInterceptors.push(function ($rootScope, $q) {
return function (promise) {
return promise.then(
//success -> don't intercept
function (response) {
return response;
},
//error -> if 401 save the request and broadcast an event
function (response) {
if (response.status === 401) {
var deferred = $q.defer(),
req = {
config: response.config,
deferred: deferred
};
$rootScope.requests401.push(req);
$rootScope.$broadcast('event:loginRequired');
return deferred.promise;
}
return $q.reject(response);
}
);
};
});
httpHeaders = $httpProvider.defaults.headers;
});
as.run(function ($rootScope, $http, base64) {
//make current message accessible to root scope and therefore all scopes
$rootScope.message = function () {
return message;
};
/**
* Holds all the requests which failed due to 401 response.
*/
$rootScope.requests401 = [];
$rootScope.$on('event:loginRequired', function () {
$('#login').modal('show');
});
/**
* On 'event:loginConfirmed', resend all the 401 requests.
*/
$rootScope.$on('event:loginConfirmed', function () {
var i,
requests = $rootScope.requests401,
retry = function (req) {
$http(req.config).then(function (response) {
req.deferred.resolve(response);
});
};
for (i = 0; i < requests.length; i += 1) {
retry(requests[i]);
}
$rootScope.requests401 = [];
});
/**
* On 'event:loginRequest' send credentials to the server.
*/
$rootScope.$on('event:loginRequest', function (event, username, password) {
httpHeaders.common['Authorization'] = 'Basic ' + base64.encode(username + ':' + password);
$http.get('action/user').success(function (data) {
$rootScope.user = data;
$rootScope.$broadcast('event:loginConfirmed');
});
});
/**
* On 'logoutRequest' invoke logout on the server and broadcast 'event:loginRequired'.
*/
$rootScope.$on('event:logoutRequest', function () {
httpHeaders.common['Authorization'] = null;
});
});
}());
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