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angular-http-auth.js
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78 lines (69 loc) · 2.18 KB
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/**
* @license HTTP Auth Interceptor Module for AngularJS
* (c) 2012 Witold Szczerba
* License: MIT
*/
angular.module('http-auth-interceptor', [])
.provider('authService', function() {
/**
* Holds all the requests which failed due to 401 response,
* so they can be re-requested in future, once login is completed.
*/
var buffer = [];
/**
* Required by HTTP interceptor.
* Function is attached to provider to be invisible for regular users of this service.
*/
this.pushToBuffer = function(config, deferred) {
buffer.push({
config: config,
deferred: deferred
});
}
this.$get = ['$rootScope','$injector', function($rootScope, $injector) {
var $http; //initialized later because of circular dependency problem
function retry(config, deferred) {
$http = $http || $injector.get('$http');
$http(config).then(function(response) {
deferred.resolve(response);
});
}
function retryAll() {
for (var i = 0; i < buffer.length; ++i) {
retry(buffer[i].config, buffer[i].deferred);
}
buffer = [];
}
return {
loginConfirmed: function() {
$rootScope.$broadcast('event:auth-loginConfirmed');
retryAll();
}
}
}]
})
/**
* $http interceptor.
* On 401 response - it stores the request and broadcasts 'event:angular-auth-loginRequired'.
*/
.config(['$httpProvider', 'authServiceProvider', function($httpProvider, authServiceProvider) {
var interceptor = ['$rootScope', '$q', function($rootScope, $q) {
function success(response) {
return response;
}
function error(response) {
if (response.status === 401) {
var deferred = $q.defer();
authServiceProvider.pushToBuffer(response.config, deferred);
$rootScope.$broadcast('event:auth-loginRequired');
return deferred.promise;
}
// otherwise
return $q.reject(response);
}
return function(promise) {
return promise.then(success, error);
}
}];
$httpProvider.responseInterceptors.push(interceptor);
}]);