angular.module('app.authService', [])

.factory('Auth',  function($http, $q, $window, AuthToken, $location) {

    var authFactory = {};

    authFactory.login = function(username, password) {
        return $http.post('/api/v1/auth', {
            username: username,
            password: password
        })
        .success(function(data) {
            AuthToken.setToken(data.token);
            return data;
        })
    };

    authFactory.logout = function() {
        AuthToken.setToken();

        $location.url('/');
    };

    authFactory.isLoggedIn = function() {
        if (AuthToken.getToken()) {
            return true;
        } else {
            return false;
        }
    };

    authFactory.getUser = function() {
        if (AuthToken.getToken()) {
            return $http.get('/api/v1/me').then(function(response) {
                return response.data;
            });
        } else {
            return $q.reject({ message: 'User has no token'});
        }
    };

    return authFactory;
})

.factory('AuthToken', function($window) {

    var authTokenFactory = {};

    authTokenFactory.getToken = function() {
        return $window.localStorage.getItem('token');
    };

    authTokenFactory.setToken = function(token) {
        if (token) {
            $window.localStorage.setItem('token', token);
        } else {
            $window.localStorage.removeItem('token');
        }
    };

    return authTokenFactory;
})

.factory('AuthInterceptor', function($q, $location, AuthToken) {

    var interceptorFactory = {};

    interceptorFactory = {};

    interceptorFactory.request = function(config) {

        var token = AuthToken.getToken();

        if (token) {
            config.headers['x-access-token'] = token;
        }

        return config;
    }

    interceptorFactory.responseError = function(response) {

        if (response.status == 403 || response.status == 401) {
            AuthToken.setToken();
            $location.path('/login');
        }

        return $q.reject(response);
    }

    return interceptorFactory;
});