// vim: set tw=80 ts=4 sw=4 sts=4:
/*
    This file is part of Accountant.

    Accountant is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Accountant is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with Accountant.  If not, see <http://www.gnu.org/licenses/>.
 */
/* jshint node: true */
'use strict';

var angular = require('angular');

var ngStorage  = require('meanie-angular-storage'),
    ngHttpAuth = require('angular-http-auth'),
    angularUiBootstrap = require('angular-ui-bootstrap');

// Note: ngHttpAuth seems to have no module.exports.
ngHttpAuth = 'http-auth-interceptor';

var loginTmpl = require('./login.tmpl.html');

var base64 = require('base64util');

var loginModule = angular.module('accountant.login', [
    ngHttpAuth,
    ngStorage,
    angularUiBootstrap
])

.factory('LoginService', function($uibModal, $storage, $document, $log, authService) {
    var login = function () {
        $storage.session.clear();

        var modalInstance = $uibModal.open({
            animation: true,
            ariaLabelledBy: 'modal-title',
            ariaDescribedBy: 'modal-body',
            templateUrl: loginTmpl,
            controller: 'LoginModalController',
            controllerAs: '$ctrl',
            size: 'lg',
        });

        modalInstance.result.then(function (data) {
            $log.log(data);

            // TODO Alexis Lahouze 2015-08-28 Handle callback.
            // Call to /api/login to retrieve the token
            $storage.session.set('refresh_token', data.refresh_token);
            $storage.session.set('access_token', data.access_token);

            authService.loginConfirmed();
        }, function () {
            $log.info('Modal dismissed at: ' + new Date());
            authService.loginCancelled(null, 'Login cancelled by user action.');
        });
    };

    return {
        'login': login
    };
})

.factory('sessionInjector', function($storage) {
    var sessionInjector = {
        request: function(config) {
            var access_token = $storage.session.get('access_token');

            if (access_token) {
                //var tokenType = $storage.get('token_type');
                var tokenType = 'Bearer';
                var authorization = tokenType + ' ' + access_token;
                config.headers.authorization = authorization;
            }

            return config;
        }
    };

    return sessionInjector;
})

.config(function($httpProvider) {
    // Define interceptors.
    $httpProvider.interceptors.push('sessionInjector');
})

.config(function($storageProvider) {
    // Configure storage
    // Set global prefix for stored keys
    $storageProvider.setPrefix('accountant');

    // Change the default storage engine
    // Defaults to 'local'
    $storageProvider.setDefaultStorageEngine('session');

    // Change the enabled storage engines
    // Defaults to ['memory', 'cookie', 'session', 'local']
    $storageProvider.setEnabledStorageEngines(['local', 'session']);
})

.controller('LoginModalController', function($scope, $uibModalInstance, $http, $log) {
    var vm = this;

    vm.data = {
        email: 'user@example.com',
        password: 'password'
    };

    vm.ok = function() {
        var email = vm.data.email;
        var password = vm.data.password;

        $log.log(email, password);

        var authdata = base64.encode(email + ':' + password);

        return $http.post('/api/user/login', {}, {
            headers: {
                'authorization': 'Basic ' + authdata
            }
        }).then(function(result) {
            $log.log(result);

            $uibModalInstance.close(result.data);
        });
    };

    vm.cancel = function() {
        $uibModalInstance.dismiss('cancel');
    };
})

.run(function($rootScope, LoginService) {
    var onAuthLoginRequired = $rootScope.$on('event:auth-loginRequired', LoginService.login);

    $rootScope.$on('$destroy', function() {
        onAuthLoginRequired = angular.noop();
    });
});


module.exports = loginModule;