// 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'),
    ngUiBootstrap = 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');

module.exports = angular.module('accountant.login', [
    ngHttpAuth,
    ngStorage,
    ngUiBootstrap
])

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

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

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

                $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());

                // FIXME Alexis Lahouze 2017-06-11 Redirect to error page.
                authService.loginCancelled(null, 'Login cancelled by user action.');
            });
        };

        var cancelLogin = function () {
            // FIXME Alexis Lahouze 2017-06-11 Redirect to error page.
        };

        return {
            'login': login,
            'cancelLogin': cancelLogin
        };
    })

    .config(function($httpProvider, $storageProvider) {
        // Define interceptors.
        $httpProvider.interceptors.push(function($storage) {
            return {
                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;
                },
            };
        });

        // 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: null,
            password: null
        };

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

            // Encode authentication data.
            var authdata = base64.encode(email + ':' + password);

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

                $uibModalInstance.close(result.data);
            }, function(response) {
                // FIXME Alexis Lahouze 2017-06-11 Handle error.
                $log.log("Error on login", response);
            });
        };

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

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

        var onAuthLoginCancelled = $rootScope.$on('event:auth-loginCancelled', LoginService.cancelLogin);

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

    .name;