From a759cb89f70dee4d2554c570e77b0b26bf84b1d4 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Thu, 24 Feb 2022 15:38:51 +0100
Subject: [PATCH] Replace Google Client JS with the Google Calendar Template
 link in the book success page (#1216)

---
 application/controllers/Appointments.php      |  30 ++++-
 .../views/appointments/book_success.php       |  14 +--
 assets/js/frontend_book_success.js            | 111 +-----------------
 3 files changed, 33 insertions(+), 122 deletions(-)

diff --git a/application/controllers/Appointments.php b/application/controllers/Appointments.php
index 3ce6675b..ce91ad8e 100755
--- a/application/controllers/Appointments.php
+++ b/application/controllers/Appointments.php
@@ -150,7 +150,7 @@ class Appointments extends EA_Controller {
                 }
 
                 $appointment = $results[0];
-                
+
                 $appointment = [
                     'id' => $appointment['id'],
                     'hash' => $appointment['hash'],
@@ -303,7 +303,7 @@ class Appointments extends EA_Controller {
     }
 
     /**
-     * GET an specific appointment book and redirect to the success screen.
+     * GET a specific appointment book and redirect to the success screen.
      *
      * @param string $appointment_hash The appointment hash identifier.
      *
@@ -315,12 +315,18 @@ class Appointments extends EA_Controller {
 
         if (empty($appointments))
         {
-            redirect('appointments'); // The appointment does not exist.
+            $vars = [
+                'message_title' => lang('appointment_not_found'),
+                'message_text' => lang('appointment_does_not_exist_in_db'),
+                'message_icon' => base_url('assets/img/error.png')
+            ];
+
+            $this->load->view('appointments/message', $vars);
+
             return;
         }
 
         $appointment = $appointments[0];
-        unset($appointment['notes']);
 
         $customer = $this->customers_model->get_row($appointment['id_users_customer']);
 
@@ -330,6 +336,21 @@ class Appointments extends EA_Controller {
 
         $company_name = $this->settings_model->get_setting('company_name');
 
+        $appointment_start_instance = new DateTime($appointment['start_datetime']);
+
+        $appointment_end_instance = new DateTime($appointment['end_datetime']);
+
+        $add_to_google_url_params = [
+            'action' => 'TEMPLATE',
+            'text' => $service['name'],
+            'dates' => $appointment_start_instance->format('Ymd\THis\Z') . '/' . $appointment_end_instance->format('Ymd\THis\Z'),
+            'location' => $company_name,
+            'details' => 'View/Change Appointment: ' . site_url('appointments/index/' . $appointment['hash']),
+            'add' => $provider['email'] . ',' . $customer['email']
+        ];
+
+        $add_to_google_url = 'https://calendar.google.com/calendar/render?' . http_build_query($add_to_google_url_params);
+
         // Get any pending exceptions.
         $exceptions = $this->session->flashdata('book_success');
 
@@ -354,6 +375,7 @@ class Appointments extends EA_Controller {
                 'name' => $service['name'],
             ],
             'company_name' => $company_name,
+            'add_to_google_url' => $add_to_google_url,
         ];
 
         if ($exceptions)
diff --git a/application/views/appointments/book_success.php b/application/views/appointments/book_success.php
index 875d2eb1..d2a3c0da 100755
--- a/application/views/appointments/book_success.php
+++ b/application/views/appointments/book_success.php
@@ -42,12 +42,10 @@
                     <?= lang('go_to_booking_page') ?>
                 </a>
 
-                <?php if (config('google_sync_feature')): ?>
-                    <button id="add-to-google-calendar" class="btn btn-primary">
-                        <i class="fas fa-plus"></i>
-                        <?= lang('add_to_google_calendar') ?>
-                    </button>
-                <?php endif ?>
+                <a href="<?= $add_to_google_url ?>" id="add-to-google-calendar" class="btn btn-primary" target="_blank">
+                    <i class="fas fa-plus"></i>
+                    <?= lang('add_to_google_calendar') ?>
+                </a>
 
                 <?php if (isset($exceptions)): ?>
                     <div class="m-2">
@@ -75,7 +73,6 @@
 <script src="<?= base_url('assets/ext/datejs/date.min.js') ?>"></script>
 <script src="<?= asset_url('assets/ext/moment/moment.min.js') ?>"></script>
 <script src="<?= asset_url('assets/ext/moment/moment-timezone-with-data.min.js') ?>"></script>
-<script src="https://apis.google.com/js/client.js"></script>
 
 <script>
     var GlobalVariables = {
@@ -85,9 +82,6 @@
         customerData: <?= json_encode($customer_data) ?>,
         serviceData: <?= json_encode($service_data) ?>,
         companyName: <?= json_encode($company_name) ?>,
-        googleApiKey: <?= json_encode(config('google_api_key')) ?>,
-        googleClientId: <?= json_encode(config('google_client_id')) ?>,
-        googleApiScope: 'https://www.googleapis.com/auth/calendar'
     };
 
     var EALang = <?= json_encode($this->lang->language) ?>;
diff --git a/assets/js/frontend_book_success.js b/assets/js/frontend_book_success.js
index 22282ec2..fb3eedea 100644
--- a/assets/js/frontend_book_success.js
+++ b/assets/js/frontend_book_success.js
@@ -10,112 +10,7 @@
  * ---------------------------------------------------------------------------- */
 
 $(document).ready(function () {
-    /**
-     * Event: Add Appointment to Google Calendar "Click"
-     *
-     * This event handler adds the appointment to the users Google Calendar Account. The event is going to
-     * be added to the "primary" calendar. In order to use the API the javascript client library provided by
-     * Google is necessary.
-     */
-    $('#add-to-google-calendar').on('click', function () {
-        gapi.client.setApiKey(GlobalVariables.googleApiKey);
-        gapi.auth.authorize({
-            client_id: GlobalVariables.googleClientId,
-            scope: GlobalVariables.googleApiScope,
-            immediate: false
-        }, handleAuthResult);
-    });
-
-    /**
-     * Handle Authorization Result
-     *
-     * This method handles the authorization result. If the user granted access to his data, then the
-     * appointment is going to be added to his calendar.
-     *
-     * @param {Boolean} authResult The user's authorization result.
-     */
-    function handleAuthResult(authResult) {
-        try {
-            if (authResult.error) {
-                throw new Error('Could not authorize user.');
-            }
-
-            // The user has granted access, add the appointment to his calendar. Before making the event.insert request
-            // the the event resource data must be prepared.
-            var providerData = GlobalVariables.providerData;
-
-            var appointmentData = GlobalVariables.appointmentData;
-
-            // Create a valid Google Calendar API resource for the new event.
-            var resource = {
-                summary: GlobalVariables.serviceData.name,
-                location: GlobalVariables.companyName,
-                start: {
-                    dateTime: moment.tz(appointmentData.start_datetime, providerData.timezone).format()
-                },
-                end: {
-                    dateTime: moment.tz(appointmentData.end_datetime, providerData.timezone).format()
-                },
-                attendees: [
-                    {
-                        email: GlobalVariables.providerData.email,
-                        displayName: GlobalVariables.providerData.first_name + ' '
-                            + GlobalVariables.providerData.last_name
-                    }
-                ]
-            };
-
-            gapi.client.load('calendar', 'v3', function () {
-                var request = gapi.client.calendar.events.insert({
-                    calendarId: 'primary',
-                    resource: resource
-                });
-
-                request.execute(function (response) {
-                    if (response.error) {
-                        throw new Error('Could not add the event to Google Calendar.');
-                    }
-
-                    $('#success-frame').append(
-                        $('<br/>'),
-                        $('<div/>', {
-                            'class': 'alert alert-success col-xs-12',
-                            'html': [
-                                $('<h4/>', {
-                                    'text': EALang.success
-                                }),
-                                $('<p/>', {
-                                    'text': EALang.appointment_added_to_google_calendar
-                                }),
-                                $('<a/>', {
-                                    'href': response.htmlLink,
-                                    'text': EALang.view_appointment_in_google_calendar
-                                })
-                            ]
-                        })
-                    );
-                    $('#add-to-google-calendar').hide();
-                });
-            });
-        } catch (error) {
-            // The user denied access or something else happened, display corresponding message on the screen.
-            $('#success-frame').append(
-                $('<br/>'),
-                $('<div/>', {
-                    'class': 'alert alert-danger col-xs-12',
-                    'html': [
-                        $('<h4/>', {
-                            'text': EALang.oops_something_went_wrong
-                        }),
-                        $('<p/>', {
-                            'text': EALang.could_not_add_to_google_calendar
-                        }),
-                        $('<pre/>', {
-                            'text': error.message
-                        }),
-                    ]
-                })
-            );
-        }
-    }
+    
+    //
+    
 });