* @copyright Copyright (c) 2013 - 2015, Alex Tselegidis * @license http://opensource.org/licenses/GPL-3.0 - GPLv3 * @link http://easyappointments.org * @since v1.0.0 * ---------------------------------------------------------------------------- */ /** * Appointments Controller * * @package Controllers */ class Appointments extends CI_Controller { public function __construct() { parent::__construct(); $this->load->library('session'); // Set user's selected language. if ($this->session->userdata('language')) { $this->config->set_item('language', $this->session->userdata('language')); $this->lang->load('translations', $this->session->userdata('language')); } else { $this->lang->load('translations', $this->config->item('language')); // default } } /** * Default callback method of the application. * * This method creates the appointment book wizard. If an appointment hash * is provided then it means that the customer followed the appointment * manage link that was send with the book success email. * * @param string $appointment_hash The db appointment hash of an existing * record. */ public function index($appointment_hash = '') { if (!$this->check_installation()) return; $this->load->model('appointments_model'); $this->load->model('providers_model'); $this->load->model('services_model'); $this->load->model('customers_model'); $this->load->model('settings_model'); if (strtoupper($_SERVER['REQUEST_METHOD']) !== 'POST') { try { $available_services = $this->services_model->get_available_services(); $available_providers = $this->providers_model->get_available_providers(); $company_name = $this->settings_model->get_setting('company_name'); // If an appointment hash is provided then it means that the customer // is trying to edit a registered appointment record. if ($appointment_hash !== ''){ // Load the appointments data and enable the manage mode of the page. $manage_mode = TRUE; $results = $this->appointments_model->get_batch(array('hash' => $appointment_hash)); if (count($results) === 0) { // The requested appointment doesn't exist in the database. Display // a message to the customer. $view = array( 'message_title' => $this->lang->line('appointment_not_found'), 'message_text' => $this->lang->line('appointment_does_not_exist_in_db'), 'message_icon' => $this->config->item('base_url') . '/assets/img/error.png' ); $this->load->view('appointments/message', $view); return; } $appointment = $results[0]; $provider = $this->providers_model->get_row($appointment['id_users_provider']); $customer = $this->customers_model->get_row($appointment['id_users_customer']); } else { // The customer is going to book a new appointment so there is no // need for the manage functionality to be initialized. $manage_mode = FALSE; $appointment = array(); $provider = array(); $customer = array(); } // Load the book appointment view. $view = array ( 'available_services' => $available_services, 'available_providers' => $available_providers, 'company_name' => $company_name, 'manage_mode' => $manage_mode, 'appointment_data' => $appointment, 'provider_data' => $provider, 'customer_data' => $customer ); } catch(Exception $exc) { $view['exceptions'][] = $exc; } $this->load->view('appointments/book', $view); } else { // The page is a post-back. Register the appointment and send notification emails // to the provider and the customer that are related to the appointment. If google // sync is enabled then add the appointment to the provider's account. try { $post_data = json_decode($_POST['post_data'], true); $appointment = $post_data['appointment']; $customer = $post_data['customer']; if ($this->customers_model->exists($customer)) $customer['id'] = $this->customers_model->find_record_id($customer); $customer_id = $this->customers_model->add($customer); $appointment['id_users_customer'] = $customer_id; $appointment['id'] = $this->appointments_model->add($appointment); $appointment['hash'] = $this->appointments_model->get_value('hash', $appointment['id']); $provider = $this->providers_model->get_row($appointment['id_users_provider']); $service = $this->services_model->get_row($appointment['id_services']); $company_settings = array( 'company_name' => $this->settings_model->get_setting('company_name'), 'company_link' => $this->settings_model->get_setting('company_link'), 'company_email' => $this->settings_model->get_setting('company_email') ); // :: SYNCHRONIZE APPOINTMENT WITH PROVIDER'S GOOGLE CALENDAR // The provider must have previously granted access to his google calendar account // in order to sync the appointment. try { $google_sync = $this->providers_model->get_setting('google_sync', $appointment['id_users_provider']); if ($google_sync == TRUE) { $google_token = json_decode($this->providers_model ->get_setting('google_token', $appointment['id_users_provider'])); $this->load->library('google_sync'); $this->google_sync->refresh_token($google_token->refresh_token); if ($post_data['manage_mode'] === FALSE) { // Add appointment to Google Calendar. $google_event = $this->google_sync->add_appointment($appointment, $provider, $service, $customer, $company_settings); $appointment['id_google_calendar'] = $google_event->id; $this->appointments_model->add($appointment); } else { // Update appointment to Google Calendar. $appointment['id_google_calendar'] = $this->appointments_model ->get_value('id_google_calendar', $appointment['id']); $this->google_sync->update_appointment($appointment, $provider, $service, $customer, $company_settings); } } } catch(Exception $exc) { $view['exceptions'][] = $exc; } // :: SEND NOTIFICATION EMAILS TO BOTH CUSTOMER AND PROVIDER try { $this->load->library('Notifications'); $send_provider = $this->providers_model ->get_setting('notifications', $provider['id']); if (!$post_data['manage_mode']) { $customer_title = $this->lang->line('appointment_booked'); $customer_message = $this->lang->line('thank_you_for_appointment'); $customer_link = $this->config->item('base_url') . '/index.php/appointments/index/' . $appointment['hash']; $provider_title = $this->lang->line('appointment_added_to_your_plan'); $provider_message = $this->lang->line('appointment_link_description'); $provider_link = $this->config->item('base_url') . '/index.php/backend/index/' . $appointment['hash']; } else { $customer_title = $this->lang->line('appointment_changes_saved'); $customer_message = ''; $customer_link = $this->config->item('base_url') . '/index.php/appointments/index/' . $appointment['hash']; $provider_title = $this->lang->line('appointment_details_changed'); $provider_message = ''; $provider_link = $this->config->item('base_url') . '/index.php/backend/index/' . $appointment['hash']; } $this->notifications->send_appointment_details($appointment, $provider, $service, $customer,$company_settings, $customer_title, $customer_message, $customer_link, $customer['email']); if ($send_provider == TRUE) { $this->notifications->send_appointment_details($appointment, $provider, $service, $customer, $company_settings, $provider_title, $provider_message, $provider_link, $provider['email']); } } catch(Exception $exc) { $view['exceptions'][] = $exc; } // :: LOAD THE BOOK SUCCESS VIEW $view = array( 'appointment_data' => $appointment, 'provider_data' => $provider, 'service_data' => $service, 'company_name' => $company_settings['company_name'] ); } catch(Exception $exc) { $view['exceptions'][] = $exc; } $this->load->view('appointments/book_success', $view); } } /** * Cancel an existing appointment. * * This method removes an appointment from the company's schedule. * In order for the appointment to be deleted, the hash string must * be provided. The customer can only cancel the appointment if the * edit time period is not over yet. * * @param string $appointment_hash This is used to distinguish the * appointment record. * @param string $_POST['cancel_reason'] The text that describes why * the customer cancelled the appointment. */ public function cancel($appointment_hash) { try { $this->load->model('appointments_model'); $this->load->model('providers_model'); $this->load->model('customers_model'); $this->load->model('services_model'); $this->load->model('settings_model'); // Check whether the appointment hash exists in the database. $records = $this->appointments_model->get_batch(array('hash' => $appointment_hash)); if (count($records) == 0) { throw new Exception('No record matches the provided hash.'); } $appointment = $records[0]; $provider = $this->providers_model->get_row($appointment['id_users_provider']); $customer = $this->customers_model->get_row($appointment['id_users_customer']); $service = $this->services_model->get_row($appointment['id_services']); $company_settings = array( 'company_name' => $this->settings_model->get_setting('company_name'), 'company_email' => $this->settings_model->get_setting('company_email'), 'company_link' => $this->settings_model->get_setting('company_link') ); // :: DELETE APPOINTMENT RECORD FROM THE DATABASE. if (!$this->appointments_model->delete($appointment['id'])) { throw new Exception('Appointment could not be deleted from the database.'); } // :: SYNC APPOINTMENT REMOVAL WITH GOOGLE CALENDAR if ($appointment['id_google_calendar'] != NULL) { try { $google_sync = $this->providers_model->get_setting('google_sync', $appointment['id_users_provider']); if ($google_sync == TRUE) { $google_token = json_decode($this->providers_model ->get_setting('google_token', $provider['id'])); $this->load->library('Google_Sync'); $this->google_sync->refresh_token($google_token->refresh_token); $this->google_sync->delete_appointment($provider, $appointment['id_google_calendar']); } } catch(Exception $exc) { $exceptions[] = $exc; } } // :: SEND NOTIFICATION EMAILS TO CUSTOMER AND PROVIDER try { $this->load->library('Notifications'); $send_provider = $this->providers_model ->get_setting('notifications', $provider['id']); if ($send_provider == TRUE) { $this->notifications->send_delete_appointment($appointment, $provider, $service, $customer, $company_settings, $provider['email'], $_POST['cancel_reason']); } $this->notifications->send_delete_appointment($appointment, $provider, $service, $customer, $company_settings, $customer['email'], $_POST['cancel_reason']); } catch(Exception $exc) { $exceptions[] = $exc; } } catch(Exception $exc) { // Display the error message to the customer. $exceptions[] = $exc; } $view = array( 'message_title' => $this->lang->line('appointment_cancelled_title'), 'message_text' => $this->lang->line('appointment_cancelled'), 'message_icon' => $this->config->item('base_url') . '/assets/img/success.png' ); if (isset($exceptions)) { $view['exceptions'] = $exceptions; } $this->load->view('appointments/message', $view); } /** * [AJAX] Get the available appointment hours for the given date. * * This method answers to an AJAX request. It calculates the available hours * for thegiven service, provider and date. * * @param numeric $_POST['service_id'] The selected service's record id. * @param numeric $_POST['provider_id'] The selected provider's record id. * @param string $_POST['selected_date'] The selected date of which the * available hours we want to see. * @param numeric $_POST['service_duration'] The selected service duration in * minutes. * @param string $$_POST['manage_mode'] Contains either 'true' or 'false' and determines * the if current user is managing an already booked appointment or not. * @return Returns a json object with the available hours. */ public function ajax_get_available_hours() { $this->load->model('providers_model'); $this->load->model('appointments_model'); $this->load->model('settings_model'); try { // If manage mode is TRUE then the following we should not consider the selected // appointment when calculating the available time periods of the provider. $exclude_appointments = ($_POST['manage_mode'] === 'true') ? array($_POST['appointment_id']) : array(); $empty_periods = $this->get_provider_available_time_periods($_POST['provider_id'], $_POST['selected_date'], $exclude_appointments); // Calculate the available appointment hours for the given date. The empty spaces // are broken down to 15 min and if the service fit in each quarter then a new // available hour is added to the "$available_hours" array. $available_hours = array(); foreach ($empty_periods as $period) { $start_hour = new DateTime($_POST['selected_date'] . ' ' . $period['start']); $end_hour = new DateTime($_POST['selected_date'] . ' ' . $period['end']); $minutes = $start_hour->format('i'); if ($minutes % 15 != 0) { // Change the start hour of the current space in order to be // on of the following: 00, 15, 30, 45. if ($minutes < 15) { $start_hour->setTime($start_hour->format('H'), 15); } else if ($minutes < 30) { $start_hour->setTime($start_hour->format('H'), 30); } else if ($minutes < 45) { $start_hour->setTime($start_hour->format('H'), 45); } else { $start_hour->setTime($start_hour->format('H') + 1, 00); } } $current_hour = $start_hour; $diff = $current_hour->diff($end_hour); while (($diff->h * 60 + $diff->i) >= intval($_POST['service_duration'])) { $available_hours[] = $current_hour->format('H:i'); $current_hour->add(new DateInterval("PT15M")); $diff = $current_hour->diff($end_hour); } } // If the selected date is today, remove past hours. It is important // include the timeout before booking that is set in the backoffice // the system. Normally we might want the customer to book an appointment // that is at least half or one hour from now. The setting is stored in // minutes. if (date('m/d/Y', strtotime($_POST['selected_date'])) == date('m/d/Y')) { if ($_POST['manage_mode'] === 'true') { $book_advance_timeout = 0; } else { $book_advance_timeout = $this->settings_model->get_setting('book_advance_timeout'); } foreach($available_hours as $index => $value) { $available_hour = strtotime($value); $current_hour = strtotime('+' . $book_advance_timeout . ' minutes', strtotime('now')); if ($available_hour <= $current_hour) { unset($available_hours[$index]); } } } $available_hours = array_values($available_hours); sort($available_hours, SORT_STRING ); $available_hours = array_values($available_hours); echo json_encode($available_hours); } catch(Exception $exc) { echo json_encode(array( 'exceptions' => array(exceptionToJavaScript($exc)) )); } } /** * Check whether the provider is still available in the selected appointment date. * * It might be times where two or more customers select the same appointment date and time. * This shouldn't be allowed to happen, so one of the two customers will eventually get the * prefered date and the other one will have to choose for another date. Use this method * just before the customer confirms the appointment details. If the selected date was taken * in the mean time, the customer must be prompted to select another time for his appointment. * * @param int $_POST['id_users_provider'] The selected provider's record id. * @param int $_POST['id_services'] The selected service's record id. * @param string $_POST['start_datetime'] This is a mysql formed string. * @return bool Returns whether the selected datetime is still available. */ public function ajax_check_datetime_availability() { try { $this->load->model('services_model'); $service_duration = $this->services_model->get_value('duration', $_POST['id_services']); $exclude_appointments = (isset($_POST['exclude_appointment_id'])) ? array($_POST['exclude_appointment_id']) : array(); $available_periods = $this->get_provider_available_time_periods( $_POST['id_users_provider'], $_POST['start_datetime'], $exclude_appointments); $is_still_available = FALSE; foreach($available_periods as $period) { $appt_start = new DateTime($_POST['start_datetime']); $appt_start = $appt_start->format('H:i'); $appt_end = new DateTime($_POST['start_datetime']); $appt_end->add(new DateInterval('PT' . $service_duration . 'M')); $appt_end = $appt_end->format('H:i'); $period_start = date('H:i', strtotime($period['start'])); $period_end = date('H:i', strtotime($period['end'])); if ($period_start <= $appt_start && $period_end >= $appt_end) { $is_still_available = TRUE; break; } } echo json_encode($is_still_available); } catch(Exception $exc) { echo json_encode(array( 'exceptions' => array(exceptionToJavaScript($exc)) )); } } /** * Get an array containing the free time periods (start - end) of a selected date. * * This method is very important because there are many cases where the system needs to * know when a provider is avaible for an appointment. This method will return an array * that belongs to the selected date and contains values that have the start and the end * time of an available time period. * * @param numeric $provider_id The provider's record id. * @param string $selected_date The date to be checked (MySQL formatted string). * @param array $exclude_appointments This array contains the ids of the appointments that * will not be taken into consideration when the available time periods are calculated. * @return array Returns an array with the available time periods of the provider. */ private function get_provider_available_time_periods($provider_id, $selected_date, $exclude_appointments = array()) { $this->load->model('appointments_model'); $this->load->model('providers_model'); // Get the provider's working plan and reserved appointments. $working_plan = json_decode($this->providers_model->get_setting('working_plan', $provider_id), true); $where_clause = array( //'DATE(start_datetime)' => date('Y-m-d', strtotime($selected_date)), 'id_users_provider' => $provider_id ); $reserved_appointments = $this->appointments_model->get_batch($where_clause); // Sometimes it might be necessary to not take into account some appointment records // in order to display what the providers' available time periods would be without them. foreach ($exclude_appointments as $excluded_id) { foreach ($reserved_appointments as $index => $reserved) { if ($reserved['id'] == $excluded_id) { unset($reserved_appointments[$index]); } } } // Find the empty spaces on the plan. The first split between the plan is due to // a break (if exist). After that every reserved appointment is considered to be // a taken space in the plan. $selected_date_working_plan = $working_plan[strtolower(date('l', strtotime($selected_date)))]; $available_periods_with_breaks = array(); if (isset($selected_date_working_plan['breaks'])) { if (count($selected_date_working_plan['breaks'])) { foreach($selected_date_working_plan['breaks'] as $index=>$break) { // Split the working plan to available time periods that do not // contain the breaks in them. $last_break_index = $index - 1; if (count($available_periods_with_breaks) === 0) { $start_hour = $selected_date_working_plan['start']; $end_hour = $break['start']; } else { $start_hour = $selected_date_working_plan['breaks'][$last_break_index]['end']; $end_hour = $break['start']; } $available_periods_with_breaks[] = array( 'start' => $start_hour, 'end' => $end_hour ); } // Add the period from the last break to the end of the day. $available_periods_with_breaks[] = array( 'start' => $selected_date_working_plan['breaks'][$index]['end'], 'end' => $selected_date_working_plan['end'] ); } else { $available_periods_with_breaks[] = array( 'start' => $selected_date_working_plan['start'], 'end' => $selected_date_working_plan['end'] ); } } // Break the empty periods with the reserved appointments. $available_periods_with_appointments = $available_periods_with_breaks; foreach($reserved_appointments as $appointment) { foreach($available_periods_with_appointments as $index => &$period) { $a_start = strtotime($appointment['start_datetime']); $a_end = strtotime($appointment['end_datetime']); $p_start = strtotime($selected_date . ' ' . $period['start']); $p_end = strtotime($selected_date . ' ' .$period['end']); if ($a_start <= $p_start && $a_end <= $p_end && $a_end <= $p_start) { // The appointment does not belong in this time period, so we // will not change anything. } else if ($a_start <= $p_start && $a_end <= $p_end && $a_end >= $p_start) { // The appointment starts before the period and finishes somewhere inside. // We will need to break this period and leave the available part. $period['start'] = date('H:i', $a_end); } else if ($a_start >= $p_start && $a_end <= $p_end) { // The appointment is inside the time period, so we will split the period // into two new others. unset($available_periods_with_appointments[$index]); $available_periods_with_appointments[] = array( 'start' => date('H:i', $p_start), 'end' => date('H:i', $a_start) ); $available_periods_with_appointments[] = array( 'start' => date('H:i', $a_end), 'end' => date('H:i', $p_end) ); } else if ($a_start >= $p_start && $a_end >= $p_start && $a_start <= $p_end) { // The appointment starts in the period and finishes out of it. We will // need to remove the time that is taken from the appointment. $period['end'] = date('H:i', $a_start); } else if ($a_start >= $p_start && $a_end >= $p_end && $a_start >= $p_end) { // The appointment does not belong in the period so do not change anything. } else if ($a_start <= $p_start && $a_end >= $p_end && $a_start <= $p_end) { // The appointment is bigger than the period, so this period needs to be // removed. unset($available_periods_with_appointments[$index]); } } } return array_values($available_periods_with_appointments); } /** * This method checks whether the application is installed. * * This method resides in this controller because the "index()" function will * be the first to be launched after the files are on the server. NOTE that the * "configuration.php" file must be already set because we won't be able to * connect to the database otherwise. */ public function check_installation() { try { if (!$this->db->table_exists('ea_users')) { // This is the first time the website is launched an the user needs to set // the basic settings. Display the installation view page. $view['base_url'] = $this->config->item('base_url'); $this->load->view('general/installation', $view); return FALSE; // Do not display the book appointment view file. } else { return TRUE; // Application installed, continue ... } } catch(Exception $exc) { echo $exc->getTrace(); } } /** * Installs Easy!Appointments on server. * * @param array $_POST['admin'] Contains the initial admin user data. System needs at least * one admin user to work. * @param array $_POST['company'] Contains the basic company data. */ public function ajax_install() { try { // Create E!A database structure. $file_contents = file_get_contents(__DIR__ . '/../../assets/sql/structure.sql'); $sql_queries = explode(';', $file_contents); array_pop($sql_queries); foreach($sql_queries as $query) { $this->db->query($query); } // Insert admin $this->load->model('admins_model'); $admin = json_decode($_POST['admin'], true); $admin['settings']['username'] = $admin['username']; $admin['settings']['password'] = $admin['password']; unset($admin['username'], $admin['password']); $admin['id'] = $this->admins_model->add($admin); $this->load->library('session'); $this->session->set_userdata('user_id', $admin['id']); $this->session->set_userdata('user_email', $admin['email']); $this->session->set_userdata('role_slug', DB_SLUG_ADMIN); $this->session->set_userdata('username', $admin['settings']['username']); // Save company settings $this->load->model('settings_model'); $company = json_decode($_POST['company'], true); $this->settings_model->set_setting('company_name', $company['company_name']); $this->settings_model->set_setting('company_email', $company['company_email']); $this->settings_model->set_setting('company_link', $company['company_link']); // Try to send a notification email for the new installation. // IMPORTANT: THIS WILL ONLY BE USED TO TRACK THE INSTALLATION NUMBER AND // NO PERSONAL DATA WILL BE USED FOR OTHER CAUSE. try { $this->load->library('notifications'); $this->notifications->send_new_installation($company['company_name'], $company['company_email'], $company['company_link']); } catch(Exception $exc) { // Well, I guess we'll never know ... } echo json_encode(AJAX_SUCCESS); } catch (Exception $exc) { echo json_encode(array( 'exceptions' => array(exceptionToJavaScript($exc)) )); } } } /* End of file appointments.php */ /* Location: ./application/controllers/appointments.php */