372 lines
No EOL
18 KiB
PHP
372 lines
No EOL
18 KiB
PHP
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
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class Appointments extends CI_Controller {
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/**
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* Default callback method of the application.
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*
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* This method creates the appointment book wizard. If an appointment hash
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* is provided then it means that the customer followed the appointment
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* manage link that was send with the book success email.
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*
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* @param string $appointment_hash The db appointment hash of an existing
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* record.
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*/
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public function index($appointment_hash = '') {
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if (strtoupper($_SERVER['REQUEST_METHOD']) !== 'POST') {
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$this->load->model('Settings_Model');
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$this->load->model('Services_Model');
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$this->load->model('Providers_Model');
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$company_name = $this->Settings_Model->get_setting('company_name');
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$available_services = $this->Services_Model->get_available_services();
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$available_providers = $this->Providers_Model->get_available_providers();
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// If an appointment hash is provided then it means that the customer
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// is trying to edit a registered record.
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if ($appointment_hash !== ''){
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// Load the appointments data and set the manage mode of the page.
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$this->load->model('Appointments_Model');
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$this->load->model('Customers_Model');
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$manage_mode = TRUE;
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$appointment_data = $this->Appointments_Model
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->get_batch(array('hash' => $appointment_hash))[0];
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$provider_data = $this->Providers_Model
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->get_row($appointment_data['id_users_provider']);
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$customer_data = $this->Customers_Model
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->get_row($appointment_data['id_users_customer']);
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} else {
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// The customer is going to book an appointment so there is no
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// need for the manage functionality to be initialized.
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$manage_mode = FALSE;
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$appointment_data = array();
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$provider_data = array();
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$customer_data = array();
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}
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// Load the book appointment view.
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$view_data = array (
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'available_services' => $available_services,
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'available_providers' => $available_providers,
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'company_name' => $company_name,
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'manage_mode' => $manage_mode,
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'appointment_data' => $appointment_data,
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'provider_data' => $provider_data,
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'customer_data' => $customer_data
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);
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$this->load->view('appointments/book', $view_data);
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} else {
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// The page is a post-back. Register the appointment and send
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// notification emails to the provider and the customer that are
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// related to the appointment.
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$post_data = json_decode($_POST['post_data'], true);
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$appointment_data = $post_data['appointment'];
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$customer_data = $post_data['customer'];
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$this->load->model('Customers_Model');
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$this->load->model('Appointments_Model');
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$customer_id = $this->Customers_Model->add($customer_data);
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$appointment_data['id_users_customer'] = $customer_id;
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$appointment_data['id'] = $this->Appointments_Model->add($appointment_data);
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$appointment_data['hash'] = $this->Appointments_Model
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->get_value('hash', $appointment_data['id']);
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// Send an email to the customer with the appointment info.
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$this->load->library('Notifications');
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try {
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if (!$post_data['manage_mode']) {
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$customer_title = 'Your appointment has been successfully booked!';
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$provider_title = 'A new appointment has been added to your plan.';
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} else {
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$customer_title = 'Appointment changes saved successfully!';
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$provider_title = 'Appointment details have changed.';
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}
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$this->notifications->send_book_success(
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$customer_data, $appointment_data, $customer_title);
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$this->notifications->send_new_appointment(
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$customer_data, $appointment_data, $provider_title);
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} catch (NotificationException $not_exc) {
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$view_data['notification_error'] = '<br><br>'
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. '<pre>An unexpected error occured while sending you an '
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. 'email. Please backup the appointment details so that '
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. 'you can restore them later. <br><br>Error: <br>'
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. $not_exc->getMessage() . '</pre>';
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}
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// Load the book appointment view.
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$view_data['appointment_id'] = $appointment_data['id'];
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$this->load->view('appointments/book_success', $view_data);
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}
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}
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/**
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* Cancel an existing appointment.
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*
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* This method removes an appointment from the company's schedule.
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* In order for the appointment to be deleted, the hash string must
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* be provided. The customer can only cancel the appointment if the
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* edit time period is not over yet.
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*
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* @param string $appointment_hash This is used to distinguish the
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* appointment record.
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*/
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public function cancel($appointment_hash) {
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try {
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$this->load->model('Appointments_Model');
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$this->load->model('Providers_Model');
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$this->load->model('Customers_Model');
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// Check whether the appointment hash exists in the database.
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$records = $this->Appointments_Model->get_batch(array('hash' => $appointment_hash));
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if (count($records) == 0) {
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throw new Exception('No record matches the provided hash.');
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}
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$appointment_data = $records[0];
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// Delete the appointment from the database.
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if (!$this->Appointments_Model->delete($appointment_data['id'])) {
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throw new Exception('Appointment could not be deleted from the database.');
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}
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// Send notification emails to the customer and provider.
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$provider_email = $this->Providers_Model->get_value('email',
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$appointment_data['id_users_provider']);
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$customer_email = $this->Customers_Model->get_value('email',
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$appointment_data['id_users_customer']);
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$this->load->library('Notifications');
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$this->notifications->send_cancel_appointment($appointment_data, $provider_email);
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$this->notifications->send_cancel_appointment($appointment_data, $customer_email);
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} catch(Exception $exc) {
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// Display the error message to the customer.
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$view_data['error_message'] = $exc->getMessage();
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}
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$this->load->view('appointments/cancel');
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}
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/**
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* [AJAX] Get the available appointment hours for the given date.
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*
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* This method answers to an AJAX request. It calculates the
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* available hours for the given service, provider and date.
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*
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* @param array $_POST['post_data'] An associative array that
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* contains the user selected 'service_id', 'provider_id',
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* 'selected_date' and 'service_duration' in minutes.
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* @return Returns a json object with the available hours.
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*/
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public function ajax_get_available_hours() {
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$this->load->model('Providers_Model');
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$this->load->model('Appointments_Model');
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$this->load->model('Settings_Model');
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// Get the provider's working plan and reserved appointments.
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$working_plan = json_decode($this->Providers_Model
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->get_setting('working_plan', $_POST['provider_id']), true);
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$where_clause = array(
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'DATE(start_datetime)' => date('Y-m-d', strtotime($_POST['selected_date'])),
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'id_users_provider' => $_POST['provider_id']
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);
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$reserved_appointments = $this->Appointments_Model->get_batch($where_clause);
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if ($_POST['manage_mode'] === 'true') {
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// Current record id shouldn't be included as reserved time,
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// whent the manage mode is true.
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foreach($reserved_appointments as $index=>$appointment) {
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if ($appointment['id'] == $_POST['appointment_id']) {
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unset($reserved_appointments[$index]);
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}
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}
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}
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// Find the empty spaces on the plan. The first split between
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// the plan is due to a break (if exist). After that every reserved
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// appointment is considered to be a taken space in the plan.
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$sel_date_working_plan = $working_plan[strtolower(date('l',
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strtotime($_POST['selected_date'])))];
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$empty_spaces_with_breaks = array();
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if (isset($sel_date_working_plan['breaks'])) {
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foreach($sel_date_working_plan['breaks'] as $index=>$break) {
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// Split the working plan to available time periods that do not
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// contain the breaks in them.
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$last_break_index = $index - 1;
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if (count($empty_spaces_with_breaks) === 0) {
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$start_hour = $sel_date_working_plan['start'];
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$end_hour = $break['start'];
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} else {
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$start_hour = $sel_date_working_plan['breaks'][$last_break_index]['end'];
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$end_hour = $break['start'];
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}
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$empty_spaces_with_breaks[] = array(
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'start' => $start_hour,
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'end' => $end_hour
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);
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}
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// Add the space from the last break to the end of the day.
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$empty_spaces_with_breaks[] = array(
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'start' => $sel_date_working_plan['breaks'][$index]['end'],
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'end' => $sel_date_working_plan['end']
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);
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}
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// PROBLEM
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// Break the empty spaces with the reserved appointments.
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$empty_spaces_with_appointments = array();
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if (count($reserved_appointments) > 0) {
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foreach($empty_spaces_with_breaks as $space) {
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foreach($reserved_appointments as $index=>$appointment) {
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$appointment_start = date('H:i', strtotime($appointment['start_datetime']));
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$appointment_end = date('H:i', strtotime($appointment['end_datetime']));
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$space_start = date('H:i', strtotime($space['start']));
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$space_end = date('H:i', strtotime($space['end']));
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if ($space_start < $appointment_start && $space_end > $appointment_end) {
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// Current appointment is within the current empty space. So
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// we need to break the empty space into two other spaces that
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// don't include the appointment.
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$empty_spaces_with_appointments[] = array(
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'start' => $space_start,
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'end' => $appointment_start
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);
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$empty_spaces_with_appointments[] = array(
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'start' => $appointment_end,
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'end' => $space_end
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);
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} else {
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// Check if there are any other appointments between this
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// time space. If not, it is going to be added as it is.
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$found = FALSE;
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foreach($reserved_appointments as $appt) {
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$appt_start = date('H:i', strtotime($appt['start_datetime']));
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$appt_end = date('H:i', strtotime($appt['end_datetime']));
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if ($space_start < $appt_start && $space_end > $appt_end) {
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$found = TRUE;
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}
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}
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// It is also necessary to check that this time period doesn't
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// already exist in the "$empty_spaces_with_appointments" array.
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$empty_space = array(
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'start' => $space_start,
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'end' => $space_end
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);
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$already_exist = in_array($empty_space, $empty_spaces_with_appointments);
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if ($found === FALSE && $already_exist === FALSE) {
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$empty_spaces_with_appointments[] = $empty_space;
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}
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}
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}
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}
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} else {
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$empty_spaces_with_appointments = $empty_spaces_with_breaks;
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}
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$empty_spaces = $empty_spaces_with_appointments;
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// Calculate the available appointment hours for the given date.
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// The empty spaces are broken down to 15 min and if the service
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// fit in each quarter then a new available hour is added to the
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// $available hours array.
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$available_hours = array();
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foreach($empty_spaces as $space) {
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$start_hour = new DateTime($_POST['selected_date'] . ' ' . $space['start']);
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$end_hour = new DateTime($_POST['selected_date'] . ' ' . $space['end']);
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$minutes = $start_hour->format('i');
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if ($minutes % 15 != 0) {
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// Change the start hour of the current space in order to be
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// on of the following: 00, 15, 30, 45.
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if ($minutes < 15) {
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$start_hour->setTime($start_hour->format('H'), 15);
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} else if ($minutes < 30) {
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$start_hour->setTime($start_hour->format('H'), 30);
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} else if ($minutes < 45) {
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$start_hour->setTime($start_hour->format('H'), 45);
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} else {
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$start_hour->setTime($start_hour->format('H') + 1, 00);
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}
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}
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$curr_hour = $start_hour;
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$diff = $curr_hour->diff($end_hour);
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while(($diff->h * 60 + $diff->i) > intval($_POST['service_duration'])) {
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$available_hours[] = $curr_hour->format('H:i');
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$curr_hour->add(new DateInterval("PT15M"));
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$diff = $curr_hour->diff($end_hour);
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}
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}
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// If the selected date is today, remove past hours. It is important
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// include the timeout before booking that is set in the backoffice
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// the system. Normally we might want the customer to book an appointment
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// that is at least half or one hour from now. The setting is stored in
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// minutes.
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if (date('m/d/Y', strtotime($_POST['selected_date'])) == date('m/d/Y')) {
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if ($_POST['manage_mode'] === 'true') {
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$book_advance_timeout = 0;
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} else {
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$book_advance_timeout = $this->Settings_Model
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->get_setting('book_advance_timeout');
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}
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foreach($available_hours as $index=>$value) {
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$available_hour = strtotime($value);
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$current_hour = strtotime('+' . $book_advance_timeout
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. ' minutes', strtotime('now'));
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if ($available_hour <= $current_hour) {
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unset($available_hours[$index]);
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}
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}
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}
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$available_hours = array_values($available_hours);
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echo json_encode($available_hours);
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}
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/**
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* Synchronize appointment with its' providers google calendar.
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*
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* This method syncs the registered appointment with the
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* google calendar of the user.
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*
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* @task This method needs to be changed. Everytime a customer
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* books a new appointment the synchronization process must be
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* executed.
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*/
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public function google_sync($appointment_id) {
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try {
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$this->load->library('Google_Sync');
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$this->google_sync->sync_appointment($appointment_id);
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$view_data['message'] = 'Your appointment has been successfully added'
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. 'to Google Calendar!';
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$view_data['image'] = 'success.png';
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} catch (Exception $exc) {
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$view_data['message'] = 'An unexpected error occured during the sync '
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. 'operation: <br/><pre>' . $exc->getMessage() . '<br/>'
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. $exc->getTraceAsString() . '</pre>';
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$view_data['image'] = 'error.png';
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}
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$this->load->view('appointments/google_sync', $view_data);
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}
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}
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/* End of file appointments.php */
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/* Location: ./application/controllers/appointments.php */ |