easyappointments/application/controllers/Appointments.php
2022-03-04 18:04:53 +01:00

780 lines
31 KiB
PHP
Executable file

<?php defined('BASEPATH') or exit('No direct script access allowed');
/* ----------------------------------------------------------------------------
* Easy!Appointments - Open Source Web Scheduler
*
* @package EasyAppointments
* @author A.Tselegidis <alextselegidis@gmail.com>
* @copyright Copyright (c) 2013 - 2020, Alex Tselegidis
* @license https://opensource.org/licenses/GPL-3.0 - GPLv3
* @link https://easyappointments.org
* @since v1.0.0
* ---------------------------------------------------------------------------- */
/**
* Appointments Controller
*
* @package Controllers
*/
class Appointments extends EA_Controller {
/**
* Class Constructor
*/
public function __construct()
{
parent::__construct();
$this->load->helper('installation');
$this->load->helper('google_analytics');
$this->load->model('appointments_model');
$this->load->model('providers_model');
$this->load->model('admins_model');
$this->load->model('secretaries_model');
$this->load->model('services_model');
$this->load->model('customers_model');
$this->load->model('settings_model');
$this->load->library('timezones');
$this->load->library('synchronization');
$this->load->library('notifications');
$this->load->library('availability');
$this->load->driver('cache', ['adapter' => 'file']);
}
/**
* 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 $appointment_hash The appointment hash identifier.
*/
public function index($appointment_hash = '')
{
try
{
if ( ! is_app_installed())
{
redirect('installation/index');
return;
}
$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');
$book_advance_timeout = $this->settings_model->get_setting('book_advance_timeout');
$date_format = $this->settings_model->get_setting('date_format');
$time_format = $this->settings_model->get_setting('time_format');
$first_weekday = $this->settings_model->get_setting('first_weekday');
$require_phone_number = $this->settings_model->get_setting('require_phone_number');
$display_cookie_notice = $this->settings_model->get_setting('display_cookie_notice');
$cookie_notice_content = $this->settings_model->get_setting('cookie_notice_content');
$display_terms_and_conditions = $this->settings_model->get_setting('display_terms_and_conditions');
$terms_and_conditions_content = $this->settings_model->get_setting('terms_and_conditions_content');
$display_privacy_policy = $this->settings_model->get_setting('display_privacy_policy');
$privacy_policy_content = $this->settings_model->get_setting('privacy_policy_content');
$display_any_provider = $this->settings_model->get_setting('display_any_provider');
$timezones = $this->timezones->to_array();
// Remove the data that are not needed inside the $available_providers array.
foreach ($available_providers as $index => $provider)
{
$stripped_data = [
'id' => $provider['id'],
'first_name' => $provider['first_name'],
'last_name' => $provider['last_name'],
'services' => $provider['services'],
'timezone' => $provider['timezone']
];
$available_providers[$index] = $stripped_data;
}
// Remove the data that are not needed inside the $available_services array.
foreach ($available_services as $index => $service)
{
$stripped_data = [
'id' => $service['id'],
'name' => $service['name'],
'duration' => $service['duration'],
'location' => $service['location'],
'price' => $service['price'],
'currency' => $service['currency'],
'description' => $service['description'],
'category_id' => $service['category_id'],
'category_name' => $service['category_name']
];
$available_services[$index] = $stripped_data;
}
// If an appointment hash is provided then it means that the customer is trying to edit a registered
// appointment record.
if ($appointment_hash !== '')
{
// Load the appointments data and enable the manage mode of the page.
$manage_mode = TRUE;
$results = $this->appointments_model->get_batch(['hash' => $appointment_hash]);
if (empty($results))
{
// The requested appointment doesn't exist in the database. Display a message to the customer.
$variables = [
'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', $variables);
return;
}
// If the requested appointment begin date is lower than book_advance_timeout. Display a message to the
// customer.
$startDate = strtotime($results[0]['start_datetime']);
$limit = strtotime('+' . $book_advance_timeout . ' minutes', strtotime('now'));
if ($startDate < $limit)
{
$hours = floor($book_advance_timeout / 60);
$minutes = ($book_advance_timeout % 60);
$view = [
'message_title' => lang('appointment_locked'),
'message_text' => strtr(lang('appointment_locked_message'), [
'{$limit}' => sprintf('%02d:%02d', $hours, $minutes)
]),
'message_icon' => base_url('assets/img/error.png')
];
$this->load->view('appointments/message', $view);
return;
}
$appointment = $results[0];
$appointment = [
'id' => $appointment['id'],
'hash' => $appointment['hash'],
'start_datetime' => $appointment['start_datetime'],
'end_datetime' => $appointment['end_datetime'],
'id_services' => $appointment['id_services'],
'id_users_customer' => $appointment['id_users_customer'],
'id_users_provider' => $appointment['id_users_provider'],
'notes' => $appointment['notes']
];
$provider = $this->providers_model->get_row($appointment['id_users_provider']);
$provider = [
'id' => $provider['id'],
'first_name' => $provider['first_name'],
'last_name' => $provider['last_name'],
'services' => $provider['services'],
'timezone' => $provider['timezone']
];
$customer = $this->customers_model->get_row($appointment['id_users_customer']);
$customer = [
'id' => $customer['id'],
'first_name' => $customer['first_name'],
'last_name' => $customer['last_name'],
'email' => $customer['email'],
'phone_number' => $customer['phone_number'],
'timezone' => $customer['timezone'],
'address' => $customer['address'],
'city' => $customer['city'],
'zip_code' => $customer['zip_code']
];
$customer_token = md5(uniqid(mt_rand(), TRUE));
// Save the token for 10 minutes.
$this->cache->save('customer-token-' . $customer_token, $customer['id'], 600);
}
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;
$customer_token = FALSE;
$appointment = [];
$provider = [];
$customer = [];
}
// Load the book appointment view.
$variables = [
'available_services' => $available_services,
'available_providers' => $available_providers,
'company_name' => $company_name,
'manage_mode' => $manage_mode,
'customer_token' => $customer_token,
'date_format' => $date_format,
'time_format' => $time_format,
'first_weekday' => $first_weekday,
'require_phone_number' => $require_phone_number,
'appointment_data' => $appointment,
'provider_data' => $provider,
'customer_data' => $customer,
'display_cookie_notice' => $display_cookie_notice,
'cookie_notice_content' => $cookie_notice_content,
'display_terms_and_conditions' => $display_terms_and_conditions,
'terms_and_conditions_content' => $terms_and_conditions_content,
'display_privacy_policy' => $display_privacy_policy,
'privacy_policy_content' => $privacy_policy_content,
'timezones' => $timezones,
'display_any_provider' => $display_any_provider,
];
}
catch (Exception $exception)
{
$variables['exceptions'][] = $exception;
}
$this->load->view('appointments/book', $variables);
}
/**
* 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 $appointment_hash This appointment hash identifier.
*/
public function cancel($appointment_hash)
{
try
{
$cancel_reason = $this->input->post('cancel_reason');
if ($this->input->method() !== 'post' || empty($cancel_reason))
{
show_error('Bad Request', 400);
}
// Check whether the appointment hash exists in the database.
$appointments = $this->appointments_model->get_batch(['hash' => $appointment_hash]);
if (empty($appointments))
{
throw new Exception('No record matches the provided hash.');
}
$appointment = $appointments[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']);
$settings = [
'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'),
'date_format' => $this->settings_model->get_setting('date_format'),
'time_format' => $this->settings_model->get_setting('time_format')
];
// Remove the appointment record from the data.
if ( ! $this->appointments_model->delete($appointment['id']))
{
throw new Exception('Appointment could not be deleted from the database.');
}
$this->synchronization->sync_appointment_deleted($appointment, $provider);
$this->notifications->notify_appointment_deleted($appointment, $service, $provider, $customer, $settings);
}
catch (Exception $exception)
{
// Display the error message to the customer.
$exceptions[] = $exception;
}
$view = [
'message_title' => lang('appointment_cancelled_title'),
'message_text' => lang('appointment_cancelled'),
'message_icon' => base_url('assets/img/success.png')
];
if (isset($exceptions))
{
$view['exceptions'] = $exceptions;
}
$this->load->view('appointments/message', $view);
}
/**
* GET a specific appointment book and redirect to the success screen.
*
* @param string $appointment_hash The appointment hash identifier.
*
* @throws Exception
*/
public function book_success($appointment_hash)
{
$appointments = $this->appointments_model->get_batch(['hash' => $appointment_hash]);
if (empty($appointments))
{
$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];
$customer = $this->customers_model->get_row($appointment['id_users_customer']);
$provider = $this->providers_model->get_row($appointment['id_users_provider']);
$service = $this->services_model->get_row($appointment['id_services']);
$company_name = $this->settings_model->get_setting('company_name');
$provider_timezone_instance = new DateTimeZone($provider['timezone']);
$utc_timezone_instance = new DateTimeZone('UTC');
$appointment_start_instance = new DateTime($appointment['start_datetime'], $provider_timezone_instance);
$appointment_start_instance->setTimezone($utc_timezone_instance);
$appointment_end_instance = new DateTime($appointment['end_datetime'], $provider_timezone_instance);
$appointment_end_instance->setTimezone($utc_timezone_instance);
$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');
$view = [
'appointment_data' => [
'start_datetime' => $appointment['start_datetime'],
'end_datetime' => $appointment['end_datetime'],
],
'provider_data' => [
'first_name' => $provider['first_name'],
'last_name' => $provider['last_name'],
'email' => $provider['email'],
'timezone' => $provider['timezone'],
],
'customer_data' => [
'first_name' => $customer['first_name'],
'last_name' => $customer['last_name'],
'email' => $customer['email'],
'timezone' => $customer['timezone'],
],
'service_data' => [
'name' => $service['name'],
],
'company_name' => $company_name,
'add_to_google_url' => $add_to_google_url,
];
if ($exceptions)
{
$view['exceptions'] = $exceptions;
}
$this->load->view('appointments/book_success', $view);
}
/**
* Get the available appointment hours for the given date.
*
* This method answers to an AJAX request. It calculates the available hours for the given service, provider and
* date.
*
* Outputs a JSON string with the availabilities.
*/
public function ajax_get_available_hours()
{
try
{
$provider_id = $this->input->post('provider_id');
$service_id = $this->input->post('service_id');
$selected_date = $this->input->post('selected_date');
// Do not continue if there was no provider selected (more likely there is no provider in the system).
if (empty($provider_id))
{
$this->output
->set_content_type('application/json')
->set_output(json_encode([]));
return;
}
// 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_appointment_id = $this->input->post('manage_mode') === 'true' ? $this->input->post('appointment_id') : NULL;
// If the user has selected the "any-provider" option then we will need to search for an available provider
// that will provide the requested service.
if ($provider_id === ANY_PROVIDER)
{
$provider_id = $this->search_any_provider($service_id, $selected_date);
if ($provider_id === NULL)
{
$this->output
->set_content_type('application/json')
->set_output(json_encode([]));
return;
}
}
$service = $this->services_model->get_row($service_id);
$provider = $this->providers_model->get_row($provider_id);
$response = $this->availability->get_available_hours($selected_date, $service, $provider, $exclude_appointment_id);
}
catch (Exception $exception)
{
$this->output->set_status_header(500);
$response = [
'message' => $exception->getMessage(),
'trace' => config('debug') ? $exception->getTrace() : []
];
}
$this->output
->set_content_type('application/json')
->set_output(json_encode($response));
}
/**
* Search for any provider that can handle the requested service.
*
* This method will return the database ID of the provider with the most available periods.
*
* @param int $service_id The requested service ID.
* @param string $date The date to be searched (Y-m-d).
* @param string $hour The hour to be searched (H:i).
*
* @return int Returns the ID of the provider that can provide the service at the selected date.
*
* @throws Exception
*/
protected function search_any_provider($service_id, $date, $hour = NULL)
{
$available_providers = $this->providers_model->get_available_providers();
$service = $this->services_model->get_row($service_id);
$provider_id = NULL;
$max_hours_count = 0;
foreach ($available_providers as $provider)
{
foreach ($provider['services'] as $provider_service_id)
{
if ($provider_service_id == $service_id)
{
// Check if the provider is available for the requested date.
$available_hours = $this->availability->get_available_hours($date, $service, $provider);
if (count($available_hours) > $max_hours_count && (empty($hour) || in_array($hour, $available_hours, FALSE)))
{
$provider_id = $provider['id'];
$max_hours_count = count($available_hours);
}
}
}
}
return $provider_id;
}
/**
* Register the appointment to the database.
*
* Outputs a JSON string with the appointment ID.
*/
public function ajax_register_appointment()
{
try
{
$post_data = $this->input->post('post_data');
$captcha = $this->input->post('captcha');
$manage_mode = filter_var($post_data['manage_mode'], FILTER_VALIDATE_BOOLEAN);
$appointment = $post_data['appointment'];
$customer = $post_data['customer'];
// Check appointment availability before registering it to the database.
$appointment['id_users_provider'] = $this->check_datetime_availability();
if ( ! $appointment['id_users_provider'])
{
throw new Exception(lang('requested_hour_is_unavailable'));
}
$provider = $this->providers_model->get_row($appointment['id_users_provider']);
$service = $this->services_model->get_row($appointment['id_services']);
$require_captcha = $this->settings_model->get_setting('require_captcha');
$captcha_phrase = $this->session->userdata('captcha_phrase');
// Validate the CAPTCHA string.
if ($require_captcha === '1' && strtolower($captcha_phrase) !== strtolower($captcha))
{
$this->output
->set_content_type('application/json')
->set_output(json_encode([
'captcha_verification' => FALSE
]));
return;
}
if ($this->customers_model->exists($customer))
{
$customer['id'] = $this->customers_model->find_record_id($customer);
}
if (empty($appointment['location']) && ! empty($service['location']))
{
$appointment['location'] = $service['location'];
}
// Save customer language (the language which is used to render the booking page).
$customer['language'] = config('language');
$customer_id = $this->customers_model->add($customer);
$appointment_start_instance = new DateTime($appointment['start_datetime']);
$appointment['end_datetime'] = $appointment_start_instance
->add(new DateInterval('PT' . $service['duration'] . 'M'))
->format('Y-m-d H:i:s');
if ( ! in_array($service['id'], $provider['services']))
{
throw new Exception('Invalid provider record selected for appointment.');
}
$appointment['id_users_customer'] = $customer_id;
$appointment['is_unavailable'] = (int)$appointment['is_unavailable']; // needs to be type casted
$appointment['id'] = $this->appointments_model->add($appointment);
$appointment['hash'] = $this->appointments_model->get_value('hash', $appointment['id']);
$settings = [
'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'),
'date_format' => $this->settings_model->get_setting('date_format'),
'time_format' => $this->settings_model->get_setting('time_format')
];
$this->synchronization->sync_appointment_saved($appointment, $service, $provider, $customer, $settings, $manage_mode);
$this->notifications->notify_appointment_saved($appointment, $service, $provider, $customer, $settings, $manage_mode);
$response = [
'appointment_id' => $appointment['id'],
'appointment_hash' => $appointment['hash']
];
}
catch (Exception $exception)
{
$this->output->set_status_header(500);
$response = [
'message' => $exception->getMessage(),
'trace' => config('debug') ? $exception->getTrace() : []
];
}
$this->output
->set_content_type('application/json')
->set_output(json_encode($response));
}
/**
* 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 preferred 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.
*
* @return int Returns the ID of the provider that is available for the appointment.
*
* @throws Exception
*/
protected function check_datetime_availability()
{
$post_data = $this->input->post('post_data');
$appointment = $post_data['appointment'];
$appointment_start = new DateTime($appointment['start_datetime']);
$date = $appointment_start->format('Y-m-d');
$hour = $appointment_start->format('H:i');
if ($appointment['id_users_provider'] === ANY_PROVIDER)
{
$appointment['id_users_provider'] = $this->search_any_provider($appointment['id_services'], $date, $hour);
return $appointment['id_users_provider'];
}
$service = $this->services_model->get_row($appointment['id_services']);
$exclude_appointment_id = isset($appointment['id']) ? $appointment['id'] : NULL;
$provider = $this->providers_model->get_row($appointment['id_users_provider']);
$available_hours = $this->availability->get_available_hours($date, $service, $provider, $exclude_appointment_id);
$is_still_available = FALSE;
$appointment_hour = date('H:i', strtotime($appointment['start_datetime']));
foreach ($available_hours as $available_hour)
{
if ($appointment_hour === $available_hour)
{
$is_still_available = TRUE;
break;
}
}
return $is_still_available ? $appointment['id_users_provider'] : NULL;
}
/**
* Get Unavailable Dates
*
* Get an array with the available dates of a specific provider, service and month of the year. Provide the
* "provider_id", "service_id" and "selected_date" as GET parameters to the request. The "selected_date" parameter
* must have the Y-m-d format.
*
* Outputs a JSON string with the unavailable dates. that are unavailable.
*/
public function ajax_get_unavailable_dates()
{
try
{
$provider_id = $this->input->get('provider_id');
$service_id = $this->input->get('service_id');
$appointment_id = $this->input->get_post('appointment_id');
$manage_mode = $this->input->get_post('manage_mode');
$selected_date_string = $this->input->get('selected_date');
$selected_date = new DateTime($selected_date_string);
$number_of_days_in_month = (int)$selected_date->format('t');
$unavailable_dates = [];
$provider_ids = $provider_id === ANY_PROVIDER
? $this->search_providers_by_service($service_id)
: [$provider_id];
$exclude_appointment_id = $manage_mode ? $appointment_id : NULL;
// Get the service record.
$service = $this->services_model->get_row($service_id);
for ($i = 1; $i <= $number_of_days_in_month; $i++)
{
$current_date = new DateTime($selected_date->format('Y-m') . '-' . $i);
if ($current_date < new DateTime(date('Y-m-d 00:00:00')))
{
// Past dates become immediately unavailable.
$unavailable_dates[] = $current_date->format('Y-m-d');
continue;
}
// Finding at least one slot of availability.
foreach ($provider_ids as $current_provider_id)
{
$provider = $this->providers_model->get_row($current_provider_id);
$available_hours = $this->availability->get_available_hours(
$current_date->format('Y-m-d'),
$service,
$provider,
$exclude_appointment_id
);
if ( ! empty($available_hours))
{
break;
}
}
// No availability amongst all the provider.
if (empty($available_hours))
{
$unavailable_dates[] = $current_date->format('Y-m-d');
}
}
$response = $unavailable_dates;
}
catch (Exception $exception)
{
$this->output->set_status_header(500);
$response = [
'message' => $exception->getMessage(),
'trace' => config('debug') ? $exception->getTrace() : []
];
}
$this->output
->set_content_type('application/json')
->set_output(json_encode($response));
}
/**
* Search for any provider that can handle the requested service.
*
* This method will return the database ID of the providers affected to the requested service.
*
* @param int $service_id The requested service ID.
*
* @return array Returns the ID of the provider that can provide the requested service.
*/
protected function search_providers_by_service($service_id)
{
$available_providers = $this->providers_model->get_available_providers();
$provider_list = [];
foreach ($available_providers as $provider)
{
foreach ($provider['services'] as $provider_service_id)
{
if ($provider_service_id === $service_id)
{
// Check if the provider is affected to the selected service.
$provider_list[] = $provider['id'];
}
}
}
return $provider_list;
}
}