easyappointments/application/controllers/Appointments.php

1473 lines
58 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 http://opensource.org/licenses/GPL-3.0 - GPLv3
* @link http://easyappointments.org
* @since v1.0.0
* ---------------------------------------------------------------------------- */
use EA\Engine\Notifications\Email as EmailClient;
use EA\Engine\Types\Email;
use EA\Engine\Types\Text;
use EA\Engine\Types\Url;
/**
* Appointments Controller
*
* @property CI_Session session
* @property CI_Loader load
* @property CI_Input input
* @property CI_Output output
* @property CI_Config config
* @property CI_Lang lang
* @property CI_Cache cache
* @property CI_DB_query_builder db
* @property CI_Security security
* @property Google_Sync google_sync
* @property Ics_file ics_file
* @property Appointments_Model appointments_model
* @property Providers_Model providers_model
* @property Services_Model services_model
* @property Customers_Model customers_model
* @property Settings_Model settings_model
* @property Timezones timezones
* @property Roles_Model roles_model
* @property Secretaries_Model secretaries_model
* @property Admins_Model admins_model
* @property User_Model user_model
*
* @package Controllers
*/
class Appointments extends CI_Controller {
/**
* Class Constructor
*/
public function __construct()
{
parent::__construct();
$this->load->library('session');
$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');
$this->load->library('timezones');
if ($this->session->userdata('language'))
{
// Set the user's selected language.
$this->config->set_item('language', $this->session->userdata('language'));
$this->lang->load('translations', $this->session->userdata('language'));
}
else
{
// Set the default language.
$this->lang->load('translations', $this->config->item('language'));
}
}
/**
* 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');
$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] = $stripped_data;
}
// If an appointment hash is provided then it means that the customer is trying to edit a registered
// appointment record.
if ($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;
}
$appointment = $results[0];
$provider = $this->providers_model->get_row($appointment['id_users_provider']);
$customer = $this->customers_model->get_row($appointment['id_users_customer']);
$customer_token = md5(uniqid(mt_rand(), TRUE));
$this->load->driver('cache', ['adapter' => 'file']);
// 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
{
// 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.');
}
// Remove the appointment from Google Calendar if needed.
if ($appointment['id_google_calendar'] != NULL)
{
try
{
$google_sync = filter_var(
$this->providers_model->get_setting('google_sync', $appointment['id_users_provider']),
FILTER_VALIDATE_BOOLEAN);
if ($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 $exception)
{
$exceptions[] = $exception;
}
}
// Send email notification to customer and provider.
try
{
$email = new EmailClient($this, $this->config->config);
$send_provider = filter_var($this->providers_model
->get_setting('notifications', $provider['id']),
FILTER_VALIDATE_BOOLEAN);
if ($send_provider === TRUE)
{
$email->sendDeleteAppointment($appointment, $provider,
$service, $customer, $settings, new Email($provider['email']),
new Text($this->input->post('cancel_reason')));
}
$send_customer = filter_var(
$this->settings_model->get_setting('customer_notifications'),
FILTER_VALIDATE_BOOLEAN);
if ($send_customer === TRUE)
{
$email->sendDeleteAppointment($appointment, $provider,
$service, $customer, $settings, new Email($customer['email']),
new Text($this->input->post('cancel_reason')));
}
// Notify admins
$admins = $this->admins_model->get_batch();
foreach($admins as $admin)
{
if (!$admin['settings']['notifications'] === '0')
{
continue;
}
$email->sendDeleteAppointment($appointment, $provider,
$service, $customer, $settings, new Email($admin['email']),
new Text($this->input->post('cancel_reason')));
}
// Notify secretaries
$secretaries = $this->secretaries_model->get_batch();
foreach($secretaries as $secretary)
{
if (!$secretary['settings']['notifications'] === '0')
{
continue;
}
if (in_array($provider['id'], $secretary['providers']))
{
continue;
}
$email->sendDeleteAppointment($appointment, $provider,
$service, $customer, $settings, new Email($secretary['email']),
new Text($this->input->post('cancel_reason')));
}
}
catch (Exception $exception)
{
$exceptions[] = $exception;
}
}
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 an 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))
{
redirect('appointments'); // The appointment does not exist.
return;
}
$appointment = $appointments[0];
unset($appointment['notes']);
$provider = $this->providers_model->get_row($appointment['id_users_provider']);
unset($provider['settings'], $provider['notes']);
$service = $this->services_model->get_row($appointment['id_services']);
$company_name = $this->settings_model->get_setting('company_name');
// Get any pending exceptions.
$exceptions = $this->session->flashdata('book_success');
$view = [
'appointment_data' => $appointment,
'provider_data' => $provider,
'service_data' => $service,
'company_name' => $company_name,
];
if ($exceptions)
{
$view['exceptions'] = $exceptions;
}
$this->load->view('appointments/book_success', $view);
}
/**
* [AJAX] 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.
$exclude_appointments = [];
if ($this->input->post('manage_mode') === 'true')
{
$exclude_appointments[] = $this->input->post('appointment_id');
}
// If the user has selected the "any-provider" option then we will need to search for an available provider
// that will provide the requested service.
if ($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);
$empty_periods = $this->get_provider_available_time_periods($provider_id,
$selected_date, $exclude_appointments);
$available_hours = $this->calculate_available_hours($empty_periods, $selected_date,
$service['duration'], $service['availabilities_type']);
if ($service['attendants_number'] > 1)
{
$available_hours = $this->get_multiple_attendants_hours($selected_date, $service,
$provider);
}
$response = $this->consider_book_advance_timeout($selected_date, $available_hours, $provider);
}
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 $selected_date The date to be searched.
*
* @return int Returns the ID of the provider that can provide the service at the selected date.
*
* @throws Exception
*/
protected function search_any_provider($service_id, $selected_date)
{
$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.
$empty_periods = $this->get_provider_available_time_periods($provider['id'], $selected_date);
$available_hours = $this->calculate_available_hours($empty_periods, $selected_date,
$service['duration'], $service['availabilities_type']);
if ($service['attendants_number'] > 1)
{
$available_hours = $this->get_multiple_attendants_hours($selected_date, $service,
$provider);
}
if (count($available_hours) > $max_hours_count)
{
$provider_id = $provider['id'];
$max_hours_count = count($available_hours);
}
}
}
}
return $provider_id;
}
/**
* 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
* available 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 int $provider_id Provider record ID.
* @param string $selected_date Date to be checked (MySQL formatted string).
* @param array $excluded_appointment_ids Array containing 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.
*
* @throws Exception
*/
protected function get_provider_available_time_periods(
$provider_id,
$selected_date,
$excluded_appointment_ids = []
)
{
// Get the service, provider's working plan and provider appointments.
$working_plan = json_decode($this->providers_model->get_setting('working_plan', $provider_id), TRUE);
// Get the provider's custom availability periods.
$custom_availability_periods = json_decode($this->providers_model->get_setting('custom_availability_periods', $provider_id), TRUE);
$provider_appointments = $this->appointments_model->get_batch([
'id_users_provider' => $provider_id,
]);
// Sometimes it might be necessary to not take into account some appointment records in order to display what
// the providers' available time periods would be without them.
foreach ($excluded_appointment_ids as $excluded_appointment_id)
{
foreach ($provider_appointments as $index => $reserved)
{
if ($reserved['id'] == $excluded_appointment_id)
{
unset($provider_appointments[$index]);
}
}
}
// Find the empty spaces on the plan. The first split between the plan is due to a break (if any). 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)))];
// Search if the $selected_date is an custom availability period added outside the normal working plan.
if ($selected_date_working_plan == NULL)
{
if (isset($custom_availability_periods[strtolower(date('Y-m-d', strtotime($selected_date)))]))
{
$selected_date_working_plan = $custom_availability_periods[strtolower(date('Y-m-d', strtotime($selected_date)))];
}
}
$periods = [];
if (isset($selected_date_working_plan['breaks']))
{
$periods[] = [
'start' => $selected_date_working_plan['start'],
'end' => $selected_date_working_plan['end']
];
$day_start = new DateTime($selected_date_working_plan['start']);
$day_end = new DateTime($selected_date_working_plan['end']);
// Split the working plan to available time periods that do not contain the breaks in them.
foreach ($selected_date_working_plan['breaks'] as $index => $break)
{
$break_start = new DateTime($break['start']);
$break_end = new DateTime($break['end']);
if ($break_start < $day_start)
{
$break_start = $day_start;
}
if ($break_end > $day_end)
{
$break_end = $day_end;
}
if ($break_start >= $break_end)
{
continue;
}
foreach ($periods as $key => $period)
{
$period_start = new DateTime($period['start']);
$period_end = new DateTime($period['end']);
$remove_current_period = FALSE;
if ($break_start > $period_start && $break_start < $period_end && $break_end > $period_start)
{
$periods[] = [
'start' => $period_start->format('H:i'),
'end' => $break_start->format('H:i')
];
$remove_current_period = TRUE;
}
if ($break_start < $period_end && $break_end > $period_start && $break_end < $period_end)
{
$periods[] = [
'start' => $break_end->format('H:i'),
'end' => $period_end->format('H:i')
];
$remove_current_period = TRUE;
}
if ($break_start == $period_start && $break_end == $period_end)
{
$remove_current_period = TRUE;
}
if ($remove_current_period)
{
unset($periods[$key]);
}
}
}
}
// Break the empty periods with the reserved appointments.
foreach ($provider_appointments as $provider_appointment)
{
foreach ($periods as $index => &$period)
{
$appointment_start = new DateTime($provider_appointment['start_datetime']);
$appointment_end = new DateTime($provider_appointment['end_datetime']);
if ($appointment_start >= $appointment_end)
{
continue;
}
$period_start = new DateTime($selected_date . ' ' . $period['start']);
$period_end = new DateTime($selected_date . ' ' . $period['end']);
if ($appointment_start <= $period_start && $appointment_end <= $period_end && $appointment_end <= $period_start)
{
// The appointment does not belong in this time period, so we will not change anything.
continue;
}
else
{
if ($appointment_start <= $period_start && $appointment_end <= $period_end && $appointment_end >= $period_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'] = $appointment_end->format('H:i');
}
else
{
if ($appointment_start >= $period_start && $appointment_end < $period_end)
{
// The appointment is inside the time period, so we will split the period into two new
// others.
unset($periods[$index]);
$periods[] = [
'start' => $period_start->format('H:i'),
'end' => $appointment_start->format('H:i')
];
$periods[] = [
'start' => $appointment_end->format('H:i'),
'end' => $period_end->format('H:i')
];
}
else if ($appointment_start == $period_start && $appointment_end == $period_end)
{
unset($periods[$index]); // The whole period is blocked so remove it from the available periods array.
}
else
{
if ($appointment_start >= $period_start && $appointment_end >= $period_start && $appointment_start <= $period_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'] = $appointment_start->format('H:i');
}
else
{
if ($appointment_start >= $period_start && $appointment_end >= $period_end && $appointment_start >= $period_end)
{
// The appointment does not belong in the period so do not change anything.
continue;
}
else
{
if ($appointment_start <= $period_start && $appointment_end >= $period_end && $appointment_start <= $period_end)
{
// The appointment is bigger than the period, so this period needs to be removed.
unset($periods[$index]);
}
}
}
}
}
}
}
}
return array_values($periods);
}
/**
* Calculate the available appointment hours.
*
* 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.
*
* @param array $empty_periods Contains the empty periods as generated by the "get_provider_available_time_periods"
* method.
* @param string $selected_date The selected date to be search (format )
* @param int $service_duration The service duration is required for the hour calculation.
* @param string $availabilities_type Optional ('flexible'), the service availabilities type.
*
* @return array Returns an array with the available hours for the appointment.
* @throws Exception
*/
protected function calculate_available_hours(
array $empty_periods,
$selected_date,
$service_duration,
$availabilities_type = 'flexible'
)
{
$available_hours = [];
foreach ($empty_periods as $period)
{
$start_hour = new DateTime($selected_date . ' ' . $period['start']);
$end_hour = new DateTime($selected_date . ' ' . $period['end']);
$interval = $availabilities_type === AVAILABILITIES_TYPE_FIXED ? (int)$service_duration : 15;
$current_hour = $start_hour;
$diff = $current_hour->diff($end_hour);
while (($diff->h * 60 + $diff->i) >= intval($service_duration))
{
$available_hours[] = $current_hour->format('H:i');
$current_hour->add(new DateInterval('PT' . $interval . 'M'));
$diff = $current_hour->diff($end_hour);
}
}
return $available_hours;
}
/**
* Get multiple attendants hours.
*
* This method will add the additional appointment hours whenever a service accepts multiple attendants.
*
* @param string $selected_date The selected appointment date.
* @param array $service Selected service data.
* @param array $provider Selected provider data.
*
* @return array Returns the available hours array.
* @throws Exception
*/
protected function get_multiple_attendants_hours(
$selected_date,
$service,
$provider
)
{
$unavailability_events = $this->appointments_model->get_batch([
'is_unavailable' => TRUE,
'DATE(start_datetime)' => $selected_date,
'id_users_provider' => $provider['id']
]);
$working_plan = json_decode($provider['settings']['working_plan'], TRUE);
$working_day = strtolower(date('l', strtotime($selected_date)));
$working_hours = $working_plan[$working_day];
$periods = [
[
'start' => new DateTime($selected_date . ' ' . $working_hours['start']),
'end' => new DateTime($selected_date . ' ' . $working_hours['end'])
]
];
$periods = $this->remove_breaks($selected_date, $periods, $working_hours['breaks']);
$periods = $this->remove_unavailability_events($periods, $unavailability_events);
$hours = [];
$interval_value = $service['availabilities_type'] == AVAILABILITIES_TYPE_FIXED ? $service['duration'] : '15';
$interval = new DateInterval('PT' . (int)$interval_value . 'M');
$duration = new DateInterval('PT' . (int)$service['duration'] . 'M');
foreach ($periods as $period)
{
$slot_start = clone $period['start'];
$slot_end = clone $slot_start;
$slot_end->add($duration);
while ($slot_end <= $period['end'])
{
// Check reserved attendants for this time slot and see if current attendants fit.
$appointment_attendants_number = $this->appointments_model->get_attendants_number_for_period($slot_start,
$slot_end, $service['id']);
if ($appointment_attendants_number < $service['attendants_number'])
{
$hours[] = $slot_start->format('H:i');
}
$slot_start->add($interval);
$slot_end->add($interval);
}
}
return $hours;
}
/**
* Remove breaks from available time periods.
*
* @param string $selected_date Selected data (Y-m-d format).
* @param array $periods Time periods of the current date.
* @param array $breaks Breaks array for the current date.
*
* @return array Returns the available time periods without the breaks.
* @throws Exception
*/
public function remove_breaks($selected_date, $periods, $breaks)
{
if ( ! $breaks)
{
return $periods;
}
foreach ($breaks as $break)
{
$break_start = new DateTime($selected_date . ' ' . $break['start']);
$break_end = new DateTime($selected_date . ' ' . $break['end']);
foreach ($periods as &$period)
{
$period_start = $period['start'];
$period_end = $period['end'];
if ($break_start <= $period_start && $break_end >= $period_start && $break_end <= $period_end)
{
// left
$period['start'] = $break_end;
continue;
}
if ($break_start >= $period_start && $break_start <= $period_end && $break_end >= $period_start && $break_end <= $period_end)
{
// middle
$period['end'] = $break_start;
$periods[] = [
'start' => $break_end,
'end' => $period_end
];
continue;
}
if ($break_start >= $period_start && $break_start <= $period_end && $break_end >= $period_end)
{
// right
$period['end'] = $break_start;
continue;
}
if ($break_start <= $period_start && $break_end >= $period_end)
{
// break contains period
$period['start'] = $break_end;
continue;
}
}
}
return $periods;
}
/**
* Remove the unavailability entries from the available time periods of the selected date.
*
* @param array $periods Available time periods.
* @param array $unavailability_events Unavailability events of the current date.
*
* @return array Returns the available time periods without the unavailability events.
*
* @throws Exception
*/
public function remove_unavailability_events($periods, $unavailability_events)
{
foreach ($unavailability_events as $unavailability_event)
{
$unavailability_start = new DateTime($unavailability_event['start_datetime']);
$unavailability_end = new DateTime($unavailability_event['end_datetime']);
foreach ($periods as &$period)
{
$period_start = $period['start'];
$period_end = $period['end'];
if ($unavailability_start <= $period_start && $unavailability_end >= $period_start && $unavailability_end <= $period_end)
{
// left
$period['start'] = $unavailability_end;
continue;
}
if ($unavailability_start >= $period_start && $unavailability_start <= $period_end && $unavailability_end >= $period_start && $unavailability_end <= $period_end)
{
// middle
$period['end'] = $unavailability_start;
$periods[] = [
'start' => $unavailability_end,
'end' => $period_end
];
continue;
}
if ($unavailability_start >= $period_start && $unavailability_start <= $period_end && $unavailability_end >= $period_end)
{
// right
$period['end'] = $unavailability_start;
continue;
}
if ($unavailability_start <= $period_start && $unavailability_end >= $period_end)
{
// Unavailability contains period
$period['start'] = $unavailability_end;
continue;
}
}
}
return $periods;
}
/**
* [AJAX] Register the appointment to the database.
*
* Outputs a JSON string with the appointment ID.
*/
public function ajax_register_appointment()
{
try
{
$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');
$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' && $captcha_phrase !== $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'];
}
$customer_id = $this->customers_model->add($customer);
$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')
];
// Synchronize the appointment with the provider's Google Calendar.
try
{
$google_sync = filter_var(
$this->providers_model->get_setting('google_sync', $appointment['id_users_provider']),
FILTER_VALIDATE_BOOLEAN);
if ($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 ($manage_mode === FALSE)
{
// Add appointment to Google Calendar.
$google_event = $this->google_sync->add_appointment($appointment, $provider,
$service, $customer, $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, $settings);
}
}
}
catch (Exception $exception)
{
log_message('error', $exception->getMessage());
log_message('error', $exception->getTraceAsString());
}
// Send email notifications to customer and provider.
try
{
$this->config->load('email');
$email = new EmailClient($this, $this->config->config);
if ($manage_mode === FALSE)
{
$customer_title = new Text(lang('appointment_booked'));
$customer_message = new Text(lang('thank_you_for_appointment'));
$provider_title = new Text(lang('appointment_added_to_your_plan'));
$provider_message = new Text(lang('appointment_link_description'));
}
else
{
$customer_title = new Text(lang('appointment_changes_saved'));
$customer_message = new Text('');
$provider_title = new Text(lang('appointment_details_changed'));
$provider_message = new Text('');
}
$customer_link = new Url(site_url('appointments/index/' . $appointment['hash']));
$provider_link = new Url(site_url('backend/index/' . $appointment['hash']));
$send_customer = filter_var(
$this->settings_model->get_setting('customer_notifications'),
FILTER_VALIDATE_BOOLEAN);
$this->load->library('ics_file');
$ics_stream = $this->ics_file->get_stream($appointment, $service, $provider, $customer);
if ($send_customer === TRUE)
{
$email->sendAppointmentDetails($appointment, $provider,
$service, $customer, $settings, $customer_title,
$customer_message, $customer_link, new Email($customer['email']), new Text($ics_stream));
}
$send_provider = filter_var(
$this->providers_model->get_setting('notifications', $provider['id']),
FILTER_VALIDATE_BOOLEAN);
if ($send_provider === TRUE)
{
$email->sendAppointmentDetails($appointment, $provider,
$service, $customer, $settings, $provider_title,
$provider_message, $provider_link, new Email($provider['email']), new Text($ics_stream));
}
// Notify admins
$admins = $this->admins_model->get_batch();
foreach($admins as $admin)
{
if (!$admin['settings']['notifications'] === '0')
{
continue;
}
$email->sendAppointmentDetails($appointment, $provider,
$service, $customer, $settings, $provider_title,
$provider_message, $provider_link, new Email($admin['email']), new Text($ics_stream));
}
// Notify secretaries
$secretaries = $this->secretaries_model->get_batch();
foreach($secretaries as $secretary)
{
if (!$secretary['settings']['notifications'] === '0')
{
continue;
}
if (in_array($provider['id'], $secretary['providers']))
{
continue;
}
$email->sendAppointmentDetails($appointment, $provider,
$service, $customer, $settings, $provider_title,
$provider_message, $provider_link, new Email($secretary['email']), new Text($ics_stream));
}
}
catch (Exception $exception)
{
log_message('error', $exception->getMessage());
log_message('error', $exception->getTraceAsString());
}
$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()
{
$this->load->model('services_model');
$this->load->model('appointments_model');
$post_data = $this->input->post('post_data');
$appointment = $post_data['appointment'];
$service_duration = $this->services_model->get_value('duration', $appointment['id_services']);
$exclude_appointments = [];
if (isset($appointment['id']))
{
$exclude_appointments[] = $appointment['id'];
}
$attendants_number = $this->services_model->get_value('attendants_number', $appointment['id_services']);
if ($attendants_number > 1)
{
// Exclude all the appointments that are currently registered.
$existing_appointments = $this->appointments_model->get_batch([
'id_services' => $appointment['id_services'],
'start_datetime' => $appointment['start_datetime']
]);
if ( ! empty($existing_appointments) && count($existing_appointments) < $attendants_number)
{
foreach ($existing_appointments as $existing_appointment)
{
$exclude_appointments[] = $existing_appointment['id'];
}
}
}
if ($appointment['id_users_provider'] === ANY_PROVIDER)
{
$appointment['id_users_provider'] = $this->search_any_provider($appointment['id_services'],
date('Y-m-d', strtotime($appointment['start_datetime'])));
return $appointment['id_users_provider'];
}
$available_periods = $this->get_provider_available_time_periods(
$appointment['id_users_provider'],
date('Y-m-d', strtotime($appointment['start_datetime'])),
$exclude_appointments);
$is_still_available = FALSE;
foreach ($available_periods as $period)
{
$appt_start = new DateTime($appointment['start_datetime']);
$appt_start = $appt_start->format('H:i');
$appt_end = new DateTime($appointment['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;
}
}
return $is_still_available ? $appointment['id_users_provider'] : NULL;
}
/**
* [AJAX] 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
{
$this->load->model('providers_model');
$this->load->model('services_model');
$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 = [];
$exclude_appointments = [];
if ($manage_mode === 'true')
{
$exclude_appointments[] = $appointment_id;
}
$provider_list = $provider_id === ANY_PROVIDER
? $this->search_providers_by_service($service_id)
: [$provider_id];
// 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_list as $current_provider_id)
{
// Get the provider record.
$current_provider = $this->providers_model->get_row($current_provider_id);
$empty_periods = $this->get_provider_available_time_periods($current_provider_id,
$current_date->format('Y-m-d'), $exclude_appointments);
$available_hours = $this->calculate_available_hours($empty_periods, $current_date->format('Y-m-d'),
$service['duration'], $service['availabilities_type']);
if ( ! empty($available_hours))
{
break;
}
if ($service['attendants_number'] > 1)
{
$available_hours = $this->get_multiple_attendants_hours($current_date->format('Y-m-d'),
$service, $current_provider);
if ( ! empty($available_hours))
{
break;
}
}
$available_hours = $this->consider_book_advance_timeout($current_date->format('Y-m-d'),
$available_hours, $current_provider);
}
// No availability amongst all the provider.
if (empty($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)
{
$this->load->model('providers_model');
$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;
}
/**
* Consider the book advance timeout and remove available hours that have passed the threshold.
*
* If the selected date is today, remove past hours. It is important include the timeout before booking
* that is set in the back-office 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.
*
* @param string $selected_date The selected date.
* @param array $available_hours Already generated available hours.
* @param array $provider Provider information.
*
* @return array Returns the updated available hours.
*
* @throws Exception
*/
protected function consider_book_advance_timeout($selected_date, $available_hours, $provider)
{
$provider_timezone = new DateTimeZone($provider['timezone']);
$book_advance_timeout = $this->settings_model->get_setting('book_advance_timeout');
$threshold = new DateTime('+' . $book_advance_timeout . ' minutes', $provider_timezone);
foreach ($available_hours as $index => $value)
{
$available_hour = new DateTime($selected_date . ' ' . $value, $provider_timezone);
if ($available_hour->getTimestamp() <= $threshold->getTimestamp())
{
unset($available_hours[$index]);
}
}
$available_hours = array_values($available_hours);
sort($available_hours, SORT_STRING);
return array_values($available_hours);
}
}