iflrandevu/src/application/controllers/appointments.php
alextselegidis@gmail.com 08a50c14be * Added username validation (username must be unique for every record).
* Admins can manage the working plan of a single provider on the backend/users page.
* Before sending a new notification email the system checks whether the provider user has notifications enabled.
* Added salt field in the "ea_user_settings" table.
2013-09-24 13:09:04 +00:00

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PHP

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Appointments extends CI_Controller {
/**
* Default callback method of the application.
*
* This method creates the appointment book wizard. If an appointment hash
* is provided then it means that the customer followed the appointment
* manage link that was send with the book success email.
*
* @param string $appointment_hash The db appointment hash of an existing
* record.
*/
public function index($appointment_hash = '') {
$this->load->model('appointments_model');
$this->load->model('providers_model');
$this->load->model('services_model');
$this->load->model('customers_model');
$this->load->model('settings_model');
if (strtoupper($_SERVER['REQUEST_METHOD']) !== 'POST') {
try {
$available_services = $this->services_model->get_available_services();
$available_providers = $this->providers_model->get_available_providers();
$company_name = $this->settings_model->get_setting('company_name');
// If an appointment hash is provided then it means that the customer
// is trying to edit a registered appointment record.
if ($appointment_hash !== ''){
// Load the appointments data and enable the manage mode of the page.
$manage_mode = TRUE;
$results = $this->appointments_model->get_batch(array('hash' => $appointment_hash));
if (count($results) === 0) {
// The requested appointment doesn't exist in the database. Display
// a message to the customer.
$view = array(
'message_title' => 'Appointment Not Found!',
'message_text' => 'The appointment you requested does not exist in '
. 'the system database anymore.',
'message_icon' => $this->config->item('base_url')
. 'assets/images/error.png'
);
$this->load->view('appointments/message', $view);
return;
}
$appointment = $results[0];
$provider = $this->providers_model->get_row($appointment['id_users_provider']);
$customer = $this->customers_model->get_row($appointment['id_users_customer']);
} else {
// The customer is going to book a new appointment so there is no
// need for the manage functionality to be initialized.
$manage_mode = FALSE;
$appointment = array();
$provider = array();
$customer = array();
}
// Load the book appointment view.
$view = array (
'available_services' => $available_services,
'available_providers' => $available_providers,
'company_name' => $company_name,
'manage_mode' => $manage_mode,
'appointment_data' => $appointment,
'provider_data' => $provider,
'customer_data' => $customer
);
} catch(Exception $exc) {
$view['exceptions'][] = $exc;
}
$this->load->view('appointments/book', $view);
} else {
// The page is a post-back. Register the appointment and send notification emails
// to the provider and the customer that are related to the appointment. If google
// sync is enabled then add the appointment to the provider's account.
try {
$post_data = json_decode($_POST['post_data'], true);
$appointment = $post_data['appointment'];
$customer = $post_data['customer'];
$customer_id = $this->customers_model->add($customer);
$appointment['id_users_customer'] = $customer_id;
$appointment['id'] = $this->appointments_model->add($appointment);
$appointment['hash'] = $this->appointments_model->get_value('hash', $appointment['id']);
$provider = $this->providers_model->get_row($appointment['id_users_provider']);
$service = $this->services_model->get_row($appointment['id_services']);
$company_settings = array(
'company_name' => $this->settings_model->get_setting('company_name'),
'company_link' => $this->settings_model->get_setting('company_link'),
'company_email' => $this->settings_model->get_setting('company_email')
);
// :: SYNCHRONIZE APPOINTMENT WITH PROVIDER'S GOOGLE CALENDAR
// The provider must have previously granted access to his google calendar account
// in order to sync the appointment.
try {
$google_sync = $this->providers_model->get_setting('google_sync',
$appointment['id_users_provider']);
if ($google_sync == TRUE) {
$google_token = json_decode($this->providers_model
->get_setting('google_token', $appointment['id_users_provider']));
$this->load->library('google_sync');
$this->google_sync->refresh_token($google_token->refresh_token);
if ($post_data['manage_mode'] === FALSE) {
// Add appointment to Google Calendar.
$google_event = $this->google_sync->add_appointment($appointment, $provider,
$service, $customer, $company_settings);
$appointment['id_google_calendar'] = $google_event->id;
$this->appointments_model->add($appointment);
} else {
// Update appointment to Google Calendar.
$appointment['id_google_calendar'] = $this->appointments_model
->get_value('id_google_calendar', $appointment['id']);
$this->google_sync->update_appointment($appointment, $provider,
$service, $customer, $company_settings);
}
}
} catch(Exception $exc) {
$view['exceptions'][] = $exc;
}
// :: SEND NOTIFICATION EMAILS TO BOTH CUSTOMER AND PROVIDER
try {
$this->load->library('Notifications');
$send_provider = $this->providers_model
->get_setting('notifications', $provider['id']);
if (!$post_data['manage_mode']) {
$customer_title = 'Your appointment has been successfully booked!';
$customer_message = 'Thank you for arranging an appointment with us. '
. 'Below you can see the appointment details. Make changes '
. 'by clicking the appointment link.';
$customer_link = $this->config->item('base_url') . 'appointments/index/'
. $appointment['hash'];
$provider_title = 'A new appointment has been added to your plan.';
$provider_message = 'You can make changes by clicking the appointment '
. 'link below';
$provider_link = $this->config->item('base_url') . 'backend/index/'
. $appointment['hash'];
} else {
$customer_title = 'Appointment changes have been successfully saved!';
$customer_message = '';
$customer_link = $this->config->item('base_url') . 'appointments/index/'
. $appointment['hash'];
$provider_title = 'Appointment details have changed.';
$provider_message = '';
$provider_link = $this->config->item('base_url') . 'backend/index/'
. $appointment['hash'];
}
$this->notifications->send_appointment_details($appointment, $provider,
$service, $customer,$company_settings, $customer_title,
$customer_message, $customer_link, $customer['email']);
if ($send_provider == TRUE) {
$this->notifications->send_appointment_details($appointment, $provider,
$service, $customer, $company_settings, $provider_title,
$provider_message, $provider_link, $provider['email']);
}
} catch(Exception $exc) {
$view['exceptions'][] = $exc;
}
// :: LOAD THE BOOK SUCCESS VIEW
$view = array(
'appointment_data' => $appointment,
'provider_data' => $provider,
'service_data' => $service,
'company_name' => $company_settings['company_name']
);
} catch(Exception $exc) {
$view['exceptions'][] = $exc;
}
$this->load->view('appointments/book_success', $view);
}
}
/**
* Cancel an existing appointment.
*
* This method removes an appointment from the company's schedule.
* In order for the appointment to be deleted, the hash string must
* be provided. The customer can only cancel the appointment if the
* edit time period is not over yet.
*
* @param string $appointment_hash This is used to distinguish the
* appointment record.
* @param string $_POST['cancel_reason'] The text that describes why
* the customer cancelled the appointment.
*/
public function cancel($appointment_hash) {
try {
$this->load->model('appointments_model');
$this->load->model('providers_model');
$this->load->model('customers_model');
$this->load->model('services_model');
$this->load->model('settings_model');
// Check whether the appointment hash exists in the database.
$records = $this->appointments_model->get_batch(array('hash' => $appointment_hash));
if (count($records) == 0) {
throw new Exception('No record matches the provided hash.');
}
$appointment = $records[0];
$provider = $this->providers_model->get_row($appointment['id_users_provider']);
$customer = $this->customers_model->get_row($appointment['id_users_customer']);
$service = $this->services_model->get_row($appointment['id_services']);
$company_settings = array(
'company_name' => $this->settings_model->get_setting('company_name'),
'company_email' => $this->settings_model->get_setting('company_email'),
'company_link' => $this->settings_model->get_setting('company_link')
);
// :: DELETE APPOINTMENT RECORD FROM THE DATABASE.
if (!$this->appointments_model->delete($appointment['id'])) {
throw new Exception('Appointment could not be deleted from the database.');
}
// :: SYNC APPOINTMENT REMOVAL WITH GOOGLE CALENDAR
if ($appointment['id_google_calendar'] != NULL) {
try {
$google_sync = $this->providers_model->get_setting('google_sync',
$appointment['id_users_provider']);
if ($google_sync == TRUE) {
$google_token = json_decode($this->providers_model
->get_setting('google_token', $provider['id']));
$this->load->library('Google_Sync');
$this->google_sync->refresh_token($google_token->refresh_token);
$this->google_sync->delete_appointment($appointment['id_google_calendar']);
}
} catch(Exception $exc) {
$exceptions[] = $exc;
}
}
// :: SEND NOTIFICATION EMAILS TO CUSTOMER AND PROVIDER
try {
$this->load->library('Notifications');
$send_provider = $this->providers_model
->get_setting('notifications', $provider['id']);
if ($send_provider == TRUE) {
$this->notifications->send_delete_appointment($appointment, $provider,
$service, $customer, $company_settings, $provider['email'],
$_POST['cancel_reason']);
}
$this->notifications->send_delete_appointment($appointment, $provider,
$service, $customer, $company_settings, $customer['email'],
$_POST['cancel_reason']);
} catch(Exception $exc) {
$exceptions[] = $exc;
}
} catch(Exception $exc) {
// Display the error message to the customer.
$exceptions[] = $exc;
}
$view = array();
if (isset($exceptions)) {
$view['exceptions'] = $exceptions;
}
$this->load->view('appointments/cancel', $view);
}
/**
* [AJAX] Get the available appointment hours for the given date.
*
* This method answers to an AJAX request. It calculates the available hours
* for thegiven service, provider and date.
*
* @param numeric $_POST['service_id'] The selected service's record id.
* @param numeric $_POST['provider_id'] The selected provider's record id.
* @param string $_POST['selected_date'] The selected date of which the
* available hours we want to see.
* @param numeric $_POST['service_duration'] The selected service duration in
* minutes.
* @return Returns a json object with the available hours.
*/
public function ajax_get_available_hours() {
$this->load->model('providers_model');
$this->load->model('appointments_model');
$this->load->model('settings_model');
try {
// If manage mode is TRUE then the following we should not consider the selected
// appointment when calculating the available time periods of the provider.
$exclude_appointments = ($_POST['manage_mode'] === 'true')
? array($_POST['appointment_id'])
: array();
$empty_periods = $this->get_provider_available_time_periods($_POST['provider_id'],
$_POST['selected_date'], $exclude_appointments);
// Calculate the available appointment hours for the given date.
// The empty spaces are broken down to 15 min and if the service
// fit in each quarter then a new available hour is added to the
// $available hours array.
$available_hours = array();
foreach($empty_periods as $period) {
$start_hour = new DateTime($_POST['selected_date'] . ' ' . $period['start']);
$end_hour = new DateTime($_POST['selected_date'] . ' ' . $period['end']);
$minutes = $start_hour->format('i');
if ($minutes % 15 != 0) {
// Change the start hour of the current space in order to be
// on of the following: 00, 15, 30, 45.
if ($minutes < 15) {
$start_hour->setTime($start_hour->format('H'), 15);
} else if ($minutes < 30) {
$start_hour->setTime($start_hour->format('H'), 30);
} else if ($minutes < 45) {
$start_hour->setTime($start_hour->format('H'), 45);
} else {
$start_hour->setTime($start_hour->format('H') + 1, 00);
}
}
$curr_hour = $start_hour;
$diff = $curr_hour->diff($end_hour);
while(($diff->h * 60 + $diff->i) > intval($_POST['service_duration'])) {
$available_hours[] = $curr_hour->format('H:i');
$curr_hour->add(new DateInterval("PT15M"));
$diff = $curr_hour->diff($end_hour);
}
}
// If the selected date is today, remove past hours. It is important
// include the timeout before booking that is set in the backoffice
// the system. Normally we might want the customer to book an appointment
// that is at least half or one hour from now. The setting is stored in
// minutes.
if (date('m/d/Y', strtotime($_POST['selected_date'])) == date('m/d/Y')) {
if ($_POST['manage_mode'] === 'true') {
$book_advance_timeout = 0;
} else {
$book_advance_timeout = $this->settings_model->get_setting(
'book_advance_timeout');
}
foreach($available_hours as $index=>$value) {
$available_hour = strtotime($value);
$current_hour = strtotime('+' . $book_advance_timeout . ' minutes',
strtotime('now'));
if ($available_hour <= $current_hour) {
unset($available_hours[$index]);
}
}
}
$available_hours = array_values($available_hours);
echo json_encode($available_hours);
} catch(Exception $exc) {
echo json_encode(array(
'exceptions' => array( exceptionToJavaScript($exc) )
));
}
}
/**
* Check whether the provider is still available in the selected appointment date.
*
* It might be times where two or more customers select the same appointment date and time.
* This shouldn't be allowed to happen, so one of the two customers will eventually get the
* prefered date and the other one will have to choose for another date. Use this method
* just before the customer confirms the appointment details. If the selected date was taken
* in the mean time, the customer must be prompted to select another time for his appointment.
*
* @param int $_POST['id_users_provider'] The selected provider's record id.
* @param int $_POST['id_services'] The selected service's record id.
* @param string $_POST['start_datetime'] This is a mysql formed string.
* @return bool Returns whether the selected datetime is still available.
*/
public function ajax_check_datetime_availability() {
try {
$this->load->model('services_model');
$service_duration = $this->services_model->get_value('duration', $_POST['id_services']);
$available_periods = $this->get_provider_available_time_periods(
$_POST['id_users_provider'], $_POST['start_datetime']);
$is_still_available = FALSE;
foreach($available_periods as $period) {
$appt_start = new DateTime($_POST['start_datetime']);
$appt_start = $appt_start->format('H:i');
$appt_end = new DateTime($_POST['start_datetime']);
$appt_end->add(new DateInterval('PT' . $service_duration . 'M'));
$appt_end = $appt_end->format('H:i');
$period_start = date('H:i', strtotime($period['start']));
$period_end = date('H:i', strtotime($period['end']));
if ($period_start <= $appt_start && $period_end >= $appt_end) {
$is_still_available = TRUE;
break;
}
}
echo json_encode($is_still_available);
} catch(Exception $exc) {
echo json_encode(array(
'exceptions' => array(exceptionToJavaScript($exc))
));
}
}
/**
* Get an array containing the free time periods (start - end) of a selected date.
*
* This method is very important because there are many cases where the system needs to
* know when a provider is avaible for an appointment. This method will return an array
* that belongs to the selected date and contains values that have the start and the end
* time of an available time period.
*
* @param numeric $provider_id The provider's record id.
* @param string $selected_date The date to be checked (MySQL formatted string).
* @param array $exclude_appointments This array contains the ids of the appointments that
* will not be taken into consideration when the available time periods are calculated.
* @return array Returns an array with the available time periods of the provider.
*/
private function get_provider_available_time_periods($provider_id, $selected_date,
$exclude_appointments = array()) {
$this->load->model('appointments_model');
$this->load->model('providers_model');
// Get the provider's working plan and reserved appointments.
$working_plan = json_decode($this->providers_model->get_setting('working_plan',
$provider_id), true);
$where_clause = array(
'DATE(start_datetime)' => date('Y-m-d', strtotime($selected_date)),
'id_users_provider' => $provider_id
);
$reserved_appointments = $this->appointments_model->get_batch($where_clause);
// Sometimes it might be necessary to not take into account some appointment records
// in order to display what the providers available time periods would be without them.
foreach($exclude_appointments as $excluded_appointment) {
foreach($reserved_appointments as $index=>$appointment) {
if ($appointment['id'] == $excluded_appointment['id']) {
unset($reserved_appointments[$index]);
}
}
}
// Find the empty spaces on the plan. The first split between the plan is due to
// a break (if exist). After that every reserved appointment is considered to be
// a taken space in the plan.
$selected_date_working_plan = $working_plan[strtolower(date('l', strtotime($selected_date)))];
$available_periods_with_breaks = array();
if (isset($selected_date_working_plan['breaks'])) {
foreach($selected_date_working_plan['breaks'] as $index=>$break) {
// Split the working plan to available time periods that do not
// contain the breaks in them.
$last_break_index = $index - 1;
if (count($available_periods_with_breaks) === 0) {
$start_hour = $selected_date_working_plan['start'];
$end_hour = $break['start'];
} else {
$start_hour = $selected_date_working_plan['breaks'][$last_break_index]['end'];
$end_hour = $break['start'];
}
$available_periods_with_breaks[] = array(
'start' => $start_hour,
'end' => $end_hour
);
}
// Add the period from the last break to the end of the day.
$available_periods_with_breaks[] = array(
'start' => $selected_date_working_plan['breaks'][$index]['end'],
'end' => $selected_date_working_plan['end']
);
}
// Break the empty periods with the reserved appointments.
$available_periods_with_appointments = array();
if (count($reserved_appointments) > 0) {
foreach($available_periods_with_breaks as $period) {
foreach($reserved_appointments as $index=>$appointment) {
$appointment_start = date('H:i', strtotime($appointment['start_datetime']));
$appointment_end = date('H:i', strtotime($appointment['end_datetime']));
$period_start = date('H:i', strtotime($period['start']));
$period_end = date('H:i', strtotime($period['end']));
if ($period_start <= $appointment_start && $period_end >= $appointment_end) {
// We need to check whether another appointment fits in the current
// time period. If this happens, then we need to consider the whole
// appointment time as one, because the provider will not be available.
foreach ($reserved_appointments as $tmp_appointment) {
$appt_start = date('H:i', strtotime($tmp_appointment['start_datetime']));
$appt_end = date('H:i', strtotime($tmp_appointment['end_datetime']));
if ($period_start < $appt_start && $period_end > $appt_end) {
if ($appointment_start > $appt_start) {
$appointment_start = $appt_start;
}
if ($appointment_end < $appt_end) {
$appointment_end = $appt_end;
}
}
}
// Current appointment is within the current empty space. So
// we need to break the empty space into two other spaces that
// don't include the appointment.
$new_period = array(
'start' => $period_start,
'end' => $appointment_start
);
if (!in_array($new_period, $available_periods_with_appointments)) {
$available_periods_with_appointments[] = $new_period;
}
$new_period = array(
'start' => $appointment_end,
'end' => $period_end
);
if (!in_array($new_period, $available_periods_with_appointments)) {
$available_periods_with_appointments[] = $new_period;
}
} else {
// Check if there are any other appointments between this
// time space. If not, it is going to be added as it is.
$found = FALSE;
foreach ($reserved_appointments as $tmp_appointment) {
$appt_start = date('H:i', strtotime($tmp_appointment['start_datetime']));
$appt_end = date('H:i', strtotime($tmp_appointment['end_datetime']));
if ($period_start < $appt_start && $period_end > $appt_end) {
$found = TRUE;
}
}
// It is also necessary to check that this time period doesn't
// already exist in the "$empty_spaces_with_appointments" array.
$empty_period = array(
'start' => $period_start,
'end' => $period_end
);
$already_exist = in_array($empty_period, $available_periods_with_appointments);
if ($found === FALSE && $already_exist === FALSE) {
$available_periods_with_appointments[] = $empty_period;
}
}
}
}
} else {
$available_periods_with_appointments = $available_periods_with_breaks;
}
return $available_periods_with_appointments;
}
}
/* End of file appointments.php */
/* Location: ./application/controllers/appointments.php */