MaketRandevu/src/application/models/Appointments_model.php

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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/* ----------------------------------------------------------------------------
* Easy!Appointments - Open Source Web Scheduler
*
* @package EasyAppointments
* @author A.Tselegidis <alextselegidis@gmail.com>
2017-01-31 09:35:34 +03:00
* @copyright Copyright (c) 2013 - 2017, Alex Tselegidis
* @license http://opensource.org/licenses/GPL-3.0 - GPLv3
* @link http://easyappointments.org
* @since v1.0.0
* ---------------------------------------------------------------------------- */
/**
* Appointments Model
*
* @package Models
*/
class Appointments_Model extends CI_Model {
/**
* Add an appointment record to the database.
*
* This method adds a new appointment to the database. If the
* appointment doesn't exists it is going to be inserted, otherwise
* the record is going to be updated.
*
* @param array $appointment Associative array with the appointment
* data. Each key has the same name with the database fields.
* @return int Returns the appointments id.
*/
public function add($appointment) {
// Validate the appointment data before doing anything.
$this->validate($appointment);
// Perform insert() or update() operation.
if (!isset($appointment['id'])) {
$appointment['id'] = $this->_insert($appointment);
} else {
$this->_update($appointment);
}
return $appointment['id'];
}
/**
* Check if a particular appointment record already exists.
*
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* This method checks whether the given appointment already exists
* in the database. It doesn't search with the id, but by using the
* following fields: "start_datetime", "end_datetime", "id_users_provider",
* "id_users_customer", "id_services".
*
* @param array $appointment Associative array with the appointment's
* data. Each key has the same name with the database fields.
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* @return bool Returns whether the record exists or not.
*/
public function exists($appointment) {
if (!isset($appointment['start_datetime'])
|| !isset($appointment['end_datetime'])
|| !isset($appointment['id_users_provider'])
|| !isset($appointment['id_users_customer'])
|| !isset($appointment['id_services'])) {
throw new Exception('Not all appointment field values '
. 'are provided: ' . print_r($appointment, TRUE));
}
$num_rows = $this->db->get_where('ea_appointments', array(
'start_datetime' => $appointment['start_datetime'],
'end_datetime' => $appointment['end_datetime'],
'id_users_provider' => $appointment['id_users_provider'],
'id_users_customer' => $appointment['id_users_customer'],
'id_services' => $appointment['id_services'],))
->num_rows();
return ($num_rows > 0) ? TRUE : FALSE;
}
/**
* Insert a new appointment record to the database.
*
* @param array $appointment Associative array with the appointment's
* data. Each key has the same name with the database fields.
* @return int Returns the id of the new record.
*/
protected function _insert($appointment) {
$appointment['book_datetime'] = date('Y-m-d H:i:s');
$appointment['hash'] = $this->generate_hash();
if (!$this->db->insert('ea_appointments', $appointment)) {
throw new Exception('Could not insert appointment record.');
}
return intval($this->db->insert_id());
}
/**
* Update an existing appointment record in the database.
*
* The appointment data argument should already include the record
* id in order to process the update operation.
*
* @expectedException DatabaseException Raises when the update operation
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* fails to complete successfully.
*
* @param array $appointment Associative array with the appointment's
* data. Each key has the same name with the database fields.
*/
protected function _update($appointment) {
$this->db->where('id', $appointment['id']);
if (!$this->db->update('ea_appointments', $appointment)) {
throw new Exception('Could not update appointment record.');
}
}
/**
* Find the database id of an appointment record.
*
* The appointment data should include the following fields in order
* to get the unique id from the database: "start_datetime", "end_datetime",
* "id_users_provider", "id_users_customer", "id_services".
*
* <strong>IMPORTANT!</strong> The record must already exists in the
* database, otherwise an exception is raised.
*
* @param array $appointment Array with the appointment data. The
* keys of the array should have the same names as the db fields.
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* @return int Returns the db id of the record that matches the appointment
* data.
*/
public function find_record_id($appointment) {
$this->db->where(array(
'start_datetime' => $appointment['start_datetime'],
'end_datetime' => $appointment['end_datetime'],
'id_users_provider' => $appointment['id_users_provider'],
'id_users_customer' => $appointment['id_users_customer'],
'id_services' => $appointment['id_services']
));
$result = $this->db->get('ea_appointments');
if ($result->num_rows() == 0) {
throw new Exception('Could not find appointment record id.');
}
return $result->row()->id;
}
/**
* Validate appointment data before the insert or update operations
* are executed.
*
* @param array $appointment Contains the appointment data.
* @return bool Returns the validation result.
*/
public function validate($appointment) {
$this->load->helper('data_validation');
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// If a appointment id is given, check whether the record exists
// in the database.
if (isset($appointment['id'])) {
$num_rows = $this->db->get_where('ea_appointments',
array('id' => $appointment['id']))->num_rows();
if ($num_rows == 0) {
throw new Exception('Provided appointment id does not '
. 'exist in the database.');
}
}
// Check if appointment dates are valid.
if (!validate_mysql_datetime($appointment['start_datetime'])) {
throw new Exception('Appointment start datetime is invalid.');
}
if (!validate_mysql_datetime($appointment['end_datetime'])) {
throw new Exception('Appointment end datetime is invalid.');
}
// Check if the provider's id is valid.
$num_rows = $this->db
->select('*')
->from('ea_users')
->join('ea_roles', 'ea_roles.id = ea_users.id_roles', 'inner')
->where('ea_users.id', $appointment['id_users_provider'])
->where('ea_roles.slug', DB_SLUG_PROVIDER)
->get()->num_rows();
if ($num_rows == 0) {
throw new Exception('Appointment provider id is invalid.');
}
if ($appointment['is_unavailable'] == FALSE) {
// Check if the customer's id is valid.
$num_rows = $this->db
->select('*')
->from('ea_users')
->join('ea_roles', 'ea_roles.id = ea_users.id_roles', 'inner')
->where('ea_users.id', $appointment['id_users_customer'])
->where('ea_roles.slug', DB_SLUG_CUSTOMER)
->get()->num_rows();
if ($num_rows == 0) {
throw new Exception('Appointment customer id is invalid.');
}
// Check if the service id is valid.
$num_rows = $this->db->get_where('ea_services',
array('id' => $appointment['id_services']))->num_rows();
if ($num_rows == 0) {
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throw new Exception('Appointment service id is invalid.');
}
}
return TRUE;
}
/**
* Delete an existing appointment record from the database.
*
* @expectedException InvalidArgumentException Raises when the $appointment_id
* is not an integer.
*
* @param numeric $appointment_id The record id to be deleted.
* @return bool Returns the delete operation result.
*/
public function delete($appointment_id) {
if (!is_numeric($appointment_id)) {
throw new Exception('Invalid argument type $appointment_id (value:"' . $appointment_id . '")');
}
$num_rows = $this->db->get_where('ea_appointments', array('id' => $appointment_id))->num_rows();
if ($num_rows == 0) {
return FALSE; // Record does not exist.
}
$this->db->where('id', $appointment_id);
return $this->db->delete('ea_appointments');
}
/**
* Get a specific row from the appointments table.
*
* @param numeric $appointment_id The record's id to be returned.
* @return array Returns an associative array with the selected
* record's data. Each key has the same name as the database
* field names.
*/
public function get_row($appointment_id) {
if (!is_numeric($appointment_id)) {
throw new Exception('Invalid argument given. Expected '
. 'integer for the $appointment_id: ' . $appointment_id);
}
return $this->db->get_where('ea_appointments',
array('id' => $appointment_id))->row_array();
}
/**
* Get a specific field value from the database.
*
* @param string $field_name The field name of the value to be returned.
* @param numeric $appointment_id The selected record's id.
* @return string Returns the records value from the database.
*/
public function get_value($field_name, $appointment_id) {
if (!is_numeric($appointment_id)) {
throw new Exception('Invalid argument given, expected '
. 'integer for the $appointment_id: ' . $appointment_id);
}
if (!is_string($field_name)) {
throw new Exception('Invalid argument given, expected '
. 'string for the $field_name: ' . $field_name);
}
if ($this->db->get_where('ea_appointments',
array('id' => $appointment_id))->num_rows() == 0) {
throw new Exception('The record with the provided id '
. 'does not exist in the database: ' . $appointment_id);
}
$row_data = $this->db->get_where('ea_appointments',
array('id' => $appointment_id))->row_array();
if (!isset($row_data[$field_name])) {
throw new Exception('The given field name does not '
. 'exist in the database: ' . $field_name);
}
return $row_data[$field_name];
}
/**
* Get all, or specific records from appointment's table.
*
* @example $this->Model->getBatch('id = ' . $recordId);
*
* @param string $where_clause (OPTIONAL) The WHERE clause of
* the query to be executed. DO NOT INCLUDE 'WHERE' KEYWORD.
* @return array Returns the rows from the database.
*/
public function get_batch($where_clause = '') {
if ($where_clause != '') {
$this->db->where($where_clause);
}
return $this->db->get('ea_appointments')->result_array();
}
/**
* Generate a unique hash for the given appointment data.
*
* This method uses the current date-time to generate a unique
* hash string that is later used to identify this appointment.
* Hash is needed when the email is send to the user with an
* edit link.
*
* @return string Returns the unique appointment hash.
*/
public function generate_hash() {
$current_date = new DateTime();
return md5($current_date->getTimestamp());
}
/**
* Inserts or updates an unavailable period record in the database.
*
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* @param array $unavailable Contains the unavailable data.
* @return int Returns the record id.
*/
public function add_unavailable($unavailable) {
// Validate period
$start = strtotime($unavailable['start_datetime']);
$end = strtotime($unavailable['end_datetime']);
if ($start > $end) {
throw new Exception('Unavailable period start must be prior to end.');
}
// Validate provider record
$where_clause = array(
'id' => $unavailable['id_users_provider'],
'id_roles' => $this->db->get_where('ea_roles', array('slug' => DB_SLUG_PROVIDER))->row()->id
);
if ($this->db->get_where('ea_users', $where_clause)->num_rows() == 0) {
throw new Exception('Provider id was not found in database.');
}
// Add record to database (insert or update).
if (!isset($unavailable['id'])) {
$unavailable['book_datetime'] = date('Y-m-d H:i:s');
$unavailable['is_unavailable'] = true;
$this->db->insert('ea_appointments', $unavailable);
$unavailable['id'] = $this->db->insert_id();
} else {
$this->db->where(array('id' => $unavailable['id']));
$this->db->update('ea_appointments', $unavailable);
}
return $unavailable['id'];
}
/**
* Delete an unavailable period.
*
* @param numeric $unavailable_id Record id to be deleted.
*/
public function delete_unavailable($unavailable_id) {
if (!is_numeric($unavailable_id)) {
throw new Exception('Invalid argument type $unavailable_id (value:"' .
$unavailable_id . '")');
}
$num_rows = $this->db->get_where('ea_appointments', array('id' => $unavailable_id))
->num_rows();
if ($num_rows == 0) {
return FALSE; // Record does not exist.
}
$this->db->where('id', $unavailable_id);
return $this->db->delete('ea_appointments');
}
/**
* Clear google sync IDs from appointment record.
*
* @param numeric $provider_id The appointment provider record id.
*/
public function clear_google_sync_ids($provider_id) {
if (!is_numeric($provider_id)) {
throw new Exception('Invalid argument type $provider_id (value: "'
. $provider_id . '")');
}
$this->db->update('ea_appointments', array('id_google_calendar' => NULL),
array('id_users_provider' => $provider_id));
}
/**
* Get appointment count for the provided start datetime.
*
* @param int $service_id Selected service ID.
* @param string $selected_date Selected date string.
* @param string $hour Selected hour string.
*
* @return int Returns the appointment number at the selected start time.
*/
public function appointment_count_for_hour($service_id, $selected_date, $hour) {
return $this->db->get_where('ea_appointments', [
'id_services' => $service_id,
'start_datetime' => date('Y-m-d H:i:s', strtotime($selected_date . ' ' . $hour . ':00'))
])->num_rows();
}
}