<?php
/**
 * Simply Schedule Appointments Appointments Model.
 *
 * @since   0.0.3
 * @package Simply_Schedule_Appointments
 */
use League\Period\Period;

/**
 * Simply Schedule Appointments Appointments Model.
 *
 * @since 0.0.3
 */
class SSA_Appointment_Model extends SSA_Db_Model {
	protected $slug = 'appointment';
	protected $version = '2.7.3';

	/**
	 * Parent plugin class.
	 *
	 * @since 0.0.2
	 *
	 * @var   Simply_Schedule_Appointments
	 */
	protected $plugin = null;

	/**
	 * Constructor.
	 *
	 * @since  0.0.2
	 *
	 * @param  Simply_Schedule_Appointments $plugin Main plugin object.
	 */
	public function __construct( $plugin ) {
		// $this->version = $this->version.'.'.time(); // dev mode
		parent::__construct( $plugin );

		$this->hooks();
	}

	/**
	 * Initiate our hooks.
	 *
	 * @since  0.0.2
	 */
	public function hooks() {
		add_filter( 'ssa/appointment/before_insert', array( $this, 'cleanup_customer_information' ), 5, 1 );
		add_filter( 'ssa/appointment/before_update', array( $this, 'cleanup_customer_information' ), 5, 1 );
		add_filter( 'ssa/appointment/before_update', array( $this, 'prevent_canceling_a_reserved_appointment' ), 1, 2 );

		add_filter( 'ssa/appointment/before_insert', array( $this, 'default_appointment_status' ), 5, 1 );

		add_filter( 'ssa/appointment/before_update', array( $this, 'merge_customer_information' ), 10, 3 );

		add_action( 'ssa/appointment/after_insert', array( $this, 'update_rescheduled_to_appointment_id' ), 10, 3 );
		
		add_filter( 'ssa/appointment/after_get', array( $this, 'format_multiline_customer_information' ), 10, 1 );
	}
	
	public function format_multiline_customer_information( $item ) {
		if( ! isset( $item['customer_information'] ) || ! is_array( $item['customer_information'] ) ){
			return $item;
		}
		
		$appointment_type_object = new SSA_Appointment_Type_Object( $item["appointment_type_id"] );
		$fields = [];
		// added to avoid executing the code block on a string in basic edition
		if( is_array( $appointment_type_object->custom_customer_information ) ){
			foreach( $appointment_type_object->custom_customer_information as $field ){
				$field_label = $field["field"];
				$fields[] = $field_label;
				if( "multi-text" === $field["type"] && isset( $item['customer_information'][$field_label] ) && is_string( $item['customer_information'][$field_label] ) ){
					 $item['customer_information'][$field_label] = nl2br( $item['customer_information'][$field_label] );
				}
			}
		}
		
		foreach( $item['customer_information'] as $key => $value ){
			if( ! in_array( $key, $fields ) && is_string( $item['customer_information'][$key] ) ){
				$item['customer_information'][$key] = nl2br( $item['customer_information'][$key] );
			}
		}
		
		return $item;
	}

	public static function get_booked_statuses() {
		return array( 'booked' );
	}
	public static function is_a_booked_status( $status ) {
		return in_array( $status, self::get_booked_statuses() );
	}

	public static function get_reserved_statuses() {
		return array( 'pending_payment', 'pending_form' );
	}
	public static function is_a_reserved_status( $status ) {
		return in_array( $status, self::get_reserved_statuses() );
	}

	public static function get_canceled_statuses() {
		return array( 'canceled' );
	}

	public static function is_a_canceled_status( $status ) {
		return in_array( $status, self::get_canceled_statuses() );
	}

	public static function get_abandoned_statuses() {
		return array( 'abandoned' );
	}

	public static function is_an_abandoned_status( $status ) {
		return in_array( $status, self::get_abandoned_statuses() );
	}

	public static function get_unavailable_statuses() {
		return array_merge(
			self::get_booked_statuses(),
			self::get_reserved_statuses()
		);
	}
	public static function is_a_unavailable_status( $status ) {
		return in_array( $status, self::get_unavailable_statuses() );
	}
	public static function is_a_available_status( $status ) {
		return ! self::is_a_unavailable_status( $status );
	}

	/**
	 * Check if an appointment got reassigned to another team member on update
	 *
	 * @param array $data_after
	 * @param array $data_before
	 * @return boolean
	 */
	public static function is_appointment_reassigned( $data_after, $data_before ) {

		if ( ! class_exists( 'SSA_Staff' ) ) {
			return false;
		}

		// Use isset since the staff_ids still could be empty when reassigned
		if ( ! isset( $data_before["staff_ids"] ) || ! isset( $data_after["staff_ids"] ) ) {
			return false;
		}

		if ( empty( $data_before["staff_ids"] ) && empty( $data_after["staff_ids"] ) ) {
			return false;
		}

		$intersection = array_intersect( $data_before["staff_ids"], $data_after["staff_ids"] );

		if ( count( $intersection ) === count( $data_before["staff_ids"] ) && count( $intersection ) === count( $data_after["staff_ids"] ) ) {
				return false;
		}

		return true;
	}

	public function merge_customer_information( $data, $data_before, $appointment_id ) {
		if ( empty( $data['customer_information'] ) ) {
			return $data;
		}

		if ( empty( $data_before['customer_information'] ) ) {
			$data_before['customer_information'] = array();
		}

		// using array_replace instead of array_merge to overwrite values and prevent duplicate keys
		$data['customer_information'] = array_replace( $data_before['customer_information'], $data['customer_information'] );

		return $data;
	}

	/**
	 * A reserved appointment ( pending_payment or pending_form ) should only be marked as abandoned
	 * Check if status before is either pending_payment or pending_form
	 * Check if status after is canceled
	 * If so, change canceled to abandoned
	 *
	 * @param array $data_after
	 * @param array $data_before
	 * @return array
	 */
	public function prevent_canceling_a_reserved_appointment( $data_after = array(), $data_before = array() ) {
		if ( empty( $data_before['status'] ) || empty( $data_after['status'] ) ) {
			return $data_after;
		}

		if ( ! SSA_Appointment_Model::is_a_reserved_status( $data_before['status'] ) ) {
			return $data_after;
		}

		if ( SSA_Appointment_Model::is_a_canceled_status( $data_after['status'] ) ) {
			$data_after['status'] = 'abandoned';
		}

		return $data_after;

	}

	public function cleanup_customer_information( $data ) {
		if ( empty( $data['customer_information'] ) || ! is_array( $data['customer_information'] ) ) {
			return $data;
		}

		foreach ( $data['customer_information'] as &$info ) {
			if ( is_string( $info ) ) {
				$info = trim( $info );
				// sanitize
				$info = sanitize_textarea_field($info);
			}
		}

		return $data;
	}

	public function default_appointment_status( $data ) {
		// We want to allow "pending_form" status if it's provided
		if ( ! empty( $data['status'] ) && $data['status'] === 'pending_form' ) {
			return $data;
		}

		$data['status'] = 'booked';
		return $data;
	}

	public function debug() {
	}

	public function belongs_to() {
		return array(
			// 'Author' => array(
			// 'model' => 'WP_User_Model',
			// 'foreign_key' => 'author_id',
			// ),
			'AppointmentType' => array(
				'model'       => $this->plugin->appointment_type_model,
				'foreign_key' => 'appointment_type_id',
			),
		);
	}

	public function has_many() {
		return array(
			'Payment' => array(
				'model'       => $this->plugin->payment_model,
				'foreign_key' => 'appointment_id',
			),
			'Revision' => array(
				'model' => $this->plugin->revision_model,
				'foreign_key' => 'appointment_id',
			),
		);
	}

	protected $schema = array(
		'appointment_type_id'             => array(
			'field'            => 'appointment_type_id',
			'label'            => 'Appointment Type ID',
			'default_value'    => 0,
			'format'           => '%d',
			'mysql_type'       => 'BIGINT',
			'mysql_length'     => 20,
			'mysql_unsigned'   => true,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'rescheduled_from_appointment_id' => array(
			'field'            => 'rescheduled_from_appointment_id',
			'label'            => 'Rescheduled from Appointment ID',
			'default_value'    => 0,
			'format'           => '%d',
			'mysql_type'       => 'BIGINT',
			'mysql_length'     => 20,
			'mysql_unsigned'   => true,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'rescheduled_to_appointment_id'   => array(
			'field'            => 'rescheduled_to_appointment_id',
			'label'            => 'Rescheduled to Appointment ID',
			'default_value'    => 0,
			'format'           => '%d',
			'mysql_type'       => 'BIGINT',
			'mysql_length'     => 20,
			'mysql_unsigned'   => true,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'group_id'                        => array(
			'field'            => 'group_id',
			'label'            => 'Group ID',
			'default_value'    => 0,
			'format'           => '%d',
			'mysql_type'       => 'BIGINT',
			'mysql_length'     => 20,
			'mysql_unsigned'   => true,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'author_id'                       => array(
			'field'            => 'author_id',
			'label'            => 'Author ID',
			'default_value'    => 0,
			'format'           => '%d',
			'mysql_type'       => 'BIGINT',
			'mysql_length'     => 20,
			'mysql_unsigned'   => true,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'customer_id'                     => array(
			'field'            => 'customer_id',
			'label'            => 'Customer ID',
			'default_value'    => 0,
			'format'           => '%d',
			'mysql_type'       => 'BIGINT',
			'mysql_length'     => 20,
			'mysql_unsigned'   => true,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'customer_information'            => array(
			'field'            => 'customer_information',
			'label'            => 'Customer Information',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
			'encoder'          => 'json',
		),
		'customer_timezone'               => array(
			'field'            => 'customer_timezone',
			'label'            => 'Customer Timezone',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TINYTEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'customer_locale'                 => array(
			'field'            => 'customer_locale',
			'label'            => 'Customer Locale',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TINYTEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'start_date'                      => array(
			'field'            => 'start_date',
			'label'            => 'Start Date',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'datetime',
			'mysql_length'     => '',
			'mysql_unsigned'   => false,
			'mysql_allow_null' => true,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'end_date'                        => array(
			'field'            => 'end_date',
			'label'            => 'End Date',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'datetime',
			'mysql_length'     => '',
			'mysql_unsigned'   => false,
			'mysql_allow_null' => true,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'title'                           => array(
			'field'            => 'title',
			'label'            => 'Title',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TINYTEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'description'                     => array(
			'field'            => 'description',
			'label'            => 'Description',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TEXT',
			'mysql_length'     => '',
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'payment_method'                  => array(
			'field'            => 'payment_method',
			'label'            => 'Payment Method',
			'default_value'    => '',
			'format'           => '%s',
			'mysql_type'       => 'TINYTEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'payment_received'                => array(
			'field'            => 'payment_received',
			'label'            => 'Payment Received',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'DECIMAL(9,2)',
			'mysql_length'     => '',
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'mailchimp_list_id'               => array(
			'field'            => 'mailchimp_list_id',
			'label'            => 'MailChimp List ID',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TINYTEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'google_calendar_id'              => array(
			'field'            => 'google_calendar_id',
			'label'            => 'Google Calendar ID',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TINYTEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'google_calendar_event_id'        => array(
			'field'            => 'google_calendar_event_id',
			'label'            => 'Google Calendar Event ID',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TINYTEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'web_meeting_password'            => array(
			'field'            => 'web_meeting_password',
			'label'            => 'Web Meeting Password',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TINYTEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'web_meeting_id'                  => array(
			'field'            => 'web_meeting_id',
			'label'            => 'Web Meeting ID',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TINYTEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'web_meeting_url'                 => array(
			'field'            => 'web_meeting_url',
			'label'            => 'Web Meeting Url',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'TINYTEXT',
			'mysql_length'     => false,
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),

		'allow_sms'          => array(
			'field'            => 'allow_sms',
			'label'            => 'Allow SMS',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'VARCHAR',
			'mysql_length'     => '1',
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'status'                          => array(
			'field'            => 'status',
			'label'            => 'Status',
			'default_value'    => 'booked',
			'format'           => '%s',
			'mysql_type'       => 'VARCHAR',
			'mysql_length'     => '16',
			'mysql_unsigned'   => false,
			'mysql_allow_null' => false,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'date_created'                    => array(
			'field'            => 'date_created',
			'label'            => 'Date Created',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'datetime',
			'mysql_length'     => '',
			'mysql_unsigned'   => false,
			'mysql_allow_null' => true,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'date_modified'                   => array(
			'field'            => 'date_modified',
			'label'            => 'Date Modified',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'datetime',
			'mysql_length'     => '',
			'mysql_unsigned'   => false,
			'mysql_allow_null' => true,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
		'expiration_date'                 => array(
			'field'            => 'expiration_date',
			'label'            => 'Expiration Date',
			'default_value'    => false,
			'format'           => '%s',
			'mysql_type'       => 'datetime',
			'mysql_length'     => '',
			'mysql_unsigned'   => false,
			'mysql_allow_null' => true,
			'mysql_extra'      => '',
			'cache_key'        => false,
		),
	);

	public $indexes = array(
		'customer_id'  => array( 'customer_id' ),
		'start_date'   => array( 'start_date' ),
		'end_date'     => array( 'end_date' ),
		'status'       => array( 'status' ),
		'date_created' => array( 'date_created' ),
	);

	public function filter_where_conditions( $where, $args ) {
		global $wpdb;

		// Check if both customer_id and customer_information are provided
		if ( ! empty( $args['customer_id'] ) && ! empty( $args['customer_information'] ) ) {
			$customer_id_condition = $wpdb->prepare( 'customer_id=%d', sanitize_text_field( $args['customer_id'] ) );
			$email = sanitize_text_field( $args['customer_information'] );
			$email_condition = $wpdb->prepare( 'customer_information LIKE %s', '%' . $wpdb->esc_like( '"Email":"' . $email . '"' ) . '%' );
			
			$where .= ' AND (' . $customer_id_condition . ' OR ' . $email_condition . ')';
		} else {
			// Add individual conditions if only one is provided
			if ( ! empty( $args['customer_id'] ) ) {
				$where .= $wpdb->prepare( ' AND customer_id=%d', sanitize_text_field( $args['customer_id'] ) );
			}

			if ( ! empty( $args['customer_information'] ) ) {
				$email = sanitize_text_field( $args['customer_information'] );
				$where .= $wpdb->prepare( ' AND customer_information LIKE %s', '%' . $wpdb->esc_like( '"Email":"' . $email . '"' ) . '%' );
			}
		}

		if ( ! empty( $args['group_id'] ) ) {
			$where .= $wpdb->prepare( ' AND group_id=%d', sanitize_text_field( $args['group_id'] ) );
		}

		// If querying by label_id -> convert label_id to appointmnet_type_id(s)
		if ( ! empty( $args['label_id'] ) ) {
			$appointment_types = $this->plugin->appointment_type_model->query( array(
				'label_id' => $args['label_id']
			));
			if( ! empty( $appointment_types ) ) {
				$appointment_type_ids = array_map( function($type) {
					return $type['id'];
		
				}, $appointment_types);

				if( ! empty( $args['appointment_type_id'] ) ) {
					
					if( ! is_array( $args['appointment_type_id'] ) ) { 
						$args['appointment_type_id'] = array( $args['appointment_type_id'] ); 
					
					}
					$args['appointment_type_id'] = array_unique( array_merge( $appointment_type_ids, $args['appointment_type_id'] ) );

				} else {
					$args['appointment_type_id'] = $appointment_type_ids;
				}

			}
			// Means we're filtering by label but no matching appointmnent types were found nor passed as arguments
			// Nothing to query, nothing to return
			if( empty( $args['appointment_type_id'] ) ) {
				$where .= ' AND 1=2 ';
				return $where;
			}
		}

		if ( ! empty( $args['appointment_type_id'] ) ) {
			if ( is_array( $args['appointment_type_id'] ) ) {
				$where .= ' AND (';
				foreach ( $args['appointment_type_id'] as $key => $appointment_type_id ) {
					$where .= $wpdb->prepare( "`appointment_type_id` = '" . '%s' . "' ", $appointment_type_id );
					if ( $key + 1 < count( $args['appointment_type_id'] ) ) {
						$where .= 'OR ';
					}
				}
				$where .= ') ';
			} else {
				$where .= $wpdb->prepare( " AND `appointment_type_id` = '" . '%s' . "' ", sanitize_text_field( $args['appointment_type_id'] ) );
			}
		}

		if ( ! empty( $args['exclude_ids'] ) ) {
			if ( is_array( $args['exclude_ids'] ) ) {
				$where .= ' AND (';
				$where .= $wpdb->prepare( '`id` NOT IN (' . implode( ', ', array_fill( 0, count( $args['exclude_ids'] ), '%d' ) ) . ')', $args['exclude_ids'] );
				$where .= ') ';
			} else {
				$where .= $wpdb->prepare( " AND `id` != '" . '%d' . "' ", sanitize_text_field( $args['exclude_ids'] ) );
			}
		}

		if ( isset( $args['intersects_period'] ) ) {
			if ( $args['intersects_period'] instanceof Period ) {
				$start_date_string = $args['intersects_period']->getStartDate()->format( 'Y-m-d H:i:s' );
				$end_date_string   = $args['intersects_period']->getEndDate()->format( 'Y-m-d H:i:s' );

				// it should END in the queried period
				// OR
				// it should START in the queried period
				// OR
				// it should CONTAIN the queried period
				$where .= " AND (
					(end_date >= '{$start_date_string}' AND end_date <= '{$end_date_string}' )
					OR
					(start_date <= '{$end_date_string}' AND start_date >= '{$start_date_string}' )
					OR
					(start_date <= '{$start_date_string}' AND end_date >= '{$end_date_string}' )
				)";
			}
		}
		// specific rows by google_calendar_event_id
		if ( isset( $args['google_calendar_event_id'] ) ) {
			$where .= $wpdb->prepare( " AND `google_calendar_event_id` = '" . '%s' . "' ", $args['google_calendar_event_id'] );
		}

		if ( isset( $args['search'] ) ) {
			$where .= $wpdb->prepare( " AND `customer_information` LIKE '" . '%s' . "' ", "%" . $args['search'] . "%" );
		}

		return $where;
	}

	public function create_item_permissions_check( $request ) {
		return $this->nonce_permissions_check( $request );
	}

	/**
	 * Check if a given request has access to update a specific item
	 *
	 * @param WP_REST_Request $request Full data about the request.
	 * @return WP_Error|bool
	 */
	public function update_item_permissions_check( $request ) {
		if ( true === $this->get_item_permissions_check( $request ) ) {
			return true;
		}

		return false;
	}


	public function group_cancel( $request ) {
		$params = $request->get_params();
		if ( empty( $params['id'] ) ) {
			return;
		}

		$appointment_arrays = $this->query(
			array(
				'number'   => -1,
				'group_id' => $params['id'],
			)
		);

		foreach ( $appointment_arrays as $appointment_array ) {
			if ( 'canceled' === $appointment_array['status'] ) {
				continue;
			}

			$this->update(
				$appointment_array['id'],
				array(
					'status' => 'canceled',
				)
			);
		}

		return true;
	}

	public function group_delete( $request ) {
		$params = $request->get_params();
		if ( empty( $params['id'] ) ) {
			return;
		}

		$appointment_arrays = $this->query(
			array(
				'number'   => -1,
				'group_id' => $params['id'],
			)
		);

		foreach ( $appointment_arrays as $appointment_array ) {
			$this->delete( $appointment_array['id'] );
		}

		return true;
	}

	public function is_prospective_appointment_available( SSA_Appointment_Type_Object $appointment_type, DateTimeImmutable $start_date, $args = array() ) {
			$period = new Period(
				$start_date->sub( $appointment_type->get_buffered_duration_interval() ),
				$start_date->add( $appointment_type->get_buffered_duration_interval() )
			);

			$args = shortcode_atts( array(
				'cache_level_read'  => false, // check the database, bypass cache
				'cache_level_write' => false, // don't cache the narrow-range query
	
				'excluded_appointment_ids' => array(),
			), $args );


			$availability_query = new SSA_Availability_Query(
				$appointment_type,
				$period,
				$args
			);

			$prospective_appointment = SSA_Appointment_Factory::create(
				$appointment_type,
				array(
					'id'         => 0,
					'start_date' => $start_date->format( 'Y-m-d H:i:s' ),
				)
			);
			$is_period_available     = $availability_query->is_prospective_appointment_bookable( $prospective_appointment );

			return $is_period_available;
	}
	
	public function get_item( $request ) {
		$response = parent::get_item( $request );
		$params  = $request->get_params();
		
		if( !empty( $params['fetch'] )){
			$appointment_object     = new SSA_Appointment_Object( $response->data['data']['id'] );
			$response->data['data'] = $appointment_object->get_data( 0, $params['fetch'] );
		}
		
		return $response;
	}
	
	public function create_item( $request ) {
		$params = $request->get_params();
		$params = shortcode_atts(
			array_merge(
				$this->get_field_defaults(),
				array(
					'appointment_type_id'           => '',
					'rescheduled_to_appointment_id' => '',
					'start_date'                    => '',
					'customer_information'          => array(),
					'post_information'              => array(),
					'customer_id'                   => 0,
					'fetch'                         => array(),
					'mepr_membership'               => array(),
					'staff_ids'               			=> array(),
					'selected_resources'            => array(),
					'opt_in_notifications'          => false,
				)
			),
			$params
		);

		if ( empty( $params['appointment_type_id'] ) ) {
			return array(
				'error' => array(
					'code'    => 'appointment_type_required',
					'message' => __( 'An error ocurred, please choose an appointment type before booking.', 'simply-schedule-appointments' ),
					'data'    => array(),
				),
			);
		}

		$appointment_type          = SSA_Appointment_Type_Object::instance( $params['appointment_type_id'] );
		$appointment_type_duration = $appointment_type->duration;
		if ( empty( $appointment_type_duration ) ) {
			return array(
				'error' => array(
					'code'    => 'appointment_type_not_found',
					'message' => __( 'An error ocurred, that appointment type was not found.', 'simply-schedule-appointments' ),
					'data'    => array(),
				),
			);
		}

		if ( ! empty( $params['customer_information']['Email'] ) ) {
			$user_by_email = get_user_by( 'email', sanitize_text_field( $params['customer_information']['Email'] ) );
			if ( ! empty( $user_by_email ) ) {
				$params['customer_id'] = $user_by_email->ID;
			}
		}

		if ( empty( $params['customer_id'] ) ) {
			if ( ! current_user_can( 'ssa_manage_appointments' ) ) {
				$params['customer_id'] = get_current_user_id();
			}
		}

		// if ( empty( $params['selected_resources'] ) ) {
		// 	$params['selected_resources'] = get_current_user_id();
		// }

		$request->set_body_params( $params );

		// Double check availability before we insert
		$appointment_type    = SSA_Appointment_Type_Object::instance( $params['appointment_type_id'] );
		$start_date          = new DateTimeImmutable( $params['start_date'] );
		$is_period_available = $this->is_prospective_appointment_available( $appointment_type, $start_date );

		if ( empty( $is_period_available ) ) {
			return array(
				'error' => array(
					'code'    => 'appointment_unavailable',
					'message' => __( 'Sorry, that time was just booked and is no longer available', 'simply-schedule-appointments' ),
					'data'    => array(),
				),
			);
		}
		$prospective_appointment = SSA_Appointment_Factory::create(
			$appointment_type,
			array(
				'id'         => 0,
				'start_date' => $start_date->format( 'Y-m-d H:i:s' ),
			)
		);
		$params['end_date']      = $prospective_appointment->end_date;
		// if ( apply_filters( 'ssa/scalability/preemptively_clear_cache', false ) ) {
		// $this->plugin->availability_cache_invalidation->invalidate_prospective_appointment( $prospective_appointment );
		// }
		
		// extract meta data
		// Store booking page information
		if ( isset( $params['post_information'] ) ) {
			$appointment_meta = array();

			if ( isset( $params['post_information']['booking_url'] ) && ! empty( $params['post_information']['booking_url'] ) ) {
				$appointment_meta['booking_url'] = esc_url( $params['post_information']['booking_url'] );
			}
			if ( isset( $params['post_information']['booking_post_id'] ) && ! empty( $params['post_information']['booking_post_id'] ) ) {
				$appointment_meta['booking_post_id'] = intval( $params['post_information']['booking_post_id'] );
			}
			if ( isset( $params['post_information']['booking_title'] ) && ! empty( $params['post_information']['booking_title'] ) ) {
				$appointment_meta['booking_title'] = html_entity_decode( urldecode( esc_attr( $params['post_information']['booking_title'] ) ) );
			}
			
			if ( ! empty( $appointment_meta ) ) {
				$params['meta_data'] = $appointment_meta;
			}
		}

		// we've duplicated the code from class-td-api-model.php  so we use explicit (modified) $params, rather than the original $request object passed into the API so we can update the end date
		$insert_id = $this->insert( $params );

		if ( empty( $insert_id ) ) {
			$response = array(
				'response_code' => '500',
				'error'         => 'Not created',
				'data'          => array(),
			);
		} elseif ( is_wp_error( $insert_id ) ) {
			$response = array(
				'response_code' => '500',
				'error'         => true,
				'data'          => $insert_id,
			);
		} elseif ( is_array( $insert_id ) && ! empty( $insert_id['error']['code'] ) ) {
			$response = array(
				'response_code' => $insert_id['error']['code'],
				'error'         => $insert_id['error']['message'],
				'data'          => empty( $insert_id['error']['data'] ) ? [] : $insert_id['error']['data'],
			);
		} else {
			$response = array(
				'response_code' => 200,
				'error'         => '',
				'data'          => $this->get( $insert_id ),
			);
		}

		$response = new WP_REST_Response( $response, 200 );

		if ( is_a( $response->data['data'], 'WP_Error' ) ) {
			return $response;
		}
		if ( ! empty( $response->data['error'] ) ) {
			if ( $response->data['error'] == 'Not created' ) {
				if ( current_user_can( 'ssa_manage_appointments' ) ) {
					$response->data['error'] = __( 'Could not insert appointment into database.', 'simply-schedule-appointments' );
				} else {
					$response->data['error'] = __( 'There was a problem booking your appointment.', 'simply-schedule-appointments' );
				}
			}
			return $response;
		}

		$appointment_object     = new SSA_Appointment_Object( $response->data['data']['id'] );
		$response->data['data'] = $appointment_object->get_data( 0, $params['fetch'] );

		// $response->data['data']['ics']['customer'] = $appointment_object->get_ics( 'customer' )['file_url'];

		// if ( current_user_can( 'ssa_manage_site_settings' ) ) {
		// $response->data['data']['ics']['staff'] = $appointment_object->get_ics( 'staff' )['file_url'];
		// }

		// $response->data['data']['gcal']['customer'] = $appointment_object->get_gcal_add_link( 'customer' );

		return $response;
	}

	public function update_item( $request ) {
		
		$item_id = $request['id'];
		$params  = $request->get_params();
		
		if ( ! empty( $params['appointment_type_id'] ) ) {
			$appointment_type = new SSA_Appointment_Type_Object( $params['appointment_type_id'] );
		} else {
			$appointment      = new SSA_Appointment_Object( $item_id );
			$appointment_type = $appointment->get_appointment_type();
		}
		
		/** @var \undefined|\SSA_Appointment_Object $appointment */
		/** @var SSA_Appointment_Type_Object $appointment_type */
		
		if ( empty( $params['fetch'] ) ) {
			$params['fetch'] = array();
			$request->set_param( 'fetch', $params['fetch'] );
		}

		// TODO: allow staff_id to be specified by booking app
		// if ( isset( $params['staff_ids'] ) ) {
		// if ( ! current_user_can( 'ssa_manage_others_appointments' ) ) {
		// $params['staff_ids'] = false;
		// }
		// }

		if ( empty( $params['start_date'] ) || '0000-00-00 00:00:00' == $params['start_date'] ) {
			if ( isset( $params['start_date'] ) ) {
				unset( $params['start_date'] );
			}
			if ( isset( $params['end_date'] ) ) {
				unset( $params['end_date'] );
			}
		}

		if ( ! empty( $params['start_date'] ) ) {
			try {
				$start_date = ssa_datetime( $params['start_date'] );
				if ( empty( $start_date ) ) {
					return 'invalid_start_date';
				}
				// if the time was changed, confirm availability
				if( isset( $appointment->data['start_date'] ) && $appointment->data['start_date'] !== $params['start_date'] ){
					
					// Make sure to exclude current appointmnent while checking availability
					$args = array( 'excluded_appointment_ids' => array( $item_id ) );
					$is_period_available = $this->is_prospective_appointment_available( $appointment_type, $start_date, $args );
					if ( empty( $is_period_available ) ) {
						return array(
							'error' => array(
								'code'    => 'appointment_unavailable',
								'message' => __( 'Sorry, that time was just booked and is no longer available', 'simply-schedule-appointments' ),
								'data'    => array(),
							),
						);
					}
				}
			} catch ( Exception $e ) {
				return 'invalid_start_date';
			}

			$bookable_period    = Period::after( $start_date, $appointment_type->get_duration_interval() );
			$params['end_date'] = $bookable_period->getEndDate()->format( 'Y-m-d H:i:s' );
		}
		
		// updating appointment meta was not needed here, so we're only using it for tracking the rescheduling
		if( isset( $params['start_date'] ) && isset( $appointment->data['start_date'] ) && $appointment->data['start_date'] !== $params['start_date'] ){
			// construct meta data
			$appointment_meta = $this->get_metas( $item_id );
			if ( ! isset( $appointment_meta['rescheduled_from_start_dates'] ) ) {
				$appointment_meta['rescheduled_from_start_dates'] = array();
			}
			// add the previous start date to the meta
			$appointment_meta['rescheduled_from_start_dates'][] = $appointment->data['start_date'];
			// include the meta data so it gets updated
			$params['meta_data'] = $appointment_meta;
			$capacity_type = $appointment_type->capacity_type;
		
			// if belonged to a group event, remove old event, inherit new one if it exists, or keep empty
			if ( ! empty( $capacity_type ) && $capacity_type === 'group' ) {
				$previous_group_appointments_array = $this->plugin->capacity->get_matching_group_appointments( $appointment->data, $appointment_type );
				// only detach if there are other appointments in the group
				if ( ! empty( $previous_group_appointments_array ) && count( $previous_group_appointments_array ) > 1 ) {
					// default to the current appointment id as group_id, maybe override in the next step
					$params['group_id'] = $item_id;
					// also detach from shared details
					$params['web_meeting_password'] = '';
					$params['web_meeting_id'] = '';
					$params['web_meeting_url'] = '';
					
					// we remove ref to calendar details
					// because if this was the parent, it should not move all group with it
					// if it's not the parent, these will already be empty
					$params['google_calendar_id'] = '';
					$params['google_calendar_event_id'] = '';
				}
				
				$group_appointments_array = $this->plugin->capacity->get_matching_group_appointments( $params, $appointment_type );
				if ( ! empty( $group_appointments_array ) ) {
					// find the parent appointment
					foreach( $group_appointments_array as $index => $group_appointment ){
						if( $group_appointment['id'] != $item_id  && $group_appointment['id'] == $group_appointment['group_id']){
							// copy select fields over from group parent
							$params['group_id'] = $group_appointment['group_id'];
							$params['web_meeting_password'] = $group_appointment['web_meeting_password'];
							$params['web_meeting_id'] = $group_appointment['web_meeting_id'];
							$params['web_meeting_url'] = $group_appointment['web_meeting_url'];
							break;
						}
					}
				}
			}
		}
		
		// if existing appointment has status of booked, prevent updating it to a status of abandoned
		// this can happen in edge cases where the booking app sends an update to mark a booked appointment as abandoned
		// this is not supported behavior so we just prevent it.
		if ( isset( $params['status'] ) && in_array( $params['status'], ['abandoned', 'pending_form']) && isset( $appointment->data['status'] ) && 'booked' === $appointment->data['status'] ) {
			// log stack trace
			ssa_debug_log( "Cannot update status from booked to " . $params['status'], 10 );
			ssa_debug_log( ssa_get_stack_trace(), 10 );
			return array(
				'error' => array(
					'code'    => 'invalid_status',
					'message' => __( 'Cannot update status to abandoned', 'simply-schedule-appointments' ),
					'data'    => array(),
				),
			);
		}
		
		
		$this->update( $item_id, $params );

		$response_array = array(
			'response_code' => 200,
			'error'         => '',
			'data'          => $this->get( $item_id ),
		);

		$response = new WP_REST_Response( $response_array, 200 );

		$appointment_object     = new SSA_Appointment_Object( $item_id );
		$response->data['data'] = $appointment_object->get_data( 0, $params['fetch'] );

		if ( is_a( $response->data['data'], 'WP_Error' ) ) {
			return $response;
		}

		return $response;
	}


	public function register_custom_routes() {
		$namespace = $this->api_namespace . '/v' . $this->api_version;
		$base      = $this->get_api_base();

		register_rest_route(
			$namespace,
			'/' . $base . '/(?P<id>[\d]+)/ics',
			array(
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_item_ics' ),
					'permission_callback' => array( $this, 'get_item_permissions_check' ),
					'args'                => array(
						'context' => array(
							'default' => 'view',
						),
					),
				),
			)
		);

		register_rest_route(
			$namespace,
			'/' . $base . '/(?P<id>[\d]+)/ics/download/customer',
			array(
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'download_item_ics_customer' ),
					'permission_callback' => array( $this, 'id_token_permissions_check' ),
					'args'                => array(
						'context' => array(
							'default' => 'view',
						),
					),
				),
			)
		);

		// Since the ability to download the "staff" ics is only available to staff, we need to check if the current user has permissions.
		register_rest_route(
			$namespace,
			'/' . $base . '/(?P<id>[\d]+)/ics/download/staff',
			array(
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'download_item_ics_staff' ),
					'permission_callback' => array( $this, 'get_item_permissions_check' ),
					'args'                => array(
						'context' => array(
							'default' => 'view',
						),
					),
				),
			)
		);

		register_rest_route(
			$namespace,
			'/' . $base . '/(?P<id>[\d]+)/meta',
			array(
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_item_meta' ),
					'permission_callback' => array( $this, 'get_item_permissions_check' ),
					'args'                => array(
						'context' => array(
							'default' => 'view',
						),
					),
				),
			)
		);

		register_rest_route(
			$namespace,
			'/' . $base . '/(?P<id>[\d]+)/meta',
			array(
				array(
					'methods'             => WP_REST_Server::CREATABLE,
					'callback'            => array( $this, 'update_item_meta' ),
					'permission_callback' => array( $this, 'get_item_permissions_check' ),
					'args'                => array(
						'context' => array(
							'default' => 'view',
						),
					),
				),
			)
		);

		register_rest_route(
			$namespace,
			'/' . $base . '/groups/(?P<id>[\d]+)/cancel',
			array(
				array(
					'methods'             => WP_REST_Server::CREATABLE,
					'callback'            => array( $this, 'group_cancel' ),
					'permission_callback' => array( $this, 'get_items_permissions_check' ),
					'args'                => array(
						'context' => array(
							'default' => 'view',
						),
					),
				),
			)
		);

		register_rest_route(
			$namespace,
			'/' . $base . '/groups/(?P<id>[\d]+)/delete',
			array(
				array(
					'methods'             => WP_REST_Server::CREATABLE,
					'callback'            => array( $this, 'group_delete' ),
					'permission_callback' => array( $this, 'get_items_permissions_check' ),
					'args'                => array(
						'context' => array(
							'default' => 'view',
						),
					),
				),
			)
		);

		register_rest_route(
			$namespace,
			'/' . $base . '/purge',
			array(
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'purge_appointments' ),
					'permission_callback' => array( $this, 'get_items_permissions_check' ),
				),
			)
		);

		register_rest_route(
			$namespace,
			'/' . $base . '/availability/(?P<id>[\d]+)',
			array(
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'availability' ),
					'permission_callback' => array( $this, 'get_items_permissions_check' ),
				),
			)
		);
	}

	/**
	 * Check if the appointment time slot is still available
	 * Needed when changing the status from canceled/abandoned to booked
	 *
	 * @since 6.4.17
	 *
	 * @param WP_REST_Request $request the Request object.
	 * @return WP_REST_Response
	 */
	public function availability( WP_REST_Request $request ) {
		$params = $request->get_params();
		$appointment_obj  = new SSA_Appointment_Object( $params['id'] );

		// Don't check for reserved statuses
		if ( $appointment_obj->is_reserved() ) {
			$data = array(
				'result' => 'reserved',
				'message' => __( 'This time slot is reserved for this appointment', 'simply-schedule-appointments' ),
			);
			$response = array(
				'response_code' => 200,
				'error'         => '',
				'data'          => $data,
			);
	
			return new WP_REST_Response( $response, 200 );
		}


		// check if a time slot is still available
		$is_period_available = $this->is_prospective_appointment_available( $appointment_obj->get_appointment_type(), $appointment_obj->start_date_datetime );
		
		if ( empty( $is_period_available ) ) {
			// time slot already booked
			$data = array(
				'result' => 'unavailable',
				'message' => __( 'The time slot for this appointment was booked and is no longer available.', 'simply-schedule-appointments' ),
				);
		} else {
			$data = array(
				'result' => 'available',
				'message' => __( 'The time slot for this appointment is still available.', 'simply-schedule-appointments' ),
			);
		}

		$response = array(
			'response_code' => 200,
			'error'         => '',
			'data'          => $data,
		);

		return new WP_REST_Response( $response, 200 );
	}

	/**
	 * Get a collection of items
	 *
	 * @param WP_REST_Request $request Full data about the request.
	 * @return WP_Error|WP_REST_Response
	 */
	public function get_items( $request ) {
		$params = $request->get_params();
		if ( is_user_logged_in() && ! current_user_can( 'ssa_manage_others_appointments' ) ) {

			global $wpdb;
			if ( ! current_user_can( 'ssa_manage_appointments' ) ) {
				$params['customer_id'] = get_current_user_id();
			} else {
				$params['append_where_sql'] = $wpdb->prepare( ' AND id IN (SELECT appointment_id FROM ' . ssa()->staff_appointment_model->get_table_name() . ' WHERE staff_id = %d)', $this->plugin->staff_model->get_staff_id_for_user_id( get_current_user_id() ) );
			}
		}

		$schema = $this->get_schema();

		// Check if format=ics is defined.
		$is_ics = false;
		if ( isset( $params['format'] ) && 'ics' === $params['format'] ) {
			$is_ics = true;
			unset( $params['format'] );

			$params['fields'] = array( 'id' );
		}

		$data = $this->query( $params );
		
		foreach( $data as $index => $appointment ) {
			$data[$index] = $this->format_multiline_customer_information($appointment);
		}
		
		if ( $is_ics ) {
			$appointments = array_map(
				function( $row ) {
					return new SSA_Appointment_Object( $row['id'] );
				},
				$data
			);

			$ics_exporter           = new SSA_Ics_Exporter();
			$ics_exporter->template = 'customer';
			$ics_feed               = $ics_exporter->get_ics_feed( $appointments, 'staff' );

			foreach ( $ics_feed['headers'] as $header_key => $header_value ) {
				header( $header_key . ': ' . $header_value );
			}

			echo $ics_feed['data']; // phpcs:ignore WordPress.Security.EscapeOutput 
			exit;
		} else {
			$data = $this->prepare_collection_for_api_response( $data );

			$response = array(
				'response_code' => 200,
				'error'         => '',
				'data'          => $data,
			);

			return new WP_REST_Response( $response, 200 );

		}
	}

	public function get_items_permissions_check( $request ) {
		if ( current_user_can( 'ssa_manage_others_appointments' ) ) {
			return true;
		}

		if ( current_user_can( 'ssa_manage_appointments' ) ) {
			return true;
		}
		$settings = ssa()->settings->get();

		$params = $request->get_params();

		if ( ! empty( $params['token'] ) && $params['token'] == $settings['global']['public_read_access_token'] ) {
			return true;
		}

		if ( true === parent::get_item_permissions_check( $request ) ) {
			return true;
		}

		if ( true === $this->id_token_permissions_check( $request ) ) {
			return true;
		}

		if ( true === $this->token_permissions_check( $request ) ) {
			return true;
		}

		return false;
	}

	public function get_item_permissions_check( $request ) {
		if ( current_user_can( 'ssa_manage_others_appointments' ) ) {
			return true;
		}

		if ( current_user_can( 'ssa_manage_appointments' ) ) {
			return true;
		}

		$params = $request->get_params();
		if ( true === parent::get_item_permissions_check( $request ) ) {
			return true;
		}

		if ( true === $this->id_token_permissions_check( $request ) ) {
			return true;
		}

		if ( is_user_logged_in() ) {
			$appointment = new SSA_Appointment_Object( $params['id'] );
			if ( $appointment->customer_id == get_current_user_id() ) {
				return true;
			}
		}

		return apply_filters( 'ssa/appointment/get_item_permissions_check', false, $params, $request );
	}

	/**
	 * Given a specific appointment ID, return the download url for the .ics file(s).
	 *
	 * @param WP_REST_Request $request Full data about the request.
	 * @return WP_REST_Response $response The response data.
	 */
	public function get_item_ics( $request ) {
		$params       = $request->get_params();
		$appointment  = new SSA_Appointment_Object( $params['id'] );
		$customer_ics = $appointment->get_ics_download_url( 'customer' );
		$response     = array(
			'customer' => $customer_ics,
		);

		if ( current_user_can( 'ssa_manage_appointments' ) ) {
			$staff_ics         = $appointment->get_ics_download_url( 'customer' );
			$response['staff'] = $staff_ics;
		}

		return new WP_REST_Response( $response, 200 );
	}

	/**
	 * Returns the REST API base for the ICS endpoint.
	 *
	 * @since 5.4.4
	 *
	 * @return string
	 */
	public function get_ics_endpoints_base() {
		$namespace = $this->api_namespace . '/v' . $this->api_version;
		$base      = $this->get_api_base();

		return get_rest_url( null, $namespace . '/' . $base . '/' );
	}

	/**
	 * Given a specific appointment ID, generate the .ics file content for download, set up the headers, and print the content.
	 *
	 * @since 5.4.4
	 *
	 * @param WP_REST_Request $request Full data about the request.
	 * @return WP_REST_Response $response The response data.
	 */
	public function download_item_ics_customer( $request ) {
		$params             = $request->get_params();
		$appointment_object = new SSA_Appointment_Object( $params['id'] );
		$customer_ics       = $appointment_object->get_ics( 'customer' );

		foreach ( $customer_ics['headers'] as $header_key => $header_value ) {
			header( $header_key . ': ' . $header_value );
		}

		echo $customer_ics['data']; // phpcs:ignore WordPress.Security.EscapeOutput 
		exit;
	}

	/**
	 * Given a specific appointment ID, generate the .ics file content for download, set up the headers, and print the content.
	 *
	 * @since 5.4.4
	 *
	 * @param WP_REST_Request $request Full data about the request.
	 * @return WP_REST_Response $response The response data.
	 */
	public function download_item_ics_staff( $request ) {
		$params             = $request->get_params();
		$appointment_object = new SSA_Appointment_Object( $params['id'] );
		$staff_ics          = $appointment_object->get_ics( 'staff' );

		foreach ( $staff_ics['headers'] as $header_key => $header_value ) {
			header( $header_key . ': ' . $header_value );
		}

		echo $staff_ics['data']; // phpcs:ignore WordPress.Security.EscapeOutput 
		exit;
	}

	public function insert( $data, $type = '' ) {
		$response = array();

		$wp_error = new WP_Error();
		if ( empty( $data['appointment_type_id'] ) ) {
			$wp_error->add( 422, 'appointment_type_id required' );
		}
		if ( empty( $data['start_date'] ) ) {
			$wp_error->add( 422, 'start_date required' );
		}
		if ( empty( $data['customer_information'] ) ) {
			if ( empty( $data['status'] ) || $data['status'] !== 'pending_form' ) {
				$wp_error->add( 422, 'customer_information required' );
			}
		}

		if ( ! empty( $wp_error->errors ) ) {
			return $wp_error;
		}

		ssa_defensive_timezone_fix();
		$data['appointment_type_id'] = sanitize_text_field( $data['appointment_type_id'] );
		$data['start_date']          = sanitize_text_field( $data['start_date'] );
		if ( empty( $data['start_date'] ) ) {
			return 'invalid_start_date';
		}
		try {
			$start_date = ssa_datetime( $data['start_date'] );
			if ( empty( $start_date ) ) {
				return 'invalid_start_date';
			}
		} catch ( Exception $e ) {
			return 'invalid_start_date';
		}

		$appointment_type = $this->plugin->appointment_type_model->get( $data['appointment_type_id'] );
		$bookable_period  = Period::after( $start_date, new DateInterval( 'PT' . $appointment_type['duration'] . 'M' ) );
		$data['end_date'] = $bookable_period->getEndDate()->format( 'Y-m-d H:i:s' );
		if ( false !== strpos( $data['customer_timezone'], 'Etc/' ) ) {
			$data['customer_timezone'] = '';
		}

		$appointment_id = parent::insert( $data, $type );

		ssa_defensive_timezone_reset();
		return $appointment_id;
	}

	public function get_staff_ids( $appointment_id, $appointment = array() ) {
		if ( ! $this->plugin->settings_installed->is_enabled( 'staff' ) ) {
			return array();
		}

		$cache_key = 'appointment/' . $appointment_id . '/staff_ids';
		$cached    = ssa_cache_get( $cache_key );
		if ( $cached !== false ) {
			return $cached;
		}

		$data = $this->plugin->staff_appointment_model->get_staff_ids( $appointment_id );
		ssa_cache_set(
			$cache_key,
			$data,
			'',
			5
		);

		return $data;
	}

	public function get_selected_resources($appointment_id, $appointment = array()) {
		if ( ! $this->plugin->settings_installed->is_enabled( 'resources' ) ) {
			return array();
		}

		$cache_key = 'appointment/' . $appointment_id . '/resources';
		$cached    = ssa_cache_get( $cache_key );
		if ( $cached !== false ) {
			return $cached;
		}

		$data = $this->plugin->resource_appointment_model->get_resources( $appointment_id );
		ssa_cache_set(
			$cache_key,
			$data,
			'',
			5
		);

		return $data;
	}

	public function get_public_edit_url( $appointment_id, $appointment = array() ) {
		$appointment['id'] = $appointment_id;
		$token             = $this->get_id_token( $appointment );
		
		// Get Correct Url and Add Appointment Token
		$url = home_url();
		$settings_global = ssa()->settings->get()['global'];
		$edit_appointment_page_id = apply_filters( 'ssa/edit_appointment_page_id', $settings_global['edit_appointment_page_id'], $appointment_id );
		$edit_appointment_page_link = get_permalink( $edit_appointment_page_id );
		
		if ( !empty($edit_appointment_page_id) && !empty($edit_appointment_page_link)) {
			$url = $edit_appointment_page_link;
		}

		$url = add_query_arg(
			array(
				'appointment_action' => 'edit',
				'appointment_token'  => $token . $appointment_id,)
			, $url
		);

		return $url;
	}

	public function deprecated_get_public_edit_url( $appointment_id, $appointment = array() ) {
		$appointment['id'] = $appointment_id;
		$token             = $this->get_id_token( $appointment );
		$url               = home_url( trailingslashit( $this->plugin->shortcodes->get_appointment_edit_permalink() ) . $token . $appointment_id );
		return $url;
	}

	public function get_admin_edit_url( $appointment_id, $appointment = array() ) {
		$url = $this->plugin->wp_admin->url( 'ssa/appointment/' . $appointment_id );
		return $url;
	}

	public function prepare_item_for_response( $item, $recursive = 0 ) {
		$item = parent::prepare_item_for_response( $item, $recursive );

		if ( $recursive >= 0 ) {
			$item['public_edit_url'] 	  = $this->get_public_edit_url( $item['id'], $item );
			$item['public_token']    	  = $this->get_id_token( $item['id'] );
			$item['staff_ids']       	  = $this->get_staff_ids( $item['id'] );
			$item['selected_resources'] = $this->get_selected_resources( $item['id'] );
			$item['label_id']		        = $this->get_label_id( $item['id'] );
			$item['rescheduling_note']  = $this->get_rescheduling_note( $item['id'] );
			$item['meta']            	  = $this->get_metas( $item['id'] );
			$item['payments']						= $this->get_payments_for_appointment( $item['id'] );
		}

		return $item;
	}

	public function get_rescheduling_note( $id ) {
		$meta = $this->get_metas( $id, array( 'rescheduling_note' ) );
		return isset( $meta['rescheduling_note'] ) ? $meta['rescheduling_note'] : "";
	}

	/**
	 * Get the payments for a specific appointment.
	 * Only returns payments if the payments module is installed and enabled.
	 *
	 * @param [type] $appointment_id
	 * @return void
	 */
	public function get_payments_for_appointment( $appointment_id ) {
		if ( ! $this->plugin->settings_installed->is_enabled( 'payments' ) ) {
			return array();
		}
		return $this->plugin->payment_model->query( array( 'appointment_id' => $appointment_id ) );
	}

	/**
	 * DEPRECATED: Alias function for backward compatibility.
	 *
	 * This function is deprecated and should not be used in new code.
	 * It is provided only for backward compatibility with older versions.
	 * Please use the recommended alternative bulk_meta_update() instead.
	 *
	 * @deprecated Deprecated since version 6.5.8
	 *
	 * @see bulk_meta_update()
	 */
	public function update_metas( $appointment_id, array $meta_keys_and_values ) {
		return $this->plugin->appointment_meta_model->bulk_meta_update( $appointment_id, $meta_keys_and_values  );
	}

	public function get_item_meta( $request ) {
		$params         = $request->get_params();
		$appointment_id = esc_attr( $params['id'] );

		$data = array();
		if ( empty( $params['keys'] ) ) {
			$data = $this->get_metas( $appointment_id );
		} elseif ( is_string( $params['keys'] ) ) {
			$data = array(
				$params['keys'] => $this->get_meta( $appointment_id, $params['keys'] ),
			);
		} elseif ( is_array( $params['keys'] ) ) {
			$data = $this->get_metas( $appointment_id, $params['keys'] );
		}

		$response = array(
			'response_code' => 200,
			'error'         => '',
			'data'          => $data,
		);

		return new WP_REST_Response( $response, 200 );
	}

	public function update_item_meta( $request ) {
		$params         = $request->get_params();
		$appointment_id = esc_attr( $params['id'] );

		if(isset($params['meta'])){
			$metas = $params['meta'];
		} else {
			$metas = $params;
		}

		$meta_keys_and_values = array();
		$excluded_keys        = array( 'id', 'context' );
		foreach ( $metas as $key => $value ) {
			if ( in_array( $key, $excluded_keys ) ) {
				continue;
			}

			$meta_keys_and_values[ $key ] = esc_attr( trim( $value ) );
		}

		$this->plugin->{$this->slug.'_meta_model'}->bulk_meta_update( $appointment_id, $meta_keys_and_values );

		$response = array(
			'response_code' => 200,
			'error'         => '',
			'data'          => $meta_keys_and_values,
		);

		return new WP_REST_Response( $response, 200 );
	}

	public function get_metas( $appointment_id, array $meta_keys = array() ) {
		$data = array();

		if ( empty( $meta_keys ) ) {
			// return all keys and values
			$rows = $this->plugin->appointment_meta_model->query(
				array(
					'appointment_id' => $appointment_id,
				)
			);
			foreach ( $rows as $key => $row ) {
				$data[ $row['meta_key'] ] = $row['meta_value'];
			}
		}

		if ( count( $meta_keys ) > 3 ) {
			// For performance, perform single SQL query and filter in PHP
			// instead of running lots of individual queries against meta table
			$rows = $this->plugin->appointment_meta_model->query(
				array(
					'appointment_id' => $appointment_id,
				)
			);

			foreach ( $rows as $key => $row ) {
				if ( ! empty( $meta_keys ) && ! in_array( $row['meta_key'], $meta_keys ) ) {
					continue; // request only asked for certain keys and this isn't one of them
				}

				$data[ $row['meta_key'] ] = $row['meta_value'];
			}

			foreach ( $meta_keys as $key ) {
				if ( ! isset( $data[ $key ] ) ) {
					$data[ $key ] = null;
				}
			}
			foreach ( $data as $key => $value ) {
				if ( ! in_array( $key, $meta_keys ) ) {
					unset( $data[ $key ] );
				}
			}
		} else {
			foreach ( $meta_keys as $meta_key ) {
				$data[ $meta_key ] = $this->get_meta( $appointment_id, $meta_key );
			}
		}

		return $data;
	}

	public function get_meta( $appointment_id, $meta_key ) {
		$data = $this->plugin->appointment_meta_model->query(
			array(
				'appointment_id' => $appointment_id,
				'meta_key'       => $meta_key,
				'order_by'       => 'id',
				'order'          => 'DESC',
				'limit'          => 1,
			)
		);

		if ( empty( $data['0'] ) ) {
			return null;
		}

		return $data['0']['meta_value'];
	}

	public function delete_abandoned( DateTimeImmutable $date_modified_max = null ) {
		global $wpdb;
		if ( empty( $date_modified_max ) ) {
			$date_modified_max = ssa_datetime( '-1 day' );
		}

		$sql = 'DELETE FROM ' . $this->get_table_name() . ' WHERE status = "abandoned" AND date_modified < %s';
		$sql = $wpdb->prepare(
			$sql,
			$date_modified_max->format( 'Y-m-d H:i:s' )
		);

		$wpdb->get_results( $sql );
	}

	public function update_rescheduled_to_appointment_id( $appointment_id, $data, $data_before = array() ) {
		if ( empty( $data['rescheduled_from_appointment_id'] ) ) {
			return;
		}
		
		$rescheduled_from_appointment_id = $data['rescheduled_from_appointment_id'];

		if ( $rescheduled_from_appointment_id ) {
			// Get Payment ID of Previous Appointment
			$payments = $this->plugin->payment_model->query( array(
				'appointment_id' => $rescheduled_from_appointment_id,
			) );

			foreach ($payments as $key => $payment) {
				// Update Associated Payments to Point to New Appointment
				$this->plugin->payment_model->update( $payment["id"], ["appointment_id" => $appointment_id] );
			}

			$this->update(
				$rescheduled_from_appointment_id,
				array(
					'rescheduled_to_appointment_id' => $appointment_id,
				)
			);
		}
	}

	/**
	 * Purge past and / or deleted appointments. Also generates a .csv backup file and returns it's url.
	 *
	 * @since 4.8.9
	 *
	 * @param WP_REST_Request $request the Request object.
	 * @return WP_REST_Response
	 */
	public function purge_appointments( WP_REST_Request $request ) {
		$params = $request->get_params();

		global $wpdb;
		$date_modified_max = ssa_datetime();

		// Combine past and future canceled appointments into one condition.
		if ( isset( $params['purge_past_canceled_appointments'] ) && 'true' === $params['purge_past_canceled_appointments'] && isset( $params['purge_future_canceled_appointments'] ) && 'true' === $params['purge_future_canceled_appointments'] ) {
			$params['purge_all_canceled_appointments'] = 'true';
			unset( $params['purge_past_canceled_appointments'] );
			unset( $params['purge_future_canceled_appointments'] );
		}

		// Unset past canceled if past appointments is already selected
		if ( isset( $params['purge_past_appointments'] ) && 'true' === $params['purge_past_appointments'] && isset( $params['purge_past_canceled_appointments'] ) && 'true' === $params['purge_past_canceled_appointments'] ) {
			unset( $params['purge_past_canceled_appointments'] );
		}

		$conditions = array();
		if ( isset( $params['purge_abandoned_appointments'] ) && 'true' === $params['purge_abandoned_appointments'] ) {
			$conditions[] = 'status = "abandoned"';
		}

		if ( isset( $params['purge_past_appointments'] ) && 'true' === $params['purge_past_appointments'] ) {
			$conditions[] = $wpdb->prepare( 'end_date < %s', $date_modified_max->format( 'Y-m-d' ) );
		}

		if ( isset( $params['purge_past_appointments'] ) &&  'false' === $params['purge_abandoned_appointments'] && isset( $params['purge_past_canceled_appointments'] ) && 'true' === $params['purge_past_canceled_appointments'] ) {
			$conditions[] = $wpdb->prepare( '(status = "canceled" AND end_date < %s)', $date_modified_max->format( 'Y-m-d' ) );
		}

		if ( isset( $params['purge_future_canceled_appointments'] ) && 'true' === $params['purge_future_canceled_appointments'] ) {
			$conditions[] = $wpdb->prepare( '(status = "canceled" AND end_date > %s)', $date_modified_max->format( 'Y-m-d' ) );
		}

		if ( isset( $params['purge_all_canceled_appointments'] ) && 'true' === $params['purge_all_canceled_appointments'] ) {
			$conditions[] = 'status = "canceled"';
		}

		if ( empty( $conditions ) ) {
			return new WP_REST_Response( __( 'Nothing to delete.', 'simply-schedule-appointments' ), 404 );
		}

		// first, let's get a list of all appointments that will be deleted.
		$sql  = 'SELECT * FROM ' . $this->get_table_name() . ' WHERE ' . implode( ' OR ', $conditions );
		$list = $wpdb->get_results( $sql, ARRAY_A );

		if ( empty( $list ) ) {
			return new WP_REST_Response( __( 'No appointments found to be deleted.', 'simply-schedule-appointments' ), 404 );
		}

		// before we delete the appointments, we need to generate a .csv file containing a backup.
		$csv = $this->generate_appointments_backup( $list );

		// if something went wrong, bail.
		if ( is_wp_error( $csv ) ) {
			return new WP_REST_Response( $csv->get_error_message(), 500 );
		}

		$sql = 'DELETE FROM ' . $this->get_table_name() . ' WHERE ' . implode( ' OR ', $conditions );

		$sql = $wpdb->prepare(
			$sql,
			$date_modified_max->format( 'Y-m-d' )
		);

		$results = $wpdb->query( $sql );

		if ( false === $results ) {
			return new WP_REST_Response( __( 'Something went wrong while deleting the appointments. Please try again.', 'simply-schedule-appointments' ), 500 );
		}

		return new WP_REST_Response( $csv, 200 );
	}

	/**
	 * Given some search conditions, generate and store a .csv file of appointments.
	 *
	 * @since 4.8.9
	 *
	 * @param array $list An array of appointments.
	 * @return array|WP_Error
	 */
	public function generate_appointments_backup( $list ) {
		$csv = $this->plugin->csv_exporter->get_csv( $list );

		return $csv;
	}

	public function get_label_id( $id ){
		$appointment_object = new SSA_Appointment_Object( $id );
		return $appointment_object->get_label_id();
	}
}
