<?php

/*
  FusionPBX
  Version: MPL 1.1

  The contents of this file are subject to the Mozilla Public License Version
  1.1 (the "License"); you may not use this file except in compliance with
  the License. You may obtain a copy of the License at
  http://www.mozilla.org/MPL/

  Software distributed under the License is distributed on an "AS IS" basis,
  WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  for the specific language governing rights and limitations under the
  License.

  The Original Code is FusionPBX

  The Initial Developer of the Original Code is
  Mark J Crane <markjcrane@fusionpbx.com>
  Copyright (C) 2010 - 2025
  All Rights Reserved.

  Contributor(s):
  Mark J Crane <markjcrane@fusionpbx.com>
  Luis Daniel Lucio Quiroz <dlucio@okay.com.mx>
  Errol Samuels <voiptology@gmail.com>

 */

//define the call_forward class
class call_forward {

	/**
	 * declare constant variables
	 */
	const app_name = 'call_forward';
	const app_uuid = '19806921-e8ed-dcff-b325-dd3e5da4959d';

	/**
	 * Domain UUID set in the constructor. This can be passed in through the $settings_array associative array or set
	 * in the session global array
	 *
	 * @var string
	 */
	public $domain_uuid;

	/**
	 * Domain name set in the constructor. This can be passed in through the $settings_array associative array or set
	 * in the session global array
	 *
	 * @var string
	 */
	public $domain_name;

	/**
	 * declare public variables
	 */
	public $debug;
	public $extension_uuid;
	public $forward_all_destination;
	public $forward_all_enabled;
	public $accountcode;
	public $outbound_caller_id_name;
	public $outbound_caller_id_number;

	/**
	 * Set in the constructor. Must be a database object and cannot be null.
	 *
	 * @var database Database Object
	 */
	private $database;

	/**
	 * Settings object set in the constructor. Must be a settings object and cannot be null.
	 *
	 * @var settings Settings Object
	 */
	private $settings;

	/**
	 * User UUID set in the constructor. This can be passed in through the $settings_array associative array or set in
	 * the session global array
	 *
	 * @var string
	 */
	private $user_uuid;

	/**
	 * declare private variables
	 */
	private $extension;
	private $number_alias;
	private $toll_allow;
	private $toggle_field;
	private $toggle_values;

	/**
	 * Initializes the object with setting array.
	 *
	 * @param array $setting_array An array containing settings for domain, user, and database connections. Defaults to
	 *                             an empty array.
	 *
	 * @return void
	 */
	public function __construct(array $setting_array = []) {
		//set domain and user UUIDs
		$this->domain_uuid = $setting_array['domain_uuid'] ?? $_SESSION['domain_uuid'] ?? '';
		$this->domain_name = $setting_array['domain_name'] ?? $_SESSION['domain_name'] ?? '';
		$this->user_uuid   = $setting_array['user_uuid'] ?? $_SESSION['user_uuid'] ?? '';

		//set objects
		$this->database = $setting_array['database'] ?? database::new();
		$this->settings = $setting_array['settings'] ?? new settings(['database' => $this->database, 'domain_uuid' => $this->domain_uuid, 'user_uuid' => $this->user_uuid]);

		//assign private variables
		$this->toggle_field  = 'forward_all_enabled';
		$this->toggle_values = ['true', 'false'];
	}

	/**
	 * Sets the extension with the provided values.
	 *
	 * @return void
	 */
	public function set() {

		//determine whether to update the dial string
		$sql                          = "select * from v_extensions ";
		$sql                          .= "where domain_uuid = :domain_uuid ";
		$sql                          .= "and extension_uuid = :extension_uuid ";
		$parameters['domain_uuid']    = $this->domain_uuid;
		$parameters['extension_uuid'] = $this->extension_uuid;
		$row                          = $this->database->select($sql, $parameters, 'row');
		if (is_array($row) && @sizeof($row) != 0) {
			$this->extension                 = $row["extension"];
			$this->number_alias              = $row["number_alias"];
			$this->accountcode               = $row["accountcode"];
			$this->toll_allow                = $row["toll_allow"];
			$this->outbound_caller_id_name   = $row["outbound_caller_id_name"];
			$this->outbound_caller_id_number = $row["outbound_caller_id_number"];
		}
		unset($sql, $parameters, $row);

		//build extension update array
		$array['extensions'][0]['extension_uuid']          = $this->extension_uuid;
		$array['extensions'][0]['forward_all_destination'] = strlen($this->forward_all_destination) != 0 ? $this->forward_all_destination : null;
		if (empty($this->forward_all_destination) || $this->forward_all_enabled == "false") {
			$array['extensions'][0]['forward_all_enabled'] = 'false';
		} else {
			$array['extensions'][0]['forward_all_enabled'] = 'true';
		}

		//grant temporary permissions
		$p = permissions::new();
		$p->add('extension_add', 'temp');

		//execute update
		$this->database->save($array);
		unset($array);

		//revoke temporary permissions
		$p->delete('extension_add', 'temp');

		//delete extension from the cache
		$cache = new cache;
		$cache->delete(gethostname() . ":directory:" . $this->extension . "@" . $this->domain_name);
		if (!empty($this->number_alias)) {
			$cache->delete(gethostname() . ":directory:" . $this->number_alias . "@" . $this->domain_name);
		}
	}

	/**
	 * Toggles the state of one or more records.
	 *
	 * @param array $records  An array of record IDs to delete, where each ID is an associative array
	 *                        containing 'uuid' and 'checked' keys. The 'checked' value indicates
	 *                        whether the corresponding checkbox was checked for deletion.
	 *
	 * @return void No return value; this method modifies the database state and sets a message.
	 */
	public function toggle(array $records) {

		//add multi-lingual support
		$language = new text;
		$text     = $language->get();

		//validate the token
		$token = new token;
		if (!$token->validate($_SERVER['PHP_SELF'])) {
			message::add($text['message-invalid_token'], 'negative');
			header('Location: calls.php');
			exit;
		}

		//validate there are records to process
		if (count($records) < 1) return;

		//check we have permission for this action
		if (permission_exists('call_forward')) {

			// initialize an empty array
			$uuids      = [];
			$extensions = [];

			//get current toggle state
			foreach ($records as $x => $record) {
				if (!empty($record['checked']) && $record['checked'] == 'true' && is_uuid($record['uuid'])) {
					$uuids[] = "'" . $record['uuid'] . "'";
				}
			}

			//toggle the checked records
			if (count($uuids) > 0) {
				$sql                       = "select extension_uuid as uuid, extension, number_alias, ";
				$sql                       .= "call_timeout, do_not_disturb, ";
				$sql                       .= "forward_all_enabled, forward_all_destination, ";
				$sql                       .= "forward_busy_enabled, forward_busy_destination, ";
				$sql                       .= "forward_no_answer_enabled, forward_no_answer_destination, ";
				$sql                       .= $this->toggle_field . " as toggle, follow_me_uuid ";
				$sql                       .= "from v_extensions ";
				$sql                       .= "where (domain_uuid = :domain_uuid or domain_uuid is null) ";
				$sql                       .= "and extension_uuid in (" . implode(', ', $uuids) . ") ";
				$parameters['domain_uuid'] = $this->domain_uuid;
				$rows                      = $this->database->select($sql, $parameters, 'all');
				if (is_array($rows) && @sizeof($rows) != 0) {
					foreach ($rows as $row) {
						$extensions[$row['uuid']]['extension']                     = $row['extension'];
						$extensions[$row['uuid']]['number_alias']                  = $row['number_alias'];
						$extensions[$row['uuid']]['call_timeout']                  = $row['call_timeout'];
						$extensions[$row['uuid']]['do_not_disturb']                = $row['do_not_disturb'];
						$extensions[$row['uuid']]['forward_all_enabled']           = $row['forward_all_enabled'];
						$extensions[$row['uuid']]['forward_all_destination']       = $row['forward_all_destination'];
						$extensions[$row['uuid']]['forward_busy_enabled']          = $row['forward_busy_enabled'];
						$extensions[$row['uuid']]['forward_busy_destination']      = $row['forward_busy_destination'];
						$extensions[$row['uuid']]['forward_no_answer_enabled']     = $row['forward_no_answer_enabled'];
						$extensions[$row['uuid']]['forward_no_answer_destination'] = $row['forward_no_answer_destination'];
						$extensions[$row['uuid']]['state']                         = $row['toggle'];
						$extensions[$row['uuid']]['follow_me_uuid']                = $row['follow_me_uuid'];
					}
				}
				unset($sql, $parameters, $rows, $row);
			}

			//build update array
			$x = 0;
			foreach ($extensions as $uuid => $extension) {

				//check destination
				$destination_exists = $extension['forward_all_destination'] != '' ? true : false;

				//determine new state
				$new_state = $extension['state'] == $this->toggle_values[1] && $destination_exists ? $this->toggle_values[0] : $this->toggle_values[1];

				//toggle feature
				if ($new_state != $extension['state']) {
					$array['extensions'][$x]['extension_uuid']    = $uuid;
					$array['extensions'][$x][$this->toggle_field] = $new_state;
				}

				//disable other features
				if ($new_state == $this->toggle_values[0]) { //true
					$array['extensions'][$x]['do_not_disturb']    = $this->toggle_values[1]; //false
					$array['extensions'][$x]['follow_me_enabled'] = $this->toggle_values[1]; //false
					if (is_uuid($extension['follow_me_uuid'])) {
						$array['follow_me'][$x]['follow_me_uuid']    = $extension['follow_me_uuid'];
						$array['follow_me'][$x]['follow_me_enabled'] = $this->toggle_values[1]; //false
					}
				}

				//increment counter
				$x++;
			}

			//save the changes
			if (is_array($array) && @sizeof($array) != 0) {

				//grant temporary permissions
				$p = permissions::new();
				$p->add('extension_edit', 'temp');

				//save the array
				$this->database->save($array);
				unset($array);

				//revoke temporary permissions
				$p->delete('extension_edit', 'temp');

				//send feature event notify to the phone
				if ($this->settings->get('device', 'feature_sync', false)) {
					foreach ($extensions as $uuid => $extension) {
						$feature_event_notify                            = new feature_event_notify;
						$feature_event_notify->domain_name               = $this->domain_name;
						$feature_event_notify->extension                 = $extension['extension'];
						$feature_event_notify->do_not_disturb            = $extension['do_not_disturb'];
						$feature_event_notify->ring_count                = ceil($extension['call_timeout'] / 6);
						$feature_event_notify->forward_all_enabled       = $extension['forward_all_enabled'];
						$feature_event_notify->forward_busy_enabled      = $extension['forward_busy_enabled'];
						$feature_event_notify->forward_no_answer_enabled = $extension['forward_no_answer_enabled'];
						//workarounds: send 0 as freeswitch doesn't send NOTIFY when destination values are nil
						$feature_event_notify->forward_all_destination       = $extension['forward_all_destination'] != '' ? $extension['forward_all_destination'] : '0';
						$feature_event_notify->forward_busy_destination      = $extension['forward_busy_destination'] != '' ? $extension['forward_busy_destination'] : '0';
						$feature_event_notify->forward_no_answer_destination = $extension['forward_no_answer_destination'] != '' ? $extension['forward_no_answer_destination'] : '0';
						$feature_event_notify->send_notify();
						unset($feature_event_notify);
					}
				}

				//synchronize configuration
				if (!empty($this->settings->get('switch', 'extensions')) && is_readable($this->settings->get('switch', 'extensions'))) {
					$ext = new extension;
					$ext->xml();
					unset($ext);
				}

				//clear the cache
				$cache = new cache;
				foreach ($extensions as $uuid => $extension) {
					$cache->delete(gethostname() . ":directory:" . $extension['extension'] . "@" . $_SESSION['domain_name']);
					if ($extension['number_alias'] != '') {
						$cache->delete(gethostname() . ":directory:" . $extension['number_alias'] . "@" . $_SESSION['domain_name']);
					}
				}

				//set message
				message::add($text['message-toggle']);
			}
			unset($records, $extensions, $extension);
		}
	}

}

?>