<?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>
 Portions created by the Initial Developer are Copyright (C) 2008-2025
 the Initial Developer. All Rights Reserved.

 Contributor(s):
 Mark J Crane <markjcrane@fusionpbx.com>
*/

//define the fax class
class fax {

	/**
	 * declare constant variables
	 */
	const app_name = 'fax';
	const app_uuid = '24108154-4ac3-1db6-1551-4731703a4440';

	/**
	 * 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;

	/**
	 * define the variables
	 */
	public $fax_uuid;
	public $dialplan_uuid;
	public $fax_name;
	public $fax_description;
	public $fax_extension;
	public $fax_forward_number;
	public $destination_number;
	public $box;
	public $order_by;
	public $order;
	public $download;

	/**
	 * 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;

	/**
	 * 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
	 */
	private $domain_name;

	/**
	 * declare private variables
	 */
	private $permission_prefix;
	private $list_page;
	private $table;
	private $uuid_prefix;
	private $toggle_field;
	private $toggle_values;
	private $forward_prefix;

	/**
	 * 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]);
	}

	/**
	 * Processes and saves a dial plan for faxing.
	 *
	 * This method normalizes fax forward numbers, sets the forward prefix,
	 * builds an XML dial plan, and saves it to the database. It also clears
	 * any existing cache and removes temporary permissions after saving.
	 *
	 * @return mixed|null The UUID of the saved dialplan or null if not saved.
	 */
	public function dialplan() {

		//require the fax_extension
		if (empty($this->fax_extension)) {
			return false;
		}

		//require the destination_number
		if (empty($this->destination_number)) {
			return false;
		}

		//normalize the fax forward number
		if (strlen($this->fax_forward_number) > 3) {
			//$fax_forward_number = preg_replace("~[^0-9]~", "",$fax_forward_number);
			$this->fax_forward_number = str_replace(" ", "", $this->fax_forward_number);
			$this->fax_forward_number = str_replace("-", "", $this->fax_forward_number);
		}

		//set the forward prefix
		if (strripos($this->fax_forward_number, '$1') === false) {
			$this->forward_prefix = ''; //not found
		} else {
			$this->forward_prefix = $this->forward_prefix . $this->fax_forward_number . '#'; //found
		}

		//set the dialplan_uuid
		if (empty($this->dialplan_uuid)) {
			$this->dialplan_uuid = uuid();
		} else {
			//build previous details delete array
			$array['dialplan_details'][0]['dialplan_uuid'] = $this->dialplan_uuid;
			$array['dialplan_details'][0]['domain_uuid']   = $this->domain_uuid;

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

			//execute delete
			$this->database->app_name = 'fax';
			$this->database->app_uuid = '24108154-4ac3-1db6-1551-4731703a4440';
			$this->database->delete($array);
			unset($array);

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

		//set the fax name
		$fax_name = ($this->fax_name != '') ? $this->fax_name : format_phone($this->destination_number);

		//set the  last fax
		if (!empty($this->settings->get('fax', 'last_fax'))) {
			$last_fax = "last_fax=" . xml::sanitize($this->settings->get('fax', 'last_fax'));
		} else {
			$last_fax = "last_fax=\${caller_id_number}-\${strftime(%Y-%m-%d-%H-%M-%S)}";
		}

		//set the rx_fax
		$rxfax_data = $this->settings->get('switch', 'storage') . '/fax/' . $this->domain_name . '/' . xml::sanitize($this->fax_extension) . '/inbox/' . xml::sanitize($this->forward_prefix) . '${last_fax}.tif';

		//build the xml dialplan
		$dialplan_xml = "<extension name=\"" . xml::sanitize($fax_name) . "\" continue=\"false\" uuid=\"" . xml::sanitize($this->dialplan_uuid) . "\">\n";
		$dialplan_xml .= "	<condition field=\"destination_number\" expression=\"^" . xml::sanitize($this->destination_number) . "$\">\n";
		$dialplan_xml .= "		<action application=\"answer\" data=\"\"/>\n";
		$dialplan_xml .= "		<action application=\"set\" data=\"fax_uuid=" . xml::sanitize($this->fax_uuid) . "\"/>\n";
		$dialplan_xml .= "		<action application=\"set\" data=\"api_hangup_hook=lua app/fax/resources/scripts/hangup_rx.lua\"/>\n";
		foreach ($_SESSION['fax']['variable'] as $data) {
			if (substr($data, 0, 8) == "inbound:") {
				$dialplan_xml .= "		<action application=\"set\" data=\"" . xml::sanitize(substr($data, 8, strlen($data))) . "\"/>\n";
			} elseif (substr($data, 0, 9) == "outbound:") {
			} else {
				$dialplan_xml .= "		<action application=\"set\" data=\"" . xml::sanitize($data) . "\"/>\n";
			}
		}
		$dialplan_xml .= "		<action application=\"set\" data=\"" . $last_fax . "\"/>\n";
		$dialplan_xml .= "		<action application=\"rxfax\" data=\"$rxfax_data\"/>\n";
		$dialplan_xml .= "		<action application=\"hangup\" data=\"\"/>\n";
		$dialplan_xml .= "	</condition>\n";
		$dialplan_xml .= "</extension>\n";

		//build the dialplan array
		$dialplan["app_uuid"]             = "24108154-4ac3-1db6-1551-4731703a4440";
		$dialplan["domain_uuid"]          = $this->domain_uuid;
		$dialplan["dialplan_uuid"]        = $this->dialplan_uuid;
		$dialplan["dialplan_name"]        = ($this->fax_name != '') ? $this->fax_name : format_phone($this->destination_number);
		$dialplan["dialplan_number"]      = $this->fax_extension;
		$dialplan["dialplan_context"]     = $this->domain_name;
		$dialplan["dialplan_continue"]    = false;
		$dialplan["dialplan_xml"]         = $dialplan_xml;
		$dialplan["dialplan_order"]       = "40";
		$dialplan["dialplan_enabled"]     = true;
		$dialplan["dialplan_description"] = $this->fax_description;
		$dialplan_detail_order            = 10;

		//prepare the array
		$array['dialplans'][] = $dialplan;

		//add the dialplan permission
		$p = permissions::new();
		$p->add("dialplan_add", 'temp');
		$p->add("dialplan_detail_add", 'temp');
		$p->add("dialplan_edit", 'temp');
		$p->add("dialplan_detail_edit", 'temp');

		//save the dialplan
		$this->database->app_name = 'fax';
		$this->database->app_uuid = '24108154-4ac3-1db6-1551-4731703a4440';
		$this->database->save($array);
		//$message = $this->database->message;

		//remove the temporary permission
		$p->delete("dialplan_add", 'temp');
		$p->delete("dialplan_detail_add", 'temp');
		$p->delete("dialplan_edit", 'temp');
		$p->delete("dialplan_detail_edit", 'temp');

		//clear the cache
		$cache = new cache;
		$cache->delete("dialplan:" . $this->domain_name);

		//return the dialplan_uuid
		return $dialplan_response ?? null;

	}

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

		//set private variables
		$this->permission_prefix = 'fax_extension_';
		$this->list_page         = 'fax.php';
		$this->table             = 'fax';
		$this->uuid_prefix       = 'fax_';

		if (permission_exists($this->permission_prefix . 'delete')) {

			//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: ' . $this->list_page);
				exit;
			}

			//delete multiple records
			if (is_array($records) && @sizeof($records) != 0) {

				//filter out unchecked fax extensions, build where clause for below
				foreach ($records as $x => $record) {
					if (!empty($record['checked']) && $record['checked'] == 'true' && is_uuid($record['uuid'])) {
						$uuids[] = "'" . $record['uuid'] . "'";
					}
				}

				//get necessary fax details
				if (is_array($uuids) && @sizeof($uuids) != 0) {
					$sql                       = "select " . $this->uuid_prefix . "uuid as uuid, dialplan_uuid from v_" . $this->table . " ";
					$sql                       .= "where domain_uuid = :domain_uuid ";
					$sql                       .= "and " . $this->uuid_prefix . "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) {
							$faxes[$row['uuid']]['dialplan_uuid'] = $row['dialplan_uuid'];
						}
					}
					unset($sql, $parameters, $rows, $row);
				}

				//get necessary fax file details
				if (is_array($uuids) && @sizeof($uuids) != 0) {
					$sql                       = "select fax_file_uuid as uuid, fax_mode, fax_file_path, fax_file_type from v_fax_files ";
					$sql                       .= "where domain_uuid = :domain_uuid ";
					$sql                       .= "and " . $this->uuid_prefix . "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 $row) {
							if ($row['fax_mode'] == 'rx') {
								$fax_files[$row['uuid']]['folder'] = 'inbox';
							}
							if ($row['fax_mode'] == 'tx') {
								$fax_files[$row['uuid']]['folder'] = 'sent';
							}
							$fax_files[$row['uuid']]['path'] = $row['fax_file_path'];
							$fax_files[$row['uuid']]['type'] = $row['fax_file_type'];
						}
					}
					unset($sql, $parameters, $rows, $row);
				}

				//delete fax file(s)
				if (!empty($fax_files) && is_array($fax_files) && @sizeof($fax_files) != 0) {
					foreach ($fax_files as $fax_file_uuid => $fax_file) {
						if (substr_count($fax_file['path'], '/temp/') > 0) {
							$fax_file['path'] = str_replace('/temp/', '/' . $fax_file['type'] . '/', $fax_file['path']);
						}
						if (file_exists($fax_file['path'])) {
							@unlink($fax_file['path']);
						}
						if ($fax_file['type'] == 'tif') {
							$fax_file['path'] = str_replace('.tif', '.pdf', $fax_file['path']);
							if (file_exists($fax_file['path'])) {
								@unlink($fax_file['path']);
							}
						} elseif ($fax_file['type'] == 'pdf') {
							$fax_file['path'] = str_replace('.pdf', '.tif', $fax_file['path']);
							if (file_exists($fax_file['path'])) {
								@unlink($fax_file['path']);
							}
						}
					}
				}

				//build the delete array
				$x = 0;
				if (!empty($faxes) && is_array($faxes) && @sizeof($faxes) != 0) {
					foreach ($faxes as $fax_uuid => $fax) {
						$array[$this->table][$x][$this->uuid_prefix . 'uuid'] = $fax_uuid;
						$array[$this->table][$x]['domain_uuid']               = $this->domain_uuid;
						$array['fax_users'][$x][$this->uuid_prefix . 'uuid']  = $fax_uuid;
						$array['fax_users'][$x]['domain_uuid']                = $this->domain_uuid;
						$array['fax_files'][$x][$this->uuid_prefix . 'uuid']  = $fax_uuid;
						$array['fax_files'][$x]['domain_uuid']                = $this->domain_uuid;
						$array['fax_logs'][$x][$this->uuid_prefix . 'uuid']   = $fax_uuid;
						$array['fax_logs'][$x]['domain_uuid']                 = $this->domain_uuid;
						$array['dialplans'][$x]['dialplan_uuid']              = $fax['dialplan_uuid'];
						$array['dialplans'][$x]['domain_uuid']                = $this->domain_uuid;
						$array['dialplan_details'][$x]['dialplan_uuid']       = $fax['dialplan_uuid'];
						$array['dialplan_details'][$x]['domain_uuid']         = $this->domain_uuid;
						$x++;
					}
				}

				//delete the checked rows
				if (!empty($array) && is_array($array) && @sizeof($array) != 0) {

					//grant temporary permissions
					$p = permissions::new();
					$p->add('fax_delete', 'temp');
					$p->add('fax_user_delete', 'temp');
					$p->add('fax_file_delete', 'temp');
					$p->add('fax_log_delete', 'temp');
					$p->add('dialplan_delete', 'temp');
					$p->add('dialplan_detail_delete', 'temp');

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

					//revoke temporary permissions
					$p->delete('fax_delete', 'temp');
					$p->delete('fax_user_delete', 'temp');
					$p->delete('fax_file_delete', 'temp');
					$p->delete('fax_log_delete', 'temp');
					$p->delete('dialplan_delete', 'temp');
					$p->delete('dialplan_detail_delete', 'temp');

					//apply settings reminder
					$_SESSION["reload_xml"] = true;

					//clear the cache
					$cache = new cache;
					$cache->delete("dialplan:" . $this->domain_name);

					//clear the destinations session array
					if (isset($_SESSION['destinations']['array'])) {
						unset($_SESSION['destinations']['array']);
					}

					//set message
					message::add($text['message-delete']);
				}
				unset($records);
			}
		}
	}

	/**
	 * Deletes multiple fax files.
	 *
	 * @param array $records An array of records to delete, where each record is an associative array containing the 'checked' and 'uuid' keys.
	 *
	 * @return void
	 */
	public function delete_files($records) {

		//set private variables
		$this->permission_prefix = 'fax_file_';
		$this->list_page         = 'fax_files.php?id=' . urlencode($this->fax_uuid) . '&box=' . urlencode($this->box);
		$this->table             = 'fax_files';
		$this->uuid_prefix       = 'fax_file_';

		if (permission_exists($this->permission_prefix . 'delete')) {

			//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: ' . $this->list_page);
				exit;
			}

			//delete multiple records
			if (is_array($records) && @sizeof($records) != 0) {

				//filter out unchecked fax files, build where clause for below
				foreach ($records as $x => $record) {
					if (!empty($record['checked']) && $record['checked'] == 'true' && is_uuid($record['uuid'])) {
						$uuids[] = "'" . $record['uuid'] . "'";
					}
				}

				//get necessary fax file details
				if (is_array($uuids) && @sizeof($uuids) != 0) {
					$sql                       = "select " . $this->uuid_prefix . "uuid as uuid, fax_mode, fax_file_path, fax_file_type from v_" . $this->table . " ";
					$sql                       .= "where domain_uuid = :domain_uuid ";
					$sql                       .= "and " . $this->uuid_prefix . "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 $row) {
							if ($row['fax_mode'] == 'rx') {
								$fax_files[$row['uuid']]['folder'] = 'inbox';
							}
							if ($row['fax_mode'] == 'tx') {
								$fax_files[$row['uuid']]['folder'] = 'sent';
							}
							$fax_files[$row['uuid']]['path'] = $row['fax_file_path'];
							$fax_files[$row['uuid']]['type'] = $row['fax_file_type'];
						}
					}
					unset($sql, $parameters, $rows, $row);
				}

				//delete fax file(s)
				if (is_array($fax_files) && @sizeof($fax_files) != 0) {
					foreach ($fax_files as $fax_file_uuid => $fax_file) {
						if (substr_count($fax_file['path'], '/temp/') > 0) {
							$fax_file['path'] = str_replace('/temp/', '/' . $fax_file['type'] . '/', $fax_file['path']);
						}
						if (file_exists($fax_file['path'])) {
							@unlink($fax_file['path']);
						}
						if ($fax_file['type'] == 'tif') {
							$fax_file['path'] = str_replace('.tif', '.pdf', $fax_file['path']);
							if (file_exists($fax_file['path'])) {
								@unlink($fax_file['path']);
							}
						} elseif ($fax_file['type'] == 'pdf') {
							$fax_file['path'] = str_replace('.pdf', '.tif', $fax_file['path']);
							if (file_exists($fax_file['path'])) {
								@unlink($fax_file['path']);
							}
						}
					}
				}

				//build the delete array
				$x = 0;
				foreach ($fax_files as $fax_file_uuid => $fax_file) {
					$array[$this->table][$x][$this->uuid_prefix . 'uuid'] = $fax_file_uuid;
					$array[$this->table][$x]['domain_uuid']               = $this->domain_uuid;
					$x++;
				}

				//delete the checked rows
				if (is_array($array) && @sizeof($array) != 0) {

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

					//set message
					message::add($text['message-delete']);
				}
				unset($records);
			}
		}
	}

	/**
	 * Deletes multiple fax log records based on user input.
	 *
	 * @param array $records  An array of record data, where each record is an associative array containing
	 *                        information about the log entry to delete. Each array should have a 'checked'
	 *                        key with a value of either true or false indicating whether the log entry
	 *                        should be deleted, and a 'uuid' key containing the UUID of the log entry.
	 *
	 * @return void No return value; method only deletes records if permission is granted.
	 */
	public function delete_logs($records) {

		//set private variables
		$this->permission_prefix = 'fax_log_';
		$this->list_page         = 'fax_logs.php?id=' . urlencode($this->fax_uuid);
		$this->table             = 'fax_logs';
		$this->uuid_prefix       = 'fax_log_';

		if (permission_exists($this->permission_prefix . 'delete')) {

			//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: ' . $this->list_page);
				exit;
			}

			//delete multiple records
			if (is_array($records) && @sizeof($records) != 0) {

				//filter out unchecked fax logs, build the delete array
				foreach ($records as $x => $record) {
					if (!empty($record['checked']) && $record['checked'] == 'true' && is_uuid($record['uuid'])) {
						$array[$this->table][$x][$this->uuid_prefix . 'uuid'] = $record['uuid'];
						$array[$this->table][$x]['domain_uuid']               = $this->domain_uuid;
					}
				}

				//delete the checked rows
				if (is_array($array) && @sizeof($array) != 0) {

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

					//set message
					message::add($text['message-delete']);
				}
				unset($records);
			}
		}
	}

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

		//set private variables
		$this->permission_prefix = 'fax_extension_';
		$this->list_page         = 'fax.php';
		$this->table             = 'fax';
		$this->uuid_prefix       = 'fax_';

		if (permission_exists($this->permission_prefix . 'copy')) {

			//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: ' . $this->list_page);
				exit;
			}

			//copy the checked records
			if (is_array($records) && @sizeof($records) != 0) {

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

				//create insert array from existing data
				if (is_array($uuids) && @sizeof($uuids) != 0) {

					//primary table
					$sql                       = "select * from v_" . $this->table . " ";
					$sql                       .= "where (domain_uuid = :domain_uuid or domain_uuid is null) ";
					$sql                       .= "and " . $this->uuid_prefix . "uuid in (" . implode(', ', $uuids) . ") ";
					$parameters['domain_uuid'] = $this->domain_uuid;
					$rows                      = $this->database->select($sql, $parameters, 'all');
					if (is_array($rows) && @sizeof($rows) != 0) {
						$y = 0;
						foreach ($rows as $x => $row) {
							$new_fax_uuid      = uuid();
							$new_dialplan_uuid = uuid();

							//convert boolean values to a string
							foreach ($row as $key => $value) {
								if (gettype($value) == 'boolean') {
									$value     = $value ? 'true' : 'false';
									$row[$key] = $value;
								}
							}

							//copy data
							$array[$this->table][$x] = $row;

							//overwrite
							$array[$this->table][$x][$this->uuid_prefix . 'uuid'] = $new_fax_uuid;
							$array[$this->table][$x]['dialplan_uuid']             = $new_dialplan_uuid;
							if ($row['fax_forward_number'] == '') {
								unset($array[$this->table][$x]['fax_forward_number']);
							}
							$array[$this->table][$x]['fax_description'] = trim($row['fax_description'] . ' (' . $text['label-copy'] . ')');

							//fax users sub table
							$sql_2                       = "select e.* from v_fax_users as e, v_users as u ";
							$sql_2                       .= "where e.user_uuid = u.user_uuid  ";
							$sql_2                       .= "and e.domain_uuid = :domain_uuid ";
							$sql_2                       .= "and e.fax_uuid = :fax_uuid ";
							$parameters_2['domain_uuid'] = $this->domain_uuid;
							$parameters_2['fax_uuid']    = $row['fax_uuid'];
							$rows_2                      = $this->database->select($sql_2, $parameters_2, 'all');
							if (is_array($rows_2) && @sizeof($rows_2) != 0) {
								foreach ($rows_2 as $row_2) {

									//convert boolean values to a string
									foreach ($row_2 as $key => $value) {
										if (gettype($value) == 'boolean') {
											$value       = $value ? 'true' : 'false';
											$row_2[$key] = $value;
										}
									}

									//copy data
									$array['fax_users'][$y] = $row_2;

									//overwrite
									$array['fax_users'][$y]['fax_user_uuid'] = uuid();
									$array['fax_users'][$y]['fax_uuid']      = $new_fax_uuid;

									//increment
									$y++;

								}
							}
							unset($sql_2, $parameters_2, $rows_2, $row_2);

							//fax dialplan record
							$sql_3                         = "select * from v_dialplans where dialplan_uuid = :dialplan_uuid";
							$parameters_3['dialplan_uuid'] = $row['dialplan_uuid'];
							$dialplan                      = $this->database->select($sql_3, $parameters_3, 'row');
							if (is_array($dialplan) && @sizeof($dialplan) != 0) {

								//convert boolean values to a string
								foreach ($dialplan as $key => $value) {
									if (gettype($value) == 'boolean') {
										$value          = $value ? 'true' : 'false';
										$dialplan[$key] = $value;
									}
								}

								//copy data
								$array['dialplans'][$x] = $dialplan;

								//overwrite
								$array['dialplans'][$x]['dialplan_uuid']        = $new_dialplan_uuid;
								$dialplan_xml                                   = $dialplan['dialplan_xml'];
								$dialplan_xml                                   = str_replace($row['fax_uuid'], $new_fax_uuid, $dialplan_xml); //replace source fax_uuid with new
								$dialplan_xml                                   = str_replace($dialplan['dialplan_uuid'], $new_dialplan_uuid, $dialplan_xml); //replace source dialplan_uuid with new
								$array['dialplans'][$x]['dialplan_xml']         = $dialplan_xml;
								$array['dialplans'][$x]['dialplan_description'] = trim($dialplan['dialplan_description'] . ' (' . $text['label-copy'] . ')');

							}
							unset($sql_3, $parameters_3, $dialplan);

						}
					}
					unset($sql, $parameters, $rows, $row);
				}

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

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

					//save the array

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

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

					//apply settings reminder
					$_SESSION["reload_xml"] = true;

					//clear the cache
					$cache = new cache;
					$cache->delete("dialplan:" . $this->domain_name);

					//set message
					message::add($text['message-copy']);

				}
				unset($records);
			}

		}
	} //method

	/**
	 * Toggles the read state of multiple fax file records based on user input.
	 *
	 * @param array $records An array of record data, where each record is an associative array containing information about the log entry to toggle.
	 *                       Each array should have a 'checked' key with a value of either true or false indicating whether the log entry
	 *                       should be toggled, and a 'uuid' key containing the UUID of the log entry.
	 *
	 * @return int The number of fax files toggled (0 if none were toggled).
	 */
	public function fax_file_toggle($records) {

		if (permission_exists('fax_file_edit')) {

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

			//validate the token
			if (empty($this->download) || $this->download == false) {
				$token = new token;
				if (!$token->validate($_SERVER['PHP_SELF'])) {
					message::add($text['message-invalid_token'], 'negative');
					header('Location: fax_files.php?order_by=' . urlencode($this->order_by) . '&order=' . urlencode($this->order) . '&id=' . urlencode($this->fax_uuid) . '&box=' . urlencode($this->box));
					exit;
				}
			}

			//toggle multiple records
			if (is_array($records) && @sizeof($records) != 0) {

				//filter out unchecked fax files, build the toggle array
				$fax_files_toggled = 0;
				foreach ($records as $x => $record) {
					if (!empty($record['checked']) && $record['checked'] == 'true' && is_uuid($record['uuid'])) {
						//get current read state
						$sql                         = "select read_date from v_fax_files where fax_file_uuid = :fax_file_uuid";
						$parameters['fax_file_uuid'] = $record['uuid'];
						$read_date                   = $this->database->select($sql, $parameters, 'column');
						unset($sql, $parameters);

						//toggle read state
						$array['fax_files'][$x]['fax_file_uuid'] = $record['uuid'];
						$array['fax_files'][$x]['domain_uuid']   = $this->domain_uuid;
						$array['fax_files'][$x]['read_date']     = empty($read_date) ? 'now()' : null;
						$fax_files_toggled++;
					}
				}
				unset($records);

				//update the checked rows
				if (!empty($array) && is_array($array)) {

					//execute save

					$this->database->save($array, false);
					unset($array);

					//return toggled count
					return $fax_files_toggled;

				}

			}

			//return none
			return 0;
		}

	}

} //class

/*
$o = new fax;
$c->domain_uuid = "";
$c->dialplan_uuid = "";
$c->fax_name = "";
$c->fax_extension = $fax_extension;
$c->fax_forward_number = $fax_forward_number;
$c->destination_number = $fax_destination_number;
$c->fax_description = $fax_description;
$c->dialplan();
*/