<?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 call_flows class
class call_flows {

	/**
	 * declare public variables
	 */
	public $toggle_field;

	/**
	 * declare constant variables
	 */
	const app_name = 'call_flows';
	const app_uuid = 'b1b70f85-6b42-429b-8c5a-60c8b02b7d14';

	/**
	 * 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 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 $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
	 */
	private $domain_name;

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

	/**
	 * Constructor for the class.
	 *
	 * This method initializes the object with setting_array and session data.
	 *
	 * @param array $setting_array An optional array of settings to override default values. Defaults to [].
	 */
	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();

		//assign private variables
		$this->permission_prefix = 'call_flow_';
		$this->list_page         = 'call_flows.php';
		$this->table             = 'call_flows';
		$this->uuid_prefix       = 'call_flow_';
		$this->toggle_values     = ['true', 'false'];
	}

	/**
	 * Deletes one or multiple records from the access controls table.
	 *
	 * @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) {
		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 call flows, build where clause for below
				foreach ($records as $x => $record) {
					if ($record['checked'] == 'true' && is_uuid($record['uuid'])) {
						$uuids[] = "'" . $record['uuid'] . "'";
					}
				}

				//get necessary call flow details
				if (is_array($uuids) && @sizeof($uuids) != 0) {
					$sql                       = "select " . $this->uuid_prefix . "uuid as uuid, dialplan_uuid, call_flow_context 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) {
							$call_flows[$row['uuid']]['dialplan_uuid'] = $row['dialplan_uuid'];
							$call_flow_contexts[]                      = $row['call_flow_context'];
						}
					}
					unset($sql, $parameters, $rows, $row);
				}

				//build the delete array
				$x = 0;
				foreach ($call_flows as $call_flow_uuid => $call_flow) {
					$array[$this->table][$x][$this->uuid_prefix . 'uuid'] = $call_flow_uuid;
					$array[$this->table][$x]['domain_uuid']               = $this->domain_uuid;
					$array['dialplans'][$x]['dialplan_uuid']              = $call_flow['dialplan_uuid'];
					$array['dialplans'][$x]['domain_uuid']                = $this->domain_uuid;
					$array['dialplan_details'][$x]['dialplan_uuid']       = $call_flow['dialplan_uuid'];
					$array['dialplan_details'][$x]['domain_uuid']         = $this->domain_uuid;
					$x++;
				}

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

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

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

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

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

					//clear the cache
					if (is_array($call_flow_contexts) && @sizeof($call_flow_contexts) != 0) {
						$call_flow_contexts = array_unique($call_flow_contexts);
						$cache              = new cache;
						foreach ($call_flow_contexts as $call_flow_context) {
							$cache->delete("dialplan:" . $call_flow_context);
						}
					}

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

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

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

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

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

				if (!empty($uuids)) {
					$sql                       = "select " . $this->uuid_prefix . "uuid as uuid, " . $this->toggle_field . " as toggle, ";
					$sql                       .= "dialplan_uuid, call_flow_feature_code, call_flow_context 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, $parameters, 'all');
					if (!empty($rows)) {
						foreach ($rows as $row) {
							$call_flows[$row['uuid']]['state']                  = $row['toggle'];
							$call_flows[$row['uuid']]['dialplan_uuid']          = $row['dialplan_uuid'];
							$call_flows[$row['uuid']]['call_flow_feature_code'] = $row['call_flow_feature_code'];
							$call_flow_contexts[]                               = $row['call_flow_context'];
						}
					}
					unset($sql, $parameters, $rows, $row);
				}

				//build update array
				$x = 0;
				foreach ($call_flows as $uuid => $call_flow) {
					$array[$this->table][$x][$this->uuid_prefix . 'uuid'] = $uuid;
					$array[$this->table][$x][$this->toggle_field]         = $call_flow['state'] == $this->toggle_values[0] ? $this->toggle_values[1] : $this->toggle_values[0];
					if ($this->toggle_field == 'call_flow_enabled') {
						$array['dialplans'][$x]['dialplan_uuid']    = $call_flow['dialplan_uuid'];
						$array['dialplans'][$x]['dialplan_enabled'] = $call_flow['state'] == $this->toggle_values[0] ? $this->toggle_values[1] : $this->toggle_values[0];
					}
					$x++;
				}

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

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

					//save the array

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

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

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

					//clear the cache
					if (is_array($call_flow_contexts) && @sizeof($call_flow_contexts) != 0) {
						$call_flow_contexts = array_unique($call_flow_contexts);
						$cache              = new cache;
						foreach ($call_flow_contexts as $call_flow_context) {
							$cache->delete("dialplan:" . $call_flow_context);
						}
					}

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

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

				//toggle the presence
				if ($this->toggle_field != 'call_flow_enabled') {
					foreach ($call_flows as $uuid => $row) {
						//prepare the event
						$cmd = "sendevent PRESENCE_IN\n";
						$cmd .= "proto: flow\n";
						$cmd .= "login: " . $row['call_flow_feature_code'] . "@" . $this->domain_name . "\n";
						$cmd .= "from: " . $row['call_flow_feature_code'] . "@" . $this->domain_name . "\n";
						$cmd .= "status: Active (1 waiting)\n";
						$cmd .= "rpid: unknown\n";
						$cmd .= "event_type: presence\n";
						$cmd .= "alt_event_type: dialog\n";
						$cmd .= "event_count: 1\n";
						$cmd .= "unique-id: " . uuid() . "\n";
						$cmd .= "Presence-Call-Direction: outbound\n";
						if ($call_flow['state'] == 'true') {
							$cmd .= "answer-state: confirmed\n";
						} else {
							$cmd .= "answer-state: terminated\n";
						}

						//send the event
						$switch_result = event_socket::command($cmd);
					}
				}
				unset($call_flows);

			}

		}
	}

	/**
	 * 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) {
		if (permission_exists($this->permission_prefix . 'add')) {

			//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 => $record) {
					if ($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($rows) != 0) {
						foreach ($rows as $x => $row) {
							$new_call_flow_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_call_flow_uuid;
							$array[$this->table][$x]['dialplan_uuid']             = $new_dialplan_uuid;
							$array[$this->table][$x]['call_flow_description']     = trim($row['call_flow_description'] . ' (' . $text['label-copy'] . ')');

							//call flow dialplan record
							$sql_2                         = "select * from v_dialplans where dialplan_uuid = :dialplan_uuid";
							$parameters_2['dialplan_uuid'] = $row['dialplan_uuid'];
							$dialplan                      = $this->database->select($sql_2, $parameters_2, 'row');
							if (is_array($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['call_flow_uuid'], $new_call_flow_uuid, $dialplan_xml); //replace source call_flow_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_2, $parameters_2, $dialplan);

							//create call flow context array
							$call_flow_contexts = $row['call_flow_context'];
						}
					}
					unset($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('dialplan_add', 'temp');

					//save the array

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

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

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

					//clear the cache
					if (is_array($call_flow_contexts) && @sizeof($call_flow_contexts) != 0) {
						$call_flow_contexts = array_unique($call_flow_contexts);
						$cache              = new cache;
						foreach ($call_flow_contexts as $call_flow_context) {
							$cache->delete("dialplan:" . $call_flow_context);
						}
					}

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

				}
				unset($records);
			}

		}
	} //method

} //class