<?php

/**
 * call block class
 */
class call_block {

	/**
	 * declare constant variables
	 */
	const app_name = 'call_block';
	const app_uuid = '9ed63276-e085-4897-839c-4f2e36d92d6c';

	/**
	 * 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_field;
	private $toggle_values;

	/**
	 * declare public variables
	 */
	public $call_block_direction;
	public $extension_uuid;
	public $call_block_app;
	public $call_block_data;

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

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

	/**
	 * 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) {
		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, 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 call block details
				if (is_array($uuids) && @sizeof($uuids) != 0) {
					$sql = "select " . $this->uuid_prefix . "uuid as uuid, call_block_number from v_" . $this->table . " ";
					$sql .= "where ( ";
					$sql .= "	domain_uuid = :domain_uuid ";
					if (permission_exists('call_block_domain')) {
						$sql .= " or domain_uuid is null ";
					}
					$sql                       .= ") ";
					$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) {
							$call_block_numbers[$row['uuid']] = $row['call_block_number'];
						}
					}
					unset($sql, $parameters, $rows, $row);
				}

				//build the delete array
				$x = 0;
				foreach ($call_block_numbers as $call_block_uuid => $call_block_number) {
					$array[$this->table][$x][$this->uuid_prefix . 'uuid'] = $call_block_uuid;
					if (!permission_exists('call_block_domain')) {
						$array[$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);

					//clear the cache
					$cache = new cache;
					foreach ($call_block_numbers as $call_block_number) {
						$cache->delete("app:call_block:" . $this->domain_name . ":" . $call_block_number);
					}

					//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 => $record) {
					if (!empty($record['checked']) && $record['checked'] == 'true' && is_uuid($record['uuid'])) {
						$uuids[] = "'" . $record['uuid'] . "'";
					}
				}
				if (is_array($uuids) && @sizeof($uuids) != 0) {
					$sql                       = "select " . $this->uuid_prefix . "uuid as uuid, " . $this->toggle_field . " as toggle, call_block_number 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 $row) {
							$states[$row['uuid']] = $row['toggle'];
							$call_block_numbers[] = $row['call_block_number'];
						}
					}
					unset($sql, $parameters, $rows, $row);
				}

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

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

					//save the array

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

					//clear the cache
					$cache = new cache;
					foreach ($call_block_numbers as $call_block_number) {
						$cache->delete("app:call_block:" . $this->domain_name . ":" . $call_block_number);
					}

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

		}
	}

	/**
	 * 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 => $record) {
					if (!empty($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) {
					$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) {

							//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'] = uuid();
							$array[$this->table][$x]['call_block_description']    = trim($row['call_block_description'] . ' (' . $text['label-copy'] . ')');

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

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

					//save the array

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

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

				}
				unset($records);
			}

		}
	}

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

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

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

				//get the caller id info from call detail records
				if (is_array($uuids) && @sizeof($uuids) != 0) {
					$sql  = "select caller_id_name, caller_id_number, caller_destination from v_xml_cdr ";
					$sql  .= "where xml_cdr_uuid in (" . implode(', ', $uuids) . ") ";
					$rows = $this->database->select($sql, $parameters ?? null, 'all');
					unset($sql, $parameters);
				}

				//get the caller id info from call detail records
				if (is_uuid($this->domain_uuid)) {
					//get the destination country code
					$sql                       = "select distinct(destination_prefix), ";
					$sql                       .= "(select count(destination_prefix) from v_destinations where domain_uuid = :domain_uuid and destination_prefix = d.destination_prefix) as count ";
					$sql                       .= "from v_destinations as d ";
					$sql                       .= "where domain_uuid = :domain_uuid ";
					$sql                       .= "and destination_prefix <> '' ";
					$sql                       .= "and destination_enabled = true ";
					$sql                       .= "order by count desc limit 1; ";
					$parameters['domain_uuid'] = $this->domain_uuid;
					$destination_country_code  = $this->database->select($sql, $parameters ?? null, 'column');
					unset($sql, $parameters);

					//use the the destination country code to set the country code
					if (!empty($destination_country_code)) {
						$destination_country_code = trim($destination_country_code, "+ ");
						$country_code             = $destination_country_code;
					}
				}

				//get the users that are assigned to the extension
				if (!permission_exists('call_block_extension')) {
					$sql                     = "select extension_uuid from v_extension_users ";
					$sql                     .= "where user_uuid = :user_uuid ";
					$parameters['user_uuid'] = $this->user_uuid;
					$user_extensions         = $this->database->select($sql, $parameters ?? null, 'all');
					unset($sql, $parameters);
				}

				//get the country code from default settings
				if ($this->settings->get('domain', 'country_code', null) !== null) {
					$country_code = $this->settings->get('domain', 'country_code');
				}

				//loop through records
				if (is_array($rows) && @sizeof($rows) != 0) {
					foreach ($rows as $x => $row) {

						//remove e.164 and country code
						if (substr($row["caller_id_number"], 0, 1) == "+") {
							//format e.164
							$call_block_number = str_replace("+" . trim($country_code), "", trim($row["caller_id_number"]));
						} elseif (!empty($row["caller_id_number"])) {
							//remove the country code if its the first in the string
							$call_block_number = ltrim(trim($row["caller_id_number"]), $country_code ?? '');
						} else {
							$call_block_number = '';
						}

						//build insert array
						if (permission_exists('call_block_extension')) {
							$array['call_block'][$x]['call_block_uuid']      = uuid();
							$array['call_block'][$x]['domain_uuid']          = $this->domain_uuid;
							$array['call_block'][$x]['call_block_direction'] = $this->call_block_direction;
							if (is_uuid($this->extension_uuid)) {
								$array['call_block'][$x]['extension_uuid'] = $this->extension_uuid;
							}
							if ($this->call_block_direction == 'inbound') {
								$array['call_block'][$x]['call_block_name']         = '';
								$array['call_block'][$x]['call_block_country_code'] = trim($country_code ?? '');
								$array['call_block'][$x]['call_block_number']       = $call_block_number;
								$array['call_block'][$x]['call_block_description']  = trim($row["caller_id_name"]);
							}
							if ($this->call_block_direction == 'outbound') {
								$array['call_block'][$x]['call_block_number'] = trim($row["caller_destination"]);
							}
							$array['call_block'][$x]['call_block_count']   = 0;
							$array['call_block'][$x]['call_block_app']     = $this->call_block_app;
							$array['call_block'][$x]['call_block_data']    = $this->call_block_data;
							$array['call_block'][$x]['call_block_enabled'] = true;
							$array['call_block'][$x]['date_added']         = time();
							$x++;
						} else {
							if (is_array($user_extensions)) {
								foreach ($user_extensions as $field) {
									if (is_uuid($field['extension_uuid'])) {
										$array['call_block'][$x]['call_block_uuid']      = uuid();
										$array['call_block'][$x]['domain_uuid']          = $this->domain_uuid;
										$array['call_block'][$x]['call_block_direction'] = $this->call_block_direction;
										$array['call_block'][$x]['extension_uuid']       = $field['extension_uuid'];
										if ($this->call_block_direction == 'inbound') {
											$array['call_block'][$x]['call_block_name']         = '';
											$array['call_block'][$x]['call_block_country_code'] = trim($country_code ?? '');
											$array['call_block'][$x]['call_block_number']       = $call_block_number;
											$array['call_block'][$x]['call_block_description']  = trim($row["caller_id_name"]);
										}
										if ($this->call_block_direction == 'outbound') {
											$array['call_block'][$x]['call_block_number'] = trim($row["caller_destination"]);
										}
										$array['call_block'][$x]['call_block_count']   = 0;
										$array['call_block'][$x]['call_block_app']     = $this->call_block_app;
										$array['call_block'][$x]['call_block_data']    = $this->call_block_data;
										$array['call_block'][$x]['call_block_enabled'] = true;
										$array['call_block'][$x]['date_added']         = time();
										$x++;
									}
								}
							}
						}

					}
				}

				//add records
				if (is_array($array) && @sizeof($array) != 0) {

					//ensure call block is enabled in the dialplan (build update array)
					$sql                       = "select dialplan_uuid from v_dialplans ";
					$sql                       .= "where domain_uuid = :domain_uuid ";
					$sql                       .= "and app_uuid = '" . self::app_uuid . "' ";
					$sql                       .= "and dialplan_enabled <> true ";
					$parameters['domain_uuid'] = $this->domain_uuid;
					$rows                      = $this->database->select($sql, $parameters);
					if (is_array($rows) && @sizeof($rows) != 0) {
						foreach ($rows as $x => $row) {
							$array['dialplans'][$x]['dialplan_uuid']    = $row['dialplan_uuid'];
							$array['dialplans'][$x]['dialplan_enabled'] = true;
						}
					}
					unset($rows, $parameters);

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

					//save the array

					$this->database->save($array);
					$response = $this->database->message;
					unset($array);

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

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

				}

			}

		}
	} //method

} //class