<?php
/**
 * Name:    Dev4Press\v55\Core\Cache\Transient
 * Version: v5.5
 * Author:  Milan Petrovic
 * Email:   support@dev4press.com
 * Website: https://www.dev4press.com/
 *
 * @package Dev4PressLibrary
 *
 * == Copyright ==
 * Copyright 2008 - 2026 Milan Petrovic (email: support@dev4press.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>
 */

namespace Dev4Press\v55\Core\Cache;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

abstract class Transient {
	public string $store = 'd4plib';

	protected $expiration = DAY_IN_SECONDS;
	protected array $elements = array();

	protected function __construct() {
	}

	public static function i() : static {
		static $instance = array();

		if ( ! isset( $instance[ static::class ] ) ) {
			$instance[ static::class ] = new static();
		}

		return $instance[ static::class ];
	}

	protected function _key( $name, $args = array() ) : string {
		$key = $name;

		if ( ! empty( $args ) ) {
			$key .= '-' . md5( wp_json_encode( $args ) );
		}

		return $this->store . '-' . $key;
	}

	protected function expiration( $name ) {
		return $this->elements[ $name ]['expiration'] ?? $this->expiration;
	}

	public function get( string $name, array $args = array(), bool $force_current = false ) {
		$key   = $this->_key( $name, $args );
		$value = $force_current ? false : get_transient( $key );

		if ( ! $value ) {
			$value = $this->call( $name, $args );

			set_transient( $key, $value, $this->expiration( $name ) );
		}

		return $value;
	}

	abstract protected function call( $name, $args = array() ) : array;
}
