<?php
/**
 * Central plugin bootstrap/orchestrator.
 *
 * Wires up admin, integrations, and i18n once all plugins have loaded.
 *
 * @package DeveloperSD_Logo_Slider
 */

defined( 'ABSPATH' ) || exit;

/**
 * Class DeveloperSD_LS_Plugin
 */
final class DeveloperSD_LS_Plugin {

	/**
	 * Singleton instance.
	 *
	 * @var DeveloperSD_LS_Plugin|null
	 */
	protected static $instance = null;

	/**
	 * Get (and lazily create) the singleton instance.
	 *
	 * @return DeveloperSD_LS_Plugin
	 */
	public static function instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}

		return self::$instance;
	}

	/**
	 * Constructor. Private: use ::instance().
	 */
	private function __construct() {
		// WordPress.org automatically loads translations for plugins hosted in
		// the directory, so no manual load_plugin_textdomain() call is needed.
		$this->init_admin();
		$this->init_integrations();
	}

	/**
	 * Initialize admin-only functionality.
	 */
	protected function init_admin() {
		if ( is_admin() ) {
			new DeveloperSD_LS_Admin();
		}
	}

	/**
	 * Load optional third-party builder integrations only when the builder
	 * plugin they target is actually active.
	 */
	protected function init_integrations() {
		if ( $this->integration_enabled( 'elementor' ) && ( did_action( 'elementor/loaded' ) || class_exists( '\Elementor\Plugin' ) ) ) {
			require_once DEVELOPERSD_LS_PATH . 'includes/integrations/class-elementor.php';
			new DeveloperSD_LS_Elementor_Integration();
		}

		if ( $this->integration_enabled( 'divi' ) && ( function_exists( 'et_setup_theme' ) || class_exists( 'ET_Builder_Module' ) || defined( 'ET_BUILDER_VERSION' ) ) ) {
			require_once DEVELOPERSD_LS_PATH . 'includes/integrations/class-divi.php';
			new DeveloperSD_LS_Divi_Integration();
		}
	}

	/**
	 * Whether a given builder integration is enabled in global settings.
	 *
	 * @param string $key 'elementor' or 'divi'.
	 * @return bool
	 */
	protected function integration_enabled( $key ) {
		$settings = get_option( 'developersd_logo_slider_settings', array() );
		$settings = is_array( $settings ) ? $settings : array();
		$field    = 'enable_' . $key;

		return ! isset( $settings[ $field ] ) || DeveloperSD_LS_Security::sanitize_bool( $settings[ $field ] );
	}

	/**
	 * Default global plugin settings (Settings screen).
	 *
	 * @return array
	 */
	public static function default_settings() {
		return array(
			'default_slides_desktop' => 5,
			'default_slides_tablet'  => 3,
			'default_slides_mobile'  => 2,
			'breakpoint_desktop'     => 1200,
			'breakpoint_tablet'      => 768,
			'breakpoint_mobile'      => 480,
			'lazy_load'              => true,
			'enable_elementor'       => true,
			'enable_divi'            => true,
			'debug_mode'             => false,
			'delete_data_on_uninstall' => false,
		);
	}

	/**
	 * Prevent cloning of the singleton.
	 */
	private function __clone() {}

	/**
	 * Prevent unserializing of the singleton.
	 */
	public function __wakeup() {
		throw new \Exception( 'Cannot unserialize a singleton.' );
	}
}