<?php
/**
 * Main plugin class.
 *
 * @package StreamSera
 */

namespace StreamSera;

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

/**
 * Bootstraps every module.
 */
final class Plugin {

	/**
	 * Singleton instance.
	 *
	 * @var Plugin|null
	 */
	private static $instance = null;

	/**
	 * Get the instance.
	 *
	 * @return Plugin
	 */
	public static function instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Register hooks for all modules.
	 */
	public function register() {
		Installation::maybe_upgrade();

		add_filter( 'cron_schedules', array( 'StreamSera\\Jobs\\Scheduler', 'cron_schedules' ) ); // phpcs:ignore WordPress.WP.CronInterval.ChangeDetected -- adds a 60s interval used only by the metadata poll (see Scheduler::cron_schedules).

		( new PostTypes\Station() )->register();
		( new PostTypes\Player() )->register();
		( new Jobs\Metadata_Poll() )->register();
		( new Api\Routes() )->register();
		( new Frontend\Assets() )->register();
		( new Frontend\Shortcode() )->register();
		( new Frontend\Block() )->register();
		( new Frontend\Preview() )->register();

		if ( is_admin() ) {
			( new Admin\Menu() )->register();
		}

		// Feature modules: every class in includes/Modules/ with a register() method boots here.
		// Add-ons extend the list with `streamsera_modules`.
		foreach ( $this->modules() as $module ) {
			if ( class_exists( $module ) && method_exists( $module, 'register' ) ) {
				( new $module() )->register();
			}
		}

		/**
		 * Fires once StreamSera has registered its modules. Add-ons hook in here.
		 *
		 * @param Plugin $plugin Plugin instance.
		 */
		do_action( 'streamsera_loaded', $this );
	}

	/**
	 * Discover feature modules.
	 *
	 * @return string[] Fully qualified class names.
	 */
	public function modules() {
		$modules = array();
		foreach ( (array) glob( STREAMSERA_PATH . 'includes/Modules/*.php' ) as $file ) {
			$name = basename( $file, '.php' );
			if ( 'index' === $name ) {
				continue;
			}
			$modules[] = 'StreamSera\\Modules\\' . $name;
		}
		sort( $modules );
		/**
		 * Filter the list of feature modules to boot.
		 *
		 * @param string[] $modules Class names.
		 */
		return (array) apply_filters( 'streamsera_modules', $modules );
	}

	/**
	 * Activation: register types, flush rewrites, seed defaults.
	 */
	public static function activate( $network_wide = false ) {
		Installation::activate();
		Admin\Menu::queue_activation_redirect( 'core', (bool) $network_wide );
	}

	/**
	 * Deactivation.
	 */
	public static function deactivate() {
		Installation::deactivate();
	}
}