<?php
/**
 * Plugin container / bootstrap wiring.
 *
 * @package AccordionFaq
 */

namespace AccordionFaq;

defined( 'ABSPATH' ) || exit;

use AccordionFaq\Setup\PostType;
use AccordionFaq\Setup\Taxonomy;
use AccordionFaq\Setup\Meta;
use AccordionFaq\Frontend\Assets;
use AccordionFaq\Frontend\Renderer;
use AccordionFaq\Frontend\Submission;
use AccordionFaq\Shortcode\Shortcode;
use AccordionFaq\Schema\Schema;
use AccordionFaq\Blocks\Block;
use AccordionFaq\Rest\Controller;
use AccordionFaq\Admin\Menu;
use AccordionFaq\Admin\AdminAssets;
use AccordionFaq\Admin\MetaBoxes;
use AccordionFaq\Admin\Columns;
use AccordionFaq\Admin\ImportExport;
use AccordionFaq\Integrations\Elementor;
use AccordionFaq\Integrations\WooCommerce;
use AccordionFaq\Integrations\WPBakery;
use AccordionFaq\Integrations\Divi;
use AccordionFaq\Integrations\Bricks;
use AccordionFaq\Integrations\BeaverBuilder;

/**
 * Class Plugin
 *
 * Singleton that wires every module onto the correct hooks.
 */
final class Plugin {

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

	/**
	 * Shared renderer (also used by the schema collector and the block).
	 *
	 * @var Renderer
	 */
	private $renderer;

	/**
	 * Schema service.
	 *
	 * @var Schema
	 */
	private $schema;

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

	/**
	 * Private constructor.
	 */
	private function __construct() {}

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

	/**
	 * Boot the plugin: instantiate and register all modules.
	 *
	 * @return void
	 */
	public function boot() {
		// Translations load automatically via WordPress just-in-time loading
		// (core 4.6+); no manual load_plugin_textdomain() call is required.

		// Core services shared across entry points.
		$this->schema   = new Schema();
		$this->renderer = new Renderer( $this->schema );

		// Setup layer (data model).
		( new PostType() )->register();
		( new Taxonomy() )->register();
		( new Meta() )->register();

		// Frontend.
		( new Assets() )->register();
		( new Shortcode( $this->renderer ) )->register();
		( new Submission() )->register();
		$this->schema->register();

		// Block (renders through the shared renderer).
		( new Block( $this->renderer ) )->register();

		// REST API (analytics, search, submissions, AI) — needed on front + admin.
		( new Controller() )->register();

		// Email the admin when a visitor submits a question (front + admin: the
		// submission hook fires during a REST request that may be either).
		( new \AccordionFaq\Notifications\SubmissionEmail() )->register();

		// Integrations (self-guarded when the host plugin is inactive).
		( new Elementor() )->register();
		( new WooCommerce() )->register();
		( new WPBakery() )->register();
		( new Divi() )->register();
		( new Bricks() )->register();
		( new BeaverBuilder() )->register();

		// Admin.
		if ( is_admin() ) {
			// Idempotent schema/data upgrade for installs updated in place.
			add_action( 'admin_init', array( '\AccordionFaq\Setup\Activator', 'maybe_upgrade' ) );

			( new Menu() )->register();
			( new AdminAssets() )->register();
			( new MetaBoxes() )->register();
			( new Columns() )->register();
			( new ImportExport() )->register();
			( new \AccordionFaq\Admin\OrderList() )->register();
		}

		/**
		 * Fires once all core modules are wired.
		 *
		 * @param Plugin $plugin The plugin instance.
		 */
		do_action( 'accordion_faq_loaded', $this );
	}

	/**
	 * Access the shared renderer.
	 *
	 * @return Renderer
	 */
	public function renderer() {
		return $this->renderer;
	}

	/**
	 * Access the schema service.
	 *
	 * @return Schema
	 */
	public function schema() {
		return $this->schema;
	}
}