<?php

namespace PluginMagnet\AIStockPredictor;

defined( 'ABSPATH' ) || exit;

/**
 * Class Plugin.
 *
 * @since 1.0.0
 *
 * @package PluginMagnet\AIStockPredictor
 */
final class Plugin {
	/**
	 * Plugin version.
	 *
	 * @var string
	 */
	const VERSION = '1.0.0';

	/**
	 * The single instance of the class.
	 *
	 * @since 1.0.0
	 * @var self
	 */
	private static $instance = null;

	/**
	 * Plugin base file.
	 *
	 * @var string
	 */
	private $file;

	/**
	 * Plugin configuration.
	 *
	 * @since 1.0.0
	 * @var array
	 */
	private $config;

	/**
	 * Plugin constructor.
	 *
	 * @since 1.0.0
	 *
	 * @param string $file Plugin base file.
	 */
	private function __construct( $file ) {
		$this->file = $file;
		$this->setup();
	}

	/**
	 * Setup plugin configuration and hooks.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	private function setup() {
		$this->setup_config();
		if ( ! $this->check_dependencies() ) {
			return;
		}
		$this->includes();
		$this->init_hooks();
	}

	/**
	 * Setup plugin configuration.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	private function setup_config() {
		$this->config = array(
			'version'      => self::VERSION,
			'file'         => $this->file,
			'path'         => dirname( $this->file ),
			'includes'     => dirname( $this->file ) . '/includes',
			'url'          => plugins_url( '', $this->file ),
			'assets'       => plugins_url( 'assets', $this->file ),
			'basename'     => plugin_basename( $this->file ),
			'settings_url' => admin_url( 'admin.php?page=ai-stock-predictor' ),
			'docs_url'     => 'https://pluginmagnet.com/docs/ai-stock-predictor/',
			'support_url'  => 'https://pluginmagnet.com/support/',
		);

		define( 'AISTPR_VERSION', self::VERSION );
		define( 'AISTPR_TEMPLATE_PATH', plugin_dir_path( __FILE__ ) . 'templates/' );
	}

	/**
	 * Check plugin dependencies.
	 *
	 * @since 1.0.0
	 * @return bool
	 */
	private function check_dependencies() {
		if ( ! is_plugin_active( 'woocommerce/woocommerce.php' ) ) {
			add_action( 'admin_notices', array( $this, 'woocommerce_missing_notice' ) );
			return false;
		}

		return true;
	}

	/**
	 * Gets the single instance of the class.
	 *
	 * @since 1.0.0
	 *
	 * @param string $file Plugin base file.
	 *
	 * @return static
	 */
	public static function instance( $file = '' ) {
		if ( null === self::$instance ) {
			if ( empty( $file ) ) {
				wp_die( esc_html__( 'AI Stock Predictor plugin file not set', 'ai-stock-predictor' ) );
			}

			self::$instance = new self( $file );
		}

		return self::$instance;
	}

	/**
	 * Include required files.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	private function includes() {
		if ( file_exists( $this->config['path'] . '/vendor/autoload.php' ) ) {
			require_once $this->config['path'] . '/vendor/autoload.php';
		}
		require_once $this->config['includes'] . '/functions.php';
		if ( is_admin() ) {
			require_once $this->config['includes'] . '/Admin/Admin.php';
		}
	}

	/**
	 * Hook into actions and filters.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	private function init_hooks() {
		add_action( 'before_woocommerce_init', array( $this, 'woocommerce_hpos_issue' ) );
		add_action( 'woocommerce_init', array( $this, 'init' ) );
		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
	}

	/**
	 * Handle WooCommerce HPOS compatibility.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	public function woocommerce_hpos_issue() {
		if ( class_exists( '\Automattic\WooCommerce\Utilities\FeaturesUtil' ) ) {
			\Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility( 'custom_order_tables', $this->config['file'], true );
			\Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility( 'cart_checkout_blocks', $this->config['file'], true );
		}
	}

	/**
	 * Init the plugin after WooCommerce is loaded.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	public function init() {
		if ( is_admin() ) {
			new Admin\Admin();
		}

		/**
		 * Plugin initialization action.
		 *
		 * @since 1.0.0
		 * @param Plugin $plugin Plugin instance.
		 */
		do_action( 'aistpr_init', $this );
	}

	/**
	 * Display WooCommerce missing notice.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	public function woocommerce_missing_notice() {
		?>
		<div class="notice notice-error">
			<p><?php esc_html_e( 'AI Stock Predictor requires WooCommerce to be installed and active.', 'ai-stock-predictor' ); ?></p>
		</div>
		<?php
	}

	/**
	 * Enqueue frontend scripts and styles.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	public function enqueue_scripts() {
		// TODO::Frontend assets will be added here.
	}
}