<?php
/**
 * Plugin Name: A. Smith Speed Optimizer
 * Plugin URI:  https://asmith.media/speed-optimizer/
 * Description: Lazy loading, HTML minification, JS deferral, bloat removal, database cleanup, and performance scoring to speed up your WordPress site.
 * Version:     1.0.0
 * Requires at least: 6.0
 * Requires PHP: 7.4
 * Author:      A. Smith Media
 * Author URI:  https://asmith.media
 * License:     GPL-2.0-or-later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: a-smith-speed-optimizer
 * Domain Path: /languages
 *
 * @package Asmith_Speed_Optimizer
 */

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

define( 'ASMITH_SO_VERSION', '1.0.0' );
define( 'ASMITH_SO_PLUGIN_FILE', __FILE__ );
define( 'ASMITH_SO_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
define( 'ASMITH_SO_PLUGIN_URL', plugin_dir_url( __FILE__ ) );
define( 'ASMITH_SO_PLUGIN_BASENAME', plugin_basename( __FILE__ ) );

/**
 * Main plugin class.
 */
final class Asmith_Speed_Optimizer {

	/**
	 * Single instance.
	 *
	 * @var self|null
	 */
	private static $instance = null;

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

	/**
	 * Constructor.
	 */
	private function __construct() {
		$this->load_includes();
		$this->init_hooks();
	}

	/**
	 * Load class files.
	 */
	private function load_includes() {
		$includes = array(
			'class-lazy-load',
			'class-minify-html',
			'class-defer-js',
			'class-bloat-remover',
			'class-db-cleanup',
			'class-performance-score',
			'class-asset-counter',
			'class-admin-page',
			'class-pro-bridge',
		);

		foreach ( $includes as $file ) {
			require_once ASMITH_SO_PLUGIN_DIR . 'includes/' . $file . '.php';
		}
	}

	/**
	 * Register WordPress hooks.
	 */
	private function init_hooks() {
		register_activation_hook( ASMITH_SO_PLUGIN_FILE, array( $this, 'activate' ) );
		register_deactivation_hook( ASMITH_SO_PLUGIN_FILE, array( $this, 'deactivate' ) );

		add_action( 'plugins_loaded', array( $this, 'on_plugins_loaded' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_admin_assets' ) );
		add_action( 'activated_plugin', array( $this, 'redirect_after_activation' ) );
	}

	/**
	 * Runs after all plugins are loaded.
	 */
	public function on_plugins_loaded() {
		Asmith_SO_Lazy_Load::instance();
		Asmith_SO_Minify_HTML::instance();
		Asmith_SO_Defer_JS::instance();
		Asmith_SO_Bloat_Remover::instance();
		Asmith_SO_DB_Cleanup::instance();
		Asmith_SO_Performance_Score::instance();
		Asmith_SO_Asset_Counter::instance();
		Asmith_SO_Admin_Page::instance();
		Asmith_SO_Pro_Bridge::instance();
	}

	/**
	 * Enqueue admin CSS and JS on our pages.
	 *
	 * @param string $hook_suffix The current admin page hook.
	 */
	public function enqueue_admin_assets( $hook_suffix ) {
		$our_pages = array( 'toplevel_page_asmith-so', 'speed-optimizer_page_asmith-so-settings' );
		if ( ! in_array( $hook_suffix, $our_pages, true ) ) {
			return;
		}

		wp_enqueue_style(
			'asmith-so-admin',
			ASMITH_SO_PLUGIN_URL . 'assets/css/admin.css',
			array(),
			ASMITH_SO_VERSION
		);

		wp_enqueue_script(
			'asmith-so-admin',
			ASMITH_SO_PLUGIN_URL . 'assets/js/admin.js',
			array( 'jquery' ),
			ASMITH_SO_VERSION,
			true
		);

		wp_localize_script( 'asmith-so-admin', 'asmith_so', array(
			'ajax_url' => admin_url( 'admin-ajax.php' ),
			'nonce'    => wp_create_nonce( 'asmith_so_nonce' ),
			'i18n'     => array(
				'scanning'    => esc_html__( 'Scanning...', 'a-smith-speed-optimizer' ),
				'scan_done'   => esc_html__( 'Scan complete!', 'a-smith-speed-optimizer' ),
				'scan_failed' => esc_html__( 'Scan failed. Please try again.', 'a-smith-speed-optimizer' ),
				'cleaning'    => esc_html__( 'Cleaning...', 'a-smith-speed-optimizer' ),
				'cleaned'     => esc_html__( 'Cleaned!', 'a-smith-speed-optimizer' ),
				'confirm_cleanup' => esc_html__( 'Are you sure you want to clean up these items? This cannot be undone.', 'a-smith-speed-optimizer' ),
			),
		) );

		// On the dashboard page, if this is the first run, enqueue the first-scan animation.
		if ( 'toplevel_page_asmith-so' === $hook_suffix && empty( get_option( 'asmith_so_last_scan' ) ) ) {
			wp_enqueue_script(
				'asmith-so-firstrun',
				ASMITH_SO_PLUGIN_URL . 'assets/js/first-scan.js',
				array( 'jquery', 'asmith-so-admin' ),
				ASMITH_SO_VERSION,
				true
			);

			wp_localize_script( 'asmith-so-firstrun', 'asmith_so_firstrun', array(
				'dashboard_url' => admin_url( 'admin.php?page=asmith-so' ),
				'i18n'          => array(
					'analyzing'             => __( 'Analyzing current optimizations...', 'a-smith-speed-optimizer' ),
					'optimizations_checked' => __( 'Optimization status checked', 'a-smith-speed-optimizer' ),
					'counting_assets'       => __( 'Counting scripts and styles...', 'a-smith-speed-optimizer' ),
					'assets_inventoried'    => __( 'Assets inventoried', 'a-smith-speed-optimizer' ),
					'checking_bloat'        => __( 'Checking for bloat items...', 'a-smith-speed-optimizer' ),
					'bloat_complete'        => __( 'Bloat analysis complete', 'a-smith-speed-optimizer' ),
					'measuring'             => __( 'Measuring performance metrics...', 'a-smith-speed-optimizer' ),
					'metrics_collected'     => __( 'Metrics collected', 'a-smith-speed-optimizer' ),
					'calculating'           => __( 'Calculating performance score...', 'a-smith-speed-optimizer' ),
					'score_calculated'      => __( 'Score calculated', 'a-smith-speed-optimizer' ),
					'scan_complete'         => __( 'Scan complete!', 'a-smith-speed-optimizer' ),
					'scan_errors'           => __( 'Scan complete with some errors. View dashboard.', 'a-smith-speed-optimizer' ),
					'headline_fast'         => __( 'Your site is lightning fast!', 'a-smith-speed-optimizer' ),
					'msg_fast'              => __( 'All optimizations are in great shape.', 'a-smith-speed-optimizer' ),
					'headline_good'         => __( 'Good speed, with room to improve.', 'a-smith-speed-optimizer' ),
					'msg_good'              => __( 'Check your dashboard for optimization opportunities.', 'a-smith-speed-optimizer' ),
					'headline_attention'    => __( 'Some optimizations need attention.', 'a-smith-speed-optimizer' ),
					'msg_attention'         => __( 'Enable more features to boost your speed score.', 'a-smith-speed-optimizer' ),
					'headline_slow'         => __( 'Your site needs speed optimization.', 'a-smith-speed-optimizer' ),
					'msg_slow'              => __( 'View your dashboard to start optimizing.', 'a-smith-speed-optimizer' ),
				),
			) );
		}
	}

	/**
	 * Plugin activation.
	 */
	public function activate() {
		// Schedule weekly performance scan cron.
		if ( ! wp_next_scheduled( 'asmith_so_weekly_scan' ) ) {
			wp_schedule_event( time(), 'weekly', 'asmith_so_weekly_scan' );
		}

		// Set default options.
		$defaults = array(
			'asmith_so_lazy_load'              => true,
			'asmith_so_minify_html'            => false,
			'asmith_so_defer_js'               => false,
			'asmith_so_defer_js_exclusions'    => '',
			'asmith_so_lazy_load_exclusions'   => '',
			'asmith_so_remove_emoji'           => true,
			'asmith_so_remove_embeds'          => true,
			'asmith_so_remove_query_strings'   => true,
			'asmith_so_remove_dashicons'       => true,
			'asmith_so_remove_xmlrpc'          => true,
			'asmith_so_remove_rest_links'      => true,
			'asmith_so_remove_shortlinks'      => true,
			'asmith_so_remove_wlw'             => true,
			'asmith_so_remove_rsd'             => true,
			'asmith_so_remove_rss'             => false,
			'asmith_so_email_frequency'        => 'weekly',
			'asmith_so_email_recipients'       => get_option( 'admin_email' ),
			'asmith_so_auto_scan'              => true,
		);

		foreach ( $defaults as $key => $value ) {
			if ( false === get_option( $key ) ) {
				update_option( $key, $value );
			}
		}

		// Store activation time for first-run scan.
		update_option( 'asmith_so_activated', time() );

		// Flush rewrite rules.
		flush_rewrite_rules();
	}

	/**
	 * Redirect to Speed Optimizer dashboard immediately after activation.
	 *
	 * @param string $plugin The plugin file that was activated.
	 */
	public function redirect_after_activation( $plugin ) {
		if ( $plugin !== ASMITH_SO_PLUGIN_BASENAME ) {
			return;
		}

		// Don't redirect on bulk activation or WP-CLI.
		if ( isset( $_GET['activate-multi'] ) || wp_doing_ajax() || ( defined( 'WP_CLI' ) && WP_CLI ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- WP core activation redirect pattern, no form data processed.
			return;
		}

		wp_safe_redirect( admin_url( 'admin.php?page=asmith-so' ) );
		exit;
	}

	/**
	 * Plugin deactivation.
	 */
	public function deactivate() {
		wp_clear_scheduled_hook( 'asmith_so_weekly_scan' );
		wp_clear_scheduled_hook( 'asmith_so_daily_scan' );
		wp_clear_scheduled_hook( 'asmith_so_email_report' );
	}
}

/**
 * Returns the main plugin instance.
 *
 * @return Asmith_Speed_Optimizer
 */
function asmith_so() {
	return Asmith_Speed_Optimizer::instance();
}

// Boot the plugin.
asmith_so();