<?php
/**
 * Class for Admin Assets
 *
 * @package   PopupMaker
 * @copyright Copyright (c) 2024, Code Atlantic LLC
 */

/**
 * Class PUM_Admin_Assets
 *
 * @since 1.7.0
 */
class PUM_Admin_Assets {

	/**
	 * @var string
	 *
	 * @deprecated 1.21.0
	 */
	public static $suffix = '';

	/**
	 * @var string
	 */
	public static $js_url;

	/**
	 * @var string
	 */
	public static $css_url;

	/**
	 * @var bool Use minified libraries if SCRIPT_DEBUG is turned off.
	 */
	public static $debug;

	/**
	 * Initialize
	 */
	public static function init() {
		self::$debug   = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG;
		self::$suffix  = self::$debug ? '' : '.min';
		self::$js_url  = Popup_Maker::$URL . 'dist/assets/';
		self::$css_url = Popup_Maker::$URL . 'dist/assets/';

		add_action( 'admin_enqueue_scripts', [ __CLASS__, 'register_admin_scripts' ] );
		add_action( 'admin_print_scripts', [ __CLASS__, 'maybe_localize_and_templates' ], - 1 );
		add_action( 'admin_print_footer_scripts', [ __CLASS__, 'maybe_localize_and_templates' ], - 1 );
		self::add_localization_before_printer( 'admin_print_scripts', 'print_head_scripts' );
		self::add_localization_before_printer( 'admin_print_footer_scripts', '_wp_footer_scripts' );

		add_action( 'admin_enqueue_scripts', [ __CLASS__, 'register_admin_styles' ], 100 );

		add_action( 'admin_enqueue_scripts', [ __CLASS__, 'fix_broken_extension_scripts' ], 100 );
	}

	/**
	 * Recheck after all earlier-priority enqueues and immediately before WordPress prints scripts.
	 *
	 * @param string $hook    Script printing hook.
	 * @param string $printer WordPress printer callback.
	 *
	 * @return void
	 */
	private static function add_localization_before_printer( $hook, $printer ) {
		$priority = has_action( $hook, $printer );

		if ( false === $priority ) {
			return;
		}

		remove_action( $hook, $printer, $priority );
		add_action( $hook, [ __CLASS__, 'maybe_localize_and_templates' ], $priority );
		add_action( $hook, $printer, $priority );
	}

	public static function fix_broken_extension_scripts() {

		if ( wp_script_is( 'pum-mci-admin' ) && class_exists( 'PUM_MCI' ) && version_compare( PUM_MCI::$VER, '1.3.0', '<' ) && ! pum_is_settings_page() ) {
			wp_dequeue_script( 'pum-mci-admin' );
		}
	}

	/**
	 * Load Admin Scripts
	 */
	public static function register_admin_scripts() {
		wp_register_script( 'pum-admin-general', self::$js_url . 'admin-general.js', [ 'jquery', 'wp-color-picker', 'jquery-ui-slider', 'wp-util' ], Popup_Maker::$VER, true );
		wp_register_script( 'pum-admin-batch', self::$js_url . 'admin-batch.js', [ 'pum-admin-general' ], Popup_Maker::$VER, true );
		wp_register_script( 'pum-admin-popup-editor', self::$js_url . 'admin-popup-editor.js', [ 'pum-admin-general' ], Popup_Maker::$VER, true );
		wp_register_script( 'pum-admin-theme-editor', self::$js_url . 'admin-theme-editor.js', [ 'pum-admin-general' ], Popup_Maker::$VER, true );
		wp_register_script( 'pum-admin-settings-page', self::$js_url . 'admin-settings-page.js', [ 'pum-admin-general' ], Popup_Maker::$VER, true );
		wp_register_script( 'pum-admin-shortcode-ui', self::$js_url . 'admin-shortcode-ui.js', [ 'pum-admin-general' ], Popup_Maker::$VER, true );
		// @deprecated handle. Currently loads empty file and admin-general as dependency.
		wp_register_script( 'popup-maker-admin', self::$js_url . 'admin-deprecated.js', [ 'pum-admin-general' ], Popup_Maker::$VER, true );

		if ( PUM_Utils_Upgrades::instance()->has_uncomplete_upgrades() ) {
			wp_enqueue_script( 'pum-admin-batch' );
		}

		if ( pum_is_all_popups_page() ) {
			wp_enqueue_script( 'pum-admin-general' );
		}

		if ( pum_is_popup_editor() ) {
			wp_enqueue_script( 'pum-admin-popup-editor' );
		}

		if ( pum_is_popup_theme_editor() ) {
			wp_enqueue_script( 'pum-admin-theme-editor' );
			wp_localize_script( 'pum-admin-theme-editor', 'pum_google_fonts', PUM_Integration_GoogleFonts::fetch_fonts() );
		}

		if ( pum_is_settings_page() ) {
			wp_enqueue_script( 'pum-admin-settings-page' );
			wp_localize_script(
				'pum-admin-settings-page',
				'pum_css_viewer',
				[
					'ajax_url' => admin_url( 'admin-ajax.php' ),
					'nonce'    => wp_create_nonce( 'pum_get_css_styles' ),
					'i18n'     => [
						'loading'              => __( 'Loading Popup Maker CSS…', 'popup-maker' ),
						'load_error'           => __( 'Popup Maker CSS could not be loaded. Please try again.', 'popup-maker' ),
						'readable_unavailable' => __( 'Readable CSS is unavailable. Rebuild the plugin assets and try again.', 'popup-maker' ),
						'show'                 => __( 'Show Popup Maker CSS', 'popup-maker' ),
					],
				]
			);
		}
	}

	/**
	 * Build variables for the legacy admin script only when it is enqueued.
	 *
	 * @return array<string,mixed>
	 */
	private static function get_admin_vars() {
		return apply_filters(
			'pum_admin_vars',
			apply_filters(
				'pum_admin_var',
				[
					// phpcs:ignore WordPress.Security.NonceVerification.Recommended
					'post_id'             => ! empty( $_GET['post'] ) ? intval( $_GET['post'] ) : null,
					'pm_dir_url'          => Popup_Maker::$URL,
					'default_provider'    => pum_get_option( 'newsletter_default_provider', 'none' ),
					'homeurl'             => home_url(),
					'object_search_nonce' => wp_create_nonce( 'pum_ajax_object_search_nonce' ),
					'rest_nonce'          => wp_create_nonce( 'wp_rest' ),
					'I10n'                => [
						'preview_popup'                   => __( 'Preview', 'popup-maker' ),
						'add'                             => __( 'Add', 'popup-maker' ),
						'save'                            => __( 'Save', 'popup-maker' ),
						'update'                          => __( 'Update', 'popup-maker' ),
						'insert'                          => __( 'Insert', 'popup-maker' ),
						'cancel'                          => __( 'Cancel', 'popup-maker' ),
						'confirm_delete_trigger'          => __( 'Are you sure you want to delete this trigger?', 'popup-maker' ),
						'confirm_delete_cookie'           => __( 'Are you sure you want to delete this cookie?', 'popup-maker' ),
						'no_cookie'                       => __( 'None', 'popup-maker' ),
						'confirm_count_reset'             => __( 'Are you sure you want to reset the open count?', 'popup-maker' ),
						'shortcode_ui_button_tooltip'     => __( 'Popup Maker Shortcodes', 'popup-maker' ),
						'error_loading_shortcode_preview' => __( 'There was an error in generating the preview', 'popup-maker' ),
					],
				]
			)
		);
	}

	/**
	 *
	 */
	public static function maybe_localize_and_templates() {
		$admin_script_enqueued = self::script_is_enqueued( 'pum-admin-general' );
		$style_only_compat     = ! $admin_script_enqueued && wp_style_is( 'pum-admin-general' );

		if ( $style_only_compat ) {
			wp_enqueue_script( 'pum-admin-general' );
			wp_script_add_data( 'pum-admin-general', 'pum_style_only_compat', true );
		}

		if ( $admin_script_enqueued || $style_only_compat ) {
			$localized_data   = wp_scripts()->get_data( 'pum-admin-general', 'data' );
			$needs_admin_vars = ! self::has_localized_variable( $localized_data, 'pum_admin_vars' );
			$needs_admin      = ! self::has_localized_variable( $localized_data, 'pum_admin' );

			if ( $needs_admin_vars || $needs_admin ) {
				$admin_vars = self::get_admin_vars();

				if ( $needs_admin_vars ) {
					wp_localize_script( 'pum-admin-general', 'pum_admin_vars', $admin_vars );
				}

				if ( $needs_admin ) {
					wp_localize_script( 'pum-admin-general', 'pum_admin', $admin_vars );
				}
			}

			// Style-only legacy consumers need globals, not the field templates.
			$style_only_script = wp_scripts()->get_data( 'pum-admin-general', 'pum_style_only_compat' );
			if ( $style_only_script && self::admin_general_has_queued_consumer() ) {
				wp_script_add_data( 'pum-admin-general', 'pum_style_only_compat', false );
				$style_only_script = false;
			}

			$templates_initialized = wp_scripts()->get_data( 'pum-admin-general', 'pum_templates_initialized' );

			if ( ! $style_only_script && ! $templates_initialized ) {
				// Register Templates.
				PUM_Admin_Templates::init();
				wp_script_add_data( 'pum-admin-general', 'pum_templates_initialized', true );
			}
		}

		if ( self::script_is_enqueued( 'pum-admin-batch' ) ) {
			$batch_data = wp_scripts()->get_data( 'pum-admin-batch', 'data' );

			if ( ! self::has_localized_variable( $batch_data, 'pum_batch_vars' ) ) {
				wp_localize_script(
					'pum-admin-batch',
					'pum_batch_vars',
					[
						'complete'              => __( 'You are all set, the upgrades completed successfully!', 'popup-maker' ),
						'unsupported_browser'   => __( 'We are sorry but your browser is not compatible with this kind of file upload. Please upgrade your browser.', 'popup-maker' ),
						'import_field_required' => 'This field must be mapped for the import to proceed.',
					]
				);
			}
		}
	}

	/**
	 * Check for a complete wp_localize_script variable declaration.
	 *
	 * @param mixed  $data     Existing inline script data.
	 * @param string $variable JavaScript variable name.
	 *
	 * @return bool
	 */
	private static function has_localized_variable( $data, $variable ) {
		if ( ! is_string( $data ) || '' === $data ) {
			return false;
		}

		$pattern = '/(?:^|[;\r\n])\s*var\s+' . preg_quote( $variable, '/' ) . '\s*=/m';

		return 1 === preg_match( $pattern, $data );
	}

	/**
	 * Check the queued dependency tree for a script handle.
	 *
	 * @param string $target Script handle.
	 *
	 * @return bool
	 */
	private static function script_is_enqueued( $target ) {
		$wp_scripts = wp_scripts();
		$pending    = $wp_scripts->queue;
		$checked    = [];

		while ( ! empty( $pending ) ) {
			$handle = array_pop( $pending );

			if ( $target === $handle ) {
				return true;
			}

			if ( isset( $checked[ $handle ] ) ) {
				continue;
			}

			$checked[ $handle ] = true;

			if ( isset( $wp_scripts->registered[ $handle ] ) ) {
				$pending = array_merge( $pending, $wp_scripts->registered[ $handle ]->deps );
			}
		}

		return false;
	}

	/**
	 * Check whether a queued script depends on the legacy general admin script.
	 *
	 * @return bool
	 */
	private static function admin_general_has_queued_consumer() {
		$wp_scripts = wp_scripts();

		foreach ( $wp_scripts->queue as $queued_handle ) {
			if ( 'pum-admin-general' === $queued_handle ) {
				continue;
			}

			$pending = [ $queued_handle ];
			$checked = [];

			while ( ! empty( $pending ) ) {
				$handle = array_pop( $pending );

				if ( isset( $checked[ $handle ] ) || ! isset( $wp_scripts->registered[ $handle ] ) ) {
					continue;
				}

				$checked[ $handle ] = true;

				foreach ( $wp_scripts->registered[ $handle ]->deps as $dependency ) {
					if ( 'pum-admin-general' === $dependency ) {
						return true;
					}

					$pending[] = $dependency;
				}
			}
		}

		return false;
	}

	/**
	 * Load Admin Styles
	 */
	public static function register_admin_styles() {
		$rtl = ( is_rtl() ? '-rtl' : '' );

		wp_register_style( 'pum-admin-general', self::$css_url . 'admin-general' . $rtl . '.css', [ 'dashicons', 'wp-color-picker' ], Popup_Maker::$VER );
		wp_register_style( 'pum-admin-batch', self::$css_url . 'admin-batch' . $rtl . '.css', [ 'pum-admin-general' ], Popup_Maker::$VER );
		wp_register_style( 'pum-admin-popup-editor', self::$css_url . 'admin-popup-editor' . $rtl . '.css', [ 'pum-admin-general' ], Popup_Maker::$VER );
		wp_register_style( 'pum-admin-theme-editor', self::$css_url . 'admin-theme-editor' . $rtl . '.css', [ 'pum-admin-general' ], Popup_Maker::$VER );
		wp_register_style( 'pum-admin-extensions-page', self::$css_url . 'admin-extensions-page' . $rtl . '.css', [ 'pum-admin-general' ], Popup_Maker::$VER );
		wp_register_style( 'pum-admin-settings-page', self::$css_url . 'admin-settings-page' . $rtl . '.css', [ 'pum-admin-general' ], Popup_Maker::$VER );
		wp_register_style( 'pum-admin-support-page', self::$css_url . 'admin-support-page' . $rtl . '.css', [ 'pum-admin-general' ], Popup_Maker::$VER );
		wp_register_style( 'pum-admin-shortcode-ui', self::$css_url . 'admin-shortcode-ui' . $rtl . '.css', [ 'pum-admin-general' ], Popup_Maker::$VER );

		// @deprecated handle. Currently loads empty file and admin-general as dependency.
		wp_register_style( 'popup-maker-admin', self::$css_url . 'admin-deprecated' . $rtl . '.css', [ 'pum-admin-general' ], Popup_Maker::$VER );

		if ( PUM_Utils_Upgrades::instance()->has_uncomplete_upgrades() ) {
			wp_enqueue_style( 'pum-admin-batch' );
		}

		if ( pum_is_popup_editor() ) {
			wp_enqueue_style( 'pum-admin-popup-editor' );
		}

		if ( pum_is_popup_theme_editor() ) {
			PUM_Site_Assets::register_styles();
			wp_enqueue_style( 'pum-admin-theme-editor' );
		}

		if ( pum_is_extensions_page() && 'core' === apply_filters( 'pum_admin_extend_page_owner', 'core' ) ) {
			wp_enqueue_style( 'pum-admin-extensions-page' );
		}

		if ( pum_is_settings_page() ) {
			wp_enqueue_style( 'pum-admin-settings-page' );
		}

		if ( pum_is_support_page() ) {
			wp_enqueue_style( 'pum-admin-support-page' );
		}
	}

	/**
	 * @return bool
	 */
	public static function should_load() {

		if ( defined( 'PUM_FORCE_ADMIN_SCRIPTS_LOAD' ) && PUM_FORCE_ADMIN_SCRIPTS_LOAD ) {
			return true;
		}

		if ( ! is_admin() ) {
			return false;
		}

		return pum_is_admin_page();
	}
}