<?php

namespace Yipresser\AdminOptimizer\Modules;

use Yipresser\AdminOptimizer\Base_Module;

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Custom_Code module
 *
 * Manages global custom CSS, JavaScript, and HTML injection on the site frontend.
 * Uses a single CPT (ao_custom_code) with a _ao_cc_type meta field.
 */
class Custom_Code extends Base_Module {

	const OPTION_NAME = 'adminoptim_custom_code';
	const MODULE_ID   = 'custom_code';
	const MODULE_SLUG = 'custom-code';
	const MODULE_PATH = ADMINOPTIMIZER_MODULES_PATH . 'custom-code/';
	const MODULE_URI  = ADMINOPTIMIZER_MODULES_URI . 'custom-code/';

	const POST_TYPE           = 'ao_custom_code';
	const NONCE_ACTION        = 'ao-custom-code-save';
	const NONCE_FIELD         = 'ao_cc_nonce';
	const NONCE_PRESET_ACTION = 'ao-cc-preset-create';
	const NONCE_PRESET_FIELD  = 'ao_cc_preset_nonce';
	const CAPABILITY          = 'edit_theme_options';

	const TYPES           = [ 'css', 'js', 'html', 'shortcode' ];
	const VALID_POSITIONS = [ 'wp_head', 'wp_body_open', 'wp_footer' ];
	const VALID_DISPLAYS  = [ 'inline', 'external' ];

	// Named load-priority presets → WordPress hook priority values (Pro only).
	const VALID_PRIORITIES = [ 'early', 'default', 'late' ];
	const PRIORITY_MAP     = [
		'early'   => -10,
		'default' => 10,
		'late'    => 99,
	];

	const ALL_LOCATIONS = [
		'sitewide'  => 'Sitewide',
		'frontpage' => 'Front page',
		'homepage'  => 'Home page',
		'single'    => 'Single Post',
		'page'      => 'Page',
		'category'  => 'Category archive',
		'tag'       => 'Tag archive',
		'author'    => 'Author archive',
		'date'      => 'Date archive',
		'search'    => 'Search',
		'404'       => '404',
	];

	const LOCATION_FUNC = [
		'frontpage' => 'is_front_page',
		'homepage'  => 'is_home',
		'single'    => 'is_single',
		'page'      => 'is_page',
		'category'  => 'is_category',
		'tag'       => 'is_tag',
		'author'    => 'is_author',
		'date'      => 'is_date',
		'search'    => 'is_search',
		'404'       => 'is_404',
	];

	protected $output;

	protected $presets;

	/**
	 * Instantiate sub-classes and start each one.
	 *
	 * @return void
	 */
	protected function init(): void {
		add_action( 'init', [ $this, 'register' ] );
		add_action( 'init', [ $this, 'register_builtin_shortcodes' ], 10 );
		$this->settings = new Custom_Code_Settings();
		$this->output   = new Custom_Code_Output();
		$this->presets  = new Custom_Code_Presets();
	}

	/**
	 * Register the ao_custom_code post type.
	 *
	 * @return void
	 */
	public function register(): void {
		$labels = [
			'name'                   => _x( 'Custom Code', 'Post Type General Name', 'admin-optimizer' ),
			'singular_name'          => _x( 'Custom Code', 'Post Type Singular Name', 'admin-optimizer' ),
			'menu_name'              => __( 'Custom Code', 'admin-optimizer' ),
			'all_items'              => __( 'All Custom Code', 'admin-optimizer' ),
			'add_new'                => __( 'Add New', 'admin-optimizer' ),
			'add_new_item'           => __( 'Add New Custom Code', 'admin-optimizer' ),
			'new_item'               => __( 'New Custom Code', 'admin-optimizer' ),
			'edit_item'              => __( 'Edit Custom Code', 'admin-optimizer' ),
			'update_item'            => __( 'Update Custom Code', 'admin-optimizer' ),
			'search_items'           => __( 'Search Custom Code', 'admin-optimizer' ),
			'item_published'         => __( 'Custom Code published.', 'admin-optimizer' ),
			'item_updated'           => __( 'Custom Code updated.', 'admin-optimizer' ),
			'item_scheduled'         => __( 'Custom Code scheduled.', 'admin-optimizer' ),
			'item_reverted_to_draft' => __( 'Custom Code reverted to draft.', 'admin-optimizer' ),
		];

		register_post_type(
			self::POST_TYPE,
			[
				'labels'              => $labels,
				'supports'            => [ 'title', 'revisions' ],
				'hierarchical'        => false,
				'public'              => false,
				'show_ui'             => true,
				'show_in_menu'        => false,
				'can_export'          => true,
				'has_archive'         => false,
				'exclude_from_search' => true,
				'show_in_rest'        => false,
				'capabilities'        => [
					'edit_post'              => self::CAPABILITY,
					'read_post'              => self::CAPABILITY,
					'delete_post'            => self::CAPABILITY,
					'edit_posts'             => self::CAPABILITY,
					'edit_others_posts'      => self::CAPABILITY,
					'publish_posts'          => self::CAPABILITY,
					'read_private_posts'     => self::CAPABILITY,
					'delete_posts'           => self::CAPABILITY,
					'delete_private_posts'   => self::CAPABILITY,
					'delete_published_posts' => self::CAPABILITY,
					'delete_others_posts'    => self::CAPABILITY,
					'edit_private_posts'     => self::CAPABILITY,
					'edit_published_posts'   => self::CAPABILITY,
					'create_posts'           => self::CAPABILITY,
				],
			]
		);
	}

	/** Register the built-in shortcode library. */
	public function register_builtin_shortcodes(): void {
		add_shortcode( 'ao_copyright', static fn() => '&#169;' );
		add_shortcode( 'ao_year', static fn() => date_i18n( 'Y' ) );
		add_shortcode( 'ao_sitename', static fn() => esc_html( get_bloginfo( 'name' ) ) );
		add_shortcode( 'ao_tagline', static fn() => esc_html( get_bloginfo( 'description' ) ) );
		add_shortcode( 'ao_home_url', static fn() => esc_url( home_url( '/' ) ) );
		add_shortcode( 'ao_post_title', static fn() => is_singular() ? esc_html( get_the_title() ) : '' );
		add_shortcode( 'ao_post_date', static fn() => is_singular() ? esc_html( get_the_date() ) : '' );
		add_shortcode( 'ao_post_modified', static fn() => is_singular() ? esc_html( get_the_modified_date() ) : '' );
		add_shortcode( 'ao_user_name', static fn() => is_user_logged_in() ? esc_html( wp_get_current_user()->display_name ) : '' );
		add_shortcode( 'ao_user_email', static fn() => is_user_logged_in() ? esc_html( wp_get_current_user()->user_email ) : '' );
		add_shortcode( 'ao_login_url', static fn() => esc_url( wp_login_url() ) );
		add_shortcode( 'ao_logout_url', static fn() => esc_url( wp_logout_url() ) );
		add_shortcode(
			'ao_privacy_page',
			static function () {
				$url = get_privacy_policy_url();
				return $url ? esc_url( $url ) : '';
			}
		);
	}

	/**
	 * Include both the custom list page and native snippet edit screens.
	 *
	 * @param string $hook_suffix Current admin page hook suffix.
	 */
	protected function is_settings_screen( string $hook_suffix ): bool {
		if ( parent::is_settings_screen( $hook_suffix ) ) {
			return true;
		}

		$screen = get_current_screen();

		return in_array( $hook_suffix, [ 'post.php', 'post-new.php' ], true )
			&& $screen
			&& self::POST_TYPE === $screen->post_type;
	}
}