<?php
declare(strict_types=1);

namespace WP_Rocket\Engine\Abilities\Options;

use WP_Rocket\Admin\Options_Data;
use WP_Rocket\Engine\Abilities\AbilitiesInterface;
use WP_Rocket\Engine\Tracking\TrackingTrait;

class GetOptions implements AbilitiesInterface {
	use TrackingTrait;

	/**
	 * Options data instance.
	 *
	 * @var Options_Data
	 */
	private $options;

	/**
	 * Allowed options instance.
	 *
	 * @var AllowedOptions
	 */
	private $allowed_options;

	/**
	 * Constructor.
	 *
	 * @param Options_Data   $options         Options data instance.
	 * @param AllowedOptions $allowed_options Allowed options instance.
	 */
	public function __construct( Options_Data $options, AllowedOptions $allowed_options ) {
		$this->options         = $options;
		$this->allowed_options = $allowed_options;
	}

	/**
	 * Registers the ability to get WP Rocket options.
	 *
	 * @return void
	 */
	public function register(): void {
		if ( ! function_exists( 'wp_register_ability' ) ) {
			return;
		}

		$schema_definitions = [
			// Cache settings.
			'cache_logged_user'                         => [
				'type'        => 'integer',
				'description' => 'Enable caching for logged-in users.',
				'enum'        => [ 0, 1 ],
			],
			'cache_webp'                                => [
				'type'        => 'integer',
				'description' => 'Enable WebP caching.',
				'enum'        => [ 0, 1 ],
			],
			'do_caching_mobile_files'                   => [
				'type'        => 'integer',
				'description' => 'Create separate cache files for mobile.',
				'enum'        => [ 0, 1 ],
			],
			'cache_reject_uri'                          => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'URLs to exclude from caching.',
			],
			'cache_reject_cookies'                      => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'Cookies that prevent caching.',
			],
			'cache_reject_ua'                           => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'User agents to exclude from caching.',
			],
			'cache_query_strings'                       => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'Query strings to cache.',
			],
			'cache_purge_pages'                         => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'URLs to always purge.',
			],
			'purge_cron_interval'                       => [
				'type'        => 'integer',
				'description' => 'Cache lifespan interval value.',
			],
			'purge_cron_unit'                           => [
				'type'        => 'string',
				'description' => 'Cache lifespan time unit.',
				'enum'        => [ 'MINUTE_IN_SECONDS', 'HOUR_IN_SECONDS', 'DAY_IN_SECONDS' ],
			],

			// File optimization - CSS.
			'minify_css'                                => [
				'type'        => 'integer',
				'description' => 'Enable CSS minification.',
				'enum'        => [ 0, 1 ],
			],
			'minify_google_fonts'                       => [
				'type'        => 'integer',
				'description' => 'Enable Google Fonts minification.',
				'enum'        => [ 0, 1 ],
			],
			'exclude_css'                               => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'CSS files to exclude from minification.',
			],
			'async_css'                                 => [
				'type'        => 'integer',
				'description' => 'Enable asynchronous CSS loading.',
				'enum'        => [ 0, 1 ],
			],
			'async_css_mobile'                          => [
				'type'        => 'integer',
				'description' => 'Enable asynchronous CSS loading on mobile.',
				'enum'        => [ 0, 1 ],
			],
			'critical_css'                              => [
				'type'        => 'string',
				'description' => 'Fallback critical CSS content.',
			],
			'remove_unused_css'                         => [
				'type'        => 'integer',
				'description' => 'Enable Remove Unused CSS (RUCSS).',
				'enum'        => [ 0, 1 ],
			],
			'remove_unused_css_safelist'                => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'CSS selectors to always keep.',
			],
			'optimize_css_delivery'                     => [
				'type'        => 'integer',
				'description' => 'Enable CSS delivery optimization.',
				'enum'        => [ 0, 1 ],
			],

			// File optimization - JS.
			'minify_js'                                 => [
				'type'        => 'integer',
				'description' => 'Enable JavaScript minification.',
				'enum'        => [ 0, 1 ],
			],
			'minify_concatenate_js'                     => [
				'type'        => 'integer',
				'description' => 'Enable JavaScript concatenation.',
				'enum'        => [ 0, 1 ],
			],
			'exclude_js'                                => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'JavaScript files to exclude from minification.',
			],
			'exclude_inline_js'                         => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'Inline JavaScript patterns to exclude.',
			],
			'defer_all_js'                              => [
				'type'        => 'integer',
				'description' => 'Enable JavaScript defer loading.',
				'enum'        => [ 0, 1 ],
			],
			'exclude_defer_js'                          => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'JavaScript files to exclude from defer.',
			],
			'delay_js'                                  => [
				'type'        => 'integer',
				'description' => 'Enable Delay JavaScript execution.',
				'enum'        => [ 0, 1 ],
			],
			'delay_js_exclusions'                       => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'JavaScript files to exclude from delay.',
			],

			// Media.
			'lazyload'                                  => [
				'type'        => 'integer',
				'description' => 'Enable image lazy loading.',
				'enum'        => [ 0, 1 ],
			],
			'lazyload_iframes'                          => [
				'type'        => 'integer',
				'description' => 'Enable iframe/video lazy loading.',
				'enum'        => [ 0, 1 ],
			],
			'lazyload_youtube'                          => [
				'type'        => 'integer',
				'description' => 'Replace YouTube videos with preview image.',
				'enum'        => [ 0, 1 ],
			],
			'lazyload_css_bg_img'                       => [
				'type'        => 'integer',
				'description' => 'Enable CSS background image lazy loading.',
				'enum'        => [ 0, 1 ],
			],
			'exclude_lazyload'                          => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'Patterns to exclude from lazy loading.',
			],
			'image_dimensions'                          => [
				'type'        => 'integer',
				'description' => 'Add missing image dimensions.',
				'enum'        => [ 0, 1 ],
			],

			// Fonts.
			'host_fonts_locally'                        => [
				'type'        => 'integer',
				'description' => 'Host Google Fonts locally.',
				'enum'        => [ 0, 1 ],
			],
			'auto_preload_fonts'                        => [
				'type'        => 'integer',
				'description' => 'Automatically preload fonts.',
				'enum'        => [ 0, 1 ],
			],

			// Preload.
			'manual_preload'                            => [
				'type'        => 'integer',
				'description' => 'Enable cache preloading.',
				'enum'        => [ 0, 1 ],
			],
			'preload_links'                             => [
				'type'        => 'integer',
				'description' => 'Enable link preloading on hover.',
				'enum'        => [ 0, 1 ],
			],
			'preload_fonts'                             => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'Font URLs to preload.',
			],
			'preload_excluded_uri'                      => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'URIs to exclude from preload.',
			],
			'dns_prefetch'                              => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'Domains to DNS prefetch.',
			],

			// Database.
			'database_revisions'                        => [
				'type'        => 'integer',
				'description' => 'Clean post revisions.',
				'enum'        => [ 0, 1 ],
			],
			'database_auto_drafts'                      => [
				'type'        => 'integer',
				'description' => 'Clean auto drafts.',
				'enum'        => [ 0, 1 ],
			],
			'database_trashed_posts'                    => [
				'type'        => 'integer',
				'description' => 'Clean trashed posts.',
				'enum'        => [ 0, 1 ],
			],
			'database_spam_comments'                    => [
				'type'        => 'integer',
				'description' => 'Clean spam comments.',
				'enum'        => [ 0, 1 ],
			],
			'database_trashed_comments'                 => [
				'type'        => 'integer',
				'description' => 'Clean trashed comments.',
				'enum'        => [ 0, 1 ],
			],
			'database_all_transients'                   => [
				'type'        => 'integer',
				'description' => 'Clean all transients.',
				'enum'        => [ 0, 1 ],
			],
			'database_optimize_tables'                  => [
				'type'        => 'integer',
				'description' => 'Optimize database tables.',
				'enum'        => [ 0, 1 ],
			],
			'schedule_automatic_cleanup'                => [
				'type'        => 'integer',
				'description' => 'Enable automatic database cleanup.',
				'enum'        => [ 0, 1 ],
			],
			'automatic_cleanup_frequency'               => [
				'type'        => 'string',
				'description' => 'Frequency of automatic cleanup.',
				'enum'        => [ 'daily', 'weekly', 'monthly' ],
			],

			// CDN.
			'cdn'                                       => [
				'type'        => 'integer',
				'description' => 'Enable CDN.',
				'enum'        => [ 0, 1 ],
			],
			'cdn_cnames'                                => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'CDN CNAME URLs.',
			],
			'cdn_zone'                                  => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'CDN zones for each CNAME.',
			],
			'cdn_reject_files'                          => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'Files to exclude from CDN.',
			],
			'cdn_reject_pages'                          => [
				'type'        => 'array',
				'items'       => [ 'type' => 'string' ],
				'description' => 'Pages to exclude from CDN.',
			],

			// Cloudflare.
			'do_cloudflare'                             => [
				'type'        => 'integer',
				'description' => 'Enable Cloudflare integration.',
				'enum'        => [ 0, 1 ],
			],
			'cloudflare_devmode'                        => [
				'type'        => 'integer',
				'description' => 'Enable Cloudflare development mode.',
				'enum'        => [ 0, 1 ],
			],
			'cloudflare_protocol_rewrite'               => [
				'type'        => 'integer',
				'description' => 'Enable Cloudflare protocol rewrite.',
				'enum'        => [ 0, 1 ],
			],
			'cloudflare_auto_settings'                  => [
				'type'        => 'integer',
				'description' => 'Apply optimal Cloudflare settings.',
				'enum'        => [ 0, 1 ],
			],

			// Heartbeat.
			'control_heartbeat'                         => [
				'type'        => 'integer',
				'description' => 'Enable Heartbeat control.',
				'enum'        => [ 0, 1 ],
			],
			'heartbeat_site_behavior'                   => [
				'type'        => 'string',
				'description' => 'Heartbeat behavior on frontend.',
				'enum'        => [ '', 'reduce_periodicity', 'disable' ],
			],
			'heartbeat_admin_behavior'                  => [
				'type'        => 'string',
				'description' => 'Heartbeat behavior in admin.',
				'enum'        => [ '', 'reduce_periodicity', 'disable' ],
			],
			'heartbeat_editor_behavior'                 => [
				'type'        => 'string',
				'description' => 'Heartbeat behavior in post editor.',
				'enum'        => [ '', 'reduce_periodicity', 'disable' ],
			],

			// Performance monitoring.
			'performance_monitoring'                    => [
				'type'        => 'integer',
				'description' => 'Enable performance monitoring.',
				'enum'        => [ 0, 1 ],
			],
			'performance_monitoring_schedule_frequency' => [
				'type'        => 'integer',
				'description' => 'Performance monitoring check frequency in seconds.',
				'enum'        => [ 86400, 604800, 2592000 ],
			],

			// Add-ons.
			'varnish_auto_purge'                        => [
				'type'        => 'integer',
				'description' => 'Enable Varnish auto purge.',
				'enum'        => [ 0, 1 ],
			],
			'sucury_waf_cache_sync'                     => [
				'type'        => 'integer',
				'description' => 'Enable Sucuri WAF cache sync.',
				'enum'        => [ 0, 1 ],
			],

			// Analytics.
			'analytics_enabled'                         => [
				'type'        => 'integer',
				'description' => 'Enable anonymous analytics.',
				'enum'        => [ 0, 1 ],
			],

			// Misc.
			'emoji'                                     => [
				'type'        => 'integer',
				'description' => 'Enable emoji support.',
				'enum'        => [ 0, 1 ],
			],
		];

		$properties = array_intersect_key( $schema_definitions, array_flip( $this->allowed_options->get() ) );

		wp_register_ability(
			'wp-rocket/get-options',
			[
				'label'               => __( 'Get WP Rocket options', 'rocket' ),
				'description'         => _x(
					'Retrieves current WP Rocket settings as a flat key-value object, including toggles and array-type options.
Use this when the user asks what is enabled, disabled, or excluded. Do not use it to change settings; use set-option instead.
Always call this before set-option when changing an array-type option, to avoid overwriting existing values. Do not show internal, credential, or read-only keys to the user.
Unless the user asks for another format, present settings as a grouped dashboard with cards for Caching, File Optimisation, Media, CDN, Database, and Heartbeat. Each card should show a group-level badge, setting rows, status pills, impact bars, and plain-language descriptions using the approved colors.',
					'Ability description',
					'rocket'
					),
				'category'            => 'wp-rocket-options',
				'output_schema'       => [
					'type'       => 'object',
					'properties' => $properties,
				],
				'execute_callback'    => [ $this, 'execute' ],
				'permission_callback' => [ $this, 'check_permissions' ],
				'meta'                => [
					'show_in_rest' => true,
					'mcp'          => [
						'public' => true,
					],
					'annotations'  => [
						'readonly'    => true,
						'destructive' => false,
						'idempotent'  => true,
					],
				],
			]
		);
	}

	/**
	 * Checks if the current user has permission to get WP Rocket options.
	 *
	 * @return bool
	 */
	public function check_permissions(): bool {
		return current_user_can( 'rocket_manage_options' );
	}

	/**
	 * Executes the ability to get WP Rocket options, returning only allowlisted options.
	 *
	 * @return array
	 */
	public function execute(): array {
		$this->track_event(
			'MCP Ability Executed',
			[
				'ability' => 'wp-rocket/get-options',
				'context' => 'wp_plugin_mcp',
			]
		);
		$allowed_keys = $this->allowed_options->get();
		$options      = $this->options->get_options();

		return array_intersect_key( $options, array_flip( $allowed_keys ) );
	}
}