<?php
/**
 * ACF, SEO, and cache integration tools (Phase 3).
 *
 * @package AgentdeskSiteOperations
 */

defined( 'ABSPATH' ) || exit;

add_action(
	'agentdesk_register_tools',
	function ( $registry ) {
		$registry->register(
			'integrations_detect',
			array(
				'description' => 'Detect active integrations: ACF, SEO plugins, cache plugins.',
				'domain'      => 'integrations',
				'capability'  => 'manage_options',
				'inputSchema' => array( 'type' => 'object', 'properties' => array() ),
			),
			function () {
				return array(
					'acf'   => class_exists( 'ACF' ),
					'seo'   => array(
						'yoast'     => defined( 'WPSEO_VERSION' ),
						'rank_math' => defined( 'RANK_MATH_VERSION' ),
					),
					'cache' => array(
						'wp_rocket'  => defined( 'WP_ROCKET_VERSION' ),
						'litespeed'  => defined( 'LSCWP_V' ),
						'w3tc'       => defined( 'W3TC' ),
					),
					'forms' => array(
						'wpforms'       => class_exists( 'WPForms' ),
						'gravity_forms' => class_exists( 'GFForms' ),
						'cf7'           => defined( 'WPCF7_VERSION' ),
					),
				);
			}
		);

		if ( class_exists( 'ACF' ) ) {
			$registry->register(
				'acf_field_groups_list',
				array(
					'description' => 'List ACF field groups.',
					'domain'      => 'integrations',
					'capability'  => 'manage_options',
					'inputSchema' => array( 'type' => 'object', 'properties' => array() ),
				),
				function () {
					$groups = function_exists( 'acf_get_field_groups' ) ? acf_get_field_groups() : array();
					$items  = array();
					foreach ( $groups as $group ) {
						$items[] = array(
							'key'   => $group['key'] ?? '',
							'title' => $group['title'] ?? '',
							'id'    => $group['ID'] ?? 0,
						);
					}
					return array( 'field_groups' => $items );
				}
			);

			$registry->register(
				'acf_fields_get',
				array(
					'description' => 'Get ACF field values for a post.',
					'domain'      => 'integrations',
					'capability'  => 'edit_posts',
					'inputSchema' => array(
						'type'       => 'object',
						'properties' => array( 'post_id' => array( 'type' => 'integer' ) ),
						'required'   => array( 'post_id' ),
					),
				),
				function ( $args ) {
					$post_id = absint( $args['post_id'] );

					$allowed = Agentdesk_Security::can_edit_post( $post_id );
					if ( is_wp_error( $allowed ) ) {
						return $allowed;
					}

					if ( ! function_exists( 'get_fields' ) ) {
						return new WP_Error( 'agentdesk_acf_unavailable', 'ACF get_fields not available' );
					}
					return array( 'post_id' => $post_id, 'fields' => get_fields( $post_id ) );
				}
			);

		}

		$registry->register(
			'seo_meta_get',
			array(
				'description' => 'Get SEO meta title and description for a post (Yoast or Rank Math).',
				'domain'      => 'integrations',
				'capability'  => 'edit_posts',
				'inputSchema' => array(
					'type'       => 'object',
					'properties' => array( 'post_id' => array( 'type' => 'integer' ) ),
					'required'   => array( 'post_id' ),
				),
			),
			function ( $args ) {
				$post_id = absint( $args['post_id'] );

				$allowed = Agentdesk_Security::can_edit_post( $post_id );
				if ( is_wp_error( $allowed ) ) {
					return $allowed;
				}

				$meta = array( 'post_id' => $post_id, 'provider' => null );

				if ( defined( 'WPSEO_VERSION' ) ) {
					$meta['provider'] = 'yoast';
					$meta['title']    = get_post_meta( $post_id, '_yoast_wpseo_title', true );
					$meta['description'] = get_post_meta( $post_id, '_yoast_wpseo_metadesc', true );
				} elseif ( defined( 'RANK_MATH_VERSION' ) ) {
					$meta['provider'] = 'rank_math';
					$meta['title']    = get_post_meta( $post_id, 'rank_math_title', true );
					$meta['description'] = get_post_meta( $post_id, 'rank_math_description', true );
				} else {
					return new WP_Error( 'agentdesk_no_seo_plugin', 'No supported SEO plugin detected' );
				}

				return $meta;
			}
		);

		$registry->register(
			'seo_meta_update',
			array(
				'description' => 'Update SEO meta title and description (Yoast or Rank Math).',
				'domain'      => 'integrations',
				'capability'  => 'edit_posts',
				'inputSchema' => array(
					'type'       => 'object',
					'properties' => array(
						'post_id'     => array( 'type' => 'integer' ),
						'title'       => array( 'type' => 'string' ),
						'description' => array( 'type' => 'string' ),
					),
					'required'   => array( 'post_id' ),
				),
			),
			function ( $args ) {
				$post_id = absint( $args['post_id'] );

				$allowed = Agentdesk_Security::can_edit_post( $post_id );
				if ( is_wp_error( $allowed ) ) {
					return $allowed;
				}

				if ( defined( 'WPSEO_VERSION' ) ) {
					if ( isset( $args['title'] ) ) {
						update_post_meta( $post_id, '_yoast_wpseo_title', sanitize_text_field( $args['title'] ) );
					}
					if ( isset( $args['description'] ) ) {
						update_post_meta( $post_id, '_yoast_wpseo_metadesc', sanitize_textarea_field( $args['description'] ) );
					}
					return array( 'updated' => true, 'provider' => 'yoast' );
				}

				if ( defined( 'RANK_MATH_VERSION' ) ) {
					if ( isset( $args['title'] ) ) {
						update_post_meta( $post_id, 'rank_math_title', sanitize_text_field( $args['title'] ) );
					}
					if ( isset( $args['description'] ) ) {
						update_post_meta( $post_id, 'rank_math_description', sanitize_textarea_field( $args['description'] ) );
					}
					return array( 'updated' => true, 'provider' => 'rank_math' );
				}

				return new WP_Error( 'agentdesk_no_seo_plugin', 'No supported SEO plugin detected' );
			}
		);

		$registry->register(
			'cache_flush',
			array(
				'description' => 'Flush cache for detected cache plugin or WordPress object cache.',
				'domain'      => 'integrations',
				'capability'  => 'manage_options',
				'inputSchema' => array( 'type' => 'object', 'properties' => array() ),
			),
			function () {
				$flushed = array();

				if ( function_exists( 'rocket_clean_domain' ) ) {
					rocket_clean_domain();
					$flushed[] = 'wp_rocket';
				}

				if ( class_exists( 'LiteSpeed_Cache_API' ) ) {
					LiteSpeed_Cache_API::purge_all();
					$flushed[] = 'litespeed';
				}

				if ( function_exists( 'w3tc_flush_all' ) ) {
					w3tc_flush_all();
					$flushed[] = 'w3tc';
				}

				wp_cache_flush();
				$flushed[] = 'object_cache';

				return array( 'flushed' => $flushed );
			}
		);
	}
);