<?php

namespace Mintall_Keep\Api;

defined( 'ABSPATH' ) || exit;

use Mintall_Keep\Services\Mintall_Domain;
use Mintall_Keep\Services\Mintall_Pageview;
use Mintall_Keep\Services\Mintall_Products;

/**
 * REST endpoint for setup checklist status.
 *
 * Returns completion state for each onboarding step so the frontend
 * can render a Shopify-style setup checklist on the dashboard.
 */
class REST_Setup_Status extends REST_Controller {

	public function register_routes() {
		register_rest_route(
			self::NAMESPACE,
			'/setup-status',
			[
				'methods'             => 'GET',
				'callback'            => [ $this, 'get_status' ],
				'permission_callback' => [ $this, 'check_permission' ],
			]
		);

		register_rest_route(
			self::NAMESPACE,
			'/setup-status/dismiss',
			[
				'methods'             => 'POST',
				'callback'            => [ $this, 'dismiss' ],
				'permission_callback' => [ $this, 'check_permission' ],
			]
		);
	}

	/**
	 * GET /mintall/v1/setup-status
	 */
	public function get_status() {
		$has_protected = (bool) get_posts(
			[
				'post_type'      => 'product',
				'post_status'    => 'any',
				'meta_key'       => '_mintall_asset_id',
				'meta_compare'   => 'EXISTS',
				'fields'         => 'ids',
				'posts_per_page' => 1,
			]
		);

		$has_synced_products = false;
		$has_visible         = false;
		$domain_status       = null;
		$domain_registered   = null;

		$api_key = $this->get_api_key();
		if ( ! is_wp_error( $api_key ) ) {
			$product_ids = wc_get_products(
				[
					'status' => 'publish',
					'limit'  => 100,
					'return' => 'ids',
				]
			);

			if ( ! empty( $product_ids ) ) {
				$external_ids = array_map( 'strval', $product_ids );
				$result       = Mintall_Products::lookup( $api_key, $external_ids );
				if ( ! is_wp_error( $result ) && is_array( $result ) ) {
					$has_synced_products = ! empty( $result );
					foreach ( $result as $row ) {
						if ( ! empty( $row['visible_at'] ) ) {
							$has_visible = true;
							break;
						}
					}
				}
			}

			// Domain verification status. NOT_STARTED is a normal initial state; treat as null.
			$domain_response = Mintall_Domain::verify( $api_key );
			if ( ! is_wp_error( $domain_response ) ) {
				$domain_status     = $domain_response['status'] ?? null;
				$domain_registered = $domain_response['domain'] ?? null;
			}
		}

		$current_site  = $this->current_site_info();
		$verify_domain = 'verified' === $domain_status || ! $current_site['host_is_verifiable'];

		$dismissed = get_option( 'mintall_keep_setup_dismissed', false );

		return new \WP_REST_Response(
			[
				'steps'                      => [
					'protect_product'   => $has_protected,
					'sync_products'     => $has_synced_products,
					'enable_visibility' => $has_visible,
					'verify_domain'     => $verify_domain,
				],
				'dismissed'                  => (bool) $dismissed,
				'auto_protect'               => (bool) get_option( 'mintall_keep_auto_protect', false ),
				'visibility_on_protect'      => (bool) get_option( 'mintall_keep_visibility_on_protect', false ),
				'domain_verification_status' => $domain_status,
				'domain_verification_domain' => $domain_registered,
				'current_site_host'          => $current_site['current_site_host'],
				'host_is_verifiable'         => $current_site['host_is_verifiable'],
				'page_view_capture'          => Mintall_Pageview::is_enabled(),
				'page_view_capture_decided'  => Mintall_Pageview::is_decided(),
			]
		);
	}

	private function current_site_info() {
		$host = wp_parse_url( home_url(), PHP_URL_HOST );
		$host = is_string( $host ) ? strtolower( $host ) : '';
		return [
			'current_site_host'  => $host ?: null,
			'host_is_verifiable' => $host ? $this->is_verifiable_host( $host ) : false,
		];
	}

	private function is_verifiable_host( $host ) {
		if ( in_array( $host, [ 'localhost', '127.0.0.1', '::1' ], true ) ) {
			return false;
		}
		if ( preg_match( '/\.(local|test|localhost|internal|lan)$/i', $host ) ) {
			return false;
		}
		if ( filter_var( $host, FILTER_VALIDATE_IP ) ) {
			return false;
		}
		if ( strpos( $host, '.' ) === false ) {
			return false;
		}
		return true;
	}

	/**
	 * POST /mintall/v1/setup-status/dismiss
	 */
	public function dismiss() {
		update_option( 'mintall_keep_setup_dismissed', true );

		return new \WP_REST_Response( [ 'success' => true ] );
	}
}