<?php

namespace DaftPlug\Rankify\Admin;

if ( !defined( 'ABSPATH' ) ) {
    exit;
}
class Settings {
    public function __construct() {
        // Init default settings
        $defaultSettings = [
            'metaTitleTemplate'                 => '%%title%% %%sep%% %%sitename%%',
            'metaTitleSeparator'                => '-',
            'metaDescriptionTemplate'           => '%%excerpt%%',
            'xmlSitemap'                        => 'on',
            'xmlSitemapPostTypes'               => [
                'post' => 'on',
                'page' => 'on',
            ],
            'xmlSitemapTaxonomies'              => [
                'category' => 'on',
            ],
            'xmlSitemapExcludeNoindex'          => 'on',
            'xmlSitemapImages'                  => 'on',
            'robotsTxt'                         => 'on',
            'robotsTxtContent'                  => '',
            'llmsTxtPostTypes'                  => ['page', 'post'],
            'llmsTxtExcludeNoindex'             => 'on',
            'schemaMarkup'                      => 'on',
            'schemaSiteType'                    => 'organization',
            'schemaSiteName'                    => get_bloginfo( 'name' ),
            'schemaSiteLogo'                    => '',
            'schemaSitelinksSearch'             => 'on',
            'openGraph'                         => 'on',
            'twitterCards'                      => 'on',
            'socialFallbackImage'               => '',
            'socialTwitterSite'                 => '',
            'socialFacebook'                    => '',
            'socialInstagram'                   => '',
            'socialLinkedin'                    => '',
            'socialYoutube'                     => '',
            'socialPinterest'                   => '',
            'verifyGoogle'                      => '',
            'verifyBing'                        => '',
            'verifyYandex'                      => '',
            'verifyPinterest'                   => '',
            'verifyBaidu'                       => '',
            'mediaPages'                        => 'off',
            'disableAuthorArchivesSingleAuthor' => 'off',
            'breadcrumbs'                       => 'off',
            'breadcrumbsSeparator'              => '/',
            'breadcrumbsHomeLabel'              => '',
            'llmsTxt'                           => 'on',
            'aiCrawlersAllow'                   => 'on',
            'aiCrawlers'                        => [],
            'redirects'                         => 'on',
            'redirects404Monitor'               => 'on',
            'redirects404Retention'             => '30',
            'redirects404Ignore'                => '',
            'reuseExistingSeo'                  => 'on',
            'aeoCitationTracking'               => 'on',
            'emailNotificationsRecipient'       => '',
            'notifyDigest'                      => 'off',
            'notifyDigestFrequency'             => 'weekly',
            'notifyCritical'                    => 'off',
            'notify404'                         => 'off',
            'notify404Threshold'                => 10,
        ];
        // Get existing settings
        $existingSettings = get_option( 'rankify_settings', [] );
        // Add default settings (only adds if option doesn't exist)
        add_option( 'rankify_settings', $defaultSettings );
        // Backfill defaults a site installed before this version has never seen.
        // The update handler below only runs when WordPress's own updater fired,
        // so without this a newly added setting stays missing (and reads as false)
        // until the user happens to save the settings form. Re-read the option
        // rather than reusing $existingSettings — the premium merge above may
        // already have written to it.
        $currentSettings = get_option( 'rankify_settings', [] );
        $missingSettings = array_diff_key( $defaultSettings, $currentSettings );
        if ( !empty( $currentSettings ) && !empty( $missingSettings ) ) {
            update_option( 'rankify_settings', array_merge( $currentSettings, $missingSettings ) );
        }
        // Handle plugin update - add any new default settings that don't exist yet
        if ( get_transient( 'rankify_updated' ) ) {
            $currentSettings = get_option( 'rankify_settings', [] );
            $allDefaults = ( \DaftPlug\Rankify\rankify_pro()->is__premium_only() ? array_merge( $defaultSettings, $premiumSettings ?? [] ) : $defaultSettings );
            // Only add settings that don't exist, preserving user's existing values
            $newSettings = array_diff_key( $allDefaults, $currentSettings );
            if ( !empty( $newSettings ) ) {
                update_option( 'rankify_settings', array_merge( $currentSettings, $newSettings ) );
            }
            delete_transient( 'rankify_updated' );
        }
        // The overview's figures are derived from post content and from these
        // settings, so both have to invalidate the cached snapshot.
        add_action( 'save_post', [SiteAudit::class, 'flush'] );
        add_action( 'deleted_post', [SiteAudit::class, 'flush'] );
        add_action( 'rankify_settings_update:after', [SiteAudit::class, 'flush'] );
        add_action(
            'upgrader_process_complete',
            [$this, 'onUpdate'],
            10,
            2
        );
        \DaftPlug\Rankify\rankify_pro()->add_action( 'after_uninstall', [$this, 'onUninstall'] );
        add_action( 'rest_api_init', [$this, 'registerRoutes'] );
    }

    public function onUpdate( $upgraderObject, $options ) {
        if ( $options['action'] == 'update' && $options['type'] == 'plugin' && isset( $options['plugins'] ) ) {
            foreach ( $options['plugins'] as $plugin ) {
                if ( $plugin == RANKIFY_BASENAME ) {
                    set_transient( 'rankify_updated', 'yes', 3600 );
                }
            }
        }
    }

    public function onUninstall() {
        delete_option( 'rankify_settings' );
        delete_option( 'rankify_gsc_connection' );
        delete_option( 'rankify_crawler_beacon_seen' );
        delete_option( 'rankify_crawler_tokens' );
    }

    public function registerRoutes() {
        \DaftPlug\Rankify\Helpers\Utils::registerRestRoute( '/settings', [
            'methods'             => 'PUT',
            'callback'            => [$this, 'updateSettings'],
            'permission_callback' => function () {
                return current_user_can( 'manage_options' );
            },
        ] );
    }

    public function updateSettings( \WP_REST_Request $request ) {
        if ( !wp_verify_nonce( $request->get_header( 'X-WP-Nonce' ), 'wp_rest' ) ) {
            return new \WP_Error('invalid_nonce', 'Invalid nonce', [
                'status' => 403,
            ]);
        }
        $newSettings = $request->get_param( 'settings' );
        if ( !is_array( $newSettings ) ) {
            return new \WP_Error('invalid_settings', 'Invalid settings format', [
                'status' => 400,
            ]);
        }
        $currentSettings = get_option( 'rankify_settings', [] );
        $settings = wp_parse_args( $newSettings, $currentSettings );
        do_action( 'rankify_settings_update:before', $settings );
        // update_option() returns false both on failure AND when the value is unchanged.
        // Always fire the after action and return success since settings are in the desired state.
        update_option( 'rankify_settings', $settings );
        do_action( 'rankify_settings_update:after', $settings );
        return new \WP_REST_Response([
            'status' => 'success',
        ], 200);
    }

}