<?php

if (!defined('ABSPATH')) {
    exit;
}

require_once AI_SEO_CRO_PATH . 'core/scan-client.php';

class AI_SEO_CRO_Scan_Scheduler {
    const HOOK = 'ai_seo_cro_daily_site_scan';

    public static function init() {
        add_action(self::HOOK, [__CLASS__, 'run']);
        self::schedule();
        foreach (['ai_seo_cro_scan_service_enabled', 'ai_seo_cro_daily_scan_enabled'] as $option) {
            add_action('update_option_' . $option, [__CLASS__, 'schedule']);
            add_action('add_option_' . $option, [__CLASS__, 'schedule']);
            add_action('delete_option_' . $option, [__CLASS__, 'schedule']);
        }
    }

    public static function enabled() {
        return get_option('ai_seo_cro_scan_service_enabled', '0') === '1'
            && get_option('ai_seo_cro_daily_scan_enabled', '0') === '1';
    }

    public static function schedule() {
        if (!self::enabled()) {
            if (wp_next_scheduled(self::HOOK)) {
                self::unschedule();
            }
            return;
        }
        if (!wp_next_scheduled(self::HOOK)) {
            wp_schedule_event(time() + 300, 'daily', self::HOOK);
        }
    }

    public static function unschedule() {
        wp_clear_scheduled_hook(self::HOOK);
    }

    public static function run() {
        // Recheck consent even for cron events queued by older plugin versions.
        if (!self::enabled()) {
            self::unschedule();
            return;
        }
        $client = new AI_SEO_CRO_Scan_Client();
        $latest = $client->list_scans(['limit' => 1, 'offset' => 0, 'startUrl' => home_url('/')]);
        $data = $latest['data'] ?? [];
        $scans = $data['scans'] ?? ($data['data']['scans'] ?? []);
        $scan = is_array($scans) && !empty($scans) ? reset($scans) : [];
        $status = strtoupper((string) ($scan['status'] ?? $scan['state'] ?? ''));

        if (in_array($status, ['QUEUED', 'RUNNING', 'PROCESSING'], true)) {
            update_option('ai_seo_cro_daily_scan_status', ['status' => 'skipped_running', 'checked_at' => current_time('mysql')], false);
            return;
        }

        $result = $client->create_scan('Daily WP Site Audit', home_url('/'), 1000, 6);
        update_option('ai_seo_cro_daily_scan_status', [
            'status' => !empty($result['success']) ? 'started' : 'failed',
            'checked_at' => current_time('mysql'),
            'response_status' => (int) ($result['status'] ?? 0),
        ], false);
    }
}