<?php

declare(strict_types=1);

namespace GeoLens;

use GeoLens\Admin\AdminLoader;
use GeoLens\Admin\AjaxHandler;
use GeoLens\Admin\Pages\DashboardPage;
use GeoLens\Admin\Pages\PricingPage;
use GeoLens\Admin\Pages\SettingsPage;
use GeoLens\Api\Client;
use GeoLens\Collector\SchemaCollector;
use GeoLens\Conflict\ConflictDetector;
use GeoLens\License\LicenseManager;
use GeoLens\License\LicenseManagerFactory;
use GeoLens\License\LicenseStorage;
use GeoLens\Schema\Injector;

class Bootstrap
{
    private static bool $initialized = false;
    private static ?ConflictDetector $conflictDetector = null;

    public static function init(): void
    {
        if (self::$initialized) {
            return;
        }

        self::$initialized = true;

        // 自架版自帶翻譯檔，要自己載入；WordPress.org 版的翻譯由 translate.wordpress.org
        // 提供、核心自動載入（4.6+），所以 --target=org 連同 .po/.mo 一起拿掉。

        // 自家更新器**只在自架版**註冊。WordPress.org 版交給核心的目錄更新機制 ——
        // 兩邊掛的是同一組更新 filter、slug 同為 `geolens`，併存會互相蓋掉
        // （見 geolens.php 的 GEOLENS_SELF_HOSTED 註解）。
        // --target=org 會刪掉 begin／end 標記之間的整段（連同 src/Update/），
        // 審核看到的 .org 版裡沒有任何更新器的痕跡；常數與 class_exists 是保險。

        self::$conflictDetector = new ConflictDetector();

        self::registerCronHooks();
        self::registerFrontendHooks();

        if (is_admin()) {
            self::registerAdminHooks();
        }
    }

    private static function registerCronHooks(): void
    {
        add_action('geolens_daily_license_check', [self::class, 'handleDailyLicenseCheck']);

        // 內容發布後補掃一次，讓新頁面立刻有 Schema（不必等隔天排程）。
        // ⚠️ 必須註冊在 is_admin() 之外：`transition_post_status` 也會由 REST／WP-CLI 觸發，
        // 而它排出的 cron 事件本身就跑在非 admin 的情境。
        (new \GeoLens\Scan\PublishScanScheduler())->register();
    }

    private static function registerFrontendHooks(): void
    {
        // --- Sprint 4: Schema Injection + Conflict Detection ---
        // Three-tier strategy: Audit (always) → Advisory (conflicts) → Inject (no conflicts)

        $conflictDetector = self::$conflictDetector;

        // Frontend: Schema injection
        if (!is_admin()) {
            $apiKey = LicenseStorage::getApiKey();
            if ($apiKey) {
                $client = new Client($apiKey);
                $injector = new Injector($client, $conflictDetector, new SchemaCollector());
                $injector->register();

                // Clear all Schema cache after scan completes (ADR-012 trigger 3)
                add_action('geolens_scan_completed', static function () use ($injector): void {
                    $injector->clearAllCache();
                });
            }
        }

        // Expose ConflictDetector status to Admin Dashboard (Sprint 5)
        add_filter('geolens_conflict_status', static function () use ($conflictDetector): array {
            return $conflictDetector->getStatusSummary();
        });
    }

    private static function registerAdminHooks(): void
    {
        // --- Sprint 5: Admin UI ---
        $apiKey = LicenseStorage::getApiKey();

        // Admin Pages
        $dashboardPage = new DashboardPage();
        $pricingPage = new PricingPage();
        $settingsPage = new SettingsPage();
        $visibilityPage = new \GeoLens\Admin\Pages\VisibilityPage();

        // AdminLoader (menu + asset enqueue)
        $adminLoader = new AdminLoader($dashboardPage, $pricingPage, $settingsPage, $visibilityPage);
        $adminLoader->register();

        // AjaxHandler (unified AJAX entry point)
        //
        // 未授權時沒有金鑰、無法建立 Client（Client 拒絕空字串），故傳 null；
        // AjaxHandler::register() 只會註冊「取得金鑰」用的兩個 hook
        // （register_free / activate_license），其餘需授權的操作不註冊。
        $client = $apiKey ? new Client($apiKey) : null;
        $licenseManager = $client ? new LicenseManager($client) : null;

        $ajaxHandler = new AjaxHandler(
            $client,
            $licenseManager,
            self::$conflictDetector,
            new LicenseManagerFactory()
        );
        $ajaxHandler->register();
    }

    public static function handleDailyLicenseCheck(): void
    {
        $apiKey = LicenseStorage::getApiKey();

        if (! $apiKey) {
            return;
        }

        $client = new Client($apiKey);
        $licenseManager = new LicenseManager($client);
        $result = $licenseManager->verify(forceRefresh: true);

        if (is_wp_error($result)) {
            // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
            error_log('[GeoLens] Daily license check failed: ' . $result->get_error_message());
        }
    }

    /**
     * Reset state for testing purposes.
     *
     * @internal
     */
    public static function reset(): void
    {
        self::$initialized = false;
        self::$conflictDetector = null;
    }
}