<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Enums\EventStatus;
use App\Enums\ParticipantStatus;
use App\Enums\UserRole;
use App\Models\ActivityLog;
use App\Models\Event;
use App\Models\Invitation;
use App\Models\Player;
use App\Models\User;
use App\Services\SupportApiService;
use Illuminate\Support\Facades\Cache;
use Illuminate\View\View;

class DashboardController extends Controller
{
    public function index(): View
    {
        $stats = [
            'users' => User::count(),
            'players' => Player::count(),
            'upcoming_events' => Event::where('status', EventStatus::Published)
                ->where('start_at', '>=', now())->count(),
            'open_invitations' => Invitation::whereNull('accepted_at')
                ->where('expires_at', '>', now())->count(),
        ];

        // Events mit vielen offenen Rückmeldungen
        $eventsWithOpenResponses = Event::with('team')
            ->where('status', EventStatus::Published)
            ->where('start_at', '>=', now())
            ->withCount(['participants as open_count' => function ($q) {
                $q->where('status', ParticipantStatus::Unknown);
            }])
            ->orderByDesc('open_count')
            ->limit(10)
            ->get()
            ->filter(fn ($e) => $e->open_count > 0)
            ->take(5);

        // DSGVO: User mit hochgeladenem Dokument, aber ohne Admin-Bestätigung
        $pendingDsgvoUsers = User::where('role', UserRole::User)
            ->whereNotNull('dsgvo_consent_file')
            ->whereNull('dsgvo_accepted_at')
            ->orderBy('name')
            ->get();

        // Letzte 10 DSGVO-Ereignisse
        $dsgvoEvents = ActivityLog::with('user')
            ->whereIn('action', [
                'dsgvo_consent_uploaded',
                'dsgvo_consent_confirmed',
                'dsgvo_consent_revoked',
                'dsgvo_consent_removed',
                'dsgvo_consent_rejected',
                'account_self_deleted',
                'child_auto_deactivated',
            ])
            ->latest('created_at')
            ->limit(10)
            ->get();

        // Update-Check (cached 24h, nur wenn registriert)
        $supportService = app(SupportApiService::class);
        if ($supportService->isRegistered()) {
            $supportService->checkForUpdate();
        }
        $hasUpdate = $supportService->hasUpdate();
        $updateVersion = $hasUpdate
            ? (Cache::get('support.update_check')['latest_version'] ?? null)
            : null;

        return view('admin.dashboard', compact(
            'stats', 'eventsWithOpenResponses', 'pendingDsgvoUsers', 'dsgvoEvents',
            'hasUpdate', 'updateVersion'
        ));
    }
}