<?php

namespace App\Http\Controllers\Api\Tenant;

use App\Http\Controllers\Controller;
use App\Models\Tenant;
use App\Support\TenantAuth;
use App\Support\TenantOnboardingState;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Arr;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Log;
use Symfony\Component\HttpFoundation\Response;

class OnboardingController extends Controller
{
    public function show(Request $request): JsonResponse
    {
        $tenant = $this->resolveTenant($request);

        if (! $tenant) {
            return response()->json([
                'error' => 'tenant_context_missing',
                'message' => 'Der Tenant-Kontext konnte nicht ermittelt werden.',
            ], Response::HTTP_UNAUTHORIZED);
        }

        $status = TenantOnboardingState::status($tenant);
        $settings = $tenant->settings ?? [];

        return response()->json([
            'steps' => [
                'admin_app_opened_at' => Arr::get($settings, 'onboarding.admin_app_opened_at'),
                'primary_event_id' => Arr::get($settings, 'onboarding.primary_event_id'),
                'selected_packages' => Arr::get($settings, 'onboarding.selected_packages'),
                'branding_completed' => (bool) ($status['palette'] ?? false),
                'tasks_configured' => (bool) ($status['packages'] ?? false),
                'event_created' => (bool) ($status['event'] ?? false),
                'invite_created' => (bool) ($status['invite'] ?? false),
            ],
        ]);
    }

    public function store(Request $request): JsonResponse
    {
        $tenant = $this->resolveTenant($request);

        if (! $tenant) {
            return response()->json([
                'error' => 'tenant_context_missing',
                'message' => 'Der Tenant-Kontext konnte nicht ermittelt werden.',
            ], Response::HTTP_UNAUTHORIZED);
        }

        $payload = $request->validate([
            'step' => ['required', 'string'],
            'meta' => ['array'],
        ]);

        $step = $payload['step'];
        $meta = $payload['meta'] ?? [];

        $settings = $tenant->settings ?? [];

        switch ($step) {
            case 'admin_app_opened':
                Arr::set($settings, 'onboarding.admin_app_opened_at', Carbon::now()->toIso8601String());
                break;

            case 'event_created':
                Arr::set($settings, 'onboarding.primary_event_id', Arr::get($meta, 'event_id'));
                break;

            case 'package_selected':
                Arr::set($settings, 'onboarding.selected_packages', Arr::get($meta, 'packages'));
                break;

            case 'branding_configured':
                Arr::set($settings, 'onboarding.branding_set', true);
                break;

            case 'invite_created':
                Arr::set($settings, 'onboarding.invite_created_at', Carbon::now()->toIso8601String());
                break;

            case 'completed':
                TenantOnboardingState::markCompleted($tenant, $meta);
                break;

            default:
                Log::info('[TenantOnboarding] Unbekannter Schritt gemeldet', [
                    'tenant_id' => $tenant->id,
                    'step' => $step,
                ]);
        }

        if ($step !== 'completed') {
            $tenant->forceFill(['settings' => $settings])->save();
        }

        return response()->json([
            'message' => 'Onboarding-Schritt aktualisiert.',
        ]);
    }

    private function resolveTenant(Request $request): ?Tenant
    {
        try {
            $tenantId = $request->attributes->get('tenant_id');

            if ($tenantId) {
                return Tenant::query()->find($tenantId);
            }

            return TenantAuth::resolveTenant($request);
        } catch (\Throwable $exception) {
            Log::warning('[TenantOnboarding] Tenant konnte nicht ermittelt werden', [
                'error' => $exception->getMessage(),
            ]);

            return null;
        }
    }
}