<?php

namespace App\Http\Controllers;

use App\Enums\Portal;
use App\Http\Middleware\SetEdition;
use App\Models\MagicLink;
use App\Models\PressRelease;
use App\Support\DomainAssetContext;
use Illuminate\Support\Facades\URL;
use Symfony\Component\HttpFoundation\Response;

class PressReleasePreviewController extends Controller
{
    public function __invoke(string $token): Response
    {
        $magicLink = MagicLink::query()
            ->where('token_hash', hash('sha256', $token))
            ->where('purpose', 'press_release_access')
            ->first();

        if (! $magicLink) {
            return $this->renderError(__('Der Vorschau-Link ist ungültig.'), 404);
        }

        if ($magicLink->expires_at->isPast()) {
            return $this->renderError(__('Der Vorschau-Link ist abgelaufen.'), 410);
        }

        $pressReleaseId = (int) ($magicLink->payload['press_release_id'] ?? 0);

        $pressRelease = $pressReleaseId
            ? PressRelease::withoutGlobalScopes()
                ->with([
                    'company',
                    'user:id,agency_name',
                    'category.translations',
                    'category.parent.translations',
                    'images' => fn ($query) => $query->orderByDesc('is_preview')->orderBy('sort_order'),
                    'contacts',
                ])
                ->find($pressReleaseId)
            : null;

        if (! $pressRelease) {
            return $this->renderError(__('Die Pressemitteilung wurde nicht gefunden.'), 404);
        }

        $domainKey = $this->resolveTargetDomainKey($pressRelease);

        $this->applyTargetPortalPresentation($pressRelease, $domainKey);

        return response()
            ->view('web.release-detail', [
                'release' => $pressRelease,
                'companyReleases' => collect(),
                'relatedReleases' => collect(),
                'isPreview' => true,
                'previewExpiresAt' => $magicLink->expires_at,
                'previewPortalOptions' => $this->previewPortalOptions($pressRelease, $domainKey),
            ])
            ->header('X-Robots-Tag', 'noindex, nofollow');
    }

    /**
     * Zielportal der Vorschau. Bei PMs für beide Portale wählt der optionale
     * Query-Parameter `portal` die Ansicht (Default: presseecho); bei
     * Einzel-Portal-PMs ist das Portal fix.
     */
    private function resolveTargetDomainKey(PressRelease $pressRelease): string
    {
        if ($pressRelease->portal === Portal::Both) {
            $requested = request()->query('portal');

            return in_array($requested, [Portal::Presseecho->value, Portal::Businessportal24->value], true)
                ? $requested
                : Portal::Presseecho->value;
        }

        return $pressRelease->portal === Portal::Businessportal24
            ? Portal::Businessportal24->value
            : Portal::Presseecho->value;
    }

    /**
     * Umschalt-Optionen für den Vorschau-Banner — nur bei PMs, die auf beiden
     * Portalen erscheinen.
     *
     * @return list<array{label: string, url: string, active: bool}>|null
     */
    private function previewPortalOptions(PressRelease $pressRelease, string $activeDomainKey): ?array
    {
        if ($pressRelease->portal !== Portal::Both) {
            return null;
        }

        return collect([Portal::Presseecho->value, Portal::Businessportal24->value])
            ->map(fn (string $domainKey): array => [
                'label' => $domainKey,
                'url' => request()->url().'?portal='.$domainKey,
                'active' => $domainKey === $activeDomainKey,
            ])
            ->all();
    }

    /**
     * Rendert die Vorschau im Look des Zielportals: Theme-/Asset-Konfiguration
     * der Web-Domain anwenden, Links auf das Zielportal zeigen lassen und die
     * Ausgabe-Sprache der PM übernehmen — damit die Vorschau 1:1 der späteren
     * öffentlichen Detailseite entspricht.
     */
    private function applyTargetPortalPresentation(PressRelease $pressRelease, string $domainKey): void
    {
        $domainConfig = DomainAssetContext::applyWebDomainConfig($domainKey);

        URL::forceRootUrl($domainConfig['url'] ?? config('app.url'));

        $language = in_array($pressRelease->language, SetEdition::EDITIONS, true)
            ? $pressRelease->language
            : SetEdition::DEFAULT_EDITION;

        app()->setLocale($language);
        URL::defaults(['edition' => $language]);
    }

    private function renderError(string $message, int $status): Response
    {
        return response()->view('press-release-preview-error', [
            'message' => $message,
        ], $status);
    }
}