<?php

namespace App\Livewire\Web\Components\Sections;

use App\Models\CmsArticle;
use Livewire\Component;

class MagazinDetail extends Component
{
    public $slug;

    public $article;

    public $relatedArticles;

    public $content;

    /** Rueckweg zur Magazinliste der Welt, zu der der Beitrag gehoert. */
    public string $listUrl = '';

    public function mount($slug)
    {
        $this->slug = (string) $slug;
        $this->loadArticle();
        $this->listUrl = $this->articleWorld() === CmsArticle::WORLD_IMMOBILIEN
            ? route('immobilien.magazin')
            : route('magazin');
        $this->loadRelatedArticles();
        $this->loadThemeContent();
    }

    private function articleWorld(): string
    {
        return (string) ($this->article['world'] ?? CmsArticle::WORLD_INTERIOR);
    }

    private function loadArticle()
    {
        $articles = $this->getArticlesData();

        // Unbekannte Slugs haben frueher stillschweigend Artikel 1 ausgeliefert – mit Status 200.
        // Das erzeugt Duplicate Content unter beliebig vielen URLs.
        abort_unless(isset($articles[$this->slug]), 404);

        $this->article = $articles[$this->slug];
    }

    private function loadRelatedArticles()
    {
        $this->relatedArticles = collect($this->getArticlesData())
            ->filter(fn (array $article) => ($article['world'] ?? CmsArticle::WORLD_INTERIOR) === $this->articleWorld())
            ->reject(fn (array $article, string $slug) => $slug === $this->slug)
            ->take(2)
            ->values()
            ->toArray();
    }

    private function loadThemeContent()
    {
        $this->content = cms_theme_section('magazin_detail');
    }

    /** @var array<string, array<string, mixed>>|null */
    private ?array $articlesCache = null;

    /**
     * Wird beim Rendern zweimal gebraucht (Artikel + verwandte Artikel) – deshalb gemerkt,
     * damit die Detailseite nur eine Abfrage auslöst.
     *
     * @return array<string, array<string, mixed>>
     */
    private function getArticlesData(): array
    {
        return $this->articlesCache ??= CmsArticle::forFrontend();
    }

    public function render()
    {
        return view('livewire.web.components.sections.magazin-detail', [
            'article' => $this->article,
            'relatedArticles' => $this->relatedArticles,
        ]);
    }
}