<?php

namespace App\Enums;

/**
 * Wiederverwendbares Set farbiger SVG-Titelbild-Platzhalter für
 * Pressemitteilungen ohne eigenes Bild.
 *
 * Die Werte entsprechen den Dateinamen in
 * `public/images/press-release-placeholders/<value>.svg`.
 */
enum PressReleasePlaceholder: string
{
    case GridBlue = '01-grid-blue';
    case GridGreen = '02-grid-green';
    case GridAmber = '03-grid-amber';
    case LinesBlue = '04-lines-blue';
    case LinesGreen = '05-lines-green';
    case LinesAmber = '06-lines-amber';
    case DotsBlue = '07-dots-blue';
    case DotsGreen = '08-dots-green';
    case DotsAmber = '09-dots-amber';
    case WavesBlue = '10-waves-blue';
    case WavesGreen = '11-waves-green';
    case WavesAmber = '12-waves-amber';
    case EditorialBlue = '13-editorial-blue';
    case EditorialGreen = '14-editorial-green';
    case EditorialAmber = '15-editorial-amber';
    case SignalBlue = '16-signal-blue';
    case SignalGreen = '17-signal-green';
    case SignalAmber = '18-signal-amber';

    /**
     * Default-Variante, wenn nichts gesetzt ist.
     */
    public static function default(): self
    {
        return self::GridBlue;
    }

    /**
     * Liefert die Variante zu einem Roh-Wert oder den Default-Fallback.
     */
    public static function fromValueOrDefault(?string $value): self
    {
        return self::tryFrom((string) $value) ?? self::default();
    }

    /**
     * Deterministische Variante aus einem Seed (z. B. PM-ID/Titel), damit
     * dieselbe PM immer denselben Platzhalter bekommt.
     */
    public static function fromSeed(int|string $seed): self
    {
        $cases = self::cases();

        return $cases[abs(crc32((string) $seed)) % count($cases)];
    }

    /**
     * Öffentlicher Asset-Pfad relativ zu `public/`.
     */
    public function path(): string
    {
        return 'images/press-release-placeholders/'.$this->value.'.svg';
    }

    /**
     * Lesbares Label für die UI (Picker-Tooltips etc.).
     */
    public function label(): string
    {
        $pattern = match (true) {
            str_contains($this->value, 'grid') => 'Raster',
            str_contains($this->value, 'lines') => 'Linien',
            str_contains($this->value, 'dots') => 'Punkte',
            str_contains($this->value, 'waves') => 'Wellen',
            str_contains($this->value, 'editorial') => 'Editorial',
            default => 'Signal',
        };

        $color = match (true) {
            str_contains($this->value, 'blue') => 'Blau',
            str_contains($this->value, 'green') => 'Grün',
            default => 'Bernstein',
        };

        return $pattern.' · '.$color;
    }
}