<?php

namespace Modules\Localization\Concerns;

use Illuminate\Database\Eloquent\Relations\MorphMany;
use Modules\Localization\Models\Locale;
use Modules\Localization\Models\LocalizedContent;

trait HasTranslations
{
    public function translations(): MorphMany
    {
        return $this->morphMany(LocalizedContent::class, 'translatable');
    }

    public function translated(string $field, ?string $locale = null, mixed $fallback = null): mixed
    {
        $locale ??= app()->getLocale();
        $translation = $this->translations->first(fn (LocalizedContent $item): bool => $item->field === $field && $item->locale?->code === $locale);
        if ($translation && filled($translation->value)) {
            return $translation->value;
        }

        return $fallback ?? $this->getAttribute($field);
    }

    public function setTranslation(string $field, string $localeCode, ?string $value, ?int $userId = null): LocalizedContent
    {
        $locale = Locale::query()->where('code', $localeCode)->firstOrFail();

        return $this->translations()->updateOrCreate(
            ['locale_id' => $locale->id, 'field' => $field],
            ['value' => $value, 'updated_by' => $userId]
        );
    }
}