openclassify/Modules/Favorite/App/Models/FavoriteSearch.php

<?php

namespace Modules\Favorite\App\Models;

use Illuminate\Database\Eloquent\Model;
use Modules\Category\Models\Category;
use Modules\User\App\Models\User;

class FavoriteSearch extends Model
{
    protected $fillable = ['user_id', 'label', 'search_term', 'category_id', 'filters', 'signature'];

    protected $casts = ['filters' => 'array'];

    public function user()
    {
        return $this->belongsTo(User::class);
    }

    public function category()
    {
        return $this->belongsTo(Category::class);
    }

    public static function normalizeFilters(array $filters): array
    {
        return collect($filters)
            ->map(fn ($value) => is_string($value) ? trim($value) : $value)
            ->filter(fn ($value) => $value !== null && $value !== '' && $value !== [])
            ->sortKeys()
            ->all();
    }

    public static function signatureFor(array $filters): string
    {
        $normalized = static::normalizeFilters($filters);
        $payload = json_encode($normalized);

        return hash('sha256', is_string($payload) ? $payload : '');
    }

    public static function labelFor(array $filters, ?string $categoryName = null): string
    {
        $labelParts = [];

        if (! empty($filters['search'])) {
            $labelParts[] = '"'.$filters['search'].'"';
        }

        if (filled($categoryName)) {
            $labelParts[] = $categoryName;
        }

        return $labelParts !== [] ? implode(' · ', $labelParts) : 'Filtered search';
    }
}