<?php

namespace App\Helpers;

use Cocur\Slugify\Slugify;
use Illuminate\Support\Str;

class SlugHelper
{
    /**
     * Generate a slug from a title, supporting Japanese and other non-ASCII characters
     *
     * @param string $title
     * @param string|null $fallback Optional fallback if slug is empty
     * @return string
     */
    public static function generate(string $title, ?string $fallback = null): string
    {
        $slugify = new Slugify(['lowercase' => true]);

        // Try to generate slug with cocur/slugify
        $slug = $slugify->slugify($title);

        // If slug is empty (happens with pure Japanese/Chinese characters),
        // use fallback or generate a unique identifier
        if (empty($slug)) {
            if ($fallback) {
                $slug = $fallback;
            } else {
                // Use timestamp + random string for unique slug
                $slug = date('YmdHis') . '-' . Str::random(8);
            }
        }

        return $slug;
    }
}