<?php

namespace App\Integrations\Whmcs\Support;

use Illuminate\Support\Facades\DB;
use Illuminate\Support\Str;

/** Slugifies a candidate and appends -N until it's unique in the given column, excluding the row's own legacy_id. */
class SlugUniquifier
{
    public function unique(string $table, string $column, string $candidate, int $legacyId): string
    {
        $base = Str::slug($candidate) ?: 'item';
        $slug = $base;
        $suffix = 1;

        while (DB::table($table)->where($column, $slug)->where('legacy_id', '!=', $legacyId)->exists()) {
            $slug = "{$base}-" . ++$suffix;
        }

        return $slug;
    }
}