<?php

namespace App\Services\Mne;

use Illuminate\Support\Facades\DB;

final class IdentityResolver
{
    public function resolve(int $userId): ?string
    {
        $id = DB::table('mne.identity_links as l')->join('mne.parties as p', 'p.id', '=', 'l.party_id')
            ->join('public.users as u', 'u.id', '=', 'l.user_id')
            ->where('l.user_id', $userId)->where('l.status', 'active')->where('p.party_type', 'person')
            ->whereNull('p.deleted_at')->where('l.valid_from', '<=', now())
            ->where(fn ($q) => $q->whereNull('l.valid_until')->orWhere('l.valid_until', '>', now()))
            ->value('l.party_id');

        return is_string($id) ? $id : null;
    }
}