<?php

namespace App\Support;

use Illuminate\Support\Facades\DB;

final class AgentOverdueGuard
{
    public static function agentHasOverdueBills(int $agentNodeId): bool
    {
        if ($agentNodeId <= 0) {
            return false;
        }

        return DB::table('settlement_bills')
            ->where('owner_type', 'agent')
            ->where('owner_id', $agentNodeId)
            ->where('status', 'overdue')
            ->where('unpaid_amount', '>', 0)
            ->exists();
    }

    public static function assertAgentMayGrantCredit(int $agentNodeId): void
    {
        if (self::agentHasOverdueBills($agentNodeId)) {
            throw \Illuminate\Validation\ValidationException::withMessages([
                'credit' => ['agent_overdue'],
            ]);
        }
    }
}