<?php

namespace App\Repositories\Payments;

use App\Models\Payments\GcPinOrder;
use Illuminate\Support\Facades\DB;

final class GcPinOrderRepository
{
    public function findByOidForUpdate(string $oid): ?GcPinOrder
    {
        return GcPinOrder::query()
            ->where('oid', $oid)
            ->lockForUpdate()
            ->first();
    }

    public function findByOid(string $oid): ?GcPinOrder
    {
        return GcPinOrder::query()->where('oid', $oid)->first();
    }

    public function markMethod(GcPinOrder $order, string $method): void
    {
        $order->pay_method = $method;
        $order->save();
    }

    public function markVactIssued(GcPinOrder $order, string $tid, array $issued): void
    {
        if ($order->stat_pay === 'p') return; // 이미 paid면 무시(멱등)
        $order->stat_pay = 'w';
        $order->pg_tid = $tid ?: $order->pg_tid;
        $order->ret_code = (string)($issued['RETURNCODE'] ?? '0000');
        $order->ret_msg  = (string)($issued['RETURNMSG'] ?? '');
        $order->pay_data = $this->jsonSafe(array_merge($order->pay_data ?? [], ['vact'=>$issued]));
        $order->ret_data = $this->jsonSafe(array_merge($order->ret_data ?? [], ['vact_issue'=>$issued]));
        $order->save();
    }

    public function markPaid(GcPinOrder $order, string $tid, string $code, string $msg, array $payload): void
    {
        if ($order->stat_pay === 'p') return; // 멱등

        $order->stat_pay = 'p';
        $order->paid_at = now();
        $order->pg_tid = $tid ?: $order->pg_tid;
        $order->ret_code = $code;
        $order->ret_msg = $msg;

        $payload = $this->jsonSafe($payload);
        $merged = array_merge($order->ret_data ?? [], $payload);
        $order->ret_data = $this->jsonSafe($merged);

        $order->save();
    }

    public function markCancelled(GcPinOrder $order, string $code, string $msg, array $payload = []): void
    {
        if ($order->stat_pay === 'p') return;
        $order->stat_pay = 'c';
        $order->cancelled_at = now();
        $order->ret_code = $code;
        $order->ret_msg = $msg;
        $payload = $this->jsonSafe($payload);
        $order->ret_data = $this->jsonSafe(array_merge($order->ret_data ?? [], $payload));

        $order->save();
    }

    public function markFailed(GcPinOrder $order, string $code, string $msg, array $payload = []): void
    {
        if ($order->stat_pay === 'p') return;
        $order->stat_pay = 'f';
        $order->ret_code = $code;
        $order->ret_msg = $msg;
        $payload = $this->jsonSafe($payload);
        $order->ret_data = $this->jsonSafe(array_merge($order->ret_data ?? [], $payload));
        $order->save();
    }

    private function jsonSafe(mixed $v): mixed
    {
        if (is_array($v)) {
            foreach ($v as $k => $vv) $v[$k] = $this->jsonSafe($vv);
            return $v;
        }
        if (is_object($v)) return $this->jsonSafe((array)$v);

        if (is_string($v)) {
            if (function_exists('mb_check_encoding') && mb_check_encoding($v, 'UTF-8')) return $v;
            $out = @iconv('EUC-KR', 'UTF-8//IGNORE', $v);
            if ($out === false) $out = '';
            if (function_exists('mb_check_encoding') && !mb_check_encoding($out, 'UTF-8')) {
                $out = @iconv('UTF-8', 'UTF-8//IGNORE', $out) ?: '';
            }
            return $out;
        }
        return $v;
    }
}