<?php

namespace App\Services\Barobill;

use App\Models\Barobill\HometaxInvoice;
use App\Services\Service;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

/**
 * 홈택스 세금계산서 동기화 서비스 (API 독립 구현)
 *
 * MNG의 HometaxSyncService 패턴을 참고하여 독립 작성.
 * 바로빌 API 응답 데이터를 로컬 DB에 upsert한다.
 */
class HometaxSyncService extends Service
{
    /**
     * API 응답 데이터를 로컬 DB에 동기화
     *
     * @param  array  $invoices  API에서 받은 세금계산서 목록
     * @param  int  $tenantId  테넌트 ID
     * @param  string  $invoiceType  'sales' 또는 'purchase'
     * @return array 동기화 결과
     */
    public function syncInvoices(array $invoices, int $tenantId, string $invoiceType): array
    {
        $result = [
            'inserted' => 0,
            'updated' => 0,
            'failed' => 0,
            'total' => count($invoices),
        ];

        if (empty($invoices)) {
            return $result;
        }

        DB::beginTransaction();

        try {
            foreach ($invoices as $apiData) {
                if (empty($apiData['ntsConfirmNum'])) {
                    $result['failed']++;

                    continue;
                }

                $modelData = HometaxInvoice::fromApiData($apiData, $tenantId, $invoiceType);

                $existing = HometaxInvoice::withoutGlobalScopes()
                    ->where('tenant_id', $tenantId)
                    ->where('nts_confirm_num', $modelData['nts_confirm_num'])
                    ->where('invoice_type', $invoiceType)
                    ->first();

                if ($existing) {
                    $existing->update([
                        'write_date' => $modelData['write_date'],
                        'issue_date' => $modelData['issue_date'],
                        'invoicer_corp_num' => $modelData['invoicer_corp_num'],
                        'invoicer_corp_name' => $modelData['invoicer_corp_name'],
                        'invoicer_ceo_name' => $modelData['invoicer_ceo_name'],
                        'invoicee_corp_num' => $modelData['invoicee_corp_num'],
                        'invoicee_corp_name' => $modelData['invoicee_corp_name'],
                        'invoicee_ceo_name' => $modelData['invoicee_ceo_name'],
                        'supply_amount' => $modelData['supply_amount'],
                        'tax_amount' => $modelData['tax_amount'],
                        'total_amount' => $modelData['total_amount'],
                        'tax_type' => $modelData['tax_type'],
                        'purpose_type' => $modelData['purpose_type'],
                        'item_name' => $modelData['item_name'],
                        'remark' => $modelData['remark'],
                        'synced_at' => now(),
                    ]);
                    $result['updated']++;
                } else {
                    HometaxInvoice::create($modelData);
                    $result['inserted']++;
                }
            }

            DB::commit();

            Log::info('[HometaxSync] 동기화 완료', [
                'tenant_id' => $tenantId,
                'invoice_type' => $invoiceType,
                'result' => $result,
            ]);
        } catch (\Throwable $e) {
            DB::rollBack();
            Log::error('[HometaxSync] 동기화 실패', [
                'tenant_id' => $tenantId,
                'invoice_type' => $invoiceType,
                'error' => $e->getMessage(),
            ]);
            throw $e;
        }

        return $result;
    }

    /**
     * 마지막 동기화 시간 조회
     */
    public function getLastSyncTime(int $tenantId, string $invoiceType): ?string
    {
        $lastSync = HometaxInvoice::withoutGlobalScopes()
            ->where('tenant_id', $tenantId)
            ->where('invoice_type', $invoiceType)
            ->orderByDesc('synced_at')
            ->value('synced_at');

        return $lastSync?->format('Y-m-d H:i:s');
    }
}