<?php

namespace App\Services;

use CodeIgniter\CLI\CLI;
use App\Libraries\NaverApiClient;
use App\Models\Entities\VrfcReqModel;
use App\Models\Entities\V2stdailyModel;
use App\Models\Entities\NaverRawStagingModel;
use App\Models\Entities\ReceiptModel;
use App\Models\Entities\ResultModel;
use App\Services\StatusService; // 추가
use Exception;

class NaverService
{
    protected $db;
    protected $naverClient, $VrfcReqModel, $V2stdailyModel, $statusService, $rawStagingModel, $receiptModel, $resultModel;

    public function __construct()
    {
        $this->db = \Config\Database::connect();

        $this->naverClient = new NaverApiClient();
        $this->VrfcReqModel = model(VrfcReqModel::class);
        $this->V2stdailyModel = model(V2stdailyModel::class);
        $this->rawStagingModel = model(NaverRawStagingModel::class);

        $this->receiptModel = model(ReceiptModel::class);
        $this->resultModel = model(ResultModel::class);
        $this->statusService = new StatusService(); // 인스턴스 생성

        helper('log'); 
    }

    /**
     * 메인 프로세스: 요청 타입에 따른 분기 처리
     */
    public function processArticle(array $payload)
    {
        $articleNumber = $payload['articleNumber'];
        $requestType = $payload['requestType'] ?? '';

        // 1. 네이버 API 호출
        $response = $this->naverClient->getArticleInfo($articleNumber);
        if (!$response || $response['code'] !== 'success') {
            throw new \Exception("네이버 API 응답 에러: $articleNumber");
        }

        $rawData = $response['data'];
        $vType = $rawData['verificationTypeCode'] ?? '';

        // 2. [Staging] 원본 DB 저장 (JSON 타입 컬럼 활용)
        $this->rawStagingModel->insert([
            'atcl_no'           => $articleNumber,
            'verification_type' => $vType,
            'request_type'      => $requestType,
            'raw_json'          => $rawData // 모델에서 json_encode 처리됨
        ]);

        // 3. 타입별 분기 처리
        if ($vType === 'S') {
            // [Type S] 현장확인 응답 처리 (A01 등)
            return $this->processTypeS($articleNumber, $rawData, $payload);
        } else {
            // [Type D/기타] 서류확인/비공동 처리 (D04, F01 등)
            return $this->processTypeV2($articleNumber, $rawData, $payload);
        }

        // $vrfcParams = $this->mapToDatabaseParams($response['data'], $payload);
        // write_custom_log("PROCESS_START | Type: $requestType | Atcl: $articleNumber", 'INFO', 'service');

        // switch ($requestType) {
        //     case 'REG': // 신규 등록
        //         $vr_sq = $this->insertVrfcReq($articleNumber, $vrfcParams);
        //         if ($vr_sq) $this->V2stdailyModel->set_v2_st_daily(null, $vrfcParams['cpid'], $vrfcParams['vrfc_type'] . '0103', '1', 'add');
        //         break;

        //     case 'MOD': // 수정
        //         $vr_sq = $this->updateVrfcReq($articleNumber, $vrfcParams);
        //         if ($vr_sq) $this->V2stdailyModel->set_v2_st_daily(null, $vrfcParams['cpid'], $vrfcParams['vrfc_type'] . '0102', '1', 'add');
        //         break;

        //     case 'CNC': // 취소
        //         $vr_sq = $this->deleteVrfcReq($articleNumber, $vrfcParams);
        //         if ($vr_sq) $this->V2stdailyModel->set_v2_st_daily(null, $vrfcParams['cpid'], 'A0101', '1', 'add');
        //         break;

        //     // case 'FIN': // 완료
        //     //     $vr_sq = $this->finVrfcReq($articleNumber, $vrfcParams);
        //     //     if ($vr_sq) $this->V2stdailyModel->set_v2_st_daily(null, $vrfcParams['cpid'], 'A0101', '1', 'add');
        //     //     break;

        //     default:
        //         throw new \Exception("알 수 없는 requestType: $requestType");
        // }

        // return ['vr_sq' => $vr_sq, 'articleNumber' => $articleNumber];
    }


    /**
     * [Type S] 현장확인 응답 처리 (A01 등)
     */
    private function processTypeS($articleNumber, $rawData, $payload)
{
    $now = date('Y-m-d H:i:s');
    
    // 시작 전 트랜잭션
    $this->db->transStart();

    try {
        // 1. receipt 데이터 준비
        $receiptData = [
            'comp_sq'           => '2', 
            'rcpt_rating'       => '3',
            'rcpt_key'          => $rawData['cpArticleNumber'] ?? '',
            'rcpt_atclno'       => $articleNumber,
            'rcpt_type'         => 'C',
            'rcpt_product'      => $rawData['realEstateTypeCode'] ?? null,
            'rcpt_product_nm'   => $rawData['realEstateType'] ?? null,
            'rcpt_product_info1'=> $rawData['tradeType'] ?? null,
            'rcpt_product_info2'=> $rawData['price']['dealAmount'] ?? '0',
            'rcpt_product_info3'=> $rawData['price']['leaseAmount'] ?? '0',
            'rcpt_living_yn'   => ($rawData['site']['isRegistration'] ?? false) ? 'Y' : 'N',
            'rcpt_office'       => $rawData['realtor']['realtorName'] ?? null,
            'rcpt_agent'        => $rawData['realtor']['realtorName'] ?? null,
            'rcpt_sido'         => mb_substr($rawData['address']['legalDivision']['cityNumber'] ?? '', 0, 5),
            'rcpt_gugun'        => mb_substr($rawData['address']['legalDivision']['divisionNumber'] ?? '', 0, 10),
            'rcpt_dong'         => $rawData['address']['legalDivision']['sectorNumber'] ?? null,
            'rcpt_hscp_nm'      => $rawData['address']['complexName'] ?? null,
            'rcpt_hscp_no'    => $rawData['address']['complexNumber'] ?? null,
            'rcpt_dtl_addr'     => trim(($rawData['address']['legalDivision']['legalDivisionAddress'] ?? '') . $rawData['address']['buildingName'] . '동 ' . ($rawData['address']['hoName'] ?? '') . '호'),
            'rcpt_etc_addr'     => $rawData['address']['hoName'] ?? null,
            'rcpt_floor'        => $rawData['floor']['correspondenceFloorCount'] ?? null,
            'rcpt_floor2'       => $rawData['floor']['totalFloorCount'] ?? null,
            'rcpt_tm'           => $now,
            'rcpt_stat'         => '100000', 
            'rcpt_x'            => $rawData['address']['longitude'] ?? null,
            'rcpt_y'            => $rawData['address']['latitude'] ?? null,
            'agent_id'          => $rawData['realtor']['realtorName'] ?? null,
            'agent_nm'          => $rawData['realtor']['realtorName'] ?? null,
            'agent_head_tel'    => $rawData['realtor']['representativeCellphoneNumber'] ?? null,
            'rsrv_date'         => $rawData['site']['visitReserveDate'] ?? null,
            'rsrv_tm_ap'        => '00', // 컬럼명이 rsrv_tm_ap 인지 확인 필요 (제공해주신 스키마 기준)
            'insert_tm'         => $now,
            'rcpt_cpid'         => $rawData['cpId'] ?? 'naver',
            'room_cnt'          => $rawData['facilities']['roomCount'] ?? null,
            'isSiteVRVerification' => ($rawData['site']['isVrVerification'] ?? false) ? 'Y' : 'N'
        ];

        if (!$this->receiptModel->insert($receiptData)) {
             throw new \Exception("Receipt Insert 실패: " . json_encode($this->receiptModel->errors()));
        }
        
        $rcpt_sq = $this->receiptModel->getInsertID();

        if ( $receiptData['isVrVerification'] == "Y") {
            $dept_sq = '29';
            $usr_sq = '1993';
        }

        // 2. result 데이터 준비
        $resultData = [
            'rcpt_sq'      => $rcpt_sq,
            'use_yn'       => 'Y',
            'cust_nm'      => '', 
            'rsrv_date'    => $rawData['site']['visitReserveDate'] ?? null,
            'rsrv_tm_ap'   => '00', // 컬럼명이 rsrv_tm_ap 인지 확인 필요 (제공해주신 스키마 기준)
            'result_cd1'   => '10',
            'result_cd2'   => '1000',
            'result_cd3'   => '100000',
            'insert_tm'    => $now,
            'insert_usr'   => 0,
            'update_tm'    => $now,
            'update_usr'   => 0,
            'dept_sq'      => $dept_sq, // 필요 시 매핑 로직 추가
            'usr_sq'       => $usr_sq, // 필요 시 매핑 로직 추가
            'resYn'        => ($rawData['verificationResult']['isSuccessful'] ?? false) ? 'Y' : 'N',
        ];

        if (!$this->resultModel->insert($resultData)) {
            throw new \Exception("Result Insert 실패");
        }

        $this->db->transComplete();

        // transComplete 이후에 transStatus를 확인하는 것이 CI4의 표준입니다.
        if ($this->db->transStatus() === false) {
             // transComplete가 실패하면 자동으로 롤백되지만, 명시적 예외 처리가 안전합니다.
             throw new \Exception("Type S DB 트랜잭션 최종 실패");
        }

        return $rcpt_sq;

    } catch (\Exception $e) {
        // 이미 transComplete 내부에서 실패 시 롤백되지만, 예외 발생 시 수동 롤백 보장
        if ($this->db->transEnabled()) {
            $this->db->transRollback();
        }
        throw $e;
    }
}

    /**
     * [REG] 신규 등록
     */
    private function insertVrfcReq($articleNumber, $params)
    {
        CLI::write(CLI::color('🟢 매물 정보 시작', 'green'));
        $existing = $this->VrfcReqModel->where('atcl_no', $articleNumber)->first();
        if ($existing) throw new \Exception("중복 등록 시도: $articleNumber");

        $params['stat_cd'] = '10';
        $params['insert_user'] = '0';
        $params['req_type'] = 'C';

        if (!$this->VrfcReqModel->insert($params)) {
            $sql = (string)$this->VrfcReqModel->getLastQuery();
            write_custom_log("INSERT_FAILED | Atcl: $articleNumber | SQL: $sql", 'ERROR', 'failed');
            throw new \Exception("신규 등록 실패");
        }

        $vr_sq = $this->VrfcReqModel->getInsertID();
        $this->statusService->recordStatusAndHistory($vr_sq, '10', 'C9', "신규접수 : 10");

        return $vr_sq;
    }

    /**
     * [MOD] 수정 처리
     */
    private function updateVrfcReq($articleNumber, $params)
    {
        
        // 1. 데이터 존재 여부 확인
        $existing = $this->VrfcReqModel->where('atcl_no', $articleNumber)->first();

        if (!$existing) {
            // [A] 데이터가 없으면 먼저 신규 등록(10) 실행
            write_custom_log("MOD_NOT_FOUND | Atcl: $articleNumber | First, Insert new data.", 'INFO', 'service');
            
            $vr_sq = $this->insertVrfcReq($articleNumber, $params);
            
            // 새로 등록된 정보를 다시 가져옴 (updateProcess를 태우기 위해)
            $existing = $this->VrfcReqModel->find($vr_sq);
            
            // 통계 기록 (신규 등록 건으로 카운트)
            $this->V2stdailyModel->set_v2_st_daily(null, $params['cpid'], $params['vrfc_type'] . '0103', '1', 'add');
        }

        $params['stat_cd'] = '30';
        $params['req_type'] = 'U';
        $params['insert_tm'] = db_now();

        return $this->updateProcess($existing, $params, 'MOD', "재접수 상태변경: {$existing['stat_cd']} => 30");
    }

    /**
     * [CNC] 취소 처리
     */
    private function deleteVrfcReq($articleNumber, $params)
    {
        try {
            $existing = $this->findExisting($articleNumber);
        } catch (\Exception $e) {
            // 취소(CNC)하려는데 데이터가 없으면 이미 지워졌거나 오류일 수 있습니다.
            // 여기서는 로그만 남기고 종료하거나, 필요 시 Exception을 던집니다.
            throw new \Exception("CNC_NOT_FOUND | Atcl: $articleNumber WARNING service");
        }
        $params['stat_cd'] = '19';
        $params['req_type'] = 'D';

        return $this->updateProcess($existing, $params, 'CNC', "취소 처리: {$existing['stat_cd']} => 19");
    }

    /**
     * [FIN] 완료 처리
     */
    private function finVrfcReq($articleNumber, $params)
    {
        try {
            $existing = $this->findExisting($articleNumber);
        } catch (\Exception $e) {
            // 완료(FIN)하려는데 데이터가 없으면 이미 지워졌거나 오류일 수 있습니다.
            // 여기서는 로그만 남기고 종료하거나, 필요 시 Exception을 던집니다.
            throw new \Exception("FIN_NOT_FOUND | Atcl: $articleNumber WARNING service");
        }
        $params['stat_cd'] = '60';
        $params['req_type'] = 'F';

        return $this->updateProcess($existing, $params, 'FIN', "완료 처리: {$existing['stat_cd']} => 60");
    }

    // --- 내부 공통 유틸리티 함수 ---

    private function findExisting($articleNumber) {
        $existing = $this->VrfcReqModel->where('atcl_no', $articleNumber)->first();
        if (!$existing) throw new \Exception("해당 매물 없음: $articleNumber 재등록 필요");
        return $existing;
    }

    /**
     * 공통 업데이트 및 이력 기록 로직 (Lock 최소화)
     */
    private function updateProcess($existing, $params, $type, $memo)
    {
        $vr_sq = $existing['vr_sq'];
        
        if (!$this->VrfcReqModel->update($vr_sq, $params)) {
            $sql = (string)$this->VrfcReqModel->getLastQuery();
            write_custom_log("UPDATE_FAILED | Type: $type | vr_sq: $vr_sq | SQL: $sql", 'ERROR', 'failed');
            throw new \Exception("[$type] 업데이트 실패");
        }

        $this->statusService->recordStatusAndHistory($vr_sq, $params['stat_cd'], 'C9', $memo);
        return $vr_sq;
    }


    /**
     * API 데이터를 DB 컬럼에 맞게 변환
     */
    private function mapToDatabaseParams(array $articleInfo, array $payload): array
    {
        $files = $articleInfo['files'] ?? [];
        $certRegister = [];
        $confirm_doc_img_url = [];
        $referenceFileUrl = [];
        $requestDatetime = date('YmdHis', strtotime($payload['requestDatetime'] ?? 'now'));

        foreach ($files as $file) {
            $fileTypeCode = $file['fileTypeCode'];
            if ($fileTypeCode == 'RCDOC') {
                $certRegister[] = $file['fileUrl'];
            } elseif ($fileTypeCode == 'ADDOC') {
                $confirm_doc_img_url[] = $file['fileUrl'];
            } elseif ($fileTypeCode == 'REFER') {
                $referenceFileUrl[] = $file['fileUrl'];
            }
        }

        $ownerTypeRaw = $articleInfo['seller']['ownerTypeCode'] ?? null;

        $vrfc_params = [
            'reqSeq' => '',
            'atcl_no' => $articleInfo['articleNumber'],
            'step' => '',
            'cpid' => $articleInfo['cpId'],
            'cp_atcl_id' => $articleInfo['cpArticleNumber'],
            'trade_type' => $articleInfo['tradeTypeCode'],
            'realtor_nm' => $articleInfo['realtor']['realtorName'],
            'realtor_tel_no' => $articleInfo['realtor']['representativeCellphoneNumber'],
            'seller_tel_no' => $articleInfo['seller']['sellerTelephoneNumber'],
            'vrfc_type' => $articleInfo['verificationTypeCode'],
            'rgbk_confirm' => $articleInfo['isUnregisteredVerificationRequested'] ? 'Y' : 'N',
            'req_type' => '',
            'rdate' => $requestDatetime ?? db_now('Y-m-d H:i:s'),
            'cpTelNo' => $articleInfo['seller']['sellerTelephoneNumber'],
            'stat_cd' => '',
            'try_cnt' => '0',
            'insert_user' => '',
            'insert_tm' => db_now(),
            'memo' => '',
            'contact_fail_cnt' => '0',
            'sync_yn' => 'Y',
            'reg_try_cnt' => '0',
            'tel_fail_cause' => null,
            'rgbk_confirm_owner_nm' => $articleInfo['seller']['ownerName'] ?? null,
            'direct_trad_yn' => $articleInfo['seller']['isDirectTrade'] === true ? 'Y' : 'N',
            'confirm_doc_img_url' => empty($confirm_doc_img_url) ? null : json_encode($confirm_doc_img_url, JSON_UNESCAPED_UNICODE),
            'confirm_doc_owner_check_yn' => '',
            'owner_verifiable' => null,
            'vrfc_cmpl_type' => null,
            'rgbk_doc_img_url' => null,
            'certRegister' => empty($certRegister) ? null : json_encode($certRegister, JSON_UNESCAPED_UNICODE),
            'referenceFileUrl' => empty($referenceFileUrl) ? null : json_encode($referenceFileUrl, JSON_UNESCAPED_UNICODE),
        ];

        $articl_info_param = [
            'address_code' => $articleInfo['address']['legalDivision']['sectorNumber'] ?? '',           //읍면동코드
            'address1' => $articleInfo['address']['legalDivision']['legalDivisionAddress'] ?? '',       //법정도 주소
            'address2' => $articleInfo['address']['jibunAddress'] ?? '',
            'address3' => $articleInfo['address']['referenceAddress'] ?? '',
            'address4' => $articleInfo['address']['etcAddress'] ?? '',
            'sply_spc' => $articleInfo['space']['supplySpace'] ?? 0,
            'excls_spc' => $articleInfo['space']['exclusiveSpace'] ?? 0,
            'tot_spc' => $articleInfo['space']['totalSpace'] ?? 0,
            'grnd_spc' => $articleInfo['space']['groundSpace'] ?? 0,
            'bldg_spc' => $articleInfo['space']['buildingSpace'] ?? 0,
            'deal_amt' => $articleInfo['price']['dealAmount'] ?? 0,               // 매매금액
            'wrrnt_amt' => $articleInfo['price']['warrantyAmount'] ?? 0,    // 보증금
            'lease_amt' => $articleInfo['price']['leaseAmount'] ?? 0,       // 월세가 -> 임대가
            'isale_amt' => $articleInfo['price']['preSaleAmount'] ?? 0,     // 분양가
            'prem_amt' => $articleInfo['price']['premiumAmount'] ?? 0,     // 프리미엄
            'sise' => null,           // 매매, 전세 시세
            'floor' => $articleInfo['floor']['correspondenceFloorCount'] ?? 0,  // 층 / 해당 층
            '_correspondenceFloorType' => $articleInfo['floor']['correspondenceFloorType'] ?? null, // 층 / 해당 층 타입 // 기존 없음
            'floor2' => $articleInfo['floor']['totalFloorCount'] ?? 0, // 층 / 총 층수  // 기존 없음
            '_undergroundFloorCount' => $articleInfo['floor']['undergroundFloorCount'] ?? 0, // 층 / 지하 층수  // 기존 없음
            'rdate' => $requestDatetime ?? db_now('Y-m-d H:i:s'),
            'seller_tel_no' => $articleInfo['seller']['sellerTelephoneNumber'] ?? null,
            'seller_nm' => $articleInfo['seller']['sellerName'] ?? null,
            'ownerTelNo' => $articleInfo['seller']['ownerTelephoneNumber'] ?? null, // 소유자전화번호 기존 없음
            'ownerNm' => $articleInfo['seller']['ownerName'] ?? null, // 소유자명 기존 없음
            '_isOwnerCertificationAgree' => $articleInfo['seller']['isOwnerCertificationAgree'] ?? null, // 소유자확인동의여부 기존 없음
            'direct_trad_yn' => $articleInfo['seller']['isDirectTrade'] ?? null, // 직거래여부 기존 없음
            'realtor_nm' => $articleInfo['realtor']['realtorName'] ?? null,
            'realtor_tel_no' => $articleInfo['realtor']['representativeCellphoneNumber'] ?? null,
            '_representativeTelephoneNumber' => $articleInfo['realtor']['representativeTelephoneNumber'] ?? null, // 중개사대표전화번호 기존 없음
            'hscp_no' => $articleInfo['address']['complexNumber'] ?? null,
            'hscp_nm' => $articleInfo['address']['complexName'] ?? null,
            'ptp_no' => $articleInfo['address']['pyeongTypeNumber'] ?? null,
            'ptp_nm' => null,
            'charger' => null,
            'req_price_yn' => 'N',
            'reg_charger' => null,
            'dept1_sq' => null,
            'dept2_sq' => null, 
            'reg_dept2_sq' => null,
            'reg_dept1_sq' => null,
            'dong_ho_chk' => $articleInfo['address']['isDongHoChecked'] ?? null,
            'hscplqry_lv' => $articleInfo['address']['inquiryLevel'] ?? null,
            'chg_trade_type' => null,
            'chg_address2' => null,
            'chg_address3' => null,
            'chg_seller_tel' => null,
            'chg_amt' => null,
            'reg_status' => null,
            'cupnNo' => null,
            'roomSiteAtclRgstCnt' => null,
            'roomSiteAtclExpsCnt' => null,
            'redvlp_area_nm' => $articleInfo['address']['redevelopmentArea']['redevelopmentAreaName'] ?? null,
            'biz_stp_desc' => $articleInfo['address']['redevelopmentArea']['businessStep'] ?? null,
            'cert_register' => empty($certRegister) ? null : json_encode($certRegister, JSON_UNESCAPED_UNICODE),
            'confirm_doc_img_url' => empty($confirm_doc_img_url) ? null : json_encode($confirm_doc_img_url, JSON_UNESCAPED_UNICODE),
            'confirm_doc_owner_check_yn' => $articleInfo['seller']['isOwnerCertificationAgree'] === true ? 'Y' : 'N',
            'owner_birth' => $articleInfo['seller']['ownerBirthDate'] ?? null,
            'vrfc_type_sub' => null,
            'cert_register_save_yn' => '',
            'confirm_doc_img_url_save_yn' => '',
            'reference_file_url' => empty($referenceFileUrl) ? null : json_encode($referenceFileUrl, JSON_UNESCAPED_UNICODE),
            'reference_file_url_save_yn' => '',
            'reference_file_url_yn' => empty($referenceFileUrl) ? 'N' : 'Y',
            'registerBookUniqueNo' => null,     // 검증 참고란
            'relationSellerAndOwner' => null,   // 의뢰인과 소유주 관계
            'ownerTypeCode' => getOwnerTypeCodeNo($ownerTypeRaw) ?? null,  // 소유자구분코드
            'registerBookUniqueNumber' => null,  // 등기부 고유번호
        ];

        
        $article_info_etc_param = [
            'corp_own' => $ownerTypeRaw == 'CORP' ? 'Y' : 'N',
            'bild_no' => null,          // 건물번호
            'address2a' => $articleInfo['address']['liAddress'] ?? null, // 지번주소
            'address2b' => $articleInfo['address']['jibunAddress'] ?? null, // 도로명주소
            'expsStartYmdt' => $articleInfo['exposureStartDateTime'] ?? null,
            'vrfcAutoPassYn' => $articleInfo['isAutoVerificationRequested'] === true ? 'Y' : 'N',
            'registerBookUniqueNo' => null,
            'ownerTypeCode' => getOwnerTypeCodeNo($ownerTypeRaw) ?? null,
            'orgRepCphNo' => null,
            'orgRepTelNo' => null,// 원중개사 대표자명
            'orgRltrNm' => null, // 원중개사 대표자명
            'smsSendTime' => null,  // 서류확인 내용
            'document_cert_method' => null,
            'noRgbkVrfcReqYn' => $articleInfo['isUnregisteredVerificationRequested'] === true ? 'Y' : 'N',
            'areaByBdbkVrfcReqYn' => $articleInfo['isBuildingRegisterAreaCheckRequested'] === true ? 'Y' : 'N', //건축물대장기준 면적검증요청 여부 Y / N 또는 항목미전송
            'orgAtclNo' => null,  // 원매물 번호
            'atclStatCd' => null, // 매물상태코드 J1W : 공동중개 검증 원)중개사 확인 요청
            'repNm' => $articleInfo['realtor']['representativeName'] ?? null, // 원중개사 대표자명
            'cpName' => $articleInfo['realtor']['realtorName'], // 중개업소 대표자명 ?
            'document_not_received' => null,
            'final_failure' => null
        ];

        // $vrfc_params = array_merge($vrfc_params, $articl_info_param, $article_info_etc_param);

        // 개인: INDIV => 0
        // 법인: CORP => 1
        // 외국인: FRGNR => 2
        // 위임장: DELEG => 3

        return $vrfc_params;
    }


}