/**
 * 일반계약 결재 템플릿 변수 매핑 함수
 * 
 * 제공된 HTML 템플릿의 변수명에 맞춰 매핑
 */

'use server';

import { format } from 'date-fns';

interface ContractSummary {
  basicInfo: Record<string, unknown>;
  items: Record<string, unknown>[];
  subcontractChecklist: Record<string, unknown> | null;
  storageInfo?: Record<string, unknown>[];
}

/**
 * 일반계약 데이터를 결재 템플릿 변수로 매핑
 * 
 * @param contractSummary - 계약 요약 정보
 * @returns 템플릿 변수 객체 (Record<string, string>)
 */
export async function mapContractToApprovalTemplateVariables(
  contractSummary: ContractSummary
): Promise<Record<string, string>> {
  const { basicInfo, items, subcontractChecklist } = contractSummary;

  // 날짜 포맷팅 헬퍼
  const formatDate = (date: any) => {
    if (!date) return '';
    try {
      const d = new Date(date);
      if (isNaN(d.getTime())) return String(date);
      return format(d, 'yyyy-MM-dd');
    } catch {
      return String(date || '');
    }
  };

  // 금액 포맷팅 헬퍼
  const formatCurrency = (amount: any) => {
    if (amount === undefined || amount === null || amount === '') return '';
    const num = Number(amount);
    if (isNaN(num)) return String(amount);
    return num.toLocaleString('ko-KR');
  };

  // 계약기간 포맷팅
  const contractPeriod = basicInfo.startDate && basicInfo.endDate
    ? `${formatDate(basicInfo.startDate)} ~ ${formatDate(basicInfo.endDate)}`
    : '';

  // 계약체결방식
  const contractExecutionMethod = basicInfo.executionMethod || '';
  
  // 계약종류
  const contractType = basicInfo.type || '';
  
  // 업체선정방식
  const vendorSelectionMethod = basicInfo.contractSourceType || '';

  // 매입 부가가치세
  const taxType = basicInfo.taxType || '';

  // SHI 지급조건
  const paymentTerm = basicInfo.paymentTerm || '';

  // SHI 인도조건
  const deliveryTerm = basicInfo.deliveryTerm || '';
  const deliveryType = basicInfo.deliveryType || '';

  // 사외업체 야드 투입 여부
  const externalYardEntry = basicInfo.externalYardEntry === 'Y' ? '예' : '아니오';

  // 직종
  const workType = basicInfo.workType || '';

  // 재하도 협력사
  const subcontractVendor = basicInfo.subcontractVendorName || '';

  // 계약 내용
  const contractContent = basicInfo.notes || basicInfo.name || '';

  // 계약성립조건
  let establishmentConditionsText = '';
  if (basicInfo.contractEstablishmentConditions) {
    try {
      const cond = typeof basicInfo.contractEstablishmentConditions === 'string'
        ? JSON.parse(basicInfo.contractEstablishmentConditions)
        : basicInfo.contractEstablishmentConditions;
      
      const active: string[] = [];
      if (cond.regularVendorRegistration) active.push('정규업체 등록(실사 포함) 시');
      if (cond.projectAward) active.push('프로젝트 수주 시');
      if (cond.ownerApproval) active.push('선주 승인 시');
      if (cond.other) active.push('기타');
      establishmentConditionsText = active.join(', ');
    } catch (e) {
      console.warn('계약성립조건 파싱 실패:', e);
    }
  }

  // 계약해지조건
  let terminationConditionsText = '';
  if (basicInfo.contractTerminationConditions) {
    try {
      const cond = typeof basicInfo.contractTerminationConditions === 'string'
        ? JSON.parse(basicInfo.contractTerminationConditions)
        : basicInfo.contractTerminationConditions;
      
      const active: string[] = [];
      if (cond.standardTermination) active.push('표준 계약해지조건');
      if (cond.projectNotAwarded) active.push('프로젝트 미수주 시');
      if (cond.other) active.push('기타');
      terminationConditionsText = active.join(', ');
    } catch (e) {
      console.warn('계약해지조건 파싱 실패:', e);
    }
  }

  // 협력사 정보
  const vendorCode = basicInfo.vendorCode || '';
  const vendorName = basicInfo.vendorName || '';
  const vendorContactPerson = basicInfo.vendorContactPerson || '';
  const vendorPhone = basicInfo.vendorPhone || '';
  const vendorEmail = basicInfo.vendorEmail || '';
  const vendorNote = '';

  // 자재 정보 (최대 100건)
  const materialItems = items.slice(0, 100);
  const materialCount = items.length;

  // 보증 정보
  const guarantees: Array<{
    type: string;
    order: number;
    bondNumber: string;
    rate: string;
    amount: string;
    period: string;
    startDate: string;
    endDate: string;
    issuer: string;
  }> = [];

  // 계약보증
  if (basicInfo.contractBond) {
    const bond = typeof basicInfo.contractBond === 'string'
      ? JSON.parse(basicInfo.contractBond)
      : basicInfo.contractBond;
    
    if (bond && Array.isArray(bond)) {
      bond.forEach((b: any, idx: number) => {
        guarantees.push({
          type: '계약보증',
          order: idx + 1,
          bondNumber: b.bondNumber || '',
          rate: b.rate ? `${b.rate}%` : '',
          amount: formatCurrency(b.amount),
          period: b.period || '',
          startDate: formatDate(b.startDate),
          endDate: formatDate(b.endDate),
          issuer: b.issuer || '',
        });
      });
    }
  }

  // 지급보증
  if (basicInfo.paymentBond) {
    const bond = typeof basicInfo.paymentBond === 'string'
      ? JSON.parse(basicInfo.paymentBond)
      : basicInfo.paymentBond;
    
    if (bond && Array.isArray(bond)) {
      bond.forEach((b: any, idx: number) => {
        guarantees.push({
          type: '지급보증',
          order: idx + 1,
          bondNumber: b.bondNumber || '',
          rate: b.rate ? `${b.rate}%` : '',
          amount: formatCurrency(b.amount),
          period: b.period || '',
          startDate: formatDate(b.startDate),
          endDate: formatDate(b.endDate),
          issuer: b.issuer || '',
        });
      });
    }
  }

  // 하자보증
  if (basicInfo.defectBond) {
    const bond = typeof basicInfo.defectBond === 'string'
      ? JSON.parse(basicInfo.defectBond)
      : basicInfo.defectBond;
    
    if (bond && Array.isArray(bond)) {
      bond.forEach((b: any, idx: number) => {
        guarantees.push({
          type: '하자보증',
          order: idx + 1,
          bondNumber: b.bondNumber || '',
          rate: b.rate ? `${b.rate}%` : '',
          amount: formatCurrency(b.amount),
          period: b.period || '',
          startDate: formatDate(b.startDate),
          endDate: formatDate(b.endDate),
          issuer: b.issuer || '',
        });
      });
    }
  }

  // 보증 전체 비고
  const guaranteeNote = basicInfo.guaranteeNote || '';

  // 하도급 체크리스트
  const checklistItems: Array<{
    category: string;
    item1: string;
    item2: string;
    result: string;
    department: string;
    cause: string;
    measure: string;
  }> = [];

  if (subcontractChecklist) {
    // 1-1. 작업 시 서면 발급
    checklistItems.push({
      category: '계약 시 [계약 체결 단계]',
      item1: '1-1. 작업 시 서면 발급',
      item2: '-',
      result: subcontractChecklist.workDocumentIssued === '준수' ? '준수' : 
              subcontractChecklist.workDocumentIssued === '위반' ? '위반' : 
              subcontractChecklist.workDocumentIssued === '위반의심' ? '위반의심' : '',
      department: subcontractChecklist.workDocumentIssuedDepartment || '',
      cause: subcontractChecklist.workDocumentIssuedCause || '',
      measure: subcontractChecklist.workDocumentIssuedMeasure || '',
    });

    // 1-2. 6대 법정 기재사항 명기 여부
    checklistItems.push({
      category: '계약 시 [계약 체결 단계]',
      item1: '1-2. 6대 법정 기재사항 명기 여부',
      item2: '-',
      result: subcontractChecklist.sixLegalItems === '준수' ? '준수' : 
              subcontractChecklist.sixLegalItems === '위반' ? '위반' : 
              subcontractChecklist.sixLegalItems === '위반의심' ? '위반의심' : '',
      department: subcontractChecklist.sixLegalItemsDepartment || '',
      cause: subcontractChecklist.sixLegalItemsCause || '',
      measure: subcontractChecklist.sixLegalItemsMeasure || '',
    });

    // 2. 부당 하도급 대금 결정 행위
    checklistItems.push({
      category: '계약 시 [계약 체결 단계]',
      item1: '-',
      item2: '2. 부당 하도급 대금 결정 행위 (대금 결정 방법)',
      result: subcontractChecklist.unfairSubcontractPrice === '준수' ? '준수' : 
              subcontractChecklist.unfairSubcontractPrice === '위반' ? '위반' : 
              subcontractChecklist.unfairSubcontractPrice === '위반의심' ? '위반의심' : '',
      department: subcontractChecklist.unfairSubcontractPriceDepartment || '',
      cause: subcontractChecklist.unfairSubcontractPriceCause || '',
      measure: subcontractChecklist.unfairSubcontractPriceMeasure || '',
    });
  }

  // 총 계약 금액 계산
  const totalContractAmount = items.reduce((sum, item) => {
    const amount = Number(item.contractAmount || item.totalLineAmount || 0);
    return sum + (isNaN(amount) ? 0 : amount);
  }, 0);

  // 변수 매핑
  const variables: Record<string, string> = {
    // 계약 기본 정보
    '계약번호': String(basicInfo.contractNumber || ''),
    '계약명': String(basicInfo.name || basicInfo.contractName || ''),
    '계약체결방식': String(contractExecutionMethod),
    '계약종류': String(contractType),
    '구매담당자': String(basicInfo.managerName || basicInfo.registeredByName || ''),
    '업체선정방식': String(vendorSelectionMethod),
    '입찰번호': String(basicInfo.linkedBidNumber || ''),
    '입찰명': String(basicInfo.linkedBidName || ''),
    '계약기간': contractPeriod,
    '계약일자': formatDate(basicInfo.registeredAt || basicInfo.createdAt),
    '매입_부가가치세': String(taxType),
    '계약_담당자': String(basicInfo.managerName || basicInfo.registeredByName || ''),
    '계약부서': String(basicInfo.departmentName || ''),
    '계약금액': formatCurrency(basicInfo.contractAmount),
    'SHI_지급조건': String(paymentTerm),
    'SHI_인도조건': String(deliveryTerm),
    'SHI_인도조건_옵션': String(deliveryType),
    '선적지': String(basicInfo.shippingLocation || ''),
    '하역지': String(basicInfo.dischargeLocation || ''),
    '사외업체_야드_투입여부': externalYardEntry,
    '프로젝트': String(basicInfo.projectName || basicInfo.projectCode || ''),
    '직종': String(workType),
    '재하도_협력사': String(subcontractVendor),
    '계약내용': String(contractContent),
    '계약성립조건': establishmentConditionsText,
    '계약해지조건': terminationConditionsText,

    // 협력사 정보
    '협력사코드': String(vendorCode),
    '협력사명': String(vendorName),
    '협력사_담당자': String(vendorContactPerson),
    '전화번호': String(vendorPhone),
    '이메일': String(vendorEmail),
    '비고': String(vendorNote),

    // 자재 정보
    '대상_자재_수': String(materialCount),
  };

  // 자재 정보 변수 (최대 100건)
  materialItems.forEach((item, index) => {
    const idx = index + 1;
    variables[`플랜트_${idx}`] = String(item.plant || '');
    variables[`프로젝트_${idx}`] = String(item.projectName || item.projectCode || '');
    variables[`자재그룹_${idx}`] = String(item.itemGroup || item.itemCode || '');
    variables[`자재그룹명_${idx}`] = String(item.itemGroupName || '');
    variables[`자재번호_${idx}`] = String(item.itemCode || '');
    variables[`자재상세_${idx}`] = String(item.itemInfo || item.description || '');
    variables[`연간단가여부_${idx}`] = String(item.isAnnualPrice ? '예' : '아니오');
    variables[`수량_${idx}`] = formatCurrency(item.quantity);
    variables[`구매단위_${idx}`] = String(item.quantityUnit || '');
    variables[`계약단가_${idx}`] = formatCurrency(item.contractUnitPrice || item.unitPrice);
    variables[`수량단위_${idx}`] = String(item.quantityUnit || '');
    variables[`총중량_${idx}`] = formatCurrency(item.totalWeight);
    variables[`중량단위_${idx}`] = String(item.weightUnit || '');
    variables[`계약금액_${idx}`] = formatCurrency(item.contractAmount || item.totalLineAmount);
  });

  // 총 계약 금액
  variables['총_계약금액'] = formatCurrency(totalContractAmount);

  // 보증 정보 변수
  guarantees.forEach((guarantee, index) => {
    const idx = index + 1;
    const typeKey = String(guarantee.type);
    variables[`${typeKey}_차수_${idx}`] = String(guarantee.order);
    variables[`${typeKey}_증권번호_${idx}`] = String(guarantee.bondNumber || '');
    variables[`${typeKey}_보증금율_${idx}`] = String(guarantee.rate || '');
    variables[`${typeKey}_보증금액_${idx}`] = String(guarantee.amount || '');
    variables[`${typeKey}_보증기간_${idx}`] = String(guarantee.period || '');
    variables[`${typeKey}_시작일_${idx}`] = String(guarantee.startDate || '');
    variables[`${typeKey}_종료일_${idx}`] = String(guarantee.endDate || '');
    variables[`${typeKey}_발행기관_${idx}`] = String(guarantee.issuer || '');
  });

  // 보증 전체 비고
  variables['보증_전체_비고'] = String(guaranteeNote);

  // 하도급 체크리스트 변수
  checklistItems.forEach((item, index) => {
    const idx = index + 1;
    variables[`점검결과_${idx === 1 ? '1_1' : idx === 2 ? '1_2' : '2'}`] = String(item.result);
    variables[`귀책부서_${idx === 1 ? '1_1' : idx === 2 ? '1_2' : '2'}`] = String(item.department);
    variables[`원인_${idx === 1 ? '1_1' : idx === 2 ? '1_2' : '2'}`] = String(item.cause);
    variables[`대책_${idx === 1 ? '1_1' : idx === 2 ? '1_2' : '2'}`] = String(item.measure);
  });

  return variables;
}