import { query, queryOne } from '../../../utils/db'

/**
 * 사업 상세 조회
 * GET /api/business/[id]/detail
 */
export default defineEventHandler(async (event) => {
  const businessId = Number(getRouterParam(event, 'id'))
  
  if (!businessId) {
    throw createError({ statusCode: 400, message: '사업 ID가 필요합니다.' })
  }
  
  const business = await queryOne(`
    SELECT 
      b.*,
      e1.employee_name as created_by_name,
      e2.employee_name as updated_by_name
    FROM wr_business b
    LEFT JOIN wr_employee_info e1 ON b.created_by = e1.employee_id
    LEFT JOIN wr_employee_info e2 ON b.updated_by = e2.employee_id
    WHERE b.business_id = $1
  `, [businessId])
  
  if (!business) {
    throw createError({ statusCode: 404, message: '사업을 찾을 수 없습니다.' })
  }
  
  // 소속 프로젝트 목록
  const projects = await query(`
    SELECT 
      p.project_id,
      p.project_name,
      p.project_code,
      p.project_type,
      p.project_status,
      p.start_date,
      p.end_date
    FROM wr_project_info p
    WHERE p.business_id = $1
    ORDER BY p.project_name
  `, [businessId])
  
  return {
    business: {
      businessId: business.business_id,
      businessName: business.business_name,
      businessCode: business.business_code,
      clientName: business.client_name,
      contractStartDate: business.contract_start_date,
      contractEndDate: business.contract_end_date,
      businessStatus: business.business_status,
      description: business.description,
      createdBy: business.created_by,
      createdByName: business.created_by_name,
      updatedBy: business.updated_by,
      updatedByName: business.updated_by_name,
      createdAt: business.created_at,
      updatedAt: business.updated_at
    },
    projects: projects.map((p: any) => ({
      projectId: p.project_id,
      projectName: p.project_name,
      projectCode: p.project_code,
      projectType: p.project_type,
      projectStatus: p.project_status,
      startDate: p.start_date,
      endDate: p.end_date
    }))
  }
})