import { execute, query, queryOne } from '../../../../utils/db'
import { getClientIp } from '../../../../utils/ip'
import { getCurrentUserEmail } from '../../../../utils/user'

interface ProjectItem {
  projectId: number
  workDescription?: string
  planDescription?: string
}

interface UpdateReportBody {
  projects?: ProjectItem[]
  issueDescription?: string
  vacationDescription?: string
  remarkDescription?: string
}

/**
 * 주간보고 수정
 * PUT /api/report/weekly/[id]/update
 */
export default defineEventHandler(async (event) => {
  const userId = getCookie(event, 'user_id')
  if (!userId) {
    throw createError({ statusCode: 401, message: '로그인이 필요합니다.' })
  }
  
  const reportId = getRouterParam(event, 'id')
  const body = await readBody<UpdateReportBody>(event)
  const clientIp = getClientIp(event)
  const userEmail = await getCurrentUserEmail(event)
  
  // 보고서 조회 및 권한 확인
  const report = await queryOne<any>(`
    SELECT * FROM wr_weekly_report WHERE report_id = $1
  `, [reportId])
  
  if (!report) {
    throw createError({ statusCode: 404, message: '보고서를 찾을 수 없습니다.' })
  }
  
  if (report.author_id !== parseInt(userId)) {
    throw createError({ statusCode: 403, message: '본인의 보고서만 수정할 수 있습니다.' })
  }
  
  if (report.report_status === 'SUBMITTED' || report.report_status === 'AGGREGATED') {
    throw createError({ statusCode: 400, message: '제출된 보고서는 수정할 수 없습니다.' })
  }
  
  // 마스터 업데이트
  await execute(`
    UPDATE wr_weekly_report SET
      issue_description = $1,
      vacation_description = $2,
      remark_description = $3,
      updated_at = NOW(),
      updated_ip = $4,
      updated_email = $5
    WHERE report_id = $6
  `, [
    body.issueDescription ?? report.issue_description,
    body.vacationDescription ?? report.vacation_description,
    body.remarkDescription ?? report.remark_description,
    clientIp,
    userEmail,
    reportId
  ])
  
  // 프로젝트별 실적 업데이트
  if (body.projects && body.projects.length > 0) {
    // 기존 삭제 후 재등록
    await execute(`DELETE FROM wr_weekly_report_project WHERE report_id = $1`, [reportId])
    
    for (const proj of body.projects) {
      await execute(`
        INSERT INTO wr_weekly_report_project (
          report_id, project_id, work_description, plan_description,
          created_ip, created_email, updated_ip, updated_email
        ) VALUES ($1, $2, $3, $4, $5, $6, $5, $6)
      `, [
        reportId,
        proj.projectId,
        proj.workDescription || null,
        proj.planDescription || null,
        clientIp,
        userEmail
      ])
    }
  }
  
  return { success: true }
})