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

const ADMIN_EMAIL = 'coziny@gmail.com'

/**
 * 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 clientIp = getHeader(event, 'x-forwarded-for') || 'unknown'
  const user = await queryOne<any>(`SELECT employee_email FROM wr_employee_info WHERE employee_id = $1`, [userId])
  const userEmail = user?.employee_email || ''
  const isAdmin = userEmail === ADMIN_EMAIL
  
  // 보고서 조회 및 권한 체크
  const report = await queryOne<any>(`
    SELECT report_id, author_id, report_status FROM wr_weekly_report WHERE report_id = $1
  `, [reportId])
  
  if (!report) {
    throw createError({ statusCode: 404, message: '보고서를 찾을 수 없습니다.' })
  }
  
  // 관리자가 아니면 본인 보고서만 수정 가능
  if (!isAdmin && report.author_id !== parseInt(userId)) {
    throw createError({ statusCode: 403, message: '본인의 보고서만 수정할 수 있습니다.' })
  }
  
  // 취합완료된 보고서는 수정 불가 (관리자도)
  if (report.report_status === 'AGGREGATED') {
    throw createError({ statusCode: 400, message: '취합완료된 보고서는 수정할 수 없습니다.' })
  }
  
  const body = await readBody<{
    reportYear?: number
    reportWeek?: number
    weekStartDate?: string
    weekEndDate?: string
    tasks: {
      projectId: number
      taskType: 'WORK' | 'PLAN'
      taskDescription: string
      taskHours: number
      isCompleted?: boolean
    }[]
    issueDescription?: string
    vacationDescription?: string
    remarkDescription?: string
  }>(event)
  
  if (!body.tasks || body.tasks.length === 0) {
    throw createError({ statusCode: 400, message: '최소 1개 이상의 Task가 필요합니다.' })
  }
  
  // 마스터 수정
  await execute(`
    UPDATE wr_weekly_report SET
      report_year = COALESCE($1, report_year),
      report_week = COALESCE($2, report_week),
      week_start_date = COALESCE($3, week_start_date),
      week_end_date = COALESCE($4, week_end_date),
      issue_description = $5,
      vacation_description = $6,
      remark_description = $7,
      updated_at = NOW(),
      updated_ip = $8,
      updated_email = $9
    WHERE report_id = $10
  `, [
    body.reportYear || null,
    body.reportWeek || null,
    body.weekStartDate || null,
    body.weekEndDate || null,
    body.issueDescription || null,
    body.vacationDescription || null,
    body.remarkDescription || null,
    clientIp, userEmail, reportId
  ])
  
  // 기존 Task 삭제 후 재등록
  await execute(`DELETE FROM wr_weekly_report_task WHERE report_id = $1`, [reportId])
  
  for (const task of body.tasks) {
    await execute(`
      INSERT INTO wr_weekly_report_task (
        report_id, project_id, task_type, task_description, task_hours, is_completed,
        created_ip, created_email, updated_ip, updated_email
      ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $7, $8)
    `, [
      reportId, task.projectId, task.taskType, task.taskDescription, task.taskHours || 0,
      task.taskType === 'WORK' ? (task.isCompleted !== false) : null,
      clientIp, userEmail
    ])
  }
  
  return {
    success: true,
    message: '주간보고가 수정되었습니다.'
  }
})