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

/**
 * 주간보고 작성
 * POST /api/report/weekly/create
 */
export default defineEventHandler(async (event) => {
  const userId = getCookie(event, 'user_id')
  if (!userId) {
    throw createError({ statusCode: 401, message: '로그인이 필요합니다.' })
  }
  
  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 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)
  
  // 필수값 체크
  if (!body.reportYear || !body.reportWeek || !body.weekStartDate || !body.weekEndDate) {
    throw createError({ statusCode: 400, message: '주차 정보가 필요합니다.' })
  }
  
  if (!body.tasks || body.tasks.length === 0) {
    throw createError({ statusCode: 400, message: '최소 1개 이상의 Task가 필요합니다.' })
  }
  
  // 중복 체크
  const existing = await queryOne<any>(`
    SELECT report_id FROM wr_weekly_report 
    WHERE author_id = $1 AND report_year = $2 AND report_week = $3
  `, [userId, body.reportYear, body.reportWeek])
  
  if (existing) {
    throw createError({ statusCode: 409, message: '해당 주차에 이미 작성된 보고서가 있습니다.' })
  }
  
  // 마스터 등록
  const result = await queryOne<any>(`
    INSERT INTO wr_weekly_report (
      author_id, report_year, report_week, week_start_date, week_end_date,
      issue_description, vacation_description, remark_description,
      report_status, created_ip, created_email, updated_ip, updated_email
    ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, 'DRAFT', $9, $10, $9, $10)
    RETURNING report_id
  `, [
    userId, body.reportYear, body.reportWeek, body.weekStartDate, body.weekEndDate,
    body.issueDescription || null, body.vacationDescription || null, body.remarkDescription || null,
    clientIp, userEmail
  ])
  
  const reportId = result.report_id
  
  // Task 등록
  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,
    reportId,
    message: '주간보고가 작성되었습니다.'
  }
})