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

/**
 * 사업 주간보고 상세 조회
 * GET /api/business-report/[id]/detail
 */
export default defineEventHandler(async (event) => {
  const businessReportId = Number(getRouterParam(event, 'id'))
  
  const report = await queryOne(`
    SELECT 
      br.*,
      b.business_name,
      e.employee_name as created_by_name
    FROM wr_business_weekly_report br
    JOIN wr_business b ON br.business_id = b.business_id
    LEFT JOIN wr_employee_info e ON br.created_by = e.employee_id
    WHERE br.business_report_id = $1
  `, [businessReportId])
  
  if (!report) {
    throw createError({ statusCode: 404, message: '보고서를 찾을 수 없습니다.' })
  }
  
  // 소속 프로젝트 목록
  const projects = await query(`
    SELECT project_id, project_name FROM wr_project_info WHERE business_id = $1
  `, [report.business_id])
  
  const projectIds = projects.map((p: any) => p.project_id)
  
  // 해당 주차 실적 목록
  const tasks = await query(`
    SELECT 
      t.task_id,
      t.task_description,
      t.task_type,
      t.task_hours,
      p.project_id,
      p.project_name,
      e.employee_id,
      e.employee_name
    FROM wr_weekly_report_task t
    JOIN wr_weekly_report r ON t.report_id = r.report_id
    JOIN wr_project_info p ON t.project_id = p.project_id
    JOIN wr_employee_info e ON r.author_id = e.employee_id
    WHERE t.project_id = ANY($1)
      AND r.report_year = $2
      AND r.report_week = $3
    ORDER BY p.project_name, e.employee_name
  `, [projectIds, report.report_year, report.report_week])
  
  return {
    report: {
      businessReportId: report.business_report_id,
      businessId: report.business_id,
      businessName: report.business_name,
      reportYear: report.report_year,
      reportWeek: report.report_week,
      weekStartDate: report.week_start_date,
      weekEndDate: report.week_end_date,
      aiSummary: report.ai_summary,
      manualSummary: report.manual_summary,
      status: report.status,
      createdByName: report.created_by_name,
      createdAt: report.created_at,
      updatedAt: report.updated_at
    },
    tasks: tasks.map((t: any) => ({
      taskId: t.task_id,
      taskDescription: t.task_description,
      taskType: t.task_type,
      taskHours: t.task_hours,
      projectId: t.project_id,
      projectName: t.project_name,
      employeeId: t.employee_id,
      employeeName: t.employee_name
    }))
  }
})