import { defineEventHandler, getQuery } from 'h3'
import { query } from '../../../utils/db'

/**
 * 주차별 취합 목록
 * GET /api/report/summary/weekly-list
 */
export default defineEventHandler(async (event) => {
  const queryParams = getQuery(event)
  const year = queryParams.year ? parseInt(queryParams.year as string) : new Date().getFullYear()
  
  // 주차별로 그룹핑
  const rows = await query(`
    SELECT 
      s.report_year,
      s.report_week,
      MIN(s.week_start_date) as week_start_date,
      MAX(s.week_end_date) as week_end_date,
      COUNT(DISTINCT s.project_id) as project_count,
      SUM(s.member_count) as total_members,
      SUM(COALESCE(s.total_work_hours, 0)) as total_work_hours,
      MAX(s.aggregated_at) as latest_aggregated_at,
      ARRAY_AGG(DISTINCT p.project_name ORDER BY p.project_name) as project_names
    FROM wr_aggregated_report_summary s
    JOIN wr_project_info p ON s.project_id = p.project_id
    WHERE s.report_year = $1
    GROUP BY s.report_year, s.report_week
    ORDER BY s.report_week DESC
  `, [year])
  
  return {
    weeks: rows.map((r: any) => ({
      reportYear: r.report_year,
      reportWeek: r.report_week,
      weekStartDate: r.week_start_date,
      weekEndDate: r.week_end_date,
      projectCount: parseInt(r.project_count),
      totalMembers: parseInt(r.total_members),
      totalWorkHours: parseFloat(r.total_work_hours) || 0,
      latestAggregatedAt: r.latest_aggregated_at,
      projects: r.project_names || []
    }))
  }
})