// =====================================================
// 團隊管理 API
// =====================================================

import { NextRequest, NextResponse } from 'next/server';
import { TeamService } from '@/lib/services/database-service';

// 獲取所有團隊
export async function GET(request: NextRequest) {
  try {
    const { searchParams } = new URL(request.url);
    const search = searchParams.get('search') || '';
    const department = searchParams.get('department') || '';
    
    let teams = await TeamService.getAllTeams();
    
    // 應用篩選
    if (search) {
      teams = teams.filter(team => 
        team.name.toLowerCase().includes(search.toLowerCase()) ||
        team.leader_name?.toLowerCase().includes(search.toLowerCase())
      );
    }
    
    if (department && department !== 'all') {
      teams = teams.filter(team => team.department === department);
    }
    
    return NextResponse.json({
      success: true,
      message: '團隊列表獲取成功',
      data: teams
    });

  } catch (error) {
    console.error('獲取團隊列表失敗:', error);
    return NextResponse.json({
      success: false,
      message: '獲取團隊列表失敗',
      error: error instanceof Error ? error.message : '未知錯誤'
    }, { status: 500 });
  }
}

// 創建團隊
export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    
    // 驗證必填字段
    if (!body.name || !body.leader_id || !body.department || !body.contact_email) {
      return NextResponse.json({
        success: false,
        message: '請填寫所有必填字段',
        error: '缺少必填字段'
      }, { status: 400 });
    }

    // 檢查團隊名稱是否已存在
    const existingTeam = await TeamService.getTeamByName(body.name);
    if (existingTeam) {
      return NextResponse.json({
        success: false,
        message: '團隊名稱已存在',
        error: '團隊名稱重複'
      }, { status: 409 });
    }

    // 創建團隊
    const teamId = await TeamService.createTeam({
      name: body.name,
      leader_id: body.leader_id,
      department: body.department,
      contact_email: body.contact_email,
      description: body.description
    });

    // 如果提供了成員列表，添加成員
    if (body.members && Array.isArray(body.members)) {
      for (const member of body.members) {
        if (member.user_id && member.role) {
          await TeamService.addTeamMember(teamId, member.user_id, member.role);
        }
      }
    }

    // 如果提供了應用列表，綁定應用
    if (body.apps && Array.isArray(body.apps)) {
      for (const appId of body.apps) {
        await TeamService.bindAppToTeam(teamId, appId);
      }
    }

    // 獲取創建後的團隊信息
    const createdTeam = await TeamService.getTeamById(teamId);
    
    return NextResponse.json({
      success: true,
      message: '團隊創建成功',
      data: createdTeam
    });

  } catch (error) {
    console.error('創建團隊失敗:', error);
    return NextResponse.json({
      success: false,
      message: '創建團隊失敗',
      error: error instanceof Error ? error.message : '未知錯誤'
    }, { status: 500 });
  }
}