// =====================================================
// 當前競賽管理 API
// =====================================================

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

// 獲取當前競賽
export async function GET(request: NextRequest) {
  try {
    const currentCompetition = await CompetitionService.getCurrentCompetition();
    
    return NextResponse.json({
      success: true,
      message: '當前競賽獲取成功',
      data: currentCompetition
    });

  } catch (error) {
    console.error('獲取當前競賽失敗:', error);
    return NextResponse.json({
      success: false,
      message: '獲取當前競賽失敗',
      error: error instanceof Error ? error.message : '未知錯誤'
    }, { status: 500 });
  }
}

// 設置當前競賽
export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    const { competitionId } = body;
    
    if (!competitionId) {
      return NextResponse.json({
        success: false,
        message: '缺少競賽ID',
        error: 'competitionId 為必填欄位'
      }, { status: 400 });
    }

    // 檢查競賽是否存在
    const competition = await CompetitionService.getCompetitionById(competitionId);
    if (!competition) {
      return NextResponse.json({
        success: false,
        message: '競賽不存在',
        error: '找不到指定的競賽'
      }, { status: 404 });
    }

    // 設置為當前競賽
    const success = await CompetitionService.setCurrentCompetition(competitionId);
    
    if (!success) {
      return NextResponse.json({
        success: false,
        message: '設置當前競賽失敗',
        error: '無法設置當前競賽'
      }, { status: 500 });
    }

    // 獲取更新後的當前競賽
    const updatedCurrentCompetition = await CompetitionService.getCurrentCompetition();

    return NextResponse.json({
      success: true,
      message: '當前競賽設置成功',
      data: updatedCurrentCompetition
    });

  } catch (error) {
    console.error('設置當前競賽失敗:', error);
    return NextResponse.json({
      success: false,
      message: '設置當前競賽失敗',
      error: error instanceof Error ? error.message : '未知錯誤'
    }, { status: 500 });
  }
}

// 取消當前競賽
export async function DELETE(request: NextRequest) {
  try {
    const success = await CompetitionService.clearCurrentCompetition();
    
    if (!success) {
      return NextResponse.json({
        success: false,
        message: '取消當前競賽失敗',
        error: '無法取消當前競賽'
      }, { status: 500 });
    }

    return NextResponse.json({
      success: true,
      message: '當前競賽已取消'
    });

  } catch (error) {
    console.error('取消當前競賽失敗:', error);
    return NextResponse.json({
      success: false,
      message: '取消當前競賽失敗',
      error: error instanceof Error ? error.message : '未知錯誤'
    }, { status: 500 });
  }
}