// =====================================================
// 評審管理 API
// =====================================================

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

// 獲取所有評審
export async function GET(request: NextRequest) {
  try {
    const { searchParams } = new URL(request.url);
    const search = searchParams.get('search') || '';
    const department = searchParams.get('department') || '';
    const expertise = searchParams.get('expertise') || '';
    
    let judges = await JudgeService.getAllJudges();
    
    // 應用篩選
    if (search) {
      judges = judges.filter(judge => 
        judge.name.toLowerCase().includes(search.toLowerCase()) ||
        judge.title.toLowerCase().includes(search.toLowerCase())
      );
    }
    
    if (department && department !== 'all') {
      judges = judges.filter(judge => judge.department === department);
    }
    
    if (expertise && expertise !== 'all') {
      judges = judges.filter(judge => 
        judge.expertise.some(exp => exp.toLowerCase().includes(expertise.toLowerCase()))
      );
    }
    
    return NextResponse.json({
      success: true,
      message: '評審列表獲取成功',
      data: judges
    });

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

// 創建新評審
export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    const {
      name,
      title,
      department,
      expertise = [],
      avatar,
      isActive = true
    } = body;

    // 驗證必填欄位
    if (!name || !title || !department) {
      return NextResponse.json({
        success: false,
        message: '缺少必填欄位',
        error: 'name, title, department 為必填欄位'
      }, { status: 400 });
    }

    // 驗證姓名長度
    if (name.length < 2 || name.length > 50) {
      return NextResponse.json({
        success: false,
        message: '姓名長度無效',
        error: '姓名長度必須在 2-50 個字符之間'
      }, { status: 400 });
    }

    // 驗證職稱長度
    if (title.length < 2 || title.length > 100) {
      return NextResponse.json({
        success: false,
        message: '職稱長度無效',
        error: '職稱長度必須在 2-100 個字符之間'
      }, { status: 400 });
    }

    // 驗證專業領域
    if (!Array.isArray(expertise)) {
      return NextResponse.json({
        success: false,
        message: '專業領域格式無效',
        error: 'expertise 必須是陣列格式'
      }, { status: 400 });
    }

    // 檢查是否已存在相同姓名的評審
    const existingJudge = await JudgeService.getJudgeByName(name);
    if (existingJudge) {
      return NextResponse.json({
        success: false,
        message: '評審已存在',
        error: '該姓名的評審已存在'
      }, { status: 409 });
    }

    // 創建評審
    const judgeData = {
      name: name.trim(),
      title: title.trim(),
      department: department.trim(),
      expertise: expertise.map((exp: string) => exp.trim()).filter(Boolean),
      avatar: avatar || null,
      is_active: isActive
    };

    const newJudge = await JudgeService.createJudge(judgeData);

    return NextResponse.json({
      success: true,
      message: '評審創建成功',
      data: newJudge
    });

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