import { NextRequest, NextResponse } from 'next/server';
import pool from '@/lib/db';
import { getAllFields } from '@/lib/field-mapping';

// GET - 获取所有配置
export async function GET() {
  try {
    const [configs] = await pool.execute<any[]>(
      'SELECT * FROM t_daily_report_config WHERE is_active = 1 ORDER BY create_time DESC'
    );
    
    return NextResponse.json({ 
      success: true, 
      data: configs,
      availableFields: getAllFields()
    });
  } catch (error) {
    return NextResponse.json({ 
      success: false, 
      message: '获取配置失败',
      error: error instanceof Error ? error.message : '未知错误'
    }, { status: 500 });
  }
}

// POST - 创建新配置
export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    const { config_name, split_type, selected_fields } = body;
    
    // 验证必填字段
    if (!config_name || !split_type || !selected_fields || selected_fields.length === 0) {
      return NextResponse.json({ 
        success: false, 
        message: '缺少必填字段' 
      }, { status: 400 });
    }
    
    // 验证拆分方式
    if (split_type !== 'company_id' && split_type !== 'user_id') {
      return NextResponse.json({ 
        success: false, 
        message: '拆分方式必须是 company_id 或 user_id' 
      }, { status: 400 });
    }
    
    // 插入配置
    const [result] = await pool.execute(
      `INSERT INTO t_daily_report_config (config_name, split_type, selected_fields) 
       VALUES (?, ?, ?)`,
      [config_name, split_type, JSON.stringify(selected_fields)]
    );
    
    return NextResponse.json({ 
      success: true, 
      message: '配置创建成功',
      data: result
    });
  } catch (error) {
    return NextResponse.json({ 
      success: false, 
      message: '创建配置失败',
      error: error instanceof Error ? error.message : '未知错误'
    }, { status: 500 });
  }
}