import { NextRequest, NextResponse } from 'next/server'
import { prisma } from '@/lib/prisma'
import { verifyToken } from '@/lib/auth'

export async function GET(
  request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const { id } = await params
    
    const authHeader = request.headers.get('authorization')
    if (!authHeader || !authHeader.startsWith('Bearer ')) {
      return NextResponse.json(
        { message: '请先登录' },
        { status: 401 }
      )
    }

    const token = authHeader.substring(7)
    const decoded = verifyToken(token)
    if (!decoded) {
      return NextResponse.json(
        { message: '登录已过期' },
        { status: 401 }
      )
    }

    const order = await prisma.order.findFirst({
      where: { 
        id: id,
        userId: decoded.userId
      },
      include: {
        orderItems: {
          include: {
            component: {
              include: {
                componentType: true
              }
            }
          }
        },
        user: {
          select: {
            username: true,
            email: true
          }
        }
      }
    })

    if (!order) {
      return NextResponse.json(
        { message: '订单不存在' },
        { status: 404 }
      )
    }

    return NextResponse.json(order)
  } catch (error) {
    console.error('获取订单详情失败:', error)
    return NextResponse.json(
      { message: '获取订单详情失败' },
      { status: 500 }
    )
  }
}

export async function PUT(
  request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const { id } = await params
    
    const authHeader = request.headers.get('authorization')
    if (!authHeader || !authHeader.startsWith('Bearer ')) {
      return NextResponse.json(
        { message: '请先登录' },
        { status: 401 }
      )
    }

    const token = authHeader.substring(7)
    const decoded = verifyToken(token)
    if (!decoded) {
      return NextResponse.json(
        { message: '登录已过期' },
        { status: 401 }
      )
    }

    const { action } = await request.json()

    // 查找订单
    const order = await prisma.order.findFirst({
      where: { 
        id: id,
        userId: decoded.userId
      },
      include: {
        orderItems: true
      }
    })

    if (!order) {
      return NextResponse.json(
        { message: '订单不存在' },
        { status: 404 }
      )
    }

    // 处理不同的操作
    if (action === 'cancel') {
      // 只有待确认状态的订单可以取消
      if (order.status !== 'PENDING') {
        return NextResponse.json(
          { message: '当前订单状态不允许取消' },
          { status: 400 }
        )
      }      // 更新订单状态为取消
      const updatedOrder = await prisma.order.update({
        where: { id: id },
        data: { status: 'CANCELLED' },
        include: {
          orderItems: {
            include: {
              component: {
                include: {
                  componentType: true
                }
              }
            }
          }
        }
      })

      // 恢复库存
      for (const item of order.orderItems) {
        await prisma.component.update({
          where: { id: item.componentId },
          data: {
            stock: {
              increment: item.quantity
            }
          }
        })
      }

      return NextResponse.json(updatedOrder)
    }

    return NextResponse.json(
      { message: '不支持的操作' },
      { status: 400 }
    )
  } catch (error) {
    console.error('更新订单失败:', error)
    return NextResponse.json(
      { message: '更新订单失败' },
      { status: 500 }
    )
  }
}