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

export async function GET(
  request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const session = await auth()
    
    if (!session?.user || session.user.role !== 'ADMIN') {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }

    const { id } = await params

    const order = await prisma.order.findUnique({
      where: { id },
      include: {
        user: {
          select: {
            id: true,
            name: true,
            email: true,
            phone: true
          }
        },
        orderItems: {
          include: {
            product: {
              select: {
                id: true,
                name: true,
                images: true,
                sku: true,
                price: true
              }
            }
          }
        },
        shippingAddress: {
          select: {
            firstName: true,
            lastName: true,
            company: true,
            address1: true,
            address2: true,
            city: true,
            state: true,
            zipCode: true,
            country: true,
            phone: true
          }
        }
      }
    })

    if (!order) {
      return NextResponse.json({ error: 'Order not found' }, { status: 404 })
    }

    return NextResponse.json(order)
  } catch (error) {
    console.error('Error fetching order:', error)
    return NextResponse.json(
      { error: 'Failed to fetch order' },
      { status: 500 }
    )
  }
}

export async function PATCH(
  request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const session = await auth()
    
    if (!session?.user || session.user.role !== 'ADMIN') {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }

    const { id } = await params
    const body = await request.json()
    const { status } = body

    if (!['PENDING', 'PAID', 'SHIPPED', 'DELIVERED', 'CANCELLED'].includes(status)) {
      return NextResponse.json(
        { error: 'Invalid status' },
        { status: 400 }
      )
    }

    const order = await prisma.order.update({
      where: { id },
      data: {
        status,
        updatedAt: new Date()
      },
      include: {
        user: {
          select: {
            id: true,
            name: true,
            email: true,
            phone: true
          }
        },
        orderItems: {
          include: {
            product: {
              select: {
                id: true,
                name: true,
                images: true,
                sku: true,
                price: true
              }
            }
          }
        },
        shippingAddress: {
          select: {
            firstName: true,
            lastName: true,
            company: true,
            address1: true,
            address2: true,
            city: true,
            state: true,
            zipCode: true,
            country: true,
            phone: true
          }
        }
      }
    })

    return NextResponse.json(order)
  } catch (error) {
    console.error('Error updating order:', error)
    return NextResponse.json(
      { error: 'Failed to update order' },
      { status: 500 }
    )
  }
}