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 { id } = await params

    const review = await prisma.review.findUnique({
      where: { id },
      include: {
        user: {
          select: {
            id: true,
            name: true,
            image: true,
          }
        },
        product: {
          select: {
            id: true,
            name: true,
          }
        },
        _count: {
          select: {
            helpfulVotedBy: true,
            reportedBy: true,
          }
        }
      }
    })

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

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

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

    const { id } = await params
    const body = await request.json()
    const { rating, title, comment, images } = body

    // Find the review and check ownership
    const existingReview = await prisma.review.findUnique({
      where: { id }
    })

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

    if (existingReview.userId !== session.user.id) {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 403 })
    }

    // Validate rating if provided
    if (rating && (rating < 1 || rating > 5)) {
      return NextResponse.json(
        { error: 'Rating must be between 1 and 5' },
        { status: 400 }
      )
    }

    const updatedReview = await prisma.review.update({
      where: { id },
      data: {
        ...(rating && { rating }),
        ...(title !== undefined && { title }),
        ...(comment !== undefined && { comment }),
        ...(images && { images }),
        isApproved: false, // Reset approval status when edited
      },
      include: {
        user: {
          select: {
            id: true,
            name: true,
            image: true,
          }
        },
        product: {
          select: {
            id: true,
            name: true,
          }
        }
      }
    })

    return NextResponse.json({
      review: updatedReview,
      message: 'Review updated successfully. It will be visible after admin approval.'
    })
  } catch (error) {
    console.error('Error updating review:', error)
    return NextResponse.json(
      { error: 'Failed to update review' },
      { status: 500 }
    )
  }
}

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

    const { id } = await params

    // Find the review and check ownership or admin access
    const existingReview = await prisma.review.findUnique({
      where: { id }
    })

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

    if (existingReview.userId !== session.user.id && session.user.role !== 'ADMIN') {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 403 })
    }

    await prisma.review.delete({
      where: { id }
    })

    return NextResponse.json({ message: 'Review deleted successfully' })
  } catch (error) {
    console.error('Error deleting review:', error)
    return NextResponse.json(
      { error: 'Failed to delete review' },
      { status: 500 }
    )
  }
}