import { NextRequest, NextResponse } from 'next/server'
import { prisma } from '@/lib/prisma'
import { auth } from '@/lib/auth'
import { v4 as uuidv4 } from 'uuid'

// GET /api/levels - Get all levels
export async function GET(request: NextRequest) {
  try {
    const session = await auth.api.getSession({
      headers: request.headers,
    })

    if (!session) {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }

    const levels = await prisma.level.findMany({
      orderBy: { sortOrder: 'asc' },
    })

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

// POST /api/levels - Create a new level
export async function POST(request: NextRequest) {
  try {
    const session = await auth.api.getSession({
      headers: request.headers,
    })

    if (!session) {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }

    const body = await request.json()
    const { imageUrl, answer, hint1, hint2, hint3 } = body

    if (!imageUrl || !answer) {
      return NextResponse.json(
        { error: 'imageUrl and answer are required' },
        { status: 400 }
      )
    }

    // Get max sort order
    const maxSortOrder = await prisma.level.aggregate({
      _max: { sortOrder: true },
    })

    const sortOrder = (maxSortOrder._max.sortOrder || 0) + 1

    const level = await prisma.level.create({
      data: {
        id: uuidv4(),
        imageUrl,
        answer,
        hint1: hint1 || null,
        hint2: hint2 || null,
        hint3: hint3 || null,
        sortOrder,
      },
    })

    return NextResponse.json(level, { status: 201 })
  } catch (error) {
    console.error('Error creating level:', error)
    return NextResponse.json(
      { error: 'Failed to create level' },
      { status: 500 }
    )
  }
}

// PUT /api/levels - Update a level
export async function PUT(request: NextRequest) {
  try {
    const session = await auth.api.getSession({
      headers: request.headers,
    })

    if (!session) {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }

    const body = await request.json()
    const { id, imageUrl, answer, hint1, hint2, hint3 } = body

    if (!id) {
      return NextResponse.json({ error: 'id is required' }, { status: 400 })
    }

    const level = await prisma.level.update({
      where: { id },
      data: {
        imageUrl,
        answer,
        hint1: hint1 || null,
        hint2: hint2 || null,
        hint3: hint3 || null,
      },
    })

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

// DELETE /api/levels - Delete a level
export async function DELETE(request: NextRequest) {
  try {
    const session = await auth.api.getSession({
      headers: request.headers,
    })

    if (!session) {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }

    const { searchParams } = new URL(request.url)
    const id = searchParams.get('id')

    if (!id) {
      return NextResponse.json({ error: 'id is required' }, { status: 400 })
    }

    await prisma.level.delete({
      where: { id },
    })

    return NextResponse.json({ success: true })
  } catch (error) {
    console.error('Error deleting level:', error)
    return NextResponse.json(
      { error: 'Failed to delete level' },
      { status: 500 }
    )
  }
}