import { NextResponse } from "next/server"
import { prisma } from "@/lib/prisma"
import type { Folder } from "@/lib/types"

export async function POST(request: Request) {
  try {
    const folder: Omit<Folder, "id"> = await request.json()

    const created = await prisma.folder.create({
      data: {
        name: folder.name,
        parentId: folder.parentId,
        color: folder.color,
        icon: folder.icon,
      },
    })

    return NextResponse.json(created)
  } catch (error) {
    console.error("Error creating folder:", error)
    return NextResponse.json({ error: "Failed to create folder" }, { status: 500 })
  }
}

export async function PUT(request: Request) {
  try {
    const folder: Folder = await request.json()

    const updated = await prisma.folder.update({
      where: { id: folder.id },
      data: {
        name: folder.name,
        parentId: folder.parentId,
        color: folder.color,
        icon: folder.icon,
      },
    })

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

export async function DELETE(request: Request) {
  try {
    const { searchParams } = new URL(request.url)
    const id = searchParams.get("id")

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

    const folder = await prisma.folder.findUnique({
      where: { id },
      include: { children: true },
    })

    if (!folder) {
      return NextResponse.json({ error: "Folder not found" }, { status: 404 })
    }

    // Move accounts to root (null)
    await prisma.account.updateMany({
      where: { folderId: id },
      data: { folderId: null },
    })

    // Move subfolders to parent
    if (folder.parentId) {
      await prisma.folder.updateMany({
        where: { parentId: id },
        data: { parentId: folder.parentId },
      })
    } else {
      // If no parent, move to null (root)
      await prisma.folder.updateMany({
        where: { parentId: id },
        data: { parentId: null },
      })
    }

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

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