import { NextResponse } from "next/server"
import { and, eq } from "drizzle-orm"
import { db } from "@/lib/db"
import { documents } from "@/lib/db/schema"
import { getSessionUser } from "@/lib/session"
import { deleteFile } from "@/lib/storage"
import { getEffectiveOwnerId, getAccountContext } from "@/lib/account"

export async function GET(_: Request, { params }: { params: Promise<{ id: string }> }) {
  const user = await getSessionUser()
  if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 })

  const ownerId = await getEffectiveOwnerId(user.id)

  const { id } = await params
  const doc = await db.query.documents.findFirst({
    where: and(eq(documents.id, id), eq(documents.user_id, ownerId)),
  })

  if (!doc) return NextResponse.json({ error: "Not found" }, { status: 404 })

  // file_url already points at the auth-gated /api/files route; expose it as
  // signed_url for compatibility with the existing client.
  return NextResponse.json({ ...doc, signed_url: doc.file_url })
}

export async function DELETE(_: Request, { params }: { params: Promise<{ id: string }> }) {
  const user = await getSessionUser()
  if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 })

  const ctx = await getAccountContext(user.id)
  const ownerId = ctx.ownerId
  if (!ctx.canWrite) return NextResponse.json({ error: "Forbidden" }, { status: 403 })

  const { id } = await params

  const doc = await db.query.documents.findFirst({
    where: and(eq(documents.id, id), eq(documents.user_id, ownerId)),
    columns: { storage_path: true },
  })

  if (!doc) return NextResponse.json({ error: "Not found" }, { status: 404 })

  await db.delete(documents).where(and(eq(documents.id, id), eq(documents.user_id, ownerId)))

  if (doc.storage_path) {
    await deleteFile(doc.storage_path, ownerId)
  }

  return NextResponse.json({ success: true })
}
