import { NextRequest, NextResponse } from "next/server";
import { prisma } from "@/lib/prisma";
import { loadVersionData } from "@/lib/storage";

export async function GET(
  request: NextRequest,
  { params }: { params: { id: string; versionId: string } }
) {
  const version = await prisma.fileVersion.findUnique({
    where: { id: params.versionId },
    include: { file: true },
  });

  if (!version || version.fileId !== params.id) {
    return NextResponse.json({ error: "Version not found" }, { status: 404 });
  }

  // Les versions sont des copies du fichier (même état de chiffrement que le fichier courant)
  const data = await loadVersionData(version.storagePath, version.file.isEncrypted);

  return new NextResponse(new Uint8Array(data), {
    headers: {
      "Content-Type": "application/octet-stream",
      "Content-Disposition": `attachment; filename="${encodeURIComponent(version.file.name)}"`,
      "Content-Length": String(data.length),
    },
  });
}