import { NextResponse } from "next/server";
import { prisma } from "@/lib/prisma";

// GET /api/traces/[id] — Get single trace with all relations
export async function GET(
  _request: Request,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const { id } = await params;

    if (!id || typeof id !== "string") {
      return NextResponse.json({ error: "Invalid trace ID" }, { status: 400 });
    }

    const trace = await prisma.trace.findUnique({
      where: { id },
      include: {
        decisionPoints: {
          orderBy: {
            timestamp: "asc",
          },
        },
        spans: {
          orderBy: {
            startedAt: "asc",
          },
        },
        events: {
          orderBy: {
            timestamp: "asc",
          },
        },
      },
    });

    if (!trace) {
      return NextResponse.json({ error: "Trace not found" }, { status: 404 });
    }

    return NextResponse.json({ trace }, { status: 200 });
  } catch (error) {
    console.error("Error retrieving trace:", error);
    return NextResponse.json({ error: "Internal server error" }, { status: 500 });
  }
}