// app/api/transcoder/fail/[videoId]/route.ts
// Marks a video job as failed. Called by the remote worker when transcoding
// or upload encounters an unrecoverable error.

import { NextResponse } from "next/server";
import { prisma } from "@/lib/prisma";
import { verifyTranscoderToken } from "@/lib/transcoder-auth";

const SAFE_ID = /^[a-zA-Z0-9_-]{1,64}$/;

export async function POST(
  request: Request,
  context: { params: Promise<{ videoId: string }> }
) {
  if (!verifyTranscoderToken(request)) {
    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
  }

  const { videoId } = await context.params;

  if (!SAFE_ID.test(videoId)) {
    return NextResponse.json({ error: "Invalid video ID" }, { status: 400 });
  }

  const video = await prisma.video.findUnique({ where: { id: videoId } });
  if (!video) {
    return NextResponse.json({ error: "Not found" }, { status: 404 });
  }

  try {
    await prisma.video.update({
      where: { id: videoId },
      data: { transcodingStatus: "failed" },
    });

    // Log the error message from the worker if provided.
    let workerError = "";
    try {
      const body = await request.json();
      workerError = typeof body?.error === "string" ? body.error : "";
    } catch {
      // Body may be empty – that's fine.
    }

    console.error(
      `[Transcoder Fail] ${videoId}${workerError ? ` – ${workerError}` : ""}`
    );

    return NextResponse.json({ success: true });
  } catch (err) {
    console.error(`[Transcoder Fail] DB error for ${videoId}:`, err);
    return NextResponse.json({ error: "Internal server error" }, { status: 500 });
  }
}