import { NextRequest, NextResponse } from "next/server";
import { toErrorResponse, PipelineError } from "@/lib/render-pipeline/errors";
import { requirePipelineUser, requirePipelineAdmin } from "@/lib/render-pipeline/session-auth";
import { updateMachine, type MachineAvailability } from "@/lib/render-pipeline/machines";

// ── PATCH /api/machines/{machineId} ──────────────────────────────────────────
//
// Body (all optional):
//   enabled: boolean          — admin kill-switch (admin/producer/supervisor)
//   availability: {...}|null  — §7.10 schedule config (admin/producer/supervisor)
//   renderNowHours: number|0  — "Render Now" override (any studio user);
//                               0 or null clears it

export async function PATCH(
  req: NextRequest,
  { params }: { params: Promise<{ machineId: string }> }
) {
  try {
    const { machineId } = await params;
    let body: { enabled?: boolean; availability?: MachineAvailability | null; renderNowHours?: number | null };
    try {
      body = await req.json();
    } catch {
      throw new PipelineError(400, "Invalid JSON");
    }

    // Render Now is available to every studio user (§7.10); enable/disable and
    // availability windows are admin-level controls.
    if (body.enabled !== undefined || body.availability !== undefined) {
      await requirePipelineAdmin();
    } else {
      await requirePipelineUser();
    }

    const result = await updateMachine(machineId, body);
    return NextResponse.json(result);
  } catch (err) {
    const { body, status } = toErrorResponse(err);
    return NextResponse.json(body, { status });
  }
}