Artifacts

import { NextResponse } from "next/server";
import { transitionMission, MissionError } from "@/lib/missions/manager";
import type { MissionStatus } from "@/lib/missions/types";

/**
 * Transition a mission to a new lifecycle state (PASS M1).
 *
 *   POST /api/missions/:id/transition   { to, reason? }
 *
 * Invalid transitions are rejected by the state machine.
 */

export const runtime = "nodejs";
export const dynamic = "force-dynamic";

export async function POST(
  request: Request,
  { params }: { params: { id: string } },
) {
  let body: { to?: MissionStatus; reason?: string };
  try {
    body = await request.json();
  } catch {
    return NextResponse.json({ error: "Invalid JSON." }, { status: 400 });
  }
  if (!body.to) {
    return NextResponse.json({ error: "Target state 'to' is required." }, { status: 400 });
  }
  try {
    const mission = transitionMission(params.id, body.to, { reason: body.reason });
    return NextResponse.json({ ok: true, mission });
  } catch (err) {
    if (err instanceof MissionError) {
      return NextResponse.json({ error: err.message }, { status: err.status });
    }
    const message = err instanceof Error ? err.message : "Transition failed.";
    return NextResponse.json({ error: message }, { status: 500 });
  }
}