import path from "path";
import { runStoryPipeline } from "@/lib/pipeline/pipeline";

export const runtime = "nodejs";
export const dynamic = "force-dynamic";
export const maxDuration = 300; // seconds

type RunBody = {
  storyName: string;
  force?: boolean;
  skipUpload?: boolean;
  concurrency?: number;
};

function isRunBody(value: unknown): value is RunBody {
  if (typeof value !== "object" || value === null) return false;
  const v = value as Record<string, unknown>;
  return typeof v.storyName === "string";
}

export async function POST(request: Request) {
  const bodyUnknown: unknown = await request.json().catch(() => null);

  if (!isRunBody(bodyUnknown)) {
    return Response.json({ ok: false, error: "'storyName' is required" }, { status: 400 });
  }

  const storyName = bodyUnknown.storyName;
  const force = !!bodyUnknown.force;
  const skipUpload = !!bodyUnknown.skipUpload;
  const concurrency = Math.max(1, Math.min(10, Number(bodyUnknown.concurrency) || 3));

  // Keep using repo root for stories unless you move them into the Next.js folder
  const baseDir = path.resolve(process.cwd(), "..");

  try {
    const result = await runStoryPipeline(storyName, { force, skipUpload, concurrency, baseDir });
    return Response.json({ ok: true, result });
  } catch (error: unknown) {
    const message = error instanceof Error ? error.message : String(error);
    return Response.json({ ok: false, error: message }, { status: 500 });
  }
}