import fs from "node:fs";
import path from "node:path";
import { test, expect } from "@playwright/test";
import { NativeUIWorkflow, observeNative } from "../fixtures/native-ui-workflow";

const root = path.resolve(import.meta.dirname, "../../..");
const fixture = path.join(root, "tests/files/web/basic_scene.blend");

test("probe undo after pack_all with no external images", async ({ page }, testInfo) => {
  test.setTimeout(180_000);
  await observeNative(page);
  await page.goto("/");
  const flow = new NativeUIWorkflow(page, testInfo.outputPath("cases"));
  await flow.command(() => page.getByTestId("blend-file-input").setInputFiles(fixture));
  await expect(page.getByTestId("engine-status")).toContainText("SceneIR", { timeout: 60000 });
  const out = await page.evaluate(async () => {
    const worker = (window as any).__nativeWorkflowEngine as Worker;
    const send = (command: any) => new Promise<any>((resolve, reject) => {
      const requestId = `nf-${crypto.randomUUID()}`;
      const receive = (event: MessageEvent) => {
        if (event.data?.requestId !== requestId || event.data?.kind !== 'result') return;
        worker.removeEventListener('message', receive);
        if (event.data.ok) resolve(event.data.result); else reject(new Error(`${event.data.error?.code}: ${event.data.error?.message}`));
      };
      worker.addEventListener('message', receive); worker.postMessage({ requestId, command });
    });
    const log: any = {};
    const py = (source: string) => send({ type: 'jsonCommand', cmd: 'pythonExec', params: { source, filename: 'Nf.py', console: false } });
    const r = await py("import bpy\nprint('PACK', bpy.ops.file.pack_all())\nprint('IMAGES', len(bpy.data.images))");
    log.pack = String(r.json?.output ?? '').slice(0, 300);
    log.packState = r.json?.state;
    try { const u = await send({ type: 'applyCommand', payload: { type: 'undo' } }); log.undo = { revision: u.snapshot?.revision }; }
    catch (e: any) { log.undo = String(e?.message ?? e).slice(0, 260); }
    return log;
  });
  fs.writeFileSync("/tmp/pack-nofile.json", JSON.stringify(out, null, 2));
});