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

const root = path.resolve(import.meta.dirname, "../../..");
const fixture = path.join(root, "blender-5.2.0/tests/files/sequence_editing/effects/fx_comp.blend");

test("undo after python exec passes the replacement guard", async ({ page }) => {
  test.setTimeout(300_000);
  await observeNative(page);
  await page.goto("/");
  await page.getByTestId("blend-file-input").setInputFiles(fixture);
  await expect.poll(async () => page.locator("main.blender-app").evaluate((n) => (n as HTMLElement).dataset.projectId), { timeout: 60000 }).toBe("fx_comp");
  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 = `guard-${crypto.randomUUID()}`;
      const receive = (event: MessageEvent) => {
        if (event.data?.requestId !== requestId || event.data?.kind !== 'result') return;
        worker.removeEventListener('message', receive);
        if (event.data.ok) resolve(event.data.result); else reject(Object.assign(new Error(`${event.data.error?.code}: ${event.data.error?.message}`), { detail: event.data.error }));
      };
      worker.addEventListener('message', receive); worker.postMessage({ requestId, command });
    });
    const hex = (buf: ArrayBuffer) => crypto.subtle.digest('SHA-256', buf).then((h) => Array.from(new Uint8Array(h), (b) => b.toString(16).padStart(2, '0')).join('').slice(0, 16));
    const bytes = async () => hex((await send({ type: 'saveBlend' })).blend as ArrayBuffer);
    const brief = (r: any) => r?.status ?? r?.json?.state ?? 'ok';
    const log: any = { base: await bytes() };
    log.exec = await send({ type: 'jsonCommand', cmd: 'pythonExec', params: { source: 'import bpy\nbpy.context.scene.name = bpy.context.scene.name\n', filename: 'Probe.py', console: false } }).then(brief, (e: Error) => `ERR ${e.message}`);
    log.afterExec = await bytes();
    log.undo = await send({ type: 'applyCommand', payload: { type: 'undo' } }).then(brief, (e: Error) => `ERR ${e.message}`);
    log.afterUndo = await bytes().catch((e: Error) => `ERR ${e.message}`);
    log.redo = await send({ type: 'applyCommand', payload: { type: 'redo' } }).then(brief, (e: Error) => `ERR ${e.message}`);
    log.afterRedo = await bytes().catch((e: Error) => `ERR ${e.message}`);
    log.undo2 = await send({ type: 'applyCommand', payload: { type: 'undo' } }).then(brief, (e: Error) => `ERR ${e.message}`);
    log.afterUndo2 = await bytes().catch((e: Error) => `ERR ${e.message}`);
    return log;
  });
  fs.writeFileSync("/tmp/reset-guard-verify.json", JSON.stringify(out, null, 2));
});