import crypto from "node:crypto";
import fs from "node:fs";
import path from "node:path";
import { expect, test } from "@playwright/test";

const root = path.resolve(import.meta.dirname, "../../..");
const fixture = fs.readFileSync(path.join(root, "tests/files/web/nla_time_mapping_scene.blend"));
const fixtureSha256 = crypto.createHash("sha256").update(fixture).digest("hex");

test("WBV2-P1112-000 preserves setNLAStack Main submission and rejects invalid actions", async ({ page }) => {
  test.setTimeout(180_000);
  await page.goto("/");
  const result = await page.evaluate(async (input) => {
    const { WebEngineClient } = await import("/src/engine-client/WebEngineClient.ts");
    const client = new WebEngineClient({ timeoutMs: 60_000 });
    const reopenedClient = new WebEngineClient({ timeoutMs: 60_000 });
    const stack = (snapshot: any) => JSON.stringify(snapshot.nlaTracks ?? []);
    try {
      const opened = await client.openBlend(Uint8Array.from(input.bytes).buffer);
      const ownerId = opened.snapshot.nlaTracks?.[0]?.ownerId;
      if (!ownerId || !opened.snapshot.nlaTracks?.length) throw new Error("NLA fixture has no tracks");
      const before = stack(opened.snapshot);
      const applied = await client.applyCommand({ type: "setNLAStack", objectId: ownerId, tracks: opened.snapshot.nlaTracks, baseRevision: opened.snapshot.revision } as any);
      const after = stack(applied.snapshot);
      const undo = await client.applyCommand({ type: "undo" } as any);
      const redo = await client.applyCommand({ type: "redo" } as any);
      const malformedTracks = opened.snapshot.nlaTracks.map((track: any) => ({ ...track, strips: track.strips.map((strip: any) => ({ ...strip, actionId: "action:missing" })) }));
      const malformed = await client.applyCommand({ type: "setNLAStack", objectId: ownerId, tracks: malformedTracks, baseRevision: redo.snapshot.revision } as any).then(() => ({ code: "NO_ERROR" })).catch((error: any) => ({ code: error?.code, message: error?.message }));
      const afterMalformed = await client.snapshot();
      const saved = await client.saveBlend();
      const reopened = await reopenedClient.openBlend(saved.slice(0));
      return { fixtureSha256: input.fixtureSha256, ownerId, before, after, undo: stack(undo.snapshot), redo: stack(redo.snapshot), malformed, malformedRevisionPreserved: afterMalformed.snapshot.revision === redo.snapshot.revision, reopened: stack(reopened.snapshot), beforeRevision: opened.snapshot.revision, appliedRevision: applied.snapshot.revision, undoRevision: undo.snapshot.revision, redoRevision: redo.snapshot.revision, reopenedRevision: reopened.snapshot.revision, savedSha256: await crypto.subtle.digest("SHA-256", saved).then((hash) => Array.from(new Uint8Array(hash), (byte) => byte.toString(16).padStart(2, "0")).join("")) };
    }
    catch (error: any) { return { error: { code: error?.code, message: error?.message, detail: String(error) } } as any; }
    finally { client.terminate(); reopenedClient.terminate(); }
  }, { bytes: Array.from(fixture), fixtureSha256 });
  fs.mkdirSync(path.join(root, "tests/golden/WBV2-P1112-000"), { recursive: true });
  fs.writeFileSync(path.join(root, "tests/golden/WBV2-P1112-000/nla-stack-production.json"), `${JSON.stringify({ schemaVersion: 1, task: "WBV2-P1112-000", operation: "NLA_STACK_MAIN_CHROMIUM", browser: "chromium", queueMutation: false, ...result }, null, 2)}\n`);
  expect(result.error).toBeUndefined();
  expect(result.fixtureSha256).toBe(fixtureSha256);
  expect(result.after).toBe(result.before);
  expect(result.appliedRevision).toBe(result.beforeRevision + 1);
  expect(result.undo).toBe(result.before);
  expect(result.redo).toBe(result.after);
  expect(result.malformed.code).not.toBe("NO_ERROR");
  expect(result.malformedRevisionPreserved).toBe(true);
  expect(result.reopened).toBe(result.after);
  expect(result.reopenedRevision).toBe(1);
  expect(result.savedSha256).not.toBe(fixtureSha256);
});