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/modifier_physics_scene.blend"));
const fixtureSha256 = crypto.createHash("sha256").update(fixture).digest("hex");

test("WBV2-P1117-000 preserves Physics manifest Main persistence and validation", 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 physics = (snapshot: any) => JSON.stringify(snapshot.physicsSimulation ?? { schemaVersion: 1, systems: [] });
    let stage = "open";
    try {
      const opened = await client.openBlend(Uint8Array.from(input.bytes).buffer);
      const manifest = { schemaVersion: 1, systems: [{ id: "physics:web-test", family: "RIGID_BODY", ownerObjectId: "object:PhysicsBuild", settingsHash: "a".repeat(64), settings: { mass: 1.5 }, dependencyIds: [] }] };
      const before = physics(opened.snapshot);
      stage = "apply";
      const applied = await client.applyCommand({ type: "setPhysicsSimulation", manifest } as any);
      const after = physics(applied.snapshot);
      stage = "undo";
      const undo = await client.applyCommand({ type: "undo" } as any);
      stage = "redo";
      const redo = await client.applyCommand({ type: "redo" } as any);
      const malformedManifest = { ...manifest, systems: [{ ...manifest.systems[0], ownerObjectId: "object:missing" }] };
      stage = "malformed";
      const malformed = await client.applyCommand({ type: "setPhysicsSimulation", manifest: malformedManifest } as any).then(() => ({ code: "NO_ERROR" })).catch((error: any) => ({ code: error?.code, message: error?.message }));
      stage = "snapshot-after-malformed";
      const afterMalformed = await client.snapshot();
      stage = "save";
      const saved = await client.saveBlend();
      stage = "reopen";
      const reopened = await reopenedClient.openBlend(saved.slice(0));
      return { fixtureSha256: input.fixtureSha256, manifest, systemCount: manifest.systems.length, before, after, undo: physics(undo.snapshot), redo: physics(redo.snapshot), malformed, malformedRevisionPreserved: afterMalformed.snapshot.revision === redo.snapshot.revision, reopened: physics(reopened.snapshot), revisions: [opened.snapshot.revision, applied.snapshot.revision, undo.snapshot.revision, 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), stage } } as any; }
    finally { client.terminate(); reopenedClient.terminate(); }
  }, { bytes: Array.from(fixture), fixtureSha256 });
  fs.mkdirSync(path.join(root, "tests/golden/WBV2-P1117-000"), { recursive: true });
  fs.writeFileSync(path.join(root, "tests/golden/WBV2-P1117-000/physics-manifest-production.json"), `${JSON.stringify({ schemaVersion: 1, task: "WBV2-P1117-000", operation: "PHYSICS_MANIFEST_MAIN_CHROMIUM", browser: "chromium", queueMutation: false, ...result }, null, 2)}\n`);
  expect(result.error).toBeUndefined();
  expect(result.fixtureSha256).toBe(fixtureSha256);
  expect(result.systemCount).toBeGreaterThan(0);
  expect(JSON.parse(result.after)).toEqual(result.manifest);
  expect(result.revisions).toEqual([result.revisions[0], result.revisions[0] + 1, result.revisions[0] + 2, result.revisions[0] + 3]);
  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);
});