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

test("WBV2-P1132-001 preserves the setCurveHandle Main command", 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 summary = (snapshot: any, dataId: string, pointIndex: number) => {
      const curve = snapshot.nonMeshData?.find((entry: any) => entry.id === dataId);
      if (!curve) throw new Error(`curve missing: ${dataId}`);
      const packed = (curve.handlePointIndices ?? []).indexOf(pointIndex);
      if (packed < 0 || !curve.handlePoints) throw new Error("curve handle metadata missing");
      return { revision: snapshot.revision, position: [...curve.handlePoints.slice(packed * 6, packed * 6 + 3)] };
    };
    try {
      const opened = await client.openBlend(Uint8Array.from(input.bytes).buffer);
      const curve = opened.snapshot.nonMeshData?.find((entry: any) => entry.type === "CURVE" && entry.handlePoints?.length && entry.handlePointIndices?.length);
      if (!curve) throw new Error("fixture has no Bezier Curve handle data");
      const dataId = curve.id as string;
      const pointIndex = curve.handlePointIndices[0] as number;
      const before = summary(opened.snapshot, dataId, pointIndex);
      const edited = await client.applyCommand({ type: "setCurveHandle", dataId, pointIndex, side: "LEFT", position: [before.position[0] + 0.25, before.position[1], before.position[2]] } as any);
      const afterEdit = summary(edited.snapshot, dataId, pointIndex);
      const undo = await client.applyCommand({ type: "undo" } as any);
      const afterUndo = summary(undo.snapshot, dataId, pointIndex);
      const redo = await client.applyCommand({ type: "redo" } as any);
      const afterRedo = summary(redo.snapshot, dataId, pointIndex);
      const malformed = await client.applyCommand({ type: "setCurveHandle", dataId, pointIndex, side: "CENTER", position: afterRedo.position } as any).then(() => ({ code: "NO_ERROR" })).catch((error: any) => ({ code: error?.code, message: error?.message }));
      const afterMalformed = summary((await client.snapshot()).snapshot, dataId, pointIndex);
      const saved = await client.saveBlend();
      const reopened = await reopenedClient.openBlend(saved.slice(0));
      const afterReopen = summary(reopened.snapshot, dataId, pointIndex);
      return { fixtureSha256: input.fixtureSha256, dataId, pointIndex, before, afterEdit, afterUndo, afterRedo, malformed, afterMalformed, afterReopen, 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-P1132-001"), { recursive: true });
  fs.writeFileSync(path.join(root, "tests/golden/WBV2-P1132-001/curve-handle-command-production.json"), `${JSON.stringify({ schemaVersion: 1, task: "WBV2-P1132-001", operation: "CURVE_HANDLE_COMMAND_MAIN_CHROMIUM", browser: "chromium", queueMutation: false, ...result }, null, 2)}\n`);
  expect(result.error).toBeUndefined();
  expect(result.fixtureSha256).toBe(fixtureSha256);
  expect(result.afterEdit.position[0]).toBeCloseTo(result.before.position[0] + 0.25, 5);
  expect(result.afterUndo.position).toEqual(result.before.position);
  expect(result.afterRedo.position).toEqual(result.afterEdit.position);
  expect(result.malformed.code).not.toBe("NO_ERROR");
  expect(result.afterMalformed.position).toEqual(result.afterRedo.position);
  expect(result.afterReopen.position).toEqual(result.afterRedo.position);
  expect(result.afterReopen.revision).toBe(1);
  expect(result.savedSha256).not.toBe(fixtureSha256);
});