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 curve and surface advanced commands preserve native Main state", async ({ page }) => {
  test.setTimeout(120_000);
  await page.goto("/");
  const result = await page.evaluate(async (input) => {
    const { WebEngineClient } = await import("/src/engine-client/WebEngineClient.ts");
    const timings: { stage: string; seconds: number }[] = [];
    const measured = async <T>(stage: string, action: () => Promise<T>) => {
      const started = performance.now();
      try { return await action(); } finally { timings.push({ stage, seconds: (performance.now() - started) / 1000 }); }
    };
    const hash = (value: unknown) => crypto.subtle.digest("SHA-256", new TextEncoder().encode(JSON.stringify(value))).then((bytes) => Array.from(new Uint8Array(bytes), (byte) => byte.toString(16).padStart(2, "0")).join(""));
    const summary = (snapshot: any) => snapshot.nonMeshData?.map((entry: any) => ({ id: entry.id, type: entry.type, pointCount: entry.pointCount, resolution: entry.resolution, bevelDepth: entry.bevelDepth, bevelResolution: entry.bevelResolution, taperObjectId: entry.taperObjectId, splineDimensions: entry.splineDimensions })).sort((a: any, b: any) => a.id.localeCompare(b.id));
    const open = async () => {
      const client = new WebEngineClient({ timeoutMs: 60_000 });
      const opened = await measured("open", () => client.openBlend(Uint8Array.from(input.bytes).buffer));
      return { client, opened, curve: opened.snapshot.nonMeshData?.find((entry: any) => entry.type === "CURVE"), surface: opened.snapshot.nonMeshData?.find((entry: any) => entry.type === "SURFACE") };
    };
    try {
      const primary = await open();
      if (!primary.curve || !primary.surface) throw new Error("fixture must contain both Curve and Surface data");
      const before = summary(primary.opened.snapshot);
      const curveId = primary.curve.id as string;
      const surfaceId = primary.surface.id as string;
      const beveled = await measured("setCurveBevel", () => primary.client.applyCommand({ type: "setCurveBevel", dataId: curveId, bevelDepth: 0.1, bevelResolution: 4, bevelFactorStart: 0, bevelFactorEnd: 1 } as any));
      const tapered = await measured("setCurveTaper", () => primary.client.applyCommand({ type: "setCurveTaper", dataId: curveId, taperObjectId: null, taperRadiusMode: 0 } as any));
      const converted = await measured("convertCurveType", () => primary.client.applyCommand({ type: "convertCurveType", dataId: curveId, targetType: "SURFACE" } as any));
      const convertedId = converted.snapshot.nonMeshData?.find((entry: any) => entry.id === curveId)?.id ?? surfaceId;
      const resolved = await measured("setSurfaceResolution", () => primary.client.applyCommand({ type: "setSurfaceResolution", dataId: convertedId, resolutionU: 16, resolutionV: 16 } as any));
      const after = summary(resolved.snapshot);
      const negative = await primary.client.applyCommand({ type: "setCurveBevel", dataId: curveId, bevelDepth: -1 } as any).then(() => ({ code: "NO_ERROR" })).catch((error: any) => ({ code: error?.code, message: error?.message }));
      const afterNegative = summary((await primary.client.snapshot()).snapshot);
      const undoClient = await open();
      const undoBefore = summary(undoClient.opened.snapshot);
      const undoEdit = await undoClient.client.applyCommand({ type: "setSurfaceResolution", dataId: undoClient.surface.id, resolutionU: 13, resolutionV: 13 } as any);
      const undo = await undoClient.client.applyCommand({ type: "undo" } as any);
      const redo = await undoClient.client.applyCommand({ type: "redo" } as any);
      const save = await measured("save", () => undoClient.client.saveBlend());
      const reopenClient = new WebEngineClient({ timeoutMs: 60_000 });
      const reopened = await measured("reopen", () => reopenClient.openBlend(save.slice(0)));
      const deterministicClient = await open();
      const deterministicEdit = await deterministicClient.client.applyCommand({ type: "setCurveBevel", dataId: deterministicClient.curve.id, bevelDepth: 0.1, bevelResolution: 4, bevelFactorStart: 0, bevelFactorEnd: 1 } as any);
      const observations = {
        positive: { before: await hash(before), after: await hash(after) },
        negative: { before: await hash(after), after: await hash(afterNegative) },
        undo_redo: { before: await hash(undoBefore), after: await hash(summary(undoEdit.snapshot)), undo: await hash(summary(undo.snapshot)), redo: await hash(summary(redo.snapshot)) },
        save_reopen: { saved: await hash(summary(undoEdit.snapshot)), reopened: await hash(summary(reopened.snapshot)) },
        determinism: { first: await hash(summary(beveled.snapshot)), second: await hash(summary(deterministicEdit.snapshot)) },
      };
      return { fixtureSha256: input.fixtureSha256, timings, observations, negative, before, after, afterNegative, undoRevision: undo.snapshot.revision, redoRevision: redo.snapshot.revision, reopened: summary(reopened.snapshot), savedSha256: await hash(Array.from(new Uint8Array(save))) };
    } catch (error: any) {
      return { error: { code: error?.code, message: error?.message, detail: String(error) }, timings } as any;
    }
  }, { bytes: Array.from(fixture), fixtureSha256 });
  const receiptDir = process.env.WBV2_RECEIPT_DIR;
  const outputDir = receiptDir ?? path.join(root, "tests/golden/WBV2-P1424-001/curve-surface");
  fs.mkdirSync(outputDir, { recursive: true });
  fs.writeFileSync(path.join(outputDir, "curve-surface-production.json"), `${JSON.stringify({ schemaVersion: 1, task: "WBV2-P1424-001", operation: "CURVE_SURFACE_MAIN_CHROMIUM", browser: "chromium", queueMutation: false, ...result }, null, 2)}\n`);
  if (receiptDir && !result.error) {
    const artifacts = ["build_blender_native/bin/blender", "build_web_blender6/bin/web_engine.wasm", "tests/files/web/nonmesh_scene.blend"].map((file) => ({ path: file, sha256: crypto.createHash("sha256").update(fs.readFileSync(path.join(root, file))).digest("hex") }));
    const units = {
      positive: ["web-command:setCurveBevel", "web-command:setCurveTaper", "web-command:convertCurveType", "web-command:setSurfaceResolution"],
      negative: ["web-command:setCurveBevel"], undo_redo: ["web-command:setSurfaceResolution"], save_reopen: ["web-command:setSurfaceResolution"], determinism: ["web-command:setCurveBevel"],
    } as const;
    for (const [kind, observations] of Object.entries(result.observations)) fs.writeFileSync(path.join(receiptDir, `curve-surface-${kind}.json`), `${JSON.stringify({ schemaVersion: 1, task: "WBV2-P1424-001", operation: "CURVE_SURFACE_MAIN_CHROMIUM", browser: "chromium", runtime: "CHROMIUM_WEBENGINE", queueMutation: false, status: "PASS", caseId: `curve-surface-${kind}`, kind, unitIds: units[kind as keyof typeof units], observations, artifacts, timings: result.timings }, null, 2)}\n`);
  }
  expect(result.error).toBeUndefined();
  expect(result.fixtureSha256).toBe(fixtureSha256);
  expect(result.negative.code).not.toBe("NO_ERROR");
  expect(result.observations.positive.after).not.toBe(result.observations.positive.before);
  expect(result.observations.negative.after).toBe(result.observations.negative.before);
  expect(result.observations.undo_redo.undo).toBe(result.observations.undo_redo.before);
  expect(result.observations.undo_redo.redo).toBe(result.observations.undo_redo.after);
  expect(result.observations.save_reopen.reopened).toBe(result.observations.save_reopen.saved);
  expect(result.observations.determinism.first).toBe(result.observations.determinism.second);
});