import { test, expect } from "@playwright/test";
import fs from "node:fs";
import path from "node:path";
const root = path.resolve(import.meta.dirname, "../../..");
const fixture = fs.readFileSync(path.join(root, "tests/files/web/basic_scene.blend"));
const receiptDir = path.join(root, "tests/golden/WBV2-P1425-001/verification");

test("modifier parameters evaluate and Apply bakes the result", async ({ page }) => {
  test.setTimeout(120_000);
  await page.goto("/?engine=manual");
  const result = await page.evaluate(async ({ bytes }) => {
    const { WebEngineClient } = await import("/src/engine-client/WebEngineClient.ts");
    const client = new WebEngineClient({ timeoutMs: 60_000 });
    const reopened = new WebEngineClient({ timeoutMs: 60_000 });
    try {
      const open = await client.openBlend(Uint8Array.from(bytes).buffer);
      const node = open.snapshot.nodes.find((n) => n.name === "BasicCube");
      if (!node?.dataId) throw new Error("BasicCube is missing");
      const meshId = node.dataId;
      const meshState = (snapshot: typeof open.snapshot) => {
        const mesh = snapshot.meshes.find((item) => item.id === meshId);
        return { vertexCount: mesh?.vertexCount ?? null, stack: mesh?.modifierStack ?? [] };
      };
      const base = meshState(open.snapshot);
      const added = await client.applyCommand({ type: "addModifier", objectId: node.id, meshId, modifierType: "SUBSURF", baseRevision: open.snapshot.revision } as never);
      const levelOne = meshState(added.snapshot);
      const modifier = levelOne.stack.find((item) => item.type === "SUBSURF");
      if (!modifier?.uuid) throw new Error("SUBSURF was not published");
      const configured = await client.applyCommand({ type: "setModifierParameters", meshId, modifierUuid: modifier.uuid, parameters: { levels: 2, render_levels: 2 }, baseRevision: added.snapshot.revision } as never);
      const levelTwo = meshState(configured.snapshot);
      const configuredModifier = levelTwo.stack.find((item) => item.uuid === modifier.uuid);
      const evaluateVerts = async () => {
        const depsgraph = await client.evaluateDepsgraph();
        return depsgraph.depsgraph.meshes.find((item) => item.meshId === meshId || item.objectId === node.id)?.vertexCount ?? null;
      };
      const evalVerts = await evaluateVerts();
      const undone = await client.applyCommand({ type: "undo" } as never);
      const undoStack = meshState(undone.snapshot).stack;
      const evalUndoVerts = await evaluateVerts();
      const redone = await client.applyCommand({ type: "redo" } as never);
      const redoStack = meshState(redone.snapshot).stack;
      const evalRedoVerts = await evaluateVerts();
      const payload = JSON.stringify({ operator: "object.modifier_apply", properties: { modifier: modifier.name, single_user: true, report: true }, baseRevision: redone.snapshot.revision, sceneName: redone.snapshot.scenes?.[0]?.name ?? "Scene", areaType: "VIEW_3D", mode: "OBJECT", native: true, selectedObjects: [node.name], activeObject: node.name, meshSelection: null, nonMeshSelection: null });
      const source = `import json, web_blender\nweb_blender.desktop_operator(json.loads(${JSON.stringify(payload)}))`;
      const applied = await client.executeEmbeddedPython(source, "ModifierApply.py", false);
      const afterApply = meshState(applied.snapshot);
      const saved = await client.saveBlend();
      client.terminate();
      const reopen = await reopened.openBlend(saved);
      const afterReopen = meshState(reopen.snapshot);
      return { base, levelOne, levelTwo, evalVerts, evalUndoVerts, evalRedoVerts, undoLevels: undoStack.find((item) => item.uuid === modifier.uuid)?.parameters?.levels ?? null, redoLevels: redoStack.find((item) => item.uuid === modifier.uuid)?.parameters?.levels ?? null, configuredParameters: configuredModifier?.parameters ?? null, applyState: applied.python.state, afterApply, afterReopen };
    } catch (error) { const e = error as { message?: string; code?: string }; return { error: e?.message, code: e?.code }; }
    finally { client.terminate(); reopened.terminate(); }
  }, { bytes: Array.from(fixture) });
  fs.mkdirSync(receiptDir, { recursive: true });
  fs.writeFileSync(path.join(receiptDir, "modifier-parameters-apply-production.json"), JSON.stringify({ schemaVersion: 1, browser: "chromium", scope: "SUBSURF parameters levels=2 -> undo/redo -> native object.modifier_apply -> save/reopen", ...result }, null, 2));
  expect(result.error).toBeUndefined();
  expect(result.applyState).toBe("DONE");
  expect(result.configuredParameters?.levels).toBe(2);
  expect(result.undoLevels).toBe(1);
  expect(result.evalUndoVerts).toBeLessThan(result.evalVerts);
  expect(result.redoLevels).toBe(2);
  expect(result.evalRedoVerts).toBe(result.evalVerts);
  expect(result.levelTwo.stack.some((item: { uuid: string }) => item.uuid)).toBe(true);
  expect(result.afterApply.stack).toEqual([]);
  expect(result.afterReopen.stack).toEqual([]);
  expect(result.evalVerts).toBeGreaterThan(result.base.vertexCount);
  expect(result.afterApply.vertexCount).toBe(result.evalVerts);
  expect(result.afterReopen.vertexCount).toBe(result.evalVerts);
});