import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { describe, expect, it } from "vitest";
import { resolveStableNodePath } from "./stable-node-path.js";

describe("resolveStableNodePath", () => {
  it("returns non-cellar paths unchanged", async () => {
    await expect(resolveStableNodePath("/usr/local/bin/node")).resolves.toBe("/usr/local/bin/node");
  });

  it("prefers the Homebrew opt symlink for default and versioned formulas", async () => {
    const prefix = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-stable-node-"));
    const defaultNode = path.join(prefix, "Cellar", "node", "25.7.0", "bin", "node");
    const versionedNode = path.join(prefix, "Cellar", "node@22", "22.17.0", "bin", "node");
    const optDefault = path.join(prefix, "opt", "node", "bin", "node");
    const optVersioned = path.join(prefix, "opt", "node@22", "bin", "node");

    await fs.mkdir(path.dirname(optDefault), { recursive: true });
    await fs.mkdir(path.dirname(optVersioned), { recursive: true });
    await fs.writeFile(optDefault, "", "utf8");
    await fs.writeFile(optVersioned, "", "utf8");

    await expect(resolveStableNodePath(defaultNode)).resolves.toBe(optDefault);
    await expect(resolveStableNodePath(versionedNode)).resolves.toBe(optVersioned);
  });

  it("falls back to the bin symlink for the default formula, otherwise original path", async () => {
    const prefix = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-stable-node-"));
    const defaultNode = path.join(prefix, "Cellar", "node", "25.7.0", "bin", "node");
    const versionedNode = path.join(prefix, "Cellar", "node@22", "22.17.0", "bin", "node");
    const binNode = path.join(prefix, "bin", "node");

    await fs.mkdir(path.dirname(binNode), { recursive: true });
    await fs.writeFile(binNode, "", "utf8");

    await expect(resolveStableNodePath(defaultNode)).resolves.toBe(binNode);
    await expect(resolveStableNodePath(versionedNode)).resolves.toBe(versionedNode);
  });
});