import { execFile } from "node:child_process";
import { promisify } from "node:util";
import { describe, expect, it } from "vitest";

const execFileAsync = promisify(execFile);
const scriptPath = "scripts/install-native-sync-host.mjs";

async function showDir(args: string[]): Promise<{ dir: string; registryHint: string | null }> {
  const { stdout } = await execFileAsync(process.execPath, [
    scriptPath,
    "--show-dir",
    "--browser",
    args[0]!,
    "--platform-override",
    args[1]!,
    "--home-override",
    args[2]!,
  ]);
  return JSON.parse(stdout) as { dir: string; registryHint: string | null };
}

describe("native sync installer path resolution", () => {
  const home = "/home/test";

  it("resolves macOS Chrome under Application Support/Google/Chrome", async () => {
    const { dir } = await showDir(["chrome", "darwin", home]);
    expect(dir).toBe("/home/test/Library/Application Support/Google/Chrome/NativeMessagingHosts");
  });

  it("resolves macOS Firefox under Application Support/Mozilla", async () => {
    const { dir } = await showDir(["firefox", "darwin", home]);
    expect(dir).toBe("/home/test/Library/Application Support/Mozilla/NativeMessagingHosts");
  });

  it("resolves Linux Chrome under .config/google-chrome", async () => {
    const { dir } = await showDir(["chrome", "linux", home]);
    expect(dir).toBe("/home/test/.config/google-chrome/NativeMessagingHosts");
  });

  it("resolves Linux Firefox under .mozilla/native-messaging-hosts", async () => {
    const { dir } = await showDir(["firefox", "linux", home]);
    expect(dir).toBe("/home/test/.mozilla/native-messaging-hosts");
  });

  it("resolves Windows with a registry hint", async () => {
    const { dir, registryHint } = await showDir(["chrome", "win32", "C:\\Users\\test"]);
    expect(dir).toContain("Peach");
    expect(registryHint).toContain("HKEY_CURRENT_USER");
    expect(registryHint).toContain("com.peachpasswords.sync");
  });

  it("rejects unsupported platforms", async () => {
    await expect(showDir(["chrome", "freebsd", home])).rejects.toThrow("unsupported platform");
  });
});

describe("native sync installer script", () => {
  it("--dry-run prints destination + manifest without writing", async () => {
    const { stdout } = await execFileAsync(process.execPath, [
      scriptPath,
      "--browser",
      "chrome",
      "--extension-id",
      "abcdefghijklmnopabcdefghijklmnop",
      "--host-path",
      "/opt/peach/peach-sync-host",
      "--dry-run",
    ]);
    expect(stdout).toMatch(/Would write .*com\.peachpasswords\.sync\.json/);
    expect(stdout).toContain('"name": "com.peachpasswords.sync"');
    expect(stdout).toContain("/opt/peach/peach-sync-host");
  });

  it("rejects missing --browser", async () => {
    await expect(
      execFileAsync(process.execPath, [scriptPath, "--dry-run"])
    ).rejects.toThrow("--browser is required");
  });
});