import { describe, expect, it, vi, beforeEach } from "vitest";
import { render, screen, waitFor } from "@testing-library/react";
import userEvent from "@testing-library/user-event";

const getTailscaleDevicesMock = vi.hoisted(() => vi.fn());

vi.mock("../../src/frontend/tailscale-api", () => ({
  getTailscaleDevices: getTailscaleDevicesMock,
}));

vi.mock("react-i18next", async (importOriginal) => ({
  ...(await importOriginal<object>()),
  useTranslation: () => ({ t: (key: string) => key }),
}));

import { TailscaleDevicesPanel } from "../../src/frontend/TailscaleDevicesPanel";

beforeEach(() => {
  vi.clearAllMocks();
});

describe("TailscaleDevicesPanel", () => {
  it("shows the no-api-key message when hasApiKey is false", async () => {
    getTailscaleDevicesMock.mockResolvedValue({
      devices: [],
      hasApiKey: false,
    });

    render(<TailscaleDevicesPanel onConnect={vi.fn()} />);

    await waitFor(() =>
      expect(screen.getByText("hosts.tailscaleNoApiKey")).toBeTruthy(),
    );
  });

  it("shows the empty-devices message when the tailnet has no devices", async () => {
    getTailscaleDevicesMock.mockResolvedValue({ devices: [], hasApiKey: true });

    render(<TailscaleDevicesPanel onConnect={vi.fn()} />);

    await waitFor(() =>
      expect(screen.getByText("hosts.tailscaleNoDevices")).toBeTruthy(),
    );
  });

  it("renders devices and connects with an ephemeral tailscale host", async () => {
    const user = userEvent.setup();
    getTailscaleDevicesMock.mockResolvedValue({
      hasApiKey: true,
      devices: [
        {
          id: "d1",
          name: "box",
          hostname: "box",
          addresses: ["100.64.0.1"],
          os: "linux",
          lastSeen: "2026-01-01T00:00:00Z",
        },
      ],
    });

    const onConnect = vi.fn();
    render(<TailscaleDevicesPanel onConnect={onConnect} />);

    await waitFor(() => expect(screen.getByText("box")).toBeTruthy());
    await user.click(
      screen.getByText("newUi.sidebar.quickConnect.connectToTerminal"),
    );

    expect(onConnect).toHaveBeenCalledOnce();
    const [host, type] = onConnect.mock.calls[0];
    expect(type).toBe("terminal");
    expect(host.ip).toBe("100.64.0.1");
    expect(host.authType).toBe("tailscale");
    expect(host.username).toBe("root");
  });

  const device = {
    id: "d1",
    name: "box.tailnet.ts.net",
    hostname: "box",
    addresses: ["100.64.0.1", "fd7a::1"],
    os: "linux",
    lastSeen: "2026-01-01T00:00:00Z",
  };

  it("opens the host editor with the device filled in", async () => {
    const user = userEvent.setup();
    getTailscaleDevicesMock.mockResolvedValue({
      hasApiKey: true,
      devices: [device],
    });

    const onAddHost = vi.fn();
    render(<TailscaleDevicesPanel onConnect={vi.fn()} onAddHost={onAddHost} />);

    await waitFor(() => expect(screen.getByText("box")).toBeTruthy());
    await user.clear(
      screen.getByPlaceholderText("newUi.sidebar.quickConnect.usernameLabel"),
    );
    await user.type(
      screen.getByPlaceholderText("newUi.sidebar.quickConnect.usernameLabel"),
      "luke",
    );
    await user.click(screen.getByText("hosts.tailscaleAddHost"));

    expect(onAddHost).toHaveBeenCalledWith({
      name: "box",
      ip: "100.64.0.1",
      port: 22,
      username: "luke",
      authType: "tailscale",
    });
  });

  it("hides Add host when the shell cannot open the editor", async () => {
    getTailscaleDevicesMock.mockResolvedValue({
      hasApiKey: true,
      devices: [device],
    });

    render(<TailscaleDevicesPanel onConnect={vi.fn()} />);

    await waitFor(() => expect(screen.getByText("box")).toBeTruthy());
    expect(screen.queryByText("hosts.tailscaleAddHost")).toBeNull();
  });

  it("copies the tailnet IP", async () => {
    const user = userEvent.setup();
    const writeText = vi.fn().mockResolvedValue(undefined);
    Object.defineProperty(navigator, "clipboard", {
      value: { writeText },
      configurable: true,
    });
    getTailscaleDevicesMock.mockResolvedValue({
      hasApiKey: true,
      devices: [device],
    });

    render(<TailscaleDevicesPanel onConnect={vi.fn()} />);

    await waitFor(() => expect(screen.getByText("box")).toBeTruthy());
    expect(screen.getByText("linux")).toBeTruthy();
    await user.click(screen.getByLabelText("hosts.tailscaleCopyIp"));

    expect(writeText).toHaveBeenCalledWith("100.64.0.1");
  });
});