/*
Copyright 2026 Lotus Guild

SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
Please see LICENSE in the repository root for full details.
*/

import { afterEach, describe, expect, it, vi } from "vitest";
import { act, render, screen } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { TooltipProvider } from "@vector-im/compound-web";
import { BehaviorSubject } from "rxjs";

import { type CallViewModel } from "../state/CallViewModel/CallViewModel";
import { LotusScreensharePrompt } from "./LotusScreensharePrompt";
import {
  lotusFrameScreenshareEnabled,
  lotusFrameScreenshareVisible$,
  lotusScreensharePrompt$,
  shouldPromptScreenshare,
} from "./lotusControls";

// lotusFlag memoizes the URL params on first read, so set them once here.
window.history.pushState(
  {},
  "",
  "/?lotusHostControls=1&lotusFrameScreenshare=1",
);

const mockVm = (
  toggle: (() => void) | null,
  sharing = new BehaviorSubject(false),
): CallViewModel =>
  ({
    sharingScreen$: sharing,
    toggleScreenSharing: toggle,
  }) as unknown as CallViewModel;

const renderPrompt = (vm: CallViewModel): void => {
  render(
    <TooltipProvider>
      <LotusScreensharePrompt vm={vm} />
    </TooltipProvider>,
  );
};
const prompt = (): HTMLElement | null =>
  screen.queryByTestId("lotus_screenshare_prompt");

afterEach(() => {
  act(() => {
    lotusScreensharePrompt$.next(false);
    lotusFrameScreenshareVisible$.next(true);
  });
});

describe("LotusScreensharePrompt", () => {
  it("is enabled by lotusHostControls + lotusFrameScreenshare", () => {
    expect(lotusFrameScreenshareEnabled()).toBe(true);
  });

  it("stays hidden until the host asks", () => {
    renderPrompt(mockVm(vi.fn()));
    expect(prompt()).toBeNull();
    act(() => lotusScreensharePrompt$.next(true));
    expect(prompt()).toBeInTheDocument();
    expect(
      screen.getByRole("alertdialog", { name: "Share your screen?" }),
    ).toBeInTheDocument();
  });

  it("focuses Share, and Share starts the share and closes", async () => {
    const toggle = vi.fn();
    renderPrompt(mockVm(toggle));
    act(() => lotusScreensharePrompt$.next(true));
    const share = screen.getByTestId("lotus_screenshare_prompt_share");
    expect(share).toHaveFocus();
    await userEvent.click(share);
    expect(toggle).toHaveBeenCalledTimes(1);
    expect(prompt()).toBeNull();
  });

  it("Cancel and Escape close without sharing", async () => {
    const toggle = vi.fn();
    renderPrompt(mockVm(toggle));
    act(() => lotusScreensharePrompt$.next(true));
    await userEvent.click(screen.getByRole("button", { name: "Cancel" }));
    expect(prompt()).toBeNull();
    act(() => lotusScreensharePrompt$.next(true));
    await userEvent.keyboard("{Escape}");
    expect(prompt()).toBeNull();
    expect(toggle).not.toHaveBeenCalled();
  });

  it("closes when a share starts some other way", () => {
    const sharing = new BehaviorSubject(false);
    renderPrompt(mockVm(vi.fn(), sharing));
    act(() => lotusScreensharePrompt$.next(true));
    act(() => sharing.next(true));
    expect(prompt()).toBeNull();
  });

  it("closes when the room's policy stops allowing screensharing", () => {
    renderPrompt(mockVm(vi.fn()));
    act(() => lotusScreensharePrompt$.next(true));
    act(() => lotusFrameScreenshareVisible$.next(false));
    expect(prompt()).toBeNull();
  });

  it("renders nothing when screensharing is unavailable", () => {
    renderPrompt(mockVm(null));
    act(() => lotusScreensharePrompt$.next(true));
    expect(prompt()).toBeNull();
  });
});

describe("shouldPromptScreenshare", () => {
  const ok = { enabled: true, allowed: true, canShare: true, sharing: false };
  it("prompts only in prompt mode, when allowed, able and not sharing", () => {
    expect(shouldPromptScreenshare(ok)).toBe(true);
    expect(shouldPromptScreenshare({ ...ok, enabled: false })).toBe(false);
    expect(shouldPromptScreenshare({ ...ok, allowed: false })).toBe(false);
    expect(shouldPromptScreenshare({ ...ok, canShare: false })).toBe(false);
    expect(shouldPromptScreenshare({ ...ok, sharing: true })).toBe(false);
  });
});