// @vitest-environment jsdom
//
// The up-next end-card's core behaviour: the countdown that auto-advances at ~10s (the whole
// point — it REPLACED the old instant jump, so a regression that fires early or never is exactly the
// bug to guard), the "Play now"/Cancel controls, and the episode heading's null season/episode
// fallback. i18n is key-passthrough; `../lib/api` is mocked so no network runs; the countdown uses
// performance.now, which vitest's fake timers advance alongside setInterval.
import { describe, it, expect, afterEach, vi } from "vitest";
import { render, screen, fireEvent, cleanup, act } from "@testing-library/react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";

vi.mock("react-i18next", async (importOriginal) => {
  const actual = await importOriginal<typeof import("react-i18next")>();
  return {
    ...actual,
    useTranslation: () => ({ i18n: { language: "en" }, t: (key: string) => key }),
  };
});

vi.mock("../lib/api", () => ({
  api: { plexItem: vi.fn(), plexImageUrl: () => "/img" },
}));

import { UpNextCard } from "./UpNextCard";
import { api } from "../lib/api";

afterEach(() => {
  cleanup();
  vi.useRealTimers();
  vi.clearAllMocks();
});

function renderCard(opts: { onAdvance?: () => void; onCancel?: () => void } = {}) {
  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } });
  return render(
    <QueryClientProvider client={qc}>
      <UpNextCard
        nextId="e7"
        onAdvance={opts.onAdvance ?? vi.fn()}
        onCancel={opts.onCancel ?? vi.fn()}
      />
    </QueryClientProvider>,
  );
}

describe("UpNextCard", () => {
  it("auto-advances after the ~10s countdown, and NOT before", () => {
    vi.useFakeTimers();
    // A never-resolving detail query: the heading is irrelevant here and this avoids async state
    // updates racing the fake clock.
    (api.plexItem as ReturnType<typeof vi.fn>).mockReturnValue(new Promise(() => {}));
    const onAdvance = vi.fn();
    renderCard({ onAdvance });

    act(() => {
      vi.advanceTimersByTime(9000);
    });
    expect(onAdvance).not.toHaveBeenCalled(); // still counting down

    act(() => {
      vi.advanceTimersByTime(1200);
    });
    expect(onAdvance).toHaveBeenCalledTimes(1); // crossed zero → advanced exactly once
  });

  it("'Play now' advances immediately, without waiting for the countdown", () => {
    (api.plexItem as ReturnType<typeof vi.fn>).mockReturnValue(new Promise(() => {}));
    const onAdvance = vi.fn();
    renderCard({ onAdvance });
    fireEvent.click(screen.getByRole("button", { name: /playNow/ }));
    expect(onAdvance).toHaveBeenCalledTimes(1);
  });

  it("Cancel dismisses via onCancel and does not advance", () => {
    (api.plexItem as ReturnType<typeof vi.fn>).mockReturnValue(new Promise(() => {}));
    const onAdvance = vi.fn();
    const onCancel = vi.fn();
    renderCard({ onAdvance, onCancel });
    fireEvent.click(screen.getByText("plex.player.upNext.cancel"));
    expect(onCancel).toHaveBeenCalledTimes(1);
    expect(onAdvance).not.toHaveBeenCalled();
  });

  it("an episode heading falls back to S?·E? when season/episode are null", async () => {
    (api.plexItem as ReturnType<typeof vi.fn>).mockResolvedValue({
      id: "e7",
      kind: "episode",
      show_title: "Westworld",
      title: "The Adversary",
      season_number: null,
      episode_number: null,
    });
    renderCard();
    expect(await screen.findByText("Westworld · S?·E?")).toBeTruthy();
  });
});