// @vitest-environment jsdom
//
// Contract of the Plex header search box (S2): the field scope-pill and the instant typeahead.
// Covers the pieces the /code-review flagged: the pill's per-scope options (Episode only in
// show/both), the suggestion list rendering, keyboard pick → jumpTo hand-off, and the regression
// that closing the panel (Escape) must NOT wedge it shut while the input keeps focus — typing again
// re-opens it. i18n is key-passthrough; the provider, api, and debounce are mocked so the test drives
// state directly. ActionMenu is floating-ui based, so we stub the observers and wrap in a FloatingTree.
import { describe, it, expect, afterEach, beforeAll, beforeEach, vi } from "vitest";
import { render, screen, fireEvent, cleanup, waitFor } from "@testing-library/react";
import { FloatingTree } from "@floating-ui/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: () => ({ t: (key: string) => key }) };
});
// Identity debounce so a typed value is reflected immediately.
vi.mock("../lib/useDebounced", () => ({ useDebounced: (v: unknown) => v }));

// Controllable provider — PlexSearchBox reads q/scope/field and calls setQ/setField/setJumpTo.
const plexState = { scope: "both", field: "all", q: "" } as {
  scope: string;
  field: string;
  q: string;
};
// setQ writes back to plexState.q so a typed value flows through to `dq` on the next render (the real
// provider persists it) — lets the reopen test assert a fresh query fires on retype, not just that
// the panel re-appears from cache.
const setQ = vi.fn((v: string) => {
  plexState.q = v;
});
const setField = vi.fn();
const setJumpTo = vi.fn();
vi.mock("./PlexProvider", () => ({
  usePlex: () => plexState,
  usePlexActions: () => ({ setQ, setField, setJumpTo }),
}));

// api.plexLibrary stub — returns whatever the current test queued.
const plexLibrary = vi.fn();
vi.mock("../lib/api", () => ({ api: { plexLibrary: (...a: unknown[]) => plexLibrary(...a) } }));

import PlexSearchBox from "./PlexSearchBox";

const card = (id: string, title: string, type: "movie" | "show" = "movie", year = 2000) => ({
  id,
  type,
  title,
  year,
  thumb: `/api/plex/image/${id}`,
});
const result = (items: ReturnType<typeof card>[]) => ({
  scope: "both",
  total: items.length,
  offset: 0,
  limit: 10,
  items,
  episodes: [],
});

beforeAll(() => {
  class Stub {
    observe() {}
    unobserve() {}
    disconnect() {}
    takeRecords() {
      return [];
    }
  }
  globalThis.ResizeObserver ??= Stub as unknown as typeof ResizeObserver;
  globalThis.IntersectionObserver ??= Stub as unknown as typeof IntersectionObserver;
  // jsdom has no layout, so scrollIntoView (used to keep the active option in view) is absent.
  Element.prototype.scrollIntoView ??= () => {};
});

beforeEach(() => {
  plexState.scope = "both";
  plexState.field = "all";
  plexState.q = "";
  setQ.mockClear(); // clear calls but KEEP the write-back implementation
  setField.mockReset();
  setJumpTo.mockReset();
  plexLibrary.mockReset();
  plexLibrary.mockResolvedValue(result([]));
});
afterEach(cleanup);

const renderBox = () => {
  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } });
  return render(
    <QueryClientProvider client={qc}>
      <FloatingTree>
        <PlexSearchBox />
      </FloatingTree>
    </QueryClientProvider>,
  );
};

const openPill = () =>
  fireEvent.click(screen.getByRole("button", { name: "plex.searchField.aria" }));

describe("PlexSearchBox — scope-pill", () => {
  it("offers all five field scopes when shows are in scope", () => {
    plexState.scope = "both";
    renderBox();
    openPill();
    const labels = screen.getAllByRole("menuitem", { hidden: true }).map((b) => b.textContent);
    expect(labels).toEqual([
      "plex.searchField.all",
      "plex.searchField.title",
      "plex.searchField.people",
      "plex.searchField.summary",
      "plex.searchField.episode",
    ]);
  });

  it("hides the Episode scope in a movie-only scope", () => {
    plexState.scope = "movie";
    renderBox();
    openPill();
    const labels = screen.getAllByRole("menuitem", { hidden: true }).map((b) => b.textContent);
    expect(labels).toEqual([
      "plex.searchField.all",
      "plex.searchField.title",
      "plex.searchField.people",
      "plex.searchField.summary",
    ]);
    expect(labels).not.toContain("plex.searchField.episode");
  });
});

describe("PlexSearchBox — typeahead", () => {
  it("renders the top matches on focus and picks one via keyboard → jumpTo", async () => {
    plexState.q = "matrix";
    plexLibrary.mockResolvedValue(
      result([card("m1", "The Matrix"), card("m2", "The Matrix Reloaded")]),
    );
    renderBox();
    fireEvent.focus(screen.getByRole("combobox"));

    // Both matches show up as options.
    await waitFor(() =>
      expect(screen.getAllByRole("option").map((o) => o.textContent)).toEqual([
        expect.stringContaining("The Matrix"),
        expect.stringContaining("The Matrix Reloaded"),
      ]),
    );
    // The request carried the active field scope + the limit.
    expect(plexLibrary).toHaveBeenCalledWith(
      expect.objectContaining({ scope: "both", q: "matrix", field: "all", limit: 10 }),
    );

    // ArrowDown highlights the first, Enter opens it via the jumpTo hand-off (not a Go search).
    const input = screen.getByRole("combobox");
    fireEvent.keyDown(input, { key: "ArrowDown" });
    fireEvent.keyDown(input, { key: "Enter" });
    expect(setJumpTo).toHaveBeenCalledWith({ id: "m1", type: "movie" });
  });

  it("reopens after Escape when the user types again (focus/dismiss are decoupled)", async () => {
    plexState.q = "matrix";
    plexLibrary.mockResolvedValue(result([card("m1", "The Matrix")]));
    renderBox();
    const input = screen.getByRole("combobox");
    fireEvent.focus(input);
    await screen.findByRole("listbox");

    // Escape dismisses the panel (input stays focused — Escape does not blur).
    fireEvent.keyDown(input, { key: "Escape" });
    await waitFor(() => expect(screen.queryByRole("listbox")).toBeNull());

    // Typing again must re-open it without a blur+refocus round-trip AND fire a fresh suggest query
    // for the new term (not just re-show the cached list).
    plexLibrary.mockClear();
    fireEvent.change(input, { target: { value: "matrixx" } });
    await screen.findByRole("listbox");
    await waitFor(() =>
      expect(plexLibrary).toHaveBeenCalledWith(expect.objectContaining({ q: "matrixx" })),
    );
  });

  // E11 S4: SearchBar's Escape hands the keyboard back to the page (blur). With the panel open, the
  // first Escape belongs to the panel: it must close it and leave the caret in the field; only the
  // next Escape leaves.
  it("spends the first Escape on the panel and only the second on leaving the field", async () => {
    plexState.q = "matrix";
    plexLibrary.mockResolvedValue(result([card("m1", "The Matrix")]));
    renderBox();
    const input = screen.getByRole("combobox");
    input.focus();
    await screen.findByRole("listbox");

    fireEvent.keyDown(input, { key: "Escape" });
    await waitFor(() => expect(screen.queryByRole("listbox")).toBeNull());
    expect(document.activeElement).toBe(input);

    fireEvent.keyDown(input, { key: "Escape" });
    expect(document.activeElement).not.toBe(input);
  });

  it("marks the input as a combobox and toggles aria-expanded with the panel", async () => {
    plexState.q = "matrix";
    plexLibrary.mockResolvedValue(result([card("m1", "The Matrix")]));
    renderBox();
    const input = screen.getByRole("combobox");
    // Collapsed until focused.
    expect(input.getAttribute("aria-expanded")).toBe("false");
    expect(input.getAttribute("aria-controls")).toBeNull();

    fireEvent.focus(input);
    const list = await screen.findByRole("listbox");
    // Expanded, and the input points at the listbox it controls.
    expect(input.getAttribute("aria-expanded")).toBe("true");
    expect(input.getAttribute("aria-controls")).toBe(list.id);

    // Escape collapses it again and drops the association.
    fireEvent.keyDown(input, { key: "Escape" });
    await waitFor(() => expect(input.getAttribute("aria-expanded")).toBe("false"));
    expect(input.getAttribute("aria-controls")).toBeNull();
  });
});