// @vitest-environment jsdom
//
// A subscribed channel's ONE action list: what the manager row's "…" (and its right-click,
// long-press and Shift+F10) offers — and the row buttons it replaced, now rows here: full history,
// hide (an undo toast instead of a confirm), unsubscribe (danger, confirmed) — and the Tags and
// Priority submenus.
import { describe, it, expect, vi, afterEach } from "vitest";
import { renderHook, act, cleanup, waitFor } from "@testing-library/react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import type { ReactNode } from "react";

const h = vi.hoisted(() => ({
  notify: vi.fn(),
  confirm: vi.fn(async () => true),
  role: "user",
  canWrite: true,
}));

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/notifications", async (importOriginal) => ({
  ...(await importOriginal<typeof import("../lib/notifications")>()),
  notify: (...a: unknown[]) => h.notify(...a),
}));
vi.mock("./confirmContext", () => ({ useConfirm: () => h.confirm }));
vi.mock("../lib/useMe", () => ({ useMe: () => ({ role: h.role, can_write: h.canWrite }) }));

import { useChannelActions } from "./useChannelActions";
import { api, type ManagedChannel, type Tag } from "../lib/api";
import type { ActionMenuItem } from "./ui/ActionMenu";

afterEach(() => {
  cleanup();
  vi.restoreAllMocks();
  h.notify.mockReset();
  h.confirm.mockReset();
  h.confirm.mockImplementation(async () => true);
  h.role = "user";
  h.canWrite = true;
  tags = [];
  tagsState = "ready";
  onToggleTag.mockReset();
  onPickPriority.mockReset();
});

const ch = (over: Partial<ManagedChannel> = {}): ManagedChannel => ({
  id: "UC1",
  title: "Chan",
  handle: "chan",
  thumbnail_url: null,
  subscriber_count: null,
  video_count: null,
  description: null,
  stored_videos: 0,
  last_video_at: null,
  total_duration_seconds: 0,
  priority: 0,
  hidden: false,
  deep_requested: false,
  deep_in_queue: false,
  tag_ids: [],
  details_synced: false,
  recent_synced: false,
  backfill_done: false,
  ...over,
});

const onView = vi.fn();
const onToggleTag = vi.fn();
const onPickPriority = vi.fn();
let tags: Tag[] = [];
let tagsState: "loading" | "error" | "ready" = "ready";
const tag = (id: number, name: string) => ({ id, name }) as Tag;
function mount() {
  const qc = new QueryClient({ defaultOptions: { mutations: { retry: false } } });
  const wrapper = ({ children }: { children: ReactNode }) => (
    <QueryClientProvider client={qc}>{children}</QueryClientProvider>
  );
  return renderHook(
    () =>
      useChannelActions({
        onView,
        onOpenWizard: () => {},
        tags,
        tagsState,
        onToggleTag,
        onPickPriority,
      }),
    { wrapper },
  );
}
const pin = [{ id: "pin", label: "pin", onSelect: () => {} }];
const ids = (items: { id: string }[]) => items.map((i) => i.id);
const rowsFor = (c: ManagedChannel) => mount().result.current.items(c, { pin });
const row = (c: ManagedChannel, id: string) => rowsFor(c).find((i) => i.id === id)!;

describe("useChannelActions — the menu", () => {
  it("lists open, pin, tags + priority, the YouTube + copy group, full history, hide and unsubscribe", () => {
    const items = rowsFor(ch());
    expect(ids(items)).toEqual([
      "open",
      "pin",
      "tags",
      "priority",
      "open-youtube",
      "copy-text",
      "copy-link",
      "backfill",
      "hide",
      "unsubscribe",
    ]);
    // Groups: tuning, YouTube/copy, the channel's own settings, then the destructive row alone.
    expect(items.filter((i) => i.separatorBefore).map((i) => i.id)).toEqual([
      "tags",
      "open-youtube",
      "backfill",
      "unsubscribe",
    ]);
    expect(items.find((i) => i.id === "unsubscribe")).toMatchObject({ danger: true });
    expect(items.find((i) => i.id === "copy-text")!.label).toBe("common.copy.name");
  });

  it("has no unsubscribe without the YouTube write scope", () => {
    h.canWrite = false;
    expect(ids(rowsFor(ch()))).not.toContain("unsubscribe");
  });

  it("opens the channel page, and YouTube in a new tab inside the click", () => {
    const open = vi.spyOn(window, "open").mockReturnValue(null);
    row(ch(), "open").onSelect!();
    expect(onView).toHaveBeenCalledWith(expect.objectContaining({ id: "UC1" }));
    const yt = row(ch(), "open-youtube");
    expect("inGesture" in yt && yt.inGesture).toBe(true);
    yt.onSelect!();
    expect(open).toHaveBeenCalledWith(
      "https://www.youtube.com/@chan",
      "_blank",
      "noopener,noreferrer",
    );
  });
});

describe("useChannelActions — full history", () => {
  it("asks for it, and takes a pending ask back", async () => {
    const upd = vi.spyOn(api, "updateChannel").mockResolvedValue({} as never);
    const ask = row(ch(), "backfill");
    expect(ask.label).toBe("channels.row.backfillThis");
    act(() => ask.onSelect!());
    await waitFor(() => expect(upd).toHaveBeenCalledWith("UC1", { deep_requested: true }));
    const cancel = row(ch({ deep_requested: true }), "backfill");
    expect(cancel.label).toBe("channels.row.cancelBackfill");
    act(() => cancel.onSelect!());
    await waitFor(() => expect(upd).toHaveBeenCalledWith("UC1", { deep_requested: false }));
  });

  it("stays in place, off, with the reason, once it is in or on its way for everyone", () => {
    expect(row(ch({ backfill_done: true }), "backfill")).toMatchObject({
      disabled: true,
      note: "channels.row.fullHint",
    });
    expect(row(ch({ deep_in_queue: true }), "backfill")).toMatchObject({
      disabled: true,
      note: "channels.row.queuedByOtherHint",
    });
  });

  it("gives an admin the reset, behind a confirm that names the reset", async () => {
    h.role = "admin";
    const reset = vi.spyOn(api, "resetChannelBackfill").mockResolvedValue({} as never);
    const it_ = row(ch({ backfill_done: true }), "backfill");
    expect(it_).toMatchObject({ label: "channels.row.resetBackfill" });
    expect(it_.disabled).toBeFalsy();
    await act(async () => it_.onSelect!());
    expect(h.confirm).toHaveBeenCalledWith(
      expect.objectContaining({
        title: "channels.row.resetBackfill",
        confirmLabel: "channels.row.resetBackfill",
      }),
    );
    await waitFor(() => expect(reset).toHaveBeenCalledWith("UC1"));
  });
});

describe("useChannelActions — hide and unsubscribe", () => {
  it("hides without a confirm, and the toast's Undo shows the channel again", async () => {
    const upd = vi.spyOn(api, "updateChannel").mockResolvedValue({} as never);
    const { result } = mount();
    act(() => result.current.items(ch(), { pin }).find((i) => i.id === "hide")!.onSelect!());
    await waitFor(() => expect(h.notify).toHaveBeenCalled());
    expect(h.confirm).not.toHaveBeenCalled();
    expect(upd).toHaveBeenCalledWith("UC1", { hidden: true });
    const toast = h.notify.mock.calls[0]![0] as {
      message: string;
      action: { onClick: () => void };
    };
    expect(toast.message).toBe("channels.notify.hidden");
    act(() => toast.action.onClick());
    await waitFor(() => expect(upd).toHaveBeenCalledWith("UC1", { hidden: false }));
  });

  it("unsubscribes only after the danger confirm says yes", async () => {
    const unsub = vi.spyOn(api, "unsubscribeChannel").mockResolvedValue({} as never);
    const { result } = mount();
    const unsubRow = () => result.current.items(ch(), { pin }).find((i) => i.id === "unsubscribe")!;
    h.confirm.mockImplementation(async () => false);
    await act(async () => unsubRow().onSelect!());
    expect(h.confirm).toHaveBeenCalledWith(expect.objectContaining({ danger: true }));
    expect(unsub).not.toHaveBeenCalled();
    h.confirm.mockImplementation(async () => true);
    await act(async () => unsubRow().onSelect!());
    await waitFor(() => expect(unsub).toHaveBeenCalledWith("UC1"));
  });
});

const sub = (it: ActionMenuItem) => (it.items ?? []) as ActionMenuItem[];

describe("useChannelActions — the Tags submenu", () => {
  it("lists the reader's tags A–Z, the channel's own ticked, each a toggle that stays open", () => {
    tags = [tag(3, "rust"), tag(1, "Go"), tag(2, "music")];
    const items = sub(row(ch({ tag_ids: [2] }), "tags"));
    expect(items.map((i) => i.label)).toEqual(["Go", "music", "rust"]);
    expect(items.map((i) => ("check" in i ? i.check : null))).toEqual([
      { kind: "many", checked: false },
      { kind: "many", checked: true },
      { kind: "many", checked: false },
    ]);
    items[1]!.onSelect!();
    expect(onToggleTag).toHaveBeenCalledWith(expect.objectContaining({ id: "UC1" }), 2);
  });

  // A failed /tags read said "no tags yet" — an error dressed as an empty list.
  it("says the tags are loading, or failed to load, instead of 'no tags yet'", () => {
    tagsState = "loading";
    expect(row(ch(), "tags")).toMatchObject({ disabled: true, note: "common.loading" });
    tagsState = "error";
    expect(row(ch(), "tags")).toMatchObject({ disabled: true, note: "common.loadError" });
  });

  it("stays in place, off, saying where tags are made, with no tag yet", () => {
    expect(row(ch(), "tags")).toMatchObject({ disabled: true, note: "channels.row.noTagsYet" });
    expect(row(ch(), "tags").items).toBeUndefined();
  });
});

describe("useChannelActions — the Priority submenu", () => {
  it("offers the fixed steps with the current one ticked, and picks a new one", () => {
    const items = sub(row(ch({ priority: 3 }), "priority"));
    expect(items.map((i) => i.label)).toEqual(["10", "5", "3", "2", "1", "0"]);
    expect(items.filter((i) => "check" in i && i.check?.checked).map((i) => i.label)).toEqual([
      "3",
    ]);
    expect(items.every((i) => "check" in i && i.check?.kind === "one")).toBe(true);
    items[0]!.onSelect!();
    expect(onPickPriority).toHaveBeenCalledWith(expect.objectContaining({ id: "UC1" }), 10);
  });

  it("shows an off-scale priority ticked in its place, and re-picking the current one is a no-op", () => {
    const items = sub(row(ch({ priority: 7 }), "priority"));
    expect(items.map((i) => i.label)).toEqual(["10", "7", "5", "3", "2", "1", "0"]);
    items[1]!.onSelect!();
    expect(onPickPriority).not.toHaveBeenCalled();
  });
});