// @vitest-environment jsdom
//
// The notification center: a row keeps its link and its unread mark in sight, its dismiss
// shows on hover (on touch it is in the "…"), and everything it can do is its ONE menu — opened by
// the row's "…" or a right-click; a hidden / watched notice's Find in feed and Undo live only there.
// The band keeps Mark all read; Clear everything moved into the header's "…" and asks first.
// i18n is key-passthrough, so labels read as keys.
import { afterEach, describe, expect, it, onTestFinished, vi } from "vitest";
import { act, cleanup, fireEvent, render, screen, waitFor } from "@testing-library/react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import { api, type AppNotification } from "../lib/api";
import type { Notification as ClientNotif } from "../lib/notifications";

const h = vi.hoisted(() => ({
  server: [] as unknown[],
  client: [] as unknown[],
  setPage: vi.fn(),
  setFilters: vi.fn(),
  remove: vi.fn(),
  clearAll: vi.fn(),
  confirm: vi.fn(async () => true),
}));

vi.mock("react-i18next", async (importOriginal) => ({
  ...(await importOriginal<typeof import("react-i18next")>()),
  useTranslation: () => ({ i18n: { language: "en" }, t: (key: string) => key }),
}));
vi.mock("./confirmContext", () => ({ useConfirm: () => h.confirm }));
vi.mock("../lib/useLiveQuery", () => ({
  useLiveQuery: () => ({
    data: { items: h.server, total: h.server.length },
    isError: false,
    isLoading: false,
    refetch: vi.fn(),
  }),
}));
vi.mock("../lib/notifications", async (importOriginal) => ({
  ...(await importOriginal<typeof import("../lib/notifications")>()),
  subscribe: () => () => {},
  getNotifications: () => h.client,
  getUnreadCount: () => 0,
  markAllRead: () => {},
  remove: (id: number) => h.remove(id),
  clearAll: () => h.clearAll(),
}));
vi.mock("./navigationContext", () => ({ useNavigationActions: () => ({ setPage: h.setPage }) }));
vi.mock("./channelsContext", () => ({ useChannelsActions: () => ({ focusChannel: vi.fn() }) }));
vi.mock("./feedFiltersContext", () => ({
  // Every narrowing a feed can carry (the year, the custom range, the length, the
  // content types and the scope survived "Find in feed" and could still hide the video).
  useFeedFilters: () => ({
    tags: [54],
    tagModes: { language: "and", topic: "or", other: "or" },
    untagged: true,
    q: "rust",
    maxAgeDays: 30,
    dateFrom: "2024-01-01",
    dateTo: "2024-02-01",
    year: 2024,
    minDuration: 60,
    maxDuration: 600,
    includeNormal: true,
    includeShorts: false,
    includeLive: false,
    scope: "my",
    librarySource: "organic",
    sort: "oldest",
    show: "unwatched",
    channelIds: ["x"],
  }),
  useFeedFiltersActions: () => ({ setFilters: h.setFilters }),
}));
vi.mock("./ui/PageShell", async (importOriginal) => ({
  ...(await importOriginal<typeof import("./ui/PageShell")>()),
  PageToolbar: ({ children }: { children: React.ReactNode }) => <>{children}</>,
}));

import NotificationsPanel from "./NotificationsPanel";
import PageShell from "./ui/PageShell";

afterEach(() => {
  cleanup();
  vi.restoreAllMocks();
  for (const f of [h.setPage, h.setFilters, h.remove, h.clearAll, h.confirm]) f.mockClear();
});

const server = (id: number, extra: Partial<AppNotification> = {}) =>
  ({
    id,
    type: "download_done",
    title: `Server ${id}`,
    body: `Body ${id}`,
    data: { title: `Ready ${id}` },
    read: false,
    created_at: new Date().toISOString(),
    ...extra,
  }) as unknown as AppNotification;
const client = (id: number, extra: Partial<ClientNotif> = {}) =>
  ({
    id,
    level: "success",
    message: `Activity ${id}`,
    requiresInteraction: false,
    ts: Date.now(),
    read: true,
    dismissed: true,
    transient: false,
    repeat: 1,
    ...extra,
  }) as unknown as ClientNotif;

function mount() {
  const client = new QueryClient();
  const tree = () => (
    <QueryClientProvider client={client}>
      <NotificationsPanel />
    </QueryClientProvider>
  );
  const { rerender } = render(tree());
  return { rerender: () => rerender(tree()) };
}
const rowOf = (text: string) => screen.getByText(text).closest<HTMLElement>("[data-nav-index]")!;
const moreOf = (text: string) =>
  rowOf(text).querySelector<HTMLElement>('button[aria-label="inbox.rowMenu"]')!;
const menuRows = () =>
  screen.getAllByRole("menuitem", { hidden: true }).map((b) => b.textContent ?? "");
async function openMenu(open: () => void) {
  act(open);
  await waitFor(() =>
    expect(screen.getAllByRole("menuitem", { hidden: true }).length).toBeGreaterThan(0),
  );
}
const choose = (label: string) =>
  fireEvent.click(
    screen.getAllByRole("menuitem", { hidden: true }).find((b) => b.textContent === label)!,
  );

describe("NotificationsPanel · a server row", () => {
  it("keeps its link and mark read in sight; dismiss shows on hover, then its '…'", () => {
    h.server = [server(1)];
    h.client = [];
    mount();
    const row = rowOf("Ready 1");
    expect(row.classList.contains("group")).toBe(true);
    const buttons = [...row.querySelectorAll("button")];
    expect(buttons.map((b) => b.getAttribute("aria-label") ?? b.textContent)).toEqual([
      "inbox.openDownloads",
      "inbox.markRead",
      "inbox.dismiss",
      "inbox.rowMenu",
    ]);
    // Hover-only on a mouse (and gone on touch, where the menu holds it).
    expect(buttons[2]!.className).toContain("reveal-hover");
    expect(moreOf("Ready 1").classList.contains("reveal")).toBe(true);
  });

  it("holds the link, mark read and dismiss", async () => {
    h.server = [server(1)];
    h.client = [];
    const dismiss = vi.spyOn(api, "dismissNotification").mockResolvedValue({} as never);
    mount();
    await openMenu(() => fireEvent.click(moreOf("Ready 1")));
    expect(menuRows()).toEqual(["inbox.openDownloads", "inbox.markRead", "inbox.dismiss"]);
    choose("inbox.dismiss");
    await waitFor(() => expect(dismiss).toHaveBeenCalledWith(1, expect.anything()));
  });

  it("closes on a second press of the same '…', on a server and an activity row", async () => {
    h.server = [server(1)];
    h.client = [client(8)];
    mount();
    for (const name of ["Ready 1", "Activity 8"]) {
      await openMenu(() => fireEvent.click(moreOf(name)));
      act(() => {
        fireEvent.pointerDown(moreOf(name), { pointerType: "mouse" });
        fireEvent.mouseDown(moreOf(name));
        fireEvent.click(moreOf(name), { detail: 1 });
      });
      await waitFor(() =>
        expect(screen.queryAllByRole("menuitem", { hidden: true })).toHaveLength(0),
      );
    }
  });

  it("still closes when a poll replaced the notification under the open menu", async () => {
    h.server = [server(1)];
    h.client = [];
    const { rerender } = mount();
    await openMenu(() => fireEvent.click(moreOf("Ready 1")));
    h.server = [server(1)]; // the next poll: a NEW object for the same notification
    rerender();
    act(() => {
      fireEvent.pointerDown(moreOf("Ready 1"), { pointerType: "mouse" });
      fireEvent.mouseDown(moreOf("Ready 1"));
      fireEvent.click(moreOf("Ready 1"), { detail: 1 });
    });
    await waitFor(() =>
      expect(screen.queryAllByRole("menuitem", { hidden: true })).toHaveLength(0),
    );
  });

  it("leaves mark read out of a read row's menu", async () => {
    h.server = [server(2, { read: true, type: "maintenance", data: {} } as never)];
    h.client = [];
    mount();
    await openMenu(() => fireEvent.contextMenu(rowOf("Server 2")));
    expect(menuRows()).toEqual(["inbox.dismiss"]);
  });
});

describe("NotificationsPanel · an activity row", () => {
  it("puts a hidden notice's Find in feed and Undo into its menu only", async () => {
    h.server = [];
    // Its toast is still up (not dismissed), so it carries the toast's Undo too: the row shows
    // neither that nor Find in feed — only its dismiss and its "…".
    h.client = [
      client(7, {
        dismissed: false,
        action: { label: "feed.undo", onClick: () => {} },
        meta: { kind: "video-hidden", videoId: "v", channelId: "c" },
      } as never),
    ];
    const setState = vi.spyOn(api, "setState").mockResolvedValue({} as never);
    mount();
    expect(
      [...rowOf("Activity 7").querySelectorAll("button")].map((b) => b.getAttribute("aria-label")),
    ).toEqual(["inbox.dismiss", "inbox.rowMenu"]);
    await openMenu(() => fireEvent.contextMenu(rowOf("Activity 7")));
    expect(menuRows()).toEqual([
      "notifications.findInFeed",
      "notifications.unhide",
      "inbox.dismiss",
    ]);
    choose("notifications.unhide");
    await waitFor(() => expect(setState).toHaveBeenCalledWith("v", "new"));
  });

  it("finds a watched notice's video with nothing narrowing the feed past it", async () => {
    h.server = [];
    h.client = [
      client(9, { meta: { kind: "video-watched", videoId: "v", channelId: "c" } } as never),
    ];
    mount();
    await openMenu(() => fireEvent.contextMenu(rowOf("Activity 9")));
    choose("notifications.findInFeed");
    await waitFor(() => expect(h.setFilters).toHaveBeenCalled());
    // Nothing but the state and the channel narrows; the reader's sort and tag modes stay theirs.
    expect(h.setFilters).toHaveBeenCalledWith({
      tags: [],
      tagModes: { language: "and", topic: "or", other: "or" },
      untagged: false,
      q: "",
      includeNormal: true,
      includeShorts: true,
      includeLive: true,
      scope: "all",
      librarySource: "all",
      sort: "oldest",
      show: "watched",
      channelIds: ["c"],
    });
    expect(h.setPage).toHaveBeenCalledWith("feed");
  });

  it("dismisses a plain activity row from its menu", async () => {
    h.server = [];
    h.client = [client(8)];
    mount();
    await openMenu(() => fireEvent.click(moreOf("Activity 8")));
    expect(menuRows()).toEqual(["inbox.dismiss"]);
    choose("inbox.dismiss");
    await waitFor(() => expect(h.remove).toHaveBeenCalledWith(8));
  });
});

describe("NotificationsPanel · the header's '…'", () => {
  it("keeps Mark all read in the band and asks before Clear everything", async () => {
    h.server = [server(1)];
    h.client = [client(8)];
    const clear = vi.spyOn(api, "clearNotifications").mockResolvedValue({} as never);
    mount();
    expect(screen.getByRole("button", { name: "inbox.markAllRead" })).toBeTruthy();
    expect(screen.queryByRole("button", { name: "inbox.clearAll" })).toBeNull();
    await openMenu(() => fireEvent.click(screen.getByRole("button", { name: "inbox.menu" })));
    expect(menuRows()).toEqual(["inbox.markAllRead", "inbox.clearAll"]);
    h.confirm.mockResolvedValueOnce(false);
    choose("inbox.clearAll");
    await waitFor(() => expect(h.confirm).toHaveBeenCalledTimes(1));
    expect(h.confirm).toHaveBeenCalledWith(expect.objectContaining({ danger: true }));
    expect(clear).not.toHaveBeenCalled();
    expect(h.clearAll).not.toHaveBeenCalled();
    await openMenu(() => fireEvent.click(screen.getByRole("button", { name: "inbox.menu" })));
    choose("inbox.clearAll");
    await waitFor(() => expect(clear).toHaveBeenCalled());
    expect(h.clearAll).toHaveBeenCalled();
  });
});

describe("NotificationsPanel · the page's background menu", () => {
  // DESIGN "Background menu": it mirrors the band, and a right-click on blank page must never be one
  // click from a destructive row — Clear everything stays behind the "…" and its confirm.
  it("holds Mark all read, never Clear everything", async () => {
    // PageShell measures its header and the scroller its edges; jsdom has no ResizeObserver.
    vi.stubGlobal(
      "ResizeObserver",
      class {
        observe() {}
        unobserve() {}
        disconnect() {}
      },
    );
    onTestFinished(() => {
      vi.unstubAllGlobals();
    });
    h.server = [server(1)];
    h.client = [client(8)];
    const client_ = new QueryClient();
    const { container } = render(
      <QueryClientProvider client={client_}>
        <PageShell>
          <NotificationsPanel />
        </PageShell>
      </QueryClientProvider>,
    );
    const blank = container.querySelector("main") ?? container.firstElementChild!;
    await openMenu(() => fireEvent.contextMenu(blank, { clientX: 5, clientY: 5 }));
    expect(screen.getByRole("menu", { hidden: true }).getAttribute("aria-label")).toBe(
      "common.pageMenu",
    );
    expect(menuRows()).toEqual(["inbox.markAllRead"]);
  });
});

describe("a download-lifecycle notice", () => {
  it("is named from its data in the reader's language, never the server's English title", () => {
    h.server = [
      server(1, {
        type: "download_shared",
        title: "Cats was shared with you",
        body: null,
        data: { kind: "download_shared", from: "a@b.c", title: "Cats" },
      } as never),
      server(2, {
        type: "download_expiring",
        title: "Dogs",
        data: { kind: "download_expiring", title: "Dogs" },
      } as never),
      server(3, {
        type: "download_expired",
        title: "download", // an untitled video: the server's English fallback word
        data: { kind: "download_expired", title: null },
      } as never),
      server(4, {
        type: "download_evicted",
        title: "Birds",
        data: { kind: "download_evicted", title: "Birds" },
      } as never),
    ];
    mount();
    for (const key of ["downloadShared", "downloadExpiring", "downloadExpired", "downloadEvicted"])
      expect(screen.getByText(`inbox.${key}.title`)).toBeTruthy();
    for (const title of ["Cats", "Dogs", "Birds"]) expect(screen.getByText(title)).toBeTruthy();
    expect(screen.queryByText("Cats was shared with you")).toBeNull();
    expect(screen.queryByText("download")).toBeNull();
  });
});

describe("NotificationsPanel · a finished job's title", () => {
  it("names what finished: a download, a clip, an upload", () => {
    h.server = [
      server(1),
      server(2, { data: { title: "Ready 2", kind: "edit" } }),
      server(3, { data: { title: "Ready 3", kind: "upload" } }),
    ];
    h.client = [];
    mount();
    const titleOf = (text: string) => rowOf(text).textContent ?? "";
    expect(titleOf("Ready 1")).toContain("inbox.downloadDone.title");
    expect(titleOf("Ready 2")).toContain("inbox.editDone.title");
    expect(titleOf("Ready 3")).toContain("inbox.uploadDone.title");
  });
});