// @vitest-environment jsdom
//
// The Files rail's folder management: a new folder is named in place, a folder's right click opens its
// ONE menu (the page's "…" opens the same — Files.menu.dom.test), and a rename happens in the entry.
// A field left by Enter or Escape hands the keyboard back to what stands there now, never to <body>.
// The SidePanel chrome around the groups is stubbed; the writes are watched at the API.
import { afterEach, beforeAll, describe, expect, it, vi } from "vitest";
import { act, cleanup, fireEvent, render, screen, waitFor } from "@testing-library/react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import type { ReactNode } from "react";

vi.mock("react-i18next", async (importOriginal) => {
  const actual = await importOriginal<typeof import("react-i18next")>();
  return { ...actual, useTranslation: () => ({ t: (k: string) => k, i18n: { language: "en" } }) };
});
vi.mock("./confirmContext", () => ({ useConfirm: () => async () => false }));
vi.mock("./FilterRail", () => ({
  default: ({
    items,
    children,
  }: {
    items: { id: string; body: ReactNode }[];
    children: ReactNode;
  }) => (
    <>
      {items.map((i) => (
        <div key={i.id}>{i.body}</div>
      ))}
      {children}
    </>
  ),
}));

import FilesRail from "./FilesRail";
import { api, type FileFolder } from "../lib/api";
import { defaultLayout } from "../lib/panelLayout";

beforeAll(() => {
  class Stub {
    observe() {}
    unobserve() {}
    disconnect() {}
    takeRecords() {
      return [];
    }
  }
  globalThis.ResizeObserver ??= Stub as unknown as typeof ResizeObserver;
  globalThis.IntersectionObserver ??= Stub as unknown as typeof IntersectionObserver;
});

afterEach(() => {
  cleanup();
  vi.restoreAllMocks();
});

const folder = (id: number, extra: Partial<FileFolder>): FileFolder => ({
  id,
  kind: "source",
  source_key: null,
  name: null,
  retention_days: 30,
  count: 1,
  size_bytes: 0,
  created_at: null,
  ...extra,
});
const YT = folder(1, { source_key: "youtube" });
const OWN = folder(2, { kind: "own", name: "Receptek", retention_days: null });

async function mount(folders: FileFolder[] = [YT, OWN]) {
  vi.spyOn(api, "fileFolders").mockResolvedValue(folders);
  vi.spyOn(api, "filesUsage").mockResolvedValue({ unlimited: true, footprint_bytes: 0 } as never);
  render(
    <QueryClientProvider client={new QueryClient()}>
      <FilesRail
        layout={defaultLayout("files")}
        setLayout={vi.fn()}
        collapsed={false}
        onToggleCollapse={vi.fn()}
      />
    </QueryClientProvider>,
  );
  await screen.findByText("files.folder.new");
}

const entry = (name: string) => screen.getByText(name).closest<HTMLElement>("button")!;
const menuRows = () =>
  screen.getAllByRole("menuitem", { hidden: true }).map((b) => b.textContent ?? "");

describe("FilesRail · folders", () => {
  it("names a new folder in place; Enter makes it and gives the keyboard back", async () => {
    await mount();
    const create = vi.spyOn(api, "createFolder").mockResolvedValue(folder(3, { kind: "own" }));
    fireEvent.click(screen.getByText("files.folder.new"));
    const field = screen.getByRole("textbox", { name: "files.folder.newName" });
    fireEvent.change(field, { target: { value: "  Cimboráknak " } });
    fireEvent.keyDown(field, { key: "Enter" });
    await waitFor(() => expect(create).toHaveBeenCalledWith("Cimboráknak"));
    await waitFor(() =>
      expect(document.activeElement).toBe(screen.getByText("files.folder.new").closest("button")),
    );
  });

  it("Escape makes nothing; an empty name makes nothing", async () => {
    await mount();
    const create = vi.spyOn(api, "createFolder");
    fireEvent.click(screen.getByText("files.folder.new"));
    const field = screen.getByRole("textbox", { name: "files.folder.newName" });
    fireEvent.change(field, { target: { value: "Más" } });
    fireEvent.keyDown(field, { key: "Escape" });
    expect(screen.queryByRole("textbox")).toBeNull();
    fireEvent.click(screen.getByText("files.folder.new"));
    fireEvent.keyDown(screen.getByRole("textbox", { name: "files.folder.newName" }), {
      key: "Enter",
    });
    await act(async () => {});
    expect(create).not.toHaveBeenCalled();
  });

  it("a folder's right click opens its menu; a source folder's holds only its retention", async () => {
    await mount();
    act(() => {
      fireEvent.contextMenu(entry("Receptek"));
    });
    await waitFor(() =>
      expect(menuRows()).toEqual([
        "files.folder.rename",
        "files.folder.retention",
        "files.folder.delete",
      ]),
    );
    fireEvent.keyDown(document.activeElement!, { key: "Escape" });
    act(() => {
      fireEvent.contextMenu(entry("files.source.youtube"));
    });
    await waitFor(() => expect(menuRows()).toEqual(["files.folder.retention"]));
  });

  it("renames in the entry, and Enter hands the keyboard back to it", async () => {
    await mount();
    const update = vi.spyOn(api, "updateFolder").mockResolvedValue(OWN);
    act(() => {
      fireEvent.contextMenu(entry("Receptek"));
    });
    await waitFor(() => expect(menuRows()).toContain("files.folder.rename"));
    fireEvent.click(
      screen
        .getAllByRole("menuitem", { hidden: true })
        .find((b) => b.textContent === "files.folder.rename")!,
    );
    const field = await screen.findByRole("textbox", { name: "files.folder.rename" });
    fireEvent.change(field, { target: { value: "Ételek" } });
    fireEvent.keyDown(field, { key: "Enter" });
    await waitFor(() => expect(update).toHaveBeenCalledWith(2, { name: "Ételek" }));
    await waitFor(() => expect(document.activeElement).toBe(entry("Receptek")));
  });
});

describe("FilesRail · what it says when a part is empty or missing", () => {
  it("says nothing was downloaded only when nothing is there — not when it all moved into own folders", async () => {
    await mount([folder(1, { source_key: "youtube", count: 0 }), { ...OWN, count: 3 }]);
    expect(screen.queryByText("files.rail.noSources")).toBeNull();
    cleanup();
    await mount([folder(1, { source_key: "youtube", count: 0 }), { ...OWN, count: 0 }]);
    expect(screen.getByText("files.rail.noSources")).toBeTruthy();
  });

  it("a storage figure that failed to load says so, rather than the meter quietly not being there", async () => {
    vi.spyOn(api, "fileFolders").mockResolvedValue([YT, OWN]);
    vi.spyOn(api, "filesUsage").mockRejectedValue(new Error("down"));
    render(
      <QueryClientProvider
        client={new QueryClient({ defaultOptions: { queries: { retry: false } } })}
      >
        <FilesRail
          layout={defaultLayout("files")}
          setLayout={vi.fn()}
          collapsed={false}
          onToggleCollapse={vi.fn()}
        />
      </QueryClientProvider>,
    );
    expect(await screen.findByText("files.usage.failed")).toBeTruthy();
  });
});