// @vitest-environment jsdom
//
// The Access-requests panel's delete affordance and its three outcomes. The control's whole point is
// that it explains itself: an entry backed by an account keeps a focusable, labelled control instead
// of quietly missing one, and an address the server's env still allow-lists gets a warning BEFORE the
// irreversible click, not a correction after it.
//
// i18n is a key-passthrough so assertions read stable keys; the API and the confirm/notify
// singletons are stubbed so the panel can be driven without a server.
import { describe, it, expect, afterEach, beforeEach, vi } from "vitest";
import { render, screen, cleanup, waitFor, fireEvent } 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: () => ({
      // Echo the interpolation too, so a message that forgets its {{email}} is visible in the test.
      t: (key: string, vars?: Record<string, unknown>) =>
        vars?.email ? `${key}:${String(vars.email)}` : key,
      i18n: { language: "en" },
    }),
  };
});

type ConfirmOpts = { title?: string; message?: string; confirmLabel?: string; danger?: boolean };
const confirmMock = vi.fn(async (_opts: ConfirmOpts) => true);
vi.mock("./ConfirmProvider", () => ({
  useConfirm: () => confirmMock,
  ConfirmProvider: ({ children }: { children: React.ReactNode }) => children,
}));

const notifyMock = vi.fn();
vi.mock("../lib/notifications", async (importOriginal) => {
  const actual = await importOriginal<typeof import("../lib/notifications")>();
  return { ...actual, notify: (...a: unknown[]) => notifyMock(...a) };
});

const meMock = { pending_invites: 0, email_configured: true, id: 1, role: "admin" };
vi.mock("../lib/useMe", () => ({ useMe: () => meMock }));

// The tab strip is rendered into an app-level toolbar slot that does not exist here, so pin the
// active tab directly — this file is about the Access-requests panel, not the tab chrome.
vi.mock("./Tabs", () => ({
  default: () => null,
  usePersistedTab: () => ["access", () => {}],
}));

const listMock = vi.fn();
const deleteMock = vi.fn();
vi.mock("../lib/api", async (importOriginal) => {
  const actual = await importOriginal<typeof import("../lib/api")>();
  return {
    ...actual,
    api: {
      ...actual.api,
      adminInvites: () => listMock(),
      deleteInvite: (id: number) => deleteMock(id),
    },
  };
});

import { HttpError } from "../lib/api";
import AdminUsers from "./AdminUsers";

const invite = (over: Partial<Record<string, unknown>> = {}) => ({
  id: 1,
  email: "asker@example.com",
  status: "pending",
  note: null,
  requested_at: null,
  decided_at: null,
  decided_by: null,
  has_account: false,
  still_allowed_by_env: false,
  ...over,
});

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

beforeEach(() => {
  confirmMock.mockClear().mockResolvedValue(true);
  notifyMock.mockClear();
  deleteMock.mockReset().mockResolvedValue({ deleted: 1, still_allowed_by_env: false });
  listMock.mockReset().mockResolvedValue([invite()]);
  meMock.email_configured = true;
});
afterEach(cleanup);

const openAccessTab = async () => {
  await screen.findByText("settings.invites.title");
};

describe("Access requests — the delete affordance", () => {
  it("offers a labelled delete on an entry with no account behind it", async () => {
    renderPanel();
    await openAccessTab();

    const btn = await screen.findByLabelText("settings.invites.deleteLabel:asker@example.com");
    expect(btn.getAttribute("aria-disabled")).toBeNull();
  });

  it("keeps the control present and focusable — not missing — when the address has an account", async () => {
    listMock.mockResolvedValue([invite({ has_account: true })]);
    renderPanel();
    await openAccessTab();

    const btn = await screen.findByLabelText("settings.invites.deleteHasAccount");
    // aria-disabled, not `disabled`: a disabled button leaves the tab order and takes its
    // explanation with it, which is the whole reason the control is shown at all.
    expect(btn.getAttribute("aria-disabled")).toBe("true");
    expect((btn as HTMLButtonElement).disabled).toBe(false);
    expect(btn.getAttribute("title")).toBe("settings.invites.deleteHasAccount");
    expect(screen.queryByLabelText(/deleteLabel/)).toBeNull();
  });

  it("keeps the same control on the previously-decided list, where the case is commonest", async () => {
    // The affordance exists twice — the pending rows and the collapsed "decided" list — and an
    // approved address that has since registered lands in the second one. Both must behave alike.
    listMock.mockResolvedValue([invite({ status: "approved", has_account: true })]);
    renderPanel();
    await openAccessTab();

    fireEvent.click(await screen.findByText(/settings\.invites\.decided/));
    const btn = await screen.findByLabelText("settings.invites.deleteHasAccount");
    expect(btn.getAttribute("aria-disabled")).toBe("true");
    expect((btn as HTMLButtonElement).disabled).toBe(false);
  });

  it("offers a working delete on a decided entry with no account", async () => {
    listMock.mockResolvedValue([invite({ status: "denied" })]);
    renderPanel();
    await openAccessTab();

    fireEvent.click(await screen.findByText(/settings\.invites\.decided/));
    fireEvent.click(await screen.findByLabelText("settings.invites.deleteLabel:asker@example.com"));

    await waitFor(() => expect(deleteMock).toHaveBeenCalledWith(1));
  });

  it("warns in the confirmation — before the click is irreversible — when the env still allows it", async () => {
    listMock.mockResolvedValue([invite({ still_allowed_by_env: true })]);
    renderPanel();
    await openAccessTab();

    fireEvent.click(await screen.findByLabelText("settings.invites.deleteLabel:asker@example.com"));

    expect(confirmMock).toHaveBeenCalledTimes(1);
    expect(confirmMock.mock.calls[0]![0]).toMatchObject({
      message: "settings.invites.deleteConfirmStillAllowed:asker@example.com",
      danger: true,
    });
  });

  it("uses the plain confirmation otherwise", async () => {
    renderPanel();
    await openAccessTab();

    fireEvent.click(await screen.findByLabelText("settings.invites.deleteLabel:asker@example.com"));

    expect(confirmMock.mock.calls[0]![0]).toMatchObject({
      message: "settings.invites.deleteConfirm:asker@example.com",
    });
  });

  it("says the entry kept its access when the server reports the env allow-list", async () => {
    deleteMock.mockResolvedValue({ deleted: 1, still_allowed_by_env: true });
    renderPanel();
    await openAccessTab();

    fireEvent.click(await screen.findByLabelText("settings.invites.deleteLabel:asker@example.com"));

    await waitFor(() =>
      expect(notifyMock).toHaveBeenCalledWith({
        level: "warning",
        message: "settings.invites.deletedStillAllowed",
      }),
    );
  });

  it("turns a 409 into the actionable reason rather than a generic failure", async () => {
    // The stale-list case: someone registered on the address after the page loaded.
    deleteMock.mockRejectedValue(new HttpError(409, "That address already has an account"));
    renderPanel();
    await openAccessTab();

    fireEvent.click(await screen.findByLabelText("settings.invites.deleteLabel:asker@example.com"));

    await waitFor(() =>
      expect(notifyMock).toHaveBeenCalledWith({
        level: "error",
        message: "settings.invites.deleteHasAccount",
      }),
    );
  });

  it("shows the mail-is-off warning only while email is unconfigured", async () => {
    renderPanel();
    await openAccessTab();
    expect(screen.queryByText("settings.invites.emailOff")).toBeNull();
    cleanup();

    meMock.email_configured = false;
    renderPanel();
    await openAccessTab();
    expect(await screen.findByText("settings.invites.emailOff")).toBeTruthy();
  });
});