// @vitest-environment jsdom
//
// S7 — the Personal-views manager gains an EDITABLE detail pane: captured filters are now removable
// chips that write the pruned set back to the stored view (undoable), an explicit Save-current button
// stores the live filters into the view, and rename has a visible commit affordance. This drives the
// real modal against a mocked savedViewsContext so we can assert exactly which mutation fires; the
// captured-filter row uses the REAL useActiveFilters (fed a tag from a seeded react-query cache), so
// the prune snapshots are the genuine ones the live chip row computes.
import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
import { render, screen, waitFor, cleanup, fireEvent } from "@testing-library/react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";

const h = vi.hoisted(() => ({
  updateFilters: vi.fn(async (_id: number, _filters: Record<string, unknown>) => true),
  saveCurrent: vi.fn(async (_id: number) => ({ saved: true }) as Record<string, unknown> | null),
  rename: vi.fn(async (_id: number, _name: string) => true),
  activeViewId: null as number | null,
}));

vi.mock("react-i18next", async (importOriginal) => {
  const actual = await importOriginal<typeof import("react-i18next")>();
  return { ...actual, useTranslation: () => ({ t: (key: string) => key }) };
});

// A full feed filter set that differs from the sidebar default ONLY in `tags`, so useActiveFilters
// surfaces exactly one chip (the tag) — a partial object would read missing show/sort/content as
// "active" and spray spurious chips.
const VIEW_FILTERS = {
  tags: [1],
  tagModes: { language: "or", topic: "or", other: "or" },
  untagged: false,
  channelIds: [],
  sort: "newest",
  includeNormal: true,
  includeShorts: false,
  includeLive: false,
  show: "unwatched",
  scope: "my",
  q: "",
};

const CTX = {
  source: "feed" as const,
  views: [{ id: 5, name: "Docs", filters: VIEW_FILTERS, position: 0, is_default: false }],
  loading: false,
  displayView: null,
  isDirty: false,
  modalOpen: true,
  openModal: vi.fn(),
  closeModal: vi.fn(),
  apply: vi.fn(),
  clearActive: vi.fn(),
  create: vi.fn(async () => true),
  reorder: vi.fn(async () => {}),
  remove: vi.fn(async () => true),
  toggleDefault: vi.fn(async () => {}),
};

vi.mock("./savedViewsContext", () => ({
  useSavedViews: () => ({
    ...CTX,
    activeViewId: h.activeViewId,
    updateFilters: h.updateFilters,
    saveCurrent: h.saveCurrent,
    rename: h.rename,
  }),
  // Passthrough coercion — the modal only needs tags/channelIds to be arrays before the chip builder.
  asFilters: (raw: Record<string, unknown>) => ({
    ...raw,
    tags: (raw.tags as unknown[]) ?? [],
    channelIds: (raw.channelIds as unknown[]) ?? [],
  }),
}));

import PersonalViewsModal from "./PersonalViewsModal";
import { api } from "../lib/api";
import { qk } from "../lib/queryKeys";

function mount() {
  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } });
  qc.setQueryData(qk.tags(), [{ id: 1, name: "Docu" }]);
  vi.spyOn(api, "tags").mockResolvedValue([{ id: 1, name: "Docu" }] as never);
  const utils = render(
    <QueryClientProvider client={qc}>
      <PersonalViewsModal />
    </QueryClientProvider>,
  );
  return { ...utils, qc };
}

beforeEach(() => {
  h.updateFilters.mockClear();
  h.saveCurrent.mockClear();
  h.rename.mockClear();
  h.activeViewId = null;
  // Fresh baseline each test — one test mutates CTX.views to simulate a refetch.
  CTX.views = [{ id: 5, name: "Docs", filters: VIEW_FILTERS, position: 0, is_default: false }];
});
afterEach(() => {
  cleanup();
  vi.restoreAllMocks();
});

describe("PersonalViewsModal — S7 editable detail pane", () => {
  it("removing a captured-filter chip writes the pruned filters back to the stored view", async () => {
    mount();
    const removeBtn = await screen.findByLabelText("feed.chips.remove");
    fireEvent.click(removeBtn);
    await waitFor(() => expect(h.updateFilters).toHaveBeenCalledTimes(1));
    expect(h.updateFilters.mock.calls[0]![0]).toBe(5);
    expect(h.updateFilters.mock.calls[0]![1]).toMatchObject({ tags: [] });
  });

  it("the prune is undoable — Undo re-persists the original filters", async () => {
    mount();
    fireEvent.click(await screen.findByLabelText("feed.chips.remove"));
    await waitFor(() => expect(h.updateFilters).toHaveBeenCalledTimes(1));
    // The undo control only appears once there is history.
    const undo = await screen.findByLabelText("common.undo");
    fireEvent.click(undo);
    await waitFor(() => expect(h.updateFilters).toHaveBeenCalledTimes(2));
    expect(h.updateFilters.mock.calls[1]![1]).toMatchObject({ tags: [1] });
  });

  it("a same-view refetch (new-identity filters) does not wipe the undo history", async () => {
    // Guards the [selectedId]-only re-seed effect (its exhaustive-deps disable): after a chip prune the
    // real provider refetches and hands back the SAME view id with a fresh-identity filters object. The
    // draft must NOT re-seed on that (it would destroy the undo history and the Undo control). A deps
    // regression that added selected.filters would make this fail.
    const { rerender, qc } = mount();
    fireEvent.click(await screen.findByLabelText("feed.chips.remove"));
    await waitFor(() => expect(h.updateFilters).toHaveBeenCalledTimes(1));
    expect(await screen.findByLabelText("common.undo")).toBeTruthy();

    // Simulate the post-write refetch: same id 5, new object identity, carrying the pruned value.
    CTX.views = [
      {
        id: 5,
        name: "Docs",
        filters: { ...VIEW_FILTERS, tags: [] },
        position: 0,
        is_default: false,
      },
    ];
    rerender(
      <QueryClientProvider client={qc}>
        <PersonalViewsModal />
      </QueryClientProvider>,
    );

    // Undo history survived the refetch — the control is still there and still re-persists on click.
    const undo = await screen.findByLabelText("common.undo");
    fireEvent.click(undo);
    await waitFor(() => expect(h.updateFilters).toHaveBeenCalledTimes(2));
    expect(h.updateFilters.mock.calls[1]![1]).toMatchObject({ tags: [1] });
  });

  it("Save-current stores the live filters into the view when it isn't already the active one", async () => {
    mount();
    fireEvent.click(await screen.findByText("views.saveCurrent"));
    await waitFor(() => expect(h.saveCurrent).toHaveBeenCalledWith(5));
  });

  it("Save-current is disabled when the selected view is already the active one", async () => {
    h.activeViewId = 5;
    mount();
    const btn = (await screen.findByText("views.saveCurrent")).closest(
      "button",
    ) as HTMLButtonElement;
    expect(btn.disabled).toBe(true);
    fireEvent.click(btn);
    expect(h.saveCurrent).not.toHaveBeenCalled();
  });

  it("rename commits via the visible check button once the name changes", async () => {
    mount();
    const input = await screen.findByDisplayValue("Docs");
    // No change yet → the commit button is disabled.
    const commit = screen.getByLabelText("views.rename").closest("button") as HTMLButtonElement;
    expect(commit.disabled).toBe(true);
    fireEvent.change(input, { target: { value: "Documentaries" } });
    expect(commit.disabled).toBe(false);
    fireEvent.click(commit);
    await waitFor(() => expect(h.rename).toHaveBeenCalledWith(5, "Documentaries"));
  });
});