// CategoriesPage and its getting-started card (#432). No jsdom:
// react-dom/server renders in vitest's node environment. The categories hook
// is stubbed (the page is loading, its header shows), and the path is a fake
// `useOnboarding()` built from the real checklist. What is pinned is the
// page's wiring: where the card sits, what it says, and which control carries
// the one highlight ("All keywords", never "Reset").
import { describe, it, expect, vi, beforeEach } from "vitest";
import { renderToStaticMarkup } from "react-dom/server";
import { MemoryRouter } from "react-router-dom";

vi.mock("../services/db", () => ({ getDb: vi.fn(), withTransaction: vi.fn() }));
vi.mock("react-i18next", async () => (await import("../test/i18nMock")).i18nMock());
vi.mock("../components/shared/PageHelp", () => ({ PageHelp: () => null }));

const harness = vi.hoisted(() => ({ onboarding: null as unknown }));

vi.mock("../contexts/OnboardingContext", () => ({ useOnboarding: () => harness.onboarding }));
vi.mock("../hooks/useCategories", () => ({
  useCategories: () => ({
    state: {
      categories: [],
      tree: [],
      keywords: [],
      selectedCategoryId: null,
      editingCategory: null,
      isCreating: false,
      isLoading: true,
      isSaving: false,
      error: null,
    },
  }),
}));

import CategoriesPage, { CATEGORIES_ALL_KEYWORDS_TARGET } from "./CategoriesPage";
import type { OnboardingValue } from "../hooks/useOnboardingChecklist";
import { computeChecklist } from "../utils/onboardingChecklist";
import { nextStep } from "../utils/onboardingPath";
import type { ChecklistItemKey, OnboardingCounters } from "../shared/types";

/** Folder, source and import done: the next step is the categories step. */
const IMPORTED: OnboardingCounters = {
  sources: 1,
  imports: 1,
  manualCategorized: 0,
  budgetEntries: 0,
  transactions: 41,
};

/** The path latched on /categories (card mode), as the provider shares it. */
function path(acknowledged: ChecklistItemKey[], overrides: Partial<OnboardingValue> = {}): OnboardingValue {
  const checklist = computeChecklist(IMPORTED, {
    importFolderSet: true,
    budgetAllowed: true,
    visitStepsInitialized: true,
    acknowledged,
  });
  return {
    status: "ready",
    checklist,
    counters: IMPORTED,
    hidden: false,
    budgetReady: true,
    visitStepsInitialized: true,
    nextStep: nextStep(checklist),
    mode: "card",
    cardPage: "/categories",
    hide: vi.fn(async () => undefined),
    show: vi.fn(async () => undefined),
    skip: vi.fn(async () => undefined),
    resume: vi.fn(async () => undefined),
    acknowledge: vi.fn(async () => undefined),
    refresh: vi.fn(async () => undefined),
    ...overrides,
  };
}

const render = () =>
  renderToStaticMarkup(
    <MemoryRouter initialEntries={["/categories"]}>
      <CategoriesPage />
    </MemoryRouter>,
  );

const CARD = 'aria-label="t(onboarding.banner.label)"';
const HIGHLIGHT = 'data-onboarding-highlight="true"';
const count = (html: string, needle: string) => html.split(needle).length - 1;
const sentence = (html: string) => html.match(/<\/h2><p [^>]*>(.*?)<\/p>/)?.[1] ?? null;

beforeEach(() => {
  harness.onboarding = path([]);
});

describe("CategoriesPage — the step card (#432)", () => {
  it("renders the card first, before the page's heading, fifth of eight", () => {
    const html = render();
    expect(count(html, CARD)).toBe(1);
    expect(html.indexOf(CARD)).toBeLessThan(html.indexOf("<h1"));
    expect(html).toContain("t(onboarding.card.stepOf[n=5,total=8])");
    expect(html).toContain("t(onboarding.checklist.items.categories)");
  });

  it("explains keywords, 'All keywords' named by its own label", () => {
    expect(sentence(render())).toBe(
      "t(onboarding.card.categories[allKeywords=t(categories.allKeywords)])",
    );
  });

  it("offers 'Got it' and 'Skip this step'", () => {
    const html = render();
    expect(html).toContain("t(onboarding.card.acknowledge)");
    expect(html).toContain("t(onboarding.card.skip)");
  });

  it("'All keywords' is the one target, never 'Reset'", () => {
    const html = render();
    expect(count(html, HIGHLIGHT)).toBe(1);
    expect(html).toContain(`data-onboarding-target="${CATEGORIES_ALL_KEYWORDS_TARGET}" ${HIGHLIGHT}`);
    const ring = html.indexOf(HIGHLIGHT);
    const allKeywords = html.indexOf("t(categories.allKeywords)</button>");
    const reset = html.indexOf("t(categories.reinitialize)</button>");
    // The ring sits on the button whose label closes right after it, before "Reset".
    expect(ring).toBeLessThan(allKeywords);
    expect(html.lastIndexOf("<button", allKeywords)).toBeLessThan(ring);
    expect(ring).toBeLessThan(reset);
  });

  it("the step acknowledged: 'Done.', the next step is the manual category, no ring", () => {
    harness.onboarding = path(["categories"]);
    const html = render();
    expect(count(html, CARD)).toBe(1);
    expect(html).toContain("t(onboarding.card.done)");
    expect(html).toContain("t(onboarding.checklist.items.manualCategory)");
    expect(html).not.toContain("t(onboarding.card.acknowledge)");
    expect(html).not.toContain(HIGHLIGHT);
  });

  it("without the card on screen, no card and no ring", () => {
    for (const overrides of [{ mode: "banner" as const }, { cardPage: null }, { cardPage: "/import" }]) {
      harness.onboarding = path([], overrides);
      const html = render();
      expect(html, JSON.stringify(overrides)).not.toContain(CARD);
      expect(html, JSON.stringify(overrides)).not.toContain(HIGHLIGHT);
    }
  });

  it("opening the page acknowledges nothing", () => {
    const value = harness.onboarding as OnboardingValue;
    render();
    expect(value.acknowledge).not.toHaveBeenCalled();
    expect(value.skip).not.toHaveBeenCalled();
  });
});