import { readFileSync } from "node:fs";
import { join } from "node:path";
import { render, screen } from "@testing-library/react";
import type { PortfolioProjectView } from "@/lib/portfolio-data";
import CinematicHome from "./CinematicHome";
import { useCinematicScroll } from "./useCinematicScroll";
import { useHomeFragmentNavigation } from "./useHomeFragmentNavigation";

/**
 * Testes de caminhos-base de CinematicHome: a repasse das props opcionais, a ordem das cenas (sem rodapé próprio: ele
 * vem do layout) e a ligação dos hooks.
 * As cenas e os hooks são trocados por dublês que registram o que recebem.
 */

const mockHeroProps = jest.fn();
const mockProjectsProps = jest.fn();
const mockModalitiesProps = jest.fn();
const mockTestimonialsProps = jest.fn();

jest.mock("../Hero", () => ({
  __esModule: true,
  default: (props: unknown) => {
    mockHeroProps(props);
    return <section data-testid="scene-hero" />;
  },
}));
jest.mock("../Projects", () => ({
  __esModule: true,
  default: (props: unknown) => {
    mockProjectsProps(props);
    return <section data-testid="scene-projects" />;
  },
}));
jest.mock("../About", () => ({
  __esModule: true,
  default: () => <section data-testid="scene-about" />,
}));
jest.mock("../WorkModalities", () => ({
  WorkModalities: (props: unknown) => {
    mockModalitiesProps(props);
    return <section data-testid="scene-modalities" />;
  },
}));
jest.mock("../HomeFaq", () => ({
  __esModule: true,
  default: () => <section data-testid="scene-faq" />,
}));
jest.mock("../Testimonials", () => ({
  __esModule: true,
  default: (props: unknown) => {
    mockTestimonialsProps(props);
    return <section data-testid="scene-testimonials" />;
  },
}));
jest.mock("../Contact", () => ({
  __esModule: true,
  default: () => <section data-testid="scene-contact" />,
}));
jest.mock("./useCinematicScroll", () => ({ useCinematicScroll: jest.fn() }));
jest.mock("./useHomeFragmentNavigation", () => ({
  useHomeFragmentNavigation: jest.fn(),
}));

const onLayoutReady = jest.fn();

function project(id: string, demoUrl: string | null): PortfolioProjectView {
  return { id, demoUrl } as unknown as PortfolioProjectView;
}

const lastHeroProps = () =>
  mockHeroProps.mock.calls[mockHeroProps.mock.calls.length - 1][0];

beforeEach(() => {
  jest.clearAllMocks();
  jest.mocked(useHomeFragmentNavigation).mockReturnValue(onLayoutReady);
});

describe("CinematicHome: props e estrutura", () => {
  it("path: every optional prop given -> each scene receives its own data", () => {
    const projects = [project("lavacao-047", "https://a.example.com")];
    const clients = [{ id: "lavacao-047", name: "Lavação 047" }];
    const testimonials = [
      { quote: "Ótimo.", name: "Ana", role: "Sócia", company: "Empresa" },
    ];

    render(
      <CinematicHome
        projects={projects}
        clients={clients}
        testimonials={testimonials}
        heroStats={{ years: 5 }}
      />,
    );

    expect(lastHeroProps()).toMatchObject({ stats: { years: 5 }, clients });
    expect(mockProjectsProps).toHaveBeenCalledWith({ projects });
    expect(mockTestimonialsProps).toHaveBeenCalledWith({ items: testimonials });
    // as ofertas não recebem mais os serviços do hub: a grade duplicada saiu da seção
    expect(mockModalitiesProps).toHaveBeenCalledWith({});
  });

  it("path: optional props omitted -> the scenes receive undefined and decide their own defaults", () => {
    render(<CinematicHome projects={[]} />);

    expect(lastHeroProps()).toMatchObject({
      stats: undefined,
      clients: undefined,
    });
    expect(mockTestimonialsProps).toHaveBeenCalledWith({ items: undefined });
    expect(mockModalitiesProps).toHaveBeenCalledWith({});
  });

  it("path: scenes sit in order inside <main> (hero, projects, offers, about, FAQ, contact; no AI block); the home has no footer of its own (it comes from the layout)", () => {
    render(<CinematicHome projects={[]} />);

    const main = screen.getByRole("main");
    expect(
      Array.from(main.children).map((child) =>
        child.getAttribute("data-testid"),
      ),
    ).toEqual([
      "scene-hero",
      "scene-projects",
      "scene-modalities",
      "scene-about",
      "scene-testimonials",
      "scene-faq",
      "scene-contact",
    ]);
    // o rodapé é do layout: a home não desenha um (seria o segundo da página)
    expect(screen.queryByRole("contentinfo")).toBeNull();
    expect(document.querySelector("footer")).toBeNull();
  });

  it("path: mount -> the scroll hook gets the <main> ref and the layout-ready callback runs once", () => {
    render(<CinematicHome projects={[]} />);

    const ref = jest.mocked(useCinematicScroll).mock.calls[0][0];
    expect(ref.current).toBe(screen.getByRole("main"));
    expect(onLayoutReady).toHaveBeenCalledTimes(1);
  });
});

describe("CinematicHome: componente de servidor", () => {
  const source = readFileSync(join(__dirname, "CinematicHome.tsx"), "utf8");

  it("path: the file is a server component: no 'use client' and no React hooks, which live in the CinematicMain island", () => {
    expect(source).not.toMatch(/^["']use client["']/m);
    expect(source).not.toMatch(
      /\buse(?:State|Effect|LayoutEffect|Ref|Callback|Memo)\b/,
    );
    expect(source).not.toMatch(/useCinematicScroll|useHomeFragmentNavigation/);
    expect(source).toContain('import CinematicMain from "./CinematicMain"');
  });

  it("path: the island is the only client file of the pair, and it wraps the scenes as children", () => {
    const island = readFileSync(join(__dirname, "CinematicMain.tsx"), "utf8");

    expect(island).toMatch(/^"use client";/);
    expect(island).toMatch(/children/);
    expect(island).toContain("useCinematicScroll");
    expect(island).toContain("useHomeFragmentNavigation");
  });
});