import {
  act,
  cleanup,
  fireEvent,
  render,
  screen,
  within,
} from "@testing-library/react";
import { StrictMode } from "react";
import { getFeaturedProjects } from "@/lib/portfolio-data";
import {
  chapterFraction,
  getShowcaseConfig,
  mobileFractionAt,
} from "@/lib/project-showcase";
import { ShowcaseProvider, useShowcaseOpen } from "./ShowcaseProvider";

let reducedMotion = false;
// a janela ampliada chega sob demanda (React.lazy): aqui entra já, para o teste não esperar
jest.mock("./ProjectLightboxLazy", () => ({
  ProjectLightboxLazy: jest.requireActual("./ProjectLightbox").ProjectLightbox,
}));

jest.mock("@/app/hooks/useReducedMotion", () => ({
  useReducedMotion: () => reducedMotion,
}));

function Card({ id }: { id: string }) {
  const openProject = useShowcaseOpen();
  return (
    <article className="ds-card">
      <button type="button" onClick={() => openProject(id)}>
        ampliar {id}
      </button>
    </article>
  );
}

const projects = getFeaturedProjects(null);
const lavacao = getShowcaseConfig("lavacao-047");

function setup(id = "lavacao-047") {
  render(
    <ShowcaseProvider projects={projects}>
      <Card id="sev-modaintima" />
      <Card id="lavacao-047" />
      <Card id="nutriscan" />
      <Card id="as-servicos" />
    </ShowcaseProvider>,
  );
  fireEvent.click(screen.getByRole("button", { name: `ampliar ${id}` }));
  return screen.getByRole("dialog");
}

/** jsdom não carrega mídia: o teste dá ao <video> uma duração e deixa o componente reagir como no navegador. */
function loadVideo(dialog: HTMLElement, duration = 30) {
  const video = dialog.querySelector("video") as HTMLVideoElement;
  Object.defineProperty(video, "duration", {
    configurable: true,
    value: duration,
  });
  let time = 0;
  Object.defineProperty(video, "currentTime", {
    configurable: true,
    get: () => time,
    set: (value: number) => {
      time = value;
    },
  });
  act(() => {
    video.dispatchEvent(new Event("loadedmetadata"));
  });
  return video;
}

beforeAll(() => {
  window.matchMedia = jest.fn().mockImplementation((query: string) => ({
    matches: false,
    media: query,
    addEventListener() {},
    removeEventListener() {},
  }));
  // jsdom ainda não implementa o <dialog> modal
  HTMLDialogElement.prototype.showModal = function showModal(
    this: HTMLDialogElement,
  ) {
    this.setAttribute("open", "");
  };
  HTMLDialogElement.prototype.close = function close(this: HTMLDialogElement) {
    this.removeAttribute("open");
    this.dispatchEvent(new Event("close"));
  };
});

beforeEach(() => {
  reducedMotion = false;
  jest
    .spyOn(HTMLMediaElement.prototype, "play")
    .mockImplementation(function play(this: HTMLMediaElement) {
      // jsdom não toca nada: o teste mantém `paused` e os eventos como o navegador faria
      Object.defineProperty(this, "paused", {
        configurable: true,
        value: false,
      });
      this.dispatchEvent(new Event("play"));
      return Promise.resolve();
    });
  jest
    .spyOn(HTMLMediaElement.prototype, "pause")
    .mockImplementation(function pause(this: HTMLMediaElement) {
      Object.defineProperty(this, "paused", {
        configurable: true,
        value: true,
      });
      this.dispatchEvent(new Event("pause"));
    });
});

afterEach(() => {
  jest.restoreAllMocks();
  document.documentElement.classList.remove("ds-lb-open");
});

describe("ProjectLightbox", () => {
  it("opens a modal dialog for the clicked project, locks page scroll and puts focus on close", () => {
    const dialog = setup();

    expect(dialog).toHaveAttribute("open");
    expect(dialog).toHaveAccessibleName("Lavação 047");
    expect(dialog).toHaveAttribute("data-lenis-prevent");
    expect(document.documentElement).toHaveClass("ds-lb-open");
    expect(
      within(dialog).getByRole("button", { name: "Fechar" }),
    ).toHaveFocus();
    expect(within(dialog).getByText("02 / 06")).toBeInTheDocument();
  });

  it("shows the desktop video in a browser frame by default and the phone version on request", () => {
    const dialog = setup();
    const toggle = within(dialog).getByRole("group", {
      name: "Versão do site",
    });

    expect(
      within(toggle).getByRole("button", { name: "Computador" }),
    ).toHaveAttribute("aria-pressed", "true");
    expect(dialog.querySelector(".ds-lb-frame")).not.toBeNull();
    expect(dialog.querySelector('source[src$="desktop.webm"]')).not.toBeNull();

    fireEvent.click(within(toggle).getByRole("button", { name: "Celular" }));
    expect(
      within(toggle).getByRole("button", { name: "Celular" }),
    ).toHaveAttribute("aria-pressed", "true");
    expect(dialog.querySelector(".ds-lb-phone")).not.toBeNull();
    expect(dialog.querySelector('source[src$="mobile.webm"]')).not.toBeNull();
  });

  it("keeps the same point of the site when switching devices", () => {
    if (!lavacao) throw new Error("config ausente");
    const dialog = setup();
    const desktop = loadVideo(dialog, lavacao.durations.desktop);

    // meio do vídeo desktop
    desktop.currentTime = lavacao.durations.desktop * 0.5;
    fireEvent.click(within(dialog).getByRole("button", { name: "Celular" }));
    const phone = loadVideo(dialog, lavacao.durations.mobile);

    expect(phone.currentTime).toBeCloseTo(
      mobileFractionAt(lavacao, 0.5) * lavacao.durations.mobile,
      5,
    );
  });

  it("jumps to a chapter and marks it as current", () => {
    if (!lavacao) throw new Error("config ausente");
    const dialog = setup();
    const video = loadVideo(dialog, lavacao.durations.desktop);

    fireEvent.click(
      within(dialog).getByRole("button", { name: /Do sujo ao brilho/ }),
    );

    expect(video.currentTime).toBeCloseTo(
      chapterFraction(lavacao, 1, "desktop") * lavacao.durations.desktop,
      5,
    );
    expect(
      within(dialog).getByRole("button", { name: /Do sujo ao brilho/ }),
    ).toHaveAttribute("aria-current", "true");
  });

  it("toggles play and pause with an accessible name", () => {
    const dialog = setup();
    loadVideo(dialog);

    const play = within(dialog).getByRole("button", { name: "Reproduzir" });
    fireEvent.click(play);
    expect(
      within(dialog).getByRole("button", { name: "Pausar" }),
    ).toBeInTheDocument();
    fireEvent.click(within(dialog).getByRole("button", { name: "Pausar" }));
    expect(
      within(dialog).getByRole("button", { name: "Reproduzir" }),
    ).toBeInTheDocument();
  });

  it("shows the duration when the video already has its metadata at opening (loadedmetadata never fires again)", () => {
    jest
      .spyOn(HTMLMediaElement.prototype, "readyState", "get")
      .mockReturnValue(1);
    jest
      .spyOn(HTMLMediaElement.prototype, "duration", "get")
      .mockReturnValue(75);

    const dialog = setup();

    expect(dialog.querySelector(".ds-lb-time")?.textContent).toBe(
      "0:00 / 1:15",
    );
  });

  it("shows –:– / –:– until the duration is there, then reads it from the playback tick", () => {
    const frames: FrameRequestCallback[] = [];
    jest.spyOn(window, "requestAnimationFrame").mockImplementation((cb) => {
      frames.push(cb);
      return frames.length;
    });
    const dialog = setup();
    expect(dialog.querySelector(".ds-lb-time")?.textContent).toBe("–:– / –:–");
    // o leitor de tela também não ouve "0:00 de 0:00"
    expect(dialog.querySelector(".ds-lb-range")).toHaveAttribute(
      "aria-valuetext",
      "duração ainda não carregada",
    );

    const video = dialog.querySelector("video") as HTMLVideoElement;
    Object.defineProperty(video, "duration", {
      configurable: true,
      value: 42,
    });
    // sem evento algum: quem lê é o marcador, quadro a quadro, enquanto o vídeo toca
    act(() => {
      video.dispatchEvent(new Event("play"));
    });
    act(() => {
      for (const frame of frames.splice(0)) frame(0);
    });

    expect(dialog.querySelector(".ds-lb-time")?.textContent).toBe(
      "0:00 / 0:42",
    );
  });

  it("seeks with the range slider", () => {
    const dialog = setup();
    const video = loadVideo(dialog, 30);

    fireEvent.change(
      within(dialog).getByRole("slider", { name: "Posição do vídeo" }),
      { target: { value: "500" } },
    );
    expect(video.currentTime).toBeCloseTo(15, 5);
  });

  it("moves between projects and disables the arrows at both ends", () => {
    const dialog = setup("sev-modaintima");
    expect(
      within(dialog).getByRole("button", { name: "Projeto anterior" }),
    ).toBeDisabled();

    fireEvent.click(
      within(dialog).getByRole("button", { name: "Próximo projeto" }),
    );
    expect(screen.getByRole("dialog")).toHaveAccessibleName("Lavação 047");

    fireEvent.keyDown(screen.getByRole("dialog"), { key: "ArrowLeft" });
    expect(screen.getByRole("dialog")).toHaveAccessibleName("SEV Moda Íntima");
  });

  it("offers the case and, when the site exists, a text link to it in a new tab; never the code", () => {
    const dialog = setup("lavacao-047");
    expect(
      within(dialog).getByRole("link", { name: /Ver case/ }),
    ).toHaveAttribute("href", "/cases/lavacao-047");
    const site = within(dialog).getByRole("link", { name: /Abrir site/ });
    expect(site).toHaveAttribute(
      "href",
      "https://landing-page-lavacao047.vercel.app",
    );
    expect(site).toHaveAttribute("target", "_blank");
    expect(site).toHaveClass("ds-link-text");
    expect(dialog.querySelector(".ds-link-accent")).toBeNull();
    expect(within(dialog).queryByRole("link", { name: /código/i })).toBeNull();
    expect(dialog.innerHTML).not.toContain("github.com");
  });

  it("has no site link, and an address bar with only the project name, for a project without a live site", () => {
    const dialog = setup("as-servicos");
    expect(
      within(dialog).queryByRole("link", { name: /Abrir site/ }),
    ).toBeNull();
    expect(
      within(dialog).getByRole("link", { name: /Ver case/ }),
    ).toHaveAttribute("href", "/cases/as-servicos");
    expect(dialog.querySelector(".ds-bframe-url")?.textContent).toBe(
      "AS Serviços",
    );
  });

  it("opens on the phone version below 768 px", () => {
    const original = window.matchMedia;
    window.matchMedia = jest.fn().mockImplementation((query: string) => ({
      matches: query === "(max-width: 767px)",
      media: query,
      addEventListener() {},
      removeEventListener() {},
    }));
    try {
      const dialog = setup();
      expect(
        within(dialog).getByRole("button", { name: "Celular" }),
      ).toHaveAttribute("aria-pressed", "true");
      expect(dialog.querySelector(".ds-lb-phone")).not.toBeNull();
    } finally {
      window.matchMedia = original;
    }
  });

  it("does not autoplay, nor preload the whole file, with the data saver on", () => {
    Object.defineProperty(navigator, "connection", {
      configurable: true,
      value: { saveData: true },
    });
    try {
      const dialog = setup();
      const video = dialog.querySelector("video") as HTMLVideoElement;
      expect(video).not.toHaveAttribute("autoplay");
      expect(video).toHaveAttribute("preload", "metadata");
      expect(HTMLMediaElement.prototype.play).not.toHaveBeenCalled();
    } finally {
      Object.defineProperty(navigator, "connection", {
        configurable: true,
        value: undefined,
      });
    }
  });

  it("closes with the close button, with the backdrop or with Esc, and unlocks the page", () => {
    setup();
    fireEvent.click(screen.getByRole("button", { name: "Fechar" }));
    expect(screen.queryByRole("dialog")).toBeNull();
    expect(document.documentElement).not.toHaveClass("ds-lb-open");

    cleanup();
    const dialog = setup();
    fireEvent.pointerDown(dialog);
    fireEvent.click(dialog); // clique no fundo (o próprio <dialog>)
    expect(screen.queryByRole("dialog")).toBeNull();

    cleanup();
    const again = setup();
    act(() => {
      again.removeAttribute("open"); // o Esc nativo fecha o <dialog> e só então dispara `close`
      again.dispatchEvent(new Event("close"));
    });
    expect(screen.queryByRole("dialog")).toBeNull();
    expect(document.documentElement).not.toHaveClass("ds-lb-open");
  });

  it("does not autoplay for users who prefer reduced motion", () => {
    reducedMotion = true;
    const dialog = setup();
    expect(dialog.querySelector("video")).not.toHaveAttribute("autoplay");
  });
});

describe("ProjectLightbox: revisão", () => {
  it("survives React StrictMode in development: the double effect must not close the window it just opened", () => {
    // o `close` real é assíncrono: o teste reproduz isso para pegar o evento atrasado
    HTMLDialogElement.prototype.close = function close(
      this: HTMLDialogElement,
    ) {
      this.removeAttribute("open");
      queueMicrotask(() => this.dispatchEvent(new Event("close")));
    };
    jest.useFakeTimers();
    try {
      render(
        <StrictMode>
          <ShowcaseProvider projects={projects}>
            <Card id="lavacao-047" />
          </ShowcaseProvider>
        </StrictMode>,
      );
      fireEvent.click(
        screen.getByRole("button", { name: "ampliar lavacao-047" }),
      );
      act(() => {
        jest.advanceTimersByTime(50);
      });
      expect(screen.getByRole("dialog")).toHaveAttribute("open");
    } finally {
      jest.useRealTimers();
      HTMLDialogElement.prototype.close = function close(
        this: HTMLDialogElement,
      ) {
        this.removeAttribute("open");
        this.dispatchEvent(new Event("close"));
      };
    }
  });

  it("ignores a late close event from a dialog that is open again", () => {
    const dialog = setup();
    act(() => {
      dialog.dispatchEvent(new Event("close"));
    });
    expect(screen.getByRole("dialog")).toBeInTheDocument();
  });

  it("does not close when a press starts inside the panel and is released on the backdrop", () => {
    const dialog = setup();
    fireEvent.pointerDown(
      within(dialog).getByRole("slider", { name: "Posição do vídeo" }),
    );
    fireEvent.click(dialog);
    expect(screen.getByRole("dialog")).toBeInTheDocument();
  });

  it("stays paused after switching device when the visitor had paused", () => {
    const dialog = setup();
    loadVideo(dialog);
    fireEvent.click(within(dialog).getByRole("button", { name: "Reproduzir" }));
    fireEvent.click(within(dialog).getByRole("button", { name: "Pausar" }));

    fireEvent.click(within(dialog).getByRole("button", { name: "Celular" }));
    expect(dialog.querySelector("video")).not.toHaveAttribute("autoplay");
    expect(
      within(dialog).getByRole("button", { name: "Reproduzir" }),
    ).toBeInTheDocument();
  });

  it("keeps playing after switching device when the video was playing", () => {
    const dialog = setup();
    loadVideo(dialog);
    fireEvent.click(within(dialog).getByRole("button", { name: "Reproduzir" }));

    fireEvent.click(within(dialog).getByRole("button", { name: "Celular" }));
    expect(dialog.querySelector("video")).toHaveAttribute("autoplay");
  });

  it("keeps the position when the visitor flips the device twice before the new video loads", () => {
    if (!lavacao) throw new Error("config ausente");
    const dialog = setup();
    const desktop = loadVideo(dialog, lavacao.durations.desktop);
    desktop.currentTime = lavacao.durations.desktop * 0.5;

    fireEvent.click(within(dialog).getByRole("button", { name: "Celular" }));
    // o vídeo do celular ainda não carregou (sem duração): volta de novo para o computador
    fireEvent.click(within(dialog).getByRole("button", { name: "Computador" }));
    const back = loadVideo(dialog, lavacao.durations.desktop);

    expect(back.currentTime / lavacao.durations.desktop).toBeCloseTo(0.5, 1);
  });

  it("moves focus to the opposite arrow when the pressed one reaches its end", () => {
    const dialog = setup("nutriscan");
    // anterior, anterior: chega ao primeiro e o botão "Anterior" fica desabilitado
    let current = within(dialog).getByRole("button", {
      name: "Projeto anterior",
    });
    current.focus();
    fireEvent.click(current);
    current = within(screen.getByRole("dialog")).getByRole("button", {
      name: "Projeto anterior",
    });
    current.focus();
    fireEvent.click(current);

    const after = within(screen.getByRole("dialog"));
    expect(screen.getByRole("dialog")).toHaveAccessibleName("SEV Moda Íntima");
    expect(
      after.getByRole("button", { name: "Projeto anterior" }),
    ).toBeDisabled();
    expect(
      after.getByRole("button", { name: "Próximo projeto" }),
    ).toHaveFocus();
  });

  it("announces which project is on screen", () => {
    const dialog = setup("nutriscan");
    expect(dialog.querySelector("[aria-live='polite']")).toHaveTextContent(
      "NutriScan, projeto 3 de 6",
    );
  });

  it("ignores arrow keys combined with modifiers, which belong to the browser", () => {
    const dialog = setup("lavacao-047");
    fireEvent.keyDown(dialog, { key: "ArrowRight", altKey: true });
    expect(screen.getByRole("dialog")).toHaveAccessibleName("Lavação 047");
  });
});