import { render, screen } from "@testing-library/react";
import Footer from "./Footer";

describe("Footer Component - Contact Information", () => {
  it("should render contact section heading", () => {
    render(<Footer />);

    const contactHeading = screen.getByText("Contato direto");
    expect(contactHeading).toBeInTheDocument();
    expect(contactHeading.tagName).toBe("H3");
  });

  it("should render email address", () => {
    render(<Footer />);

    const emailLink = screen.getByText("evandro@dev.br");
    expect(emailLink).toBeInTheDocument();
    expect(emailLink.tagName).toBe("A");
  });

  it("should have mailto link for email", () => {
    render(<Footer />);

    const emailLink = screen.getByText("evandro@dev.br");
    expect(emailLink).toHaveAttribute("href", "mailto:evandro@dev.br");
  });

  it("should apply correct styling classes to email link", () => {
    render(<Footer />);

    const emailLink = screen.getByText("evandro@dev.br");
    const classes = emailLink.className;

    expect(classes).toContain("text-[12px]");
    expect(classes).toContain("hover:text-[var(--slash)]");
  });
});

describe("Footer Component - Social Links", () => {
  it("should render social links section heading", () => {
    render(<Footer />);

    const connectHeading = screen.getByText("Redes profissionais");
    expect(connectHeading).toBeInTheDocument();
    expect(connectHeading.tagName).toBe("H3");
  });

  it("should render GitHub social link", () => {
    render(<Footer />);

    const githubLink = screen.getByLabelText("Visit GitHub profile");
    expect(githubLink).toBeInTheDocument();
    expect(githubLink.tagName).toBe("A");
  });

  it("should render LinkedIn social link", () => {
    render(<Footer />);

    const linkedinLink = screen.getByLabelText("Visit LinkedIn profile");
    expect(linkedinLink).toBeInTheDocument();
    expect(linkedinLink.tagName).toBe("A");
  });

  it("should have correct href for GitHub link", () => {
    render(<Footer />);

    const githubLink = screen.getByLabelText("Visit GitHub profile");
    expect(githubLink).toHaveAttribute(
      "href",
      "https://github.com/evandrodevbr",
    );
  });

  it("should have correct href for LinkedIn link", () => {
    render(<Footer />);

    const linkedinLink = screen.getByLabelText("Visit LinkedIn profile");
    expect(linkedinLink).toHaveAttribute(
      "href",
      "https://linkedin.com/in/evandrodevbr",
    );
  });

  it('should open social links in new tab with target="_blank"', () => {
    render(<Footer />);

    const githubLink = screen.getByLabelText("Visit GitHub profile");
    const linkedinLink = screen.getByLabelText("Visit LinkedIn profile");

    expect(githubLink).toHaveAttribute("target", "_blank");
    expect(linkedinLink).toHaveAttribute("target", "_blank");
  });

  it('should have rel="noopener noreferrer" for security', () => {
    render(<Footer />);

    const githubLink = screen.getByLabelText("Visit GitHub profile");
    const linkedinLink = screen.getByLabelText("Visit LinkedIn profile");

    expect(githubLink).toHaveAttribute("rel", "noopener noreferrer");
    expect(linkedinLink).toHaveAttribute("rel", "noopener noreferrer");
  });

  it("should have aria-label for accessibility", () => {
    render(<Footer />);

    const githubLink = screen.getByLabelText("Visit GitHub profile");
    const linkedinLink = screen.getByLabelText("Visit LinkedIn profile");

    expect(githubLink).toHaveAttribute("aria-label", "Visit GitHub profile");
    expect(linkedinLink).toHaveAttribute(
      "aria-label",
      "Visit LinkedIn profile",
    );
  });

  it("should render SVG icons for social links", () => {
    render(<Footer />);

    const githubLink = screen.getByLabelText("Visit GitHub profile");
    const linkedinLink = screen.getByLabelText("Visit LinkedIn profile");

    const githubSvg = githubLink.querySelector("svg");
    const linkedinSvg = linkedinLink.querySelector("svg");

    expect(githubSvg).toBeInTheDocument();
    expect(linkedinSvg).toBeInTheDocument();
  });

  it('should have aria-hidden="true" on SVG icons', () => {
    render(<Footer />);

    const githubLink = screen.getByLabelText("Visit GitHub profile");
    const linkedinLink = screen.getByLabelText("Visit LinkedIn profile");

    const githubSvg = githubLink.querySelector("svg");
    const linkedinSvg = linkedinLink.querySelector("svg");

    expect(githubSvg).toHaveAttribute("aria-hidden", "true");
    expect(linkedinSvg).toHaveAttribute("aria-hidden", "true");
  });
});

describe("Footer Component - Copyright", () => {
  it("should render copyright section heading", () => {
    render(<Footer />);

    const copyrightHeading = screen.getByText("Informacoes legais");
    expect(copyrightHeading).toBeInTheDocument();
    expect(copyrightHeading.tagName).toBe("H3");
  });

  it("should display current year in copyright text", () => {
    render(<Footer />);

    const currentYear = new Date().getFullYear();
    const copyrightText = screen.getByText(
      new RegExp(`© ${currentYear} Evandro Fonseca Junior`),
    );

    expect(copyrightText).toBeInTheDocument();
  });

  it("should update copyright year dynamically", () => {
    // Test that the component uses new Date().getFullYear() dynamically
    // by verifying it shows the current year (not a hardcoded value)
    const currentYear = new Date().getFullYear();

    render(<Footer />);

    // Verify the copyright includes the current year
    const copyrightText = screen.getByText(
      new RegExp(`© ${currentYear} Evandro Fonseca Junior`),
    );
    expect(copyrightText).toBeInTheDocument();

    // Verify it's not hardcoded to a specific year like 2023 or 2024
    // by checking that the year matches the actual current year
    expect(currentYear).toBeGreaterThanOrEqual(2024);
  });

  it("should apply correct styling to copyright text", () => {
    render(<Footer />);

    const currentYear = new Date().getFullYear();
    const copyrightText = screen.getByText(
      new RegExp(`© ${currentYear} Evandro Fonseca Junior`),
    );
    const classes = copyrightText.className;

    expect(classes).toContain("text-[12px]");
    expect(classes).toContain("text-[rgba(255,255,255,0.5)]");
  });
});

describe("Footer Component - Responsive Layout", () => {
  beforeEach(() => {
    // Mock window.matchMedia for responsive tests
    Object.defineProperty(window, "matchMedia", {
      writable: true,
      value: jest.fn().mockImplementation((query) => ({
        matches: false,
        media: query,
        onchange: null,
        addListener: jest.fn(),
        removeListener: jest.fn(),
        addEventListener: jest.fn(),
        removeEventListener: jest.fn(),
        dispatchEvent: jest.fn(),
      })),
    });
  });

  it("should have responsive grid layout classes", () => {
    const { container } = render(<Footer />);

    const gridContainer = container.querySelector(".grid");
    expect(gridContainer).toBeInTheDocument();

    const classes = gridContainer?.className || "";
    expect(classes).toContain("grid-cols-1");
    expect(classes).toContain("md:grid-cols-2");
    expect(classes).toContain("lg:grid-cols-3");
  });

  it("should have responsive padding classes on container", () => {
    const { container } = render(<Footer />);

    const innerContainer = container.querySelector(".ds-section-shell");
    expect(innerContainer).toBeInTheDocument();

    // The ds-section class handles responsive padding via CSS
    const footer = container.querySelector("footer");
    const classes = footer?.className || "";
    expect(classes).toContain("ds-section");
  });

  it("should have responsive gap classes on grid", () => {
    const { container } = render(<Footer />);

    const gridContainer = container.querySelector(".grid");
    const classes = gridContainer?.className || "";

    expect(classes).toContain("gap-sp-6");
  });

  it("should have responsive column span for copyright section", () => {
    const { container } = render(<Footer />);

    // Find the copyright section by its heading
    const copyrightHeading = screen.getByText("Informacoes legais");
    const copyrightSection = copyrightHeading.closest(".ds-card");

    expect(copyrightSection).toBeInTheDocument();
    const classes = copyrightSection?.className || "";

    expect(classes).toContain("md:col-span-2");
    expect(classes).toContain("lg:col-span-1");
  });
});

describe("Footer Component - Design System Consistency", () => {
  it("should use design system kicker class for section labels", () => {
    render(<Footer />);

    const kickers = document.querySelectorAll(".ds-kicker");
    expect(kickers.length).toBeGreaterThan(0);
  });

  it("should have ds-section class on footer element", () => {
    const { container } = render(<Footer />);

    const footer = container.querySelector("footer");
    expect(footer).toBeInTheDocument();

    const classes = footer?.className || "";
    expect(classes).toContain("ds-section");
  });

  it("should have ds-section-dark class for dark background", () => {
    const { container } = render(<Footer />);

    const footer = container.querySelector("footer");
    const classes = footer?.className || "";

    expect(classes).toContain("ds-section-dark");
  });

  it("should use design system shell class for container", () => {
    const { container } = render(<Footer />);

    const shell = container.querySelector(".ds-section-shell");
    expect(shell).toBeInTheDocument();
  });
});

describe("Footer Component - Structure", () => {
  it("should render as footer semantic element", () => {
    const { container } = render(<Footer />);

    const footer = container.querySelector("footer");
    expect(footer).toBeInTheDocument();
  });

  it("should have three main sections", () => {
    render(<Footer />);

    const contactHeading = screen.getByText("Contato direto");
    const connectHeading = screen.getByText("Redes profissionais");
    const copyrightHeading = screen.getByText("Informacoes legais");

    expect(contactHeading).toBeInTheDocument();
    expect(connectHeading).toBeInTheDocument();
    expect(copyrightHeading).toBeInTheDocument();
  });

  it("should have design system shell container", () => {
    const { container } = render(<Footer />);

    const innerContainer = container.querySelector(".ds-section-shell");
    expect(innerContainer).toBeInTheDocument();
  });
});