import { afterEach, beforeEach, describe, expect, it } from "vitest";
import { mount, type VueWrapper } from "@vue/test-utils";
import Topbar from "~/layouts/default/Topbar.vue";

describe("Topbar.vue", () => {
  let wrapper: VueWrapper;

  beforeEach(() => {
    document.documentElement.className = "";
    document.body.innerHTML = '<div class="layout-wrapper"></div>';
    wrapper = mount(Topbar);
  });

  afterEach(() => {
    if (wrapper) {
      wrapper.unmount();
    }
  });

  describe("Component Rendering", () => {
    it("loads without crashing", () => {
      expect(wrapper.exists()).toBe(true);
      expect(wrapper.find(".layout-topbar").exists()).toBe(true);
    });

    it("renders the logo image and text", () => {
      const logo = wrapper.find(".layout-topbar-logo");
      expect(logo.exists()).toBe(true);
      expect(logo.find("img").attributes("alt")).toBe("Two stick silhouettes admiring fireworks in the sky");
      expect(logo.text()).toContain("Glowing Fiesta");
    });

    it("renders the menu toggle button", () => {
      const menuButton = wrapper.find(".layout-menu-button");
      expect(menuButton.exists()).toBe(true);
      expect(menuButton.find(".pi-bars").exists()).toBe(true);
    });

    it("renders the dark mode toggle button", () => {
      const darkModeButton = wrapper.find(".layout-topbar-action-highlight");
      expect(darkModeButton.exists()).toBe(true);
    });

    it("renders the topbar menu items", () => {
      const menuButtons = wrapper.findAll(".layout-topbar-menu button");
      expect(menuButtons).toHaveLength(3);
      expect(menuButtons[0].text()).toContain("Calendar");
      expect(menuButtons[1].text()).toContain("Messages");
      expect(menuButtons[2].text()).toContain("Profile");
    });
  });

  describe("Dark Mode Toggle", () => {
    it("starts with sun icon (light mode)", () => {
      const darkModeButton = wrapper.find(".layout-topbar-action-highlight");
      expect(darkModeButton.find(".pi-sun").exists()).toBe(true);
      expect(darkModeButton.find(".pi-moon").exists()).toBe(false);
    });

    it("toggles to moon icon when clicked", async () => {
      const darkModeButton = wrapper.find(".layout-topbar-action-highlight");
      await darkModeButton.trigger("click");

      expect(darkModeButton.find(".pi-moon").exists()).toBe(true);
      expect(darkModeButton.find(".pi-sun").exists()).toBe(false);
    });

    it("removes app-dark class when toggled off", async () => {
      expect(document.documentElement.classList.contains("app-dark")).toBe(false);
      const darkModeButton = wrapper.find(".layout-topbar-action-highlight");

      // Toggle on
      await darkModeButton.trigger("click");
      expect(document.documentElement.classList.contains("app-dark")).toBe(true);

      // Toggle off
      await darkModeButton.trigger("click");
      expect(document.documentElement.classList.contains("app-dark")).toBe(false);
    });

    it("updates isDarkTheme ref when toggled", async () => {
      const darkModeButton = wrapper.find(".layout-topbar-action-highlight");

      expect(wrapper.vm.isDarkTheme).toBe(false);

      await darkModeButton.trigger("click");
      expect(wrapper.vm.isDarkTheme).toBe(true);

      await darkModeButton.trigger("click");
      expect(wrapper.vm.isDarkTheme).toBe(false);
    });
  });

  describe("Menu Toggle", () => {
    it("toggles layout-static-inactive class on layout wrapper", async () => {
      const menuButton = wrapper.find(".layout-menu-button");
      const layoutWrapper = document.querySelector(".layout-wrapper");

      expect(layoutWrapper?.classList.contains("layout-static-inactive")).toBe(false);

      await menuButton.trigger("click");
      expect(layoutWrapper?.classList.contains("layout-static-inactive")).toBe(true);

      await menuButton.trigger("click");
      expect(layoutWrapper?.classList.contains("layout-static-inactive")).toBe(false);
    });

    it("handles missing layout wrapper gracefully", async () => {
      document.body.innerHTML = "";

      const menuButton = wrapper.find(".layout-menu-button");

      // Should not throw error
      expect(() => menuButton.trigger("click")).not.toThrow();
    });
  });

  describe("Logo Link", () => {
    it("links to home page", () => {
      const logoLink = wrapper.find(".layout-topbar-logo");
      expect(logoLink.exists()).toBe(true);
    });

    it("has correct image source", () => {
      const img = wrapper.find(".layout-topbar-logo img");
      expect(img.attributes("src")).toContain("logo.png");
    });
  });

  describe("Topbar Actions", () => {
    it("renders Calendar action button with icon", () => {
      const buttons = wrapper.findAll(".layout-topbar-menu button");
      const calendarButton = buttons[0];

      expect(calendarButton.find(".pi-calendar").exists()).toBe(true);
      expect(calendarButton.text()).toContain("Calendar");
    });

    it("renders Messages action button with icon", () => {
      const buttons = wrapper.findAll(".layout-topbar-menu button");
      const messagesButton = buttons[1];

      expect(messagesButton.find(".pi-inbox").exists()).toBe(true);
      expect(messagesButton.text()).toContain("Messages");
    });

    it("renders Profile action button with icon", () => {
      const buttons = wrapper.findAll(".layout-topbar-menu button");
      const profileButton = buttons[2];

      expect(profileButton.find(".pi-user").exists()).toBe(true);
      expect(profileButton.text()).toContain("Profile");
    });
  });
});