import { describe, it, expect, beforeEach } from "vitest";
import { PettyTabs } from "../src/components/tabs/index";
import { h } from "./helpers";

describe("petty-tabs", () => {
  let el: PettyTabs;

  beforeEach(() => {
    document.body.textContent = "";
    el = document.createElement("petty-tabs") as PettyTabs;
    el.setAttribute("default-value", "one");
    const tab1 = h("petty-tab", { value: "one" }, "Tab 1");
    const tab2 = h("petty-tab", { value: "two" }, "Tab 2");
    const tablist = h("div", { role: "tablist" }, tab1, tab2);
    const panel1 = h("petty-tab-panel", { value: "one" }, "Content 1");
    const panel2 = h("petty-tab-panel", { value: "two" }, "Content 2");
    el.appendChild(tablist);
    el.appendChild(panel1);
    el.appendChild(panel2);
    document.body.appendChild(el);
  });

  it("registers the custom elements", () => {
    expect(customElements.get("petty-tabs")).toBe(PettyTabs);
  });

  it("initializes with default-value", () => {
    expect(el.value).toBe("one");
  });

  it("sets data-state and aria-selected on active tab", () => {
    const tab1 = el.querySelector("petty-tab[value='one']")!;
    const tab2 = el.querySelector("petty-tab[value='two']")!;
    expect(tab1.getAttribute("data-state")).toBe("active");
    expect(tab1.getAttribute("aria-selected")).toBe("true");
    expect(tab2.getAttribute("data-state")).toBe("inactive");
  });

  it("hides inactive panels", () => {
    const panel2 = el.querySelector("petty-tab-panel[value='two']")!;
    expect(panel2.hasAttribute("hidden")).toBe(true);
  });

  it("fires petty-change on selectTab", () => {
    let detail: { value: string } | null = null;
    el.addEventListener("petty-change", ((e: CustomEvent) => {
      detail = e.detail;
    }) as EventListener);
    el.selectTab("two");
    expect(detail).toEqual({ value: "two" });
    expect(el.value).toBe("two");
  });
});