// @vitest-environment jsdom

import { render, screen, waitFor } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { describe, expect, it } from "vitest";

import { createAnonymousSessionAdapter } from "../../src/adapters/auth/external-session-adapter.ts";
import { ApplicationProvider } from "../../src/presentation/providers/application-provider.tsx";
import { AppRouter } from "../../src/presentation/routes/app-router.tsx";
import { createTestApplication } from "../helpers/create-test-application.ts";

function renderRouter() {
  return render(
    <ApplicationProvider
      application={createTestApplication({
        session: createAnonymousSessionAdapter(),
      })}
    >
      <AppRouter />
    </ApplicationProvider>,
  );
}

describe("generic application router", () => {
  it("reaches the platform overview from the home starter actions", async () => {
    const user = userEvent.setup();
    window.history.pushState({}, "", "/");
    renderRouter();

    // The starter action lives inside the lazily loaded home chunk, so this is
    // the first wait in the file that has to outlast a chunk load rather than
    // an already-mounted shell element.
    await user.click(
      await screen.findByRole(
        "link",
        { name: "플랫폼 구성 보기" },
        { timeout: 5000 },
      ),
    );

    await waitFor(() =>
      expect(
        screen.getByRole("heading", { name: "플랫폼 구성", level: 1 }),
      ).toHaveFocus(),
    );
  });

  it("renders the app shell and not-found route without a feature input", async () => {
    window.history.pushState({}, "", "/missing");
    renderRouter();

    expect(
      await screen.findByRole("heading", {
        name: "페이지를 찾을 수 없습니다.",
      }),
    ).toBeVisible();
    expect(screen.getByRole("navigation", { name: "주요 탐색" })).toBeVisible();
    expect(screen.getByRole("main")).toBeVisible();
  });

  it("navigates between registry-backed platform routes", async () => {
    const user = userEvent.setup();
    window.history.pushState({}, "", "/");
    renderRouter();

    await user.click(
      await screen.findByRole("link", { name: "UI 구성요소" }),
    );

    expect(
      await screen.findByRole("heading", { name: "UI 구성요소", level: 1 }),
    ).toBeVisible();
    expect(window.location.pathname).toBe("/examples/ui");
    expect(document.title).toBe("UI 구성요소 · Frontend Skeleton");
    await waitFor(() =>
      expect(
        screen.getByRole("heading", { name: "UI 구성요소", level: 1 }),
      ).toHaveFocus(),
    );
  });

  it("focuses the route heading again when the lazy chunk is already cached", async () => {
    // §9.7. The first visit resolves the route module asynchronously, so the
    // router lifecycle and the page header commit separately. A later visit
    // renders the cached module in the same commit, which is the ordering that
    // must still hand focus to the heading rather than leaving it on main.
    const user = userEvent.setup();
    window.history.pushState({}, "", "/");
    renderRouter();

    for (const label of ["UI 구성요소", "화면 상태", "UI 구성요소"]) {
      await user.click(await screen.findByRole("link", { name: label }));
      await waitFor(() =>
        expect(
          screen.getByRole("heading", { name: label, level: 1 }),
        ).toHaveFocus(),
      );
    }
  });
});