import AxeBuilder from "@axe-core/playwright";
import { expect, test } from "@playwright/test";
import type { Locator, Page } from "@playwright/test";

async function loginThroughMockMode(page: Page): Promise<void> {
  await page.goto("/login");
  await page.getByLabel("이메일").fill("admin@test.com");
  await page.getByLabel("비밀번호").fill("password");
  await page.getByRole("button", { name: "로그인" }).click();
  await expect(page).toHaveURL(/\/ai-characters$/);
}

async function zoomTo200Percent(page: Page): Promise<void> {
  await page.evaluate(() => {
    document.documentElement.style.zoom = "2";
  });
}

async function resetZoom(page: Page): Promise<void> {
  await page.evaluate(() => {
    document.documentElement.style.zoom = "";
  });
}

async function expectNoHorizontalOverflow(page: Page): Promise<void> {
  const hasHorizontalOverflow = await page.evaluate(
    () => document.documentElement.scrollWidth > document.documentElement.clientWidth,
  );

  expect(hasHorizontalOverflow).toBe(false);
}

async function expectBannerDoesNotOverlap(banner: Locator, control: Locator): Promise<void> {
  const bannerBox = await banner.boundingBox();
  const controlBox = await control.boundingBox();

  expect(bannerBox).not.toBeNull();
  expect(controlBox).not.toBeNull();

  if (bannerBox === null || controlBox === null) {
    return;
  }

  expect(bannerBox.y + bannerBox.height).toBeLessThanOrEqual(controlBox.y);
}

test("opens the mock shell without backend fallback and keeps the 320px session usable", async ({ page }) => {
  // Given
  const interceptedApiContractRequests: string[] = [];
  page.on("request", (request) => {
    const url = new URL(request.url());
    if (url.hostname !== "127.0.0.1" && url.pathname !== "/mockServiceWorker.js") {
      interceptedApiContractRequests.push(`${request.method()} ${url.pathname}${url.search}`);
    }
  });

  // When
  await loginThroughMockMode(page);

  // Then
  await expect(page.getByRole("status", { name: /Mock Preview/ })).toBeVisible();
  await expect(page.getByRole("heading", { name: "AI 캐릭터", exact: true })).toBeVisible();
  const results = await new AxeBuilder({ page }).analyze();
  const blockingViolations = results.violations.filter(
    (violation) => violation.impact === "critical" || violation.impact === "serious",
  );
  expect(blockingViolations).toEqual([]);
  expect(new Set(interceptedApiContractRequests)).toEqual(new Set([
    "POST /admin/member/login",
    "GET /api/v2/admin/ai-characters?page=0&size=20",
  ]));

  // When
  await page.getByRole("button", { name: "로그아웃" }).click();
  await expect(page).toHaveURL(/\/login$/);

  await page.setViewportSize({ width: 320, height: 640 });
  await zoomTo200Percent(page);

  const loginBanner = page.getByRole("status", { name: /Mock Preview/ });
  const email = page.getByLabel("이메일");
  await expect(loginBanner).toBeVisible();
  await expect(email).toBeVisible();
  await expect(page.getByLabel("비밀번호")).toBeVisible();
  await expect(page.getByRole("button", { name: "로그인" })).toBeVisible();
  await expectBannerDoesNotOverlap(loginBanner, email);
  await expectNoHorizontalOverflow(page);
  await resetZoom(page);

  await page.getByLabel("이메일").fill("admin@test.com");
  await page.getByLabel("비밀번호").fill("password");
  await page.getByRole("button", { name: "로그인" }).click();

  // Then
  await expect(page).toHaveURL(/\/ai-characters$/);
  await expect(page.getByRole("heading", { name: "AI 캐릭터", exact: true })).toBeVisible();
  await zoomTo200Percent(page);

  const banner = page.getByRole("status", { name: /Mock Preview/ });
  const menuButton = page.getByRole("button", { name: "모바일 메뉴 열기" });
  await expect(banner).toBeVisible();
  await expect(menuButton).toBeVisible();
  await expect(page.getByRole("button", { name: "로그아웃" })).toBeVisible();
  await expectBannerDoesNotOverlap(banner, menuButton);
  await expectNoHorizontalOverflow(page);
  await resetZoom(page);

  for (const desktopWidth of [1024, 1200]) {
    await page.setViewportSize({ width: 320, height: 640 });
    await page.getByRole("button", { name: "모바일 메뉴 열기" }).click();

    const openState = await page.evaluate(() => {
      const banner = document.querySelector("[aria-label='Mock Preview']");
      const main = document.querySelector("main[aria-label='AI 캐릭터 관리']");

      return {
        bannerInert: banner?.closest("[inert]") !== null,
        bannerHidden: banner?.closest("[aria-hidden='true']") !== null,
        mainInert: main?.closest("[inert]") !== null,
      };
    });
    expect(openState).toEqual({ bannerHidden: true, bannerInert: true, mainInert: true });

    // When
    await page.setViewportSize({ width: desktopWidth, height: 800 });

    // Then
    await expect(page.getByRole("navigation", { name: "모바일 주 메뉴" })).toBeHidden();
    await expect(page.getByRole("navigation", { name: "데스크톱 주 메뉴" })).toBeVisible();
    await expect(page.getByRole("button", { name: "로그아웃" })).toBeVisible();
    const desktopState = await page.evaluate(() => {
      const banner = document.querySelector("[aria-label='Mock Preview']");
      const main = document.querySelector("main[aria-label='AI 캐릭터 관리']");

      return {
        bannerInert: banner?.closest("[inert]") !== null,
        bannerHidden: banner?.closest("[aria-hidden='true']") !== null,
        mainInert: main?.closest("[inert]") !== null,
      };
    });
    expect(desktopState).toEqual({ bannerHidden: false, bannerInert: false, mainInert: false });
  }
});