import { expect, expectInsetFocusIndicator, test } from "../helpers/serve-dist";

const navHrefs = [
  "#start",
  "#profile",
  "#experience",
  "#infrastructure",
  "#selected-builds",
  "#additional-work",
  "#toolkit",
  "#contact",
] as const;

const assertVisibleUnobscuredFocus = async (
  page: import("@playwright/test").Page,
): Promise<void> => {
  await expect
    .poll(() =>
      page.evaluate(() => {
        const active = document.activeElement;
        if (!(active instanceof HTMLElement)) return false;
        const rect = active.getBoundingClientRect();
        const left = Math.max(0, rect.left);
        const right = Math.min(window.innerWidth, rect.right);
        const top = Math.max(0, rect.top);
        const bottom = Math.min(window.innerHeight, rect.bottom);
        if (right <= left || bottom <= top) return false;
        const x = left + (right - left) / 2;
        const y = top + (bottom - top) / 2;
        const topElement = document.elementFromPoint(x, y);
        const style = getComputedStyle(active);
        return (
          topElement !== null &&
          (active === topElement ||
            active.contains(topElement) ||
            topElement.contains(active)) &&
          style.outlineStyle !== "none" &&
          Number.parseFloat(style.outlineWidth) >= 2
        );
      }),
    )
    .toBe(true);
};

test("tabs from the skip link through navigation and every contact action", async ({
  page,
  distUrl,
}, testInfo) => {
  test.skip(
    testInfo.project.name === "mobile-chromium",
    "The compact disclosure path is covered by the adaptive keyboard traversal suite.",
  );
  await page.goto(distUrl, { waitUntil: "domcontentloaded" });

  const expectedTargets = [
    { selector: ".skip-link", href: "#portfolio-content" },
    ...navHrefs.map((href) => ({ selector: `nav a[href="${href}"]`, href })),
    { selector: '.hero-journey__action--primary', href: 'mailto:luca.pislaru@gmail.com' },
    { selector: '.hero-journey__actions a[href="#selected-builds"]', href: "#selected-builds" },
    {
      selector: 'a[href="https://github.com/LucaPisl/footy-tracker"]',
      href: "https://github.com/LucaPisl/footy-tracker",
    },
    {
      selector:
        'a[href="https://github.com/LucaPisl/opinion-dynamics-simulation"]',
      href: "https://github.com/LucaPisl/opinion-dynamics-simulation",
    },
    {
      selector:
        'a[href="https://github.com/LucaPisl/CurrencyConverterAvalonia"]',
      href: "https://github.com/LucaPisl/CurrencyConverterAvalonia",
    },
    {
      selector: 'a[href="https://github.com/LucaPisl/LinuxModdingGuide"]',
      href: "https://github.com/LucaPisl/LinuxModdingGuide",
    },
    {
      selector: '#contact a[href^="mailto:"]',
      href: "mailto:luca.pislaru@gmail.com",
    },
    {
      selector: '#contact a[href="https://github.com/LucaPisl"]',
      href: "https://github.com/LucaPisl",
    },
    {
      selector: '#contact a[href="https://gitlab.com/luca_pisl"]',
      href: "https://gitlab.com/luca_pisl",
    },
    {
      selector: '#contact a[href="https://linkedin.com/in/luca-pisl"]',
      href: "https://linkedin.com/in/luca-pisl",
    },
  ];

  for (const target of expectedTargets) {
    await page.keyboard.press("Tab");
    const locator = page.locator(target.selector);
    await expect(locator).toBeFocused();
    await expect(locator).toHaveAttribute("href", target.href);
    await assertVisibleUnobscuredFocus(page);
  }
});

test("activating the skip link focuses the visible unobscured portfolio content", async ({
  page,
  distUrl,
}) => {
  await page.goto(distUrl, { waitUntil: "domcontentloaded" });
  await page.keyboard.press("Tab");
  await expect(page.locator(".skip-link")).toBeFocused();

  await page.keyboard.press("Enter");

  await expect(page).toHaveURL(`${distUrl}/#portfolio-content`);
  await expect(page.locator("#portfolio-content")).toBeFocused();
  await expect(page.locator("#portfolio-content")).toHaveAttribute(
    "tabindex",
    "-1",
  );
  await expectInsetFocusIndicator(page, "#portfolio-content");
});

test("explicit section activation scrolls to and focuses its heading", async ({
  page,
  distUrl,
}, testInfo) => {
  test.skip(
    testInfo.project.name === "mobile-chromium",
    "The full keyboard path already covers the mobile project.",
  );
  await page.goto(distUrl, { waitUntil: "domcontentloaded" });

  for (let index = 0; index < 5; index += 1) await page.keyboard.press("Tab");
  await expect(page.locator('nav a[href="#infrastructure"]')).toBeFocused();
  await page.keyboard.press("Enter");

  await expect(page).toHaveURL(`${distUrl}/#infrastructure`);
  await expect(page.locator("#infrastructure")).toBeInViewport();
  await expect(page.locator("#infrastructure-heading")).toHaveAttribute(
    "tabindex",
    "-1",
  );
  await expect(page.locator("#infrastructure-heading")).toBeFocused();
  await assertVisibleUnobscuredFocus(page);
});

test("manual wheel and PageDown scrolling never move focus", async ({
  page,
  distUrl,
}, testInfo) => {
  test.skip(
    testInfo.project.name === "mobile-chromium",
    "The focus invariant is engine-level rather than viewport-specific.",
  );
  await page.goto(distUrl, { waitUntil: "domcontentloaded" });
  await page.keyboard.press("Tab");
  await page.keyboard.press("Tab");
  const startLink = page.locator('nav a[href="#start"]');
  await expect(startLink).toBeFocused();

  await page.mouse.wheel(0, 900);
  await expect(startLink).toBeFocused();
  await page.keyboard.press("PageDown");
  await expect(startLink).toBeFocused();
});

test("direct fragments do not steal focus while reduced-motion navigation remains accessible", async ({
  page,
  distUrl,
}, testInfo) => {
  test.skip(
    testInfo.project.name === "mobile-chromium",
    "The full keyboard path already covers the mobile project.",
  );
  await page.emulateMedia({ reducedMotion: "reduce" });
  await page.goto(`${distUrl}/#toolkit`, { waitUntil: "domcontentloaded" });
  await expect(page.locator("#toolkit-heading")).not.toBeFocused();

  await page.locator('nav a[href="#contact"]').click();
  await expect(page).toHaveURL(`${distUrl}/#contact`);
  await expect(page.locator("#contact-heading")).toBeFocused();
  await expect(page.locator("#contact")).toBeInViewport();
});