"use strict";

document.documentElement.classList.add("js");

// Theme: persisted in sessionStorage, dark default.
const root = document.documentElement;
root.dataset.theme = sessionStorage.getItem("theme") || "dark";

document.querySelector("[data-theme-btn]")?.addEventListener("click", () => {
  root.dataset.theme = root.dataset.theme === "dark" ? "light" : "dark";
  sessionStorage.setItem("theme", root.dataset.theme);
});

// Footer year
document.getElementById("year").textContent = new Date().getFullYear();

// Card spotlight: track cursor into --mx/--my
for (const card of document.querySelectorAll(".card")) {
  card.addEventListener("mousemove", (e) => {
    const r = card.getBoundingClientRect();
    card.style.setProperty("--mx", `${e.clientX - r.left}px`);
    card.style.setProperty("--my", `${e.clientY - r.top}px`);
  });
}

// Staggered reveal on scroll
const reveal = new IntersectionObserver((entries) => {
  for (const en of entries) {
    if (en.isIntersecting) {
      const cards = [...en.target.parentElement.children];
      en.target.style.transitionDelay = `${cards.indexOf(en.target) * 60}ms`;
      en.target.classList.add("in");
      reveal.unobserve(en.target);
    }
  }
}, { threshold: 0.15 });
document.querySelectorAll(".card").forEach((c) => reveal.observe(c));

// Contact form -> sendmail.tdvorak.dev
const form = document.getElementById("contact-form");
const status = document.getElementById("form-status");

form?.addEventListener("submit", async (e) => {
  e.preventDefault();
  const btn = form.querySelector('button[type="submit"]');
  btn.disabled = true;
  btn.textContent = "Sending…";
  status.textContent = "";
  status.className = "form-status mono";

  try {
    const params = new URLSearchParams(Object.fromEntries(new FormData(form)));
    const res = await fetch(`https://sendmail.tdvorak.dev/send?${params}`, { method: "GET" });
    if (!res.ok) throw new Error(await res.text() || "Send failed");
    status.textContent = "Message sent. I'll get back to you soon.";
    status.classList.add("ok");
    form.reset();
  } catch (err) {
    status.textContent = "Something went wrong — try again or email me directly.";
    status.classList.add("err");
  } finally {
    btn.disabled = false;
    btn.textContent = "Send message";
  }
});