import { Theme } from "./theme.mjs";

document.querySelectorAll(".js-only").forEach((a) =>
  a.classList.remove("js-only")
);
document.querySelectorAll(".js-disabled-only").forEach((a) => a.remove());

const theme = new Theme();
document.querySelectorAll(".theme-toggler").forEach((a) =>
  a.addEventListener("click", () => theme.cycle())
);

const initAlign = () => {
  const cur = localStorage.getItem("align");
  const prev = cur == "center" ? "left" : "center";
  document.body.classList.add("align-" + cur);
  document.body.classList.remove("align-" + prev);
};

if (localStorage.getItem("align") === null) {
  localStorage.setItem("align", "center");
}

initAlign();

const toggleAlign = (ev) => {
  localStorage.setItem(
    "align",
    localStorage.getItem("align") == "center" ? "left" : "center",
  );
  initAlign();
  if (!!ev.target) ev.preventDefault();
  return false;
};

document.querySelectorAll(".align-toggler").forEach((a) =>
  a.addEventListener("click", toggleAlign)
);

window.addEventListener("load", (_ev) => {
  const selector = [1, 2, 3, 4, 5, 6].map((n) => `h${n}[id]`).join(",");
  document.querySelectorAll(selector).forEach((el) => {
    const anchorLink = document.createElement("a");
    anchorLink.classList.add("anchor-link");
    anchorLink.textContent = "§";
    anchorLink.href = `#${el.id}`;
    el.appendChild(anchorLink);
  });
});

function initCodeCopyButtons() {
  const codeBlocks = document.querySelectorAll("pre.chroma");
  codeBlocks.forEach((block) => {
    const code = block.querySelectorAll("code")[0];
    const buttonContainer = document.createElement("p");
    buttonContainer.classList.add("copy-code-button-container");
    const button = document.createElement("button");
    buttonContainer.appendChild(button);
    button.classList.add("copy-code-button");
    block.parentNode.parentNode.insertBefore(buttonContainer, block.parentNode);
    button.textContent = "Copy";
    button.addEventListener("click", (_ev) => {
      button.disabled = true;
      navigator.clipboard.writeText(code.textContent).catch(() => {
        const lastText = button.textContent;
        button.textContent = "Error Copying";
        setTimeout(() => {
          button.disabled = false;
          button.textContent = lastText;
        }, 500);
      }).then(() => {
        const lastText = button.textContent;
        button.textContent = "Copied to clipbooard!";
        setTimeout(() => {
          button.disabled = false;
          button.textContent = lastText;
        }, 3000);
      });
    });
  });
}

window.addEventListener("load", (_ev) => {
  initCodeCopyButtons();
});