freezmo/lib/clipboard.ts

"use client";

/**
 * Copy text to the clipboard.
 *
 * `navigator.clipboard` only exists in a secure context, and Freezmo is often
 * used over plain http on a LAN, so fall back to the classic hidden-textarea
 * trick. Returns false when neither path works (the caller can then tell the
 * user to copy manually).
 */
export async function copyText(text: string): Promise<boolean> {
  try {
    if (typeof navigator !== "undefined" && navigator.clipboard && window.isSecureContext) {
      await navigator.clipboard.writeText(text);
      return true;
    }
  } catch {
    /* fall through to the legacy path */
  }

  try {
    const area = document.createElement("textarea");
    area.value = text;
    area.setAttribute("readonly", "");
    area.style.position = "fixed";
    area.style.top = "0";
    area.style.opacity = "0";
    document.body.appendChild(area);
    area.focus();
    area.select();
    const ok = document.execCommand("copy");
    area.remove();
    return ok;
  } catch {
    return false;
  }
}