fix

cmd/telesrv-admin/web/src/clipboard.ts

@@ -0,0 +1,28 @@
+// navigator.clipboard only exists in a secure context (HTTPS, or localhost).
+// This admin panel is frequently reached over a plain http:// LAN address
+// (e.g. a self-hosted server's own IP), where navigator.clipboard is simply
+// undefined -- calling .writeText on it throws "Cannot read properties of
+// undefined". Fall back to the old execCommand('copy') path via a hidden,
+// off-screen textarea, which still works in that case.
+export async function copyToClipboard(text: string): Promise<void> {
+  if (navigator.clipboard?.writeText) {
+    await navigator.clipboard.writeText(text);
+    return;
+  }
+  const textarea = document.createElement("textarea");
+  textarea.value = text;
+  textarea.style.position = "fixed";
+  textarea.style.top = "-1000px";
+  textarea.style.left = "-1000px";
+  document.body.appendChild(textarea);
+  textarea.focus();
+  textarea.select();
+  try {
+    const ok = document.execCommand("copy");
+    if (!ok) {
+      throw new Error("Copy command was not successful");
+    }
+  } finally {
+    document.body.removeChild(textarea);
+  }
+}