Cli-Proxy-API-Management-Center/src/utils/clipboard.ts

export async function copyToClipboard(text: string): Promise<boolean> {
  try {
    if (typeof navigator !== 'undefined' && navigator.clipboard?.writeText) {
      await navigator.clipboard.writeText(text);
      return true;
    }
  } catch {
    // fallback below
  }

  try {
    if (typeof document === 'undefined') return false;
    if (!document.body) return false;

    const activeElement = document.activeElement as HTMLElement | null;

    const textarea = document.createElement('textarea');
    textarea.value = text;
    textarea.setAttribute('readonly', '');
    textarea.style.position = 'fixed';
    textarea.style.opacity = '0';
    textarea.style.pointerEvents = 'none';
    textarea.style.left = '-9999px';
    textarea.style.top = '0';
    textarea.style.width = '1px';
    textarea.style.height = '1px';
    textarea.style.padding = '0';
    textarea.style.border = '0';

    document.body.appendChild(textarea);
    textarea.focus();
    textarea.select();
    textarea.setSelectionRange(0, textarea.value.length);
    const copied = document.execCommand('copy');
    document.body.removeChild(textarea);

    if (activeElement?.focus) {
      try {
        activeElement.focus();
      } catch {
        // ignore
      }
    }

    return copied;
  } catch {
    return false;
  }
}