cc-haha/desktop/src/components/chat/clipboard.ts

export async function copyTextToClipboard(text: string): Promise<boolean> {
  try {
    if (navigator.clipboard?.writeText) {
      await navigator.clipboard.writeText(text)
      return true
    }
  } catch {
    // Fall through to legacy copy path.
  }

  try {
    const textarea = document.createElement('textarea')
    textarea.value = text
    textarea.setAttribute('readonly', 'true')
    textarea.style.position = 'fixed'
    textarea.style.opacity = '0'
    document.body.appendChild(textarea)
    textarea.select()
    const copied = document.execCommand('copy')
    document.body.removeChild(textarea)
    return copied
  } catch {
    return false
  }
}