open iTerm 2 and exec script on Alfred

alfred-terminal.applescript

on alfred_script(q)
  tell application "System Events" to set isRunning to exists (processes where name is "iTerm2")
  if isRunning then
    tell application "iTerm2" to set hasWindow to exists (windows)
      if hasWindow then
        tell application "iTerm2"
          tell current window to create tab with default profile
          tell current session of current window to write text q
        end tell
      else
        tell application "iTerm2" to create window with default profile
          tell application "iTerm2"
            tell current session of current window to write text q
          end tell
      end if
  else
    launch application "iTerm"
  end if
end alfred_script

official version in https://gist.githubusercontent.com/gnachman/4cbe6743baa7fe07536b/raw/61fceba4a0b2624850ac1b4a20ac8ca48e07f7d2/gistfile1.txt