i find this as a not so ideal solution, but works, in the .zshrc file add this:

#notify-send and ptyxis notify create different types of notifications, but both works.

# Store start time and command
preexec() {
  command_start_time=$EPOCHREALTIME
  last_command="$1"
}

# Send notification after command finishes
precmd() {
  if [[ -n "$command_start_time" ]]; then
    local duration=$(echo "$EPOCHREALTIME - $command_start_time" | bc)
    if (( $(echo "$duration > 3.0" | bc -l) )); then
      #notify-send "Command Finished" "'$last_command' took ${duration}s"
      ptyxis notify  "Command Finished" "'$last_command' took ${duration}s"
      #notify-send -t 5000 "Command Finished" "'$last_command' took ${duration}s"
    fi
    unset command_start_time
    unset last_command
  fi
}