ZSH Countdown Timer

alias.zsh

ct5() {
  AWESOME_COUNTDOWN=$(date  --date 'now + 5 minutes' +%s)
}

ct90() {
  AWESOME_COUNTDOWN=$(date  --date 'now + 90 minutes' +%s)
}

prompt.zsh

function check_timer {
  if [[ $AWESOME_COUNTDOWN ]] && [ $AWESOME_COUNTDOWN -eq $AWESOME_COUNTDOWN ] 2>/dev/null
    then
      tnow=$(date +%s)
      if [ $AWESOME_COUNTDOWN -gt $tnow ]
        then
          tleft=$(( $AWESOME_COUNTDOWN - $tnow))
          eval "echo $(date -ud "@$tleft" +'%H:%M:%S')"
        else
          unset $AWESOME_COUNTDOWN
        fi
    fi
}


RPROMPT='$(check_timer)'

TMOUT=1

TRAPALRM() {
  zle reset-prompt
}