雨が降るまでの時間をターミナルに出す

.zshrc

export NEXT_RAIN_TIME
export NEXT_RAIN_TIME_LAST_UPDATE=0

update_weather_countdown() {
  NEXT_RAIN_TIME=$(curl -s 'https://map.yahooapis.jp/weather/V1/place?coordinates=139.7649361,35.6812405&appid=$(Client ID)&output=json&interval=5' | jq -r -c '.Feature[0].Property.WeatherList.Weather | map(select(.["Rainfall"] > 0)) | .[0].Date')
  NEXT_RAIN_TIME_LAST_UPDATE=$(date '+%s')
}
PERIOD=60
add-zsh-hook periodic update_weather_countdown

show_weather_countdown() {
  if [[ $NEXT_RAIN_TIME =~ "^([0-9])+$" ]]; then
    NOW_TIME=$(date "+%s")
    NEXT_RAIN_TIME_UNIX_TIME=$(date -j -f "%Y%m%d%H%M%S" "${NEXT_RAIN_TIME}00" "+%s")
    COUNT_DOWN=$(expr ${NEXT_RAIN_TIME_UNIX_TIME} - ${NOW_TIME})
    if [ ${COUNT_DOWN} -lt 0 ]; then
      echo '雨'
    else
      echo '雨まであと'${COUNT_DOWN}"s"
    fi
  else
    if [[ $NEXT_RAIN_TIME = 'null' ]]; then
      echo '晴'
    else
      echo '取得エラー'
    fi
  fi
}


＃RPROMPT=$'$(show_weather_countdown)'