#!/bin/env sh

ICON_PATH="$HOME/.local/share/icons/hicolor/512x512/apps"

ICON_MAP=(
  0 6 ${ICON_PATH}/time_moon.png
  6 10 ${ICON_PATH}/time_moon_to_sun.png
  10 18 ${ICON_PATH}/time_sun.png
  18 22 ${ICON_PATH}/time_sun_to_moon.png
  22 24 ${ICON_PATH}/time_moon.png
)

HOUR=$(date +"%H")

while [[ $# -gt 0 ]]; do
  case $1 in
    --time)
      HOUR="$2"
      shift # past argument
      shift # past value
      ;;
  esac
done

icon="amarok_clock"
length=${#ICON_MAP[@]}
for (( i=0; i<length; i += 3 ));
do
  if [[ $HOUR -lt ${ICON_MAP[$i]} ]] then
    continue
  fi

  if [[ $HOUR -ge "${ICON_MAP[$i+1]}" ]] then
    continue
  fi

  icon="${ICON_MAP[$i+2]}"
  break
done

notify-send --icon "${icon}" \
  --app-name="Current Hour" \
  "Ding Dong..." \
  "It's currently: ${HOUR}:00"