moonphase

#!/bin/sh
# moonphase
originmoon=$(date +%s -d "2021-04-12 02:30 GMT")
now=$(date +%s)
lunarday=29.5305877076
modulo=$(genius --exec="$lunarday * (24 * 60 * 60)")
seconds=$(genius --exec="$now - $originmoon")
current=$(genius --exec="$seconds mod IntegerPart($modulo)")
fraction=$(genius --exec="$current / $modulo")
phase=$(genius --exec="round($fraction * $lunarday)")
lunation=$(genius --exec="round(100 * $fraction)")
case $phase in
1|29)
icon="\uF095";;
2)
icon="\uF096";;
3)
icon="\uF097";;
4)
icon="\uF098";;
5)
icon="\uF099";;
6)
icon="\uF09A";;
7)
icon="\uF09B";;
8)
icon="\uF09C";;
9)
icon="\uF09D";;
10)
icon="\uF09E";;
11)
icon="\uF09F";;
12)
icon="\uF0A0";;
13)
icon="\uF0A1";;
14)
icon="\uF0A2";;
15)
icon="\uF0A3";;
16)
icon="\uF0A4";;
17)
icon="\uF0A5";;
18)
icon="\uF0A6";;
19)
icon="\uF0A7";;
20)
icon="\uF0A8";;
21)
icon="\uF0A9";;
22)
icon="\uF0AA";;
23)
icon="\uF0AB";;
24)
icon="\uF0AC";;
25)
icon="\uF0AD";;
26)
icon="\uF0AE";;
27)
icon="\uF0A9";;
28)
icon="\uF0B0";;
esac


  if [ $lunation -le 2 ]; then phase_text="New Moon"
  elif [ $lunation -lt 25 ];  then phase_text="Waxing Crescent"
  elif [ $lunation -le 26 ];  then phase_text="First Quarter"
  elif [ $lunation -lt 49 ];  then phase_text="Waxing Gibbous"
  elif [ $lunation -le 51 ];  then phase_text="Full Moon"
  elif [ $lunation -lt 75 ]; then phase_text="Waning Gibbous"
  elif [ $lunation -le 76 ]; then phase_text="Last Quarter"
  elif [ $lunation -lt 100 ]; then phase_text="Waning Crescent"
  elif [ $lunation -eq  100 ]; then phase_text="New Moon"

  else
    phase_text="New Moon"  # new
  fi
case $1 in
-i|-icon)
echo -e $icon;;
-t|-text)
echo $phase_text;;
-l|-lunation)
echo "$lunation%";;
*)
 echo -e "$phase_text $icon  $phase $lunation%";;
esac