weather updates

.local/bin/statusbar/weather

@@ -1,11 +1,22 @@
 #!/bin/sh
 
-getforecast() { ping -q -c 1 1.1.1.1 >/dev/null || exit 1
+# Displays todays precipication chance (☔) and daily low (❄) and high (🌞).
+# Usually intended for the statusbar.
+
+# If we have internet, get a weather report from wttr.in and store it locally.
+# You could set up a shell alias to view the full file in a pager in the
+# terminal if desired. This function will only be run once a day when needed.
+getforecast() { ping -q -c 1 1.1.1.1 >/dev/null &&
 curl -sf "wttr.in/$LOCATION" > "$HOME/.local/share/weatherreport" || exit 1 ;}
 
-showweather() { printf "%s" "$(sed '16q;d' "$HOME/.local/share/weatherreport" | grep -wo "[0-9]*%" | sort -n | sed -e '$!d' | sed -e "s/^/☔ /g" | tr -d '\n')"
+# Some very particular and terse stream manipulation. We get the maximum
+# precipication chance and the daily high and low from the downloaded file and
+# display them with coresponding emojis.
+showweather() { printf "%s" "$(sed '16q;d' "$HOME/.local/share/weatherreport" |
+	grep -wo "[0-9]*%" | sort -rn | sed "s/^/☔ /g;1q" | tr -d '\n')"
 sed '13q;d' "$HOME/.local/share/weatherreport" | grep -o "m\\(-\\)*[0-9]\\+" | sort -n -t 'm' -k 2n | sed -e 1b -e '$!d' | tr '\n|m' ' ' | awk '{print " ❄️",$1 "°","🌞",$2 "°"}' ;}
 
+# The BLOCK_BUTTON bloat for clicking in i3.
 case $BLOCK_BUTTON in
     1) $TERMINAL -e less -Srf "$HOME/.local/share/weatherreport" ;;
     2) getforecast && showweather ;;
@@ -16,7 +27,9 @@ case $BLOCK_BUTTON in
 🌞: Daily high" ;;
 esac
 
-if [ "$(stat -c %y "$HOME/.local/share/weatherreport" 2>/dev/null | awk '{print $1}')" != "$(date '+%Y-%m-%d')" ]
-	then getforecast && showweather
-	else showweather
-fi
+# The test if our forcecast is updated to the day. If it isn't download a new
+# weather report from wttr.in with the above function.
+[ "$(stat -c %y "$HOME/.local/share/weatherreport" 2>/dev/null | cut -d' ' -f1)" = "$(date '+%Y-%m-%d')" ] ||
+	getforecast
+
+showweather