1 files changed, 65 insertions, 0 deletions
diff --git a/.local/bin/statusbar/sb-forecast b/.local/bin/statusbar/sb-forecast
new file mode 100755
index 0000000..eb07dfe
--- /dev/null
+++ b/.local/bin/statusbar/sb-forecast
@@ -0,0 +1,65 @@
+#!/bin/sh
+
+# Displays today's precipication chance (☔), and daily low (🥶) and high (🌞).
+# Usually intended for the statusbar.
+
+url="${WTTRURL:-wttr.in}"
+weatherreport="${XDG_CACHE_HOME:-$HOME/.cache}/weatherreport"
+
+# Get a weather report from 'wttr.in' and save it locally.
+getforecast() { { rg -q -m1 '^up$' /sys/class/net/w*/operstate || rg -q -m1 '^up$' /sys/class/net/e*/operstate; } &&
+	curl -sf "$url/$LOCATION" --output "$weatherreport" && touch "$weatherreport"
+}
+
+# Forecast should be updated only once a day.
+checkforecast() {
+	[ "$(stat -c %y "$weatherreport" 2>/dev/null |
+		cut -d' ' -f1)" = "$(date '+%Y-%m-%d')" ]
+}
+
+getprecipchance() {
+	echo "$weatherdata" | sed '16q;d' |    # Extract line 16 from file
+		rg -wo "[0-9]*%" |           # Find a sequence of digits followed by '%'
+		sort -rn |                     # Sort in descending order
+		head -1q                       # Extract first line
+}
+
+getdailyhighlow() {
+	echo "$weatherdata" | sed '13q;d' |      # Extract line 13 from file
+		rg -o "m[-+]?[0-9]+" | # Find temperatures in the format "m<signed number>"
+		sed 's/[+m]//g' |                # Remove '+' and 'm'
+		sort -g |                        # Sort in ascending order
+		sed -e 1b -e '$!d'               # Extract the first and last lines
+}
+
+readfile() { weatherdata="$(bat "$weatherreport")" ;}
+
+showweather() {
+	readfile
+	# shellcheck disable=SC2046,SC2183
+	printf "☔%s ❄️%s° 🌞%s°\n" "$(getprecipchance)" $(getdailyhighlow)
+}
+
+case $BLOCK_BUTTON in
+	1) setsid -f "$TERMINAL" -e less -Sf "$weatherreport" >/dev/null 2>&1 ;;
+	2) getforecast && showweather ;;
+	3) notify-send "🌈 Weather module" "\- Left click for full forecast.
+- Middle click to update forecast.
+☔: Chance of rain/snow
+❄️: Daily low
+🌞: Daily high" ;;
+	8) setsid -f "$TERMINAL" -e "$EDITOR" "$0" >/dev/null 2>&1 ;;
+esac
+
+# shellcheck disable=SC2015
+checkforecast && showweather ||
+	( flock -n 9 &&
+		( tries=0; while [ $tries -ne 100 ]; do
+			getforecast && break ||
+				{ tries=$((tries+1)); sleep .1; }
+		done
+		! checkforecast &&
+			until getforecast; do sleep 60; done
+		pkill -RTMIN+5 "${STATUSBAR:-waybar}"
+		) &
+	echo ) 9>"${XDG_RUNTIME_DIR}/sb-forecast.lock"