#!/bin/sh

# NOTE: This script takes its dwmblocks update signal as an argument so that it can refresh itself (defaults to 5)
# Options can be found at https://wttr.in/:help

reset="\033[0m"
big="\033[11m"
verybig="\033[12m"
red="\033[31m"
blue="\033[34m"

weatherfile="$XDG_CACHE_HOME/weatherreport"
emojifile="$XDG_CACHE_HOME/weatheremoji"
url="wttr.in/$LOCATION"
weatheropts="?FA"
emojiopts="?FA&format=%c"

getforecast() {
	curl -sf --retry 5 "$url$weatheropts" >"$weatherfile" || exit 1
	curl -sf "$url$emojiopts" --retry 5 | sed 's/☀️//;s/☁️//;s/⛅️//;s/⛈//;s/✨//;s/❄️//;s/🌦//;s/🌧//;s/🌨//;s/🌩//;s/🌫//;' | cut -d ' ' -f 1 >"$emojifile" || exit 1
}
fresh() {
	[ -s "$weatherfile" ] && [ "$(stat -c %y "$weatherfile" 2>/dev/null | cut -d' ' -f1)" = "$(date '+%Y-%m-%d')" ]
}
readfile() {
	weather="$(cat "$weatherfile")"
	precipitation="$(echo "$weather" | sed '16q;d' | grep -wo "[0-9]*%" | sort -rn | head -1q)"
	highlow="$(echo "$weather" | sed '13q;d' | grep -o "m\\([-+]\\)*[0-9]\\+" | sed 's/[+m]//g' | sort -g | sed -e 1b -e '$!d')"
	emoji="$(cat "$emojifile")"
}
output() {
	readfile
	printf "%b" "$verybig$emoji$reset $precipitation $big$blue$reset $(echo $highlow | cut -d" " -f1)° $big$red$reset $(echo $highlow | cut -d" " -f2)°\n"
}

if fresh; then
	output
else
	getforecast && pkill -RTMIN+${1:-5} dwmblocks &
	printf "%b" "$big$reset Getting Weather\n"
fi