optional cryptocurrencies module

.local/bin/statusbar/crypto

@@ -0,0 +1,54 @@
+#!/bin/sh
+
+# Shows the price for desired cryptocurrencies. Module updates automatically
+# every calendar day, but can also be updated with a middle click.
+
+# Currencies should be ;-separated:
+# human-readable name;urlname;icon
+coins="Bitcoin;btc;💰
+Etherium;eth;🍸
+Basic Attention Token;bat;🦁
+LBC;lbc;📚
+"
+
+# Directory where currency info is stored.
+dir="${XDG_DATA_HOME:-$HOME/.local/share}/crypto-prices"
+
+getprices() { # The command to get the desired prices
+	printf "🔃 "; printprices
+	{ rm -rf "${dir:?}/*"
+	echo "$coins" | while IFS=';' read -r human web icon; do
+		val="$(curl -s "rate.sx/1$web")" &&
+		echo "$icon;$val;$human" > "$dir/$web"
+	done; [ -d "$dir" ] && touch "$dir"
+	pkill -RTMIN+13 "${STATUSBAR:-dwmblocks}" ;} &
+	exit
+	}
+
+printprices() { # Print/format all prices
+	for x in "$dir"/*; do
+		[ -f "$x" ] || break
+		info="$(cut -d';' -f-2 --output-delimiter=' ' "$x")"
+		printf "%s $%0.2f " $info
+	done | sed 's/ $//'
+	}
+
+mkdir -p "$dir"
+
+# If currencies haven't been updated today, try to update them.
+[ "$(stat -c %x "$HOME/.local/share/crypto-prices" | cut -d' ' -f1)" != "$(date '+%Y-%m-%d')" ] &&
+	{ ping -q -c 1 1.1.1.1 >/dev/null 2>&1 && getprices || exit ;}
+
+case $BLOCK_BUTTON in
+	1) uptime="$(date -d "$(stat -c %x "$dir")" '+%D at %T' | sed "s|$(date '+%D')|Today|")"
+		notify-send "Exact prices in USD" "$(awk -F';' '{print $1, $3 ":\n\t$" $2}' "$dir"/*)
+<b>Last updated:</b>
+	$uptime" ;;
+	2) getprices ;;
+	3) notify-send "💸 Crypto-currency module" "\- Left click for exact prices.
+- Middle click to update.
+- Shows 🔃 if updating prices.
+- Manually add/remove currencies to list in the script." ;;
+esac
+
+printprices