Basic etterna pack browser and downloader

bash_scripts/etterna_pack_dl.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/bash
+min_diff=${1:-0}
+max_diff=${2:-99}
+max_size_bytes=${3:-$((512 * 1024 * 1024))}
+ETTERNA_PATH=~/Desktop/Etterna
+
+if [ $(cat /sys/class/net/wlo1/carrier) -eq 0 ] && [ $(cat /sys/class/net/enp*/carrier) -eq 0 ]; then
+	echo 'No internet'
+	exit 1
+fi
+
+PACKS=$(curl --silent 'https://api.etternaonline.com/v2/packs')
+DL_LINK=$(echo $PACKS | jq ".data | .[] | select(.attributes.average >= $min_diff and .attributes.average <= $max_diff and .attributes.size <= $max_size_bytes) | .attributes.name + \";\" + .attributes.download" | fzf -d ";" --with-nth 1 --bind 'enter:become(echo {2})')
+if [ $? -ne 0 ]; then
+	echo "Abort"
+	exit 1
+fi
+cd $ETTERNA_PATH/Songs
+wget --no-check-certificate "$DL_LINK" && {
+	unzip *.zip && rm *.zip
+}