check-apt-update

#!/bin/bash

# Beautify my 'aptitude update && aptitude -s -y safe-upgrade' output
# Optimized for aptitude 0.8.13

RED='\e[0;31m'
GREEN='\e[0;32m'
YELLOW='\e[0;33m'
RESET='\e[0m'

checkBinarys() {
	for i in "$@"; do
		hash "$i" 2>/dev/null || {
			echo "Binary missing: $i" >&2
			echo >&2
			exit 1
		}
	done
}
checkBinarys "dirname" "aptitude" "apt"

cecho() {
	if [ -t 1 ]; then
		# Only use colors when file descriptor FD is open and refers to a terminal.
		echo -n -e "$2$1"
	else
		if [ "$2" == "$RESET" ] ; then
			echo -ne "$1"
		else
			echo -n "$1"
		fi
	fi
}

source animation.sh

printf "%-38s" "Updating package list..."
_animationStart
if aptitude update > /dev/null 2>&1; then
	_animationStop
	echo -n "[ "
	cecho "Done" "$GREEN"
	cecho " ]\n" "$RESET"
else
	_animationStop
	echo -n "[ "
	cecho "FAILED" "$RED"
	cecho " ]\n" "$RESET"
	exit 1
fi

UPDATES=1
UPGRADE=$(aptitude -q -s -y safe-upgrade 2>&1)
x=0
while read -r LINE; do
	if [ ! "$LINE" == "" ]; then
		if [[ $x -gt 5 ]]; then
			if [[ "$LINE" =~ '0 packages upgraded' ]]; then
				cecho "" "$RESET"
			else
				[[ "$LINE" =~ 'packages upgraded,' ]] && cecho "\n" "$RESET"
			fi
			echo "$LINE"
			[ $x -eq 6 ] && ((x++)) && cecho "" "$YELLOW" && echo
		else
			LINE=$(echo "$LINE" | tr -d '\n')
			((x++))
			printf "%-38s" "$LINE"
			echo -n "[ "
	                cecho "Done" "$GREEN"
			cecho " ]\n" "$RESET"
			[ "$x" -eq 6 ] && echo
		fi
	fi
	if [ "$LINE" == "No packages will be installed, upgraded, or removed." ]; then
		UPDATES=0
	fi
done <<< "$UPGRADE" # not using "aptitude.... | while read LINE", because subshell is started and var UPDATE could not be altered

echo
if [ $UPDATES == 1 ]; then
	apt list --upgradable 2>/dev/null
	echo
fi