#!/usr/bin/bash

if ! type -P fakeroot >/dev/null; then
	error 'Cannot find the fakeroot binary.'
	exit 1
fi

if [[ -z $CHECKUPDATES_DB ]]; then
	CHECKUPDATES_DB="${TMPDIR:-/tmp}/checkup-db-${USER}/"
fi

trap 'rm -f $CHECKUPDATES_DB/db.lck' INT TERM EXIT

DBPath="${DBPath:-/var/lib/pacman/}"
eval $(awk -F' *= *' '$1 ~ /DBPath/ { print $1 "=" $2 }' /etc/pacman.conf)

mkdir -p "$CHECKUPDATES_DB"
ln -s "${DBPath}/local" "$CHECKUPDATES_DB" &> /dev/null
fakeroot -- pacman -Sy --dbpath "$CHECKUPDATES_DB" --logfile /dev/null &> /dev/null
fakeroot pacman -Su -p --dbpath "$CHECKUPDATES_DB"

exit 0