#!/bin/sh -- # no runable script, just for vi

# we all like colorful messages
CERROR="" # red
CWARNING="" # yellow
CMSG="" # green
CINFO="" # light blue
CDEBUG="" # blue
CNORMAL="" # default system console color
CDONE="" # green
CPASS="" # green
CFAIL="" # red
CCMD="" # pink

msgdie() { echo "${CERROR}E: $1${CNORMAL}" >&2; exit 1; }
msgwarn() { echo "${CWARNING}W: $1${CNORMAL}" >&2; }
msgmsg() { echo "${CMSG}$1${CNORMAL}" >&2; }
msginfo() { echo "${CINFO}I: $1${CNORMAL}" >&2; }
msgdebug() { echo "${CDEBUG}D: $1${CNORMAL}" >&2; }
msgdone() { echo "${CDONE}DONE${CNORMAL}" >&2; }
msgnwarn() { echo -n "${CWARNING}W: $1${CNORMAL}" >&2; }
msgnmsg() { echo -n "${CMSG}$1${CNORMAL}" >&2; }
msgninfo() { echo -n "${CINFO}I: $1${CNORMAL}" >&2; }
msgndebug() { echo -n "${CDEBUG}D: $1${CNORMAL}" >&2; }
msgtest() { echo -n "${CINFO}$1 ${CCMD}$(echo "$2" | sed -e 's/^aptc/apt-c/' -e 's/^aptg/apt-g/' -e 's/^aptf/apt-f/')${CINFO} …${CNORMAL} " >&2; }
msgpass() { echo "${CPASS}PASS${CNORMAL}" >&2; }
msgskip() { echo "${CWARNING}SKIP${CNORMAL}" >&2; }
msgfail() { echo "${CFAIL}FAIL${CNORMAL}" >&2; }

# enable / disable Debugging
msginfo() { true; }
msgdebug() { true; }
msgninfo() { true; }
msgndebug() { true; }
msgdone() { if [ "$1" = "debug" -o "$1" = "info" ]; then true; else echo "${CDONE}DONE${CNORMAL}" >&2; fi }

runapt() {
	msgdebug "Executing: ${CCMD}$*${CDEBUG} "
	APT_CONFIG=aptconfig.conf LD_LIBRARY_PATH=${BUILDDIRECTORY} ${BUILDDIRECTORY}/$*
}
aptconfig() { runapt apt-config $*; }
aptcache() { runapt apt-cache $*; }
aptget() { runapt apt-get $*; }
aptftparchive() { runapt apt-ftparchive $*; }

setupenvironment() {
	local TMPWORKINGDIRECTORY=$(mktemp -d)
	local TESTDIR=$(readlink -f $(dirname $0))
	msgninfo "Preparing environment for ${CCMD}$0${CINFO} in ${TMPWORKINGDIRECTORY}… "
	BUILDDIRECTORY="${TESTDIR}/../../build/bin"
	test -x "${BUILDDIRECTORY}/apt-get" || msgdie "You need to build tree first"
	local OLDWORKINGDIRECTORY=$(pwd)
	trap "cd /; rm -rf $TMPWORKINGDIRECTORY; cd $OLDWORKINGDIRECTORY" 0 HUP INT QUIT ILL ABRT FPE SEGV PIPE TERM
	cd $TMPWORKINGDIRECTORY
	mkdir rootdir aptarchive
	cd rootdir
	mkdir -p etc/apt/apt.conf.d etc/apt/sources.list.d etc/apt/trusted.gpg.d etc/apt/preferences.d var/cache var/lib/dpkg
	mkdir -p var/cache/apt/archives/partial var/lib/apt/lists/partial
	local STATUSFILE=$(echo "$(basename $0)" | sed 's/^test-/status-/')
	if [ -f "${TESTDIR}/${STATUSFILE}" ]; then
		cp "${TESTDIR}/${STATUSFILE}" var/lib/dpkg/status
	else
		touch var/lib/dpkg/status
	fi
	mkdir -p usr/lib/apt
	ln -s ${BUILDDIRECTORY}/methods usr/lib/apt/methods
	cd ..
	local PACKAGESFILE=$(echo "$(basename $0)" | sed 's/^test-/Packages-/')
	if [ -f "${TESTDIR}/${PACKAGESFILE}" ]; then
		cp "${TESTDIR}/${PACKAGESFILE}" aptarchive/Packages
	else
		touch var/lib/dpkg/status
	fi
	echo "RootDir \"${TMPWORKINGDIRECTORY}/rootdir\";" > aptconfig.conf
	echo "Debug::NoLocking \"true\";" >> aptconfig.conf
	echo "APT::Get::Show-User-Simulation-Note \"false\";" >> aptconfig.conf
	export LC_ALL=C
	msgdone "info"
}

configarchitecture() {
	local CONFFILE=rootdir/etc/apt/apt.conf.d/01multiarch.conf
	echo "APT::Architecture \"$1\";" > $CONFFILE
	shift
	while [ -n "$1" ]; do
		echo "APT::Architectures:: \"$1\";" >> $CONFFILE
		shift
	done
}

buildflataptarchive() {
	msginfo "Build APT archive for ${CCMD}$0${CINFO}…"
	cd aptarchive
	APTARCHIVE=$(readlink -f .)
	if [ -f Packages ]; then
		msgninfo "\tPackages file… "
		cat Packages | gzip > Packages.gz
		cat Packages | bzip2 > Packages.bz2
		cat Packages | lzma > Packages.lzma
		msgdone "info"
	fi
	if [ -f Sources ]; then
		msgninfo "\tSources file… "
		cat Sources | gzip > Sources.gz
		cat Sources | bzip2 > Sources.bz2
		cat Sources | lzma > Sources.lzma
		msgdone "info"
	fi
	cd ..
	aptftparchive release . > Release
}

setupflataptarchive() {
	buildflataptarchive
	APTARCHIVE=$(readlink -f ./aptarchive)
	if [ -f ${APTARCHIVE}/Packages ]; then
		msgninfo "\tadd deb sources.list line… "
		echo "deb file://$APTARCHIVE /" > rootdir/etc/apt/sources.list.d/apt-test-archive-deb.list
		msgdone "info"
	else
		rm -f rootdir/etc/apt/sources.list.d/apt-test-archive-deb.list
	fi
	if [ -f ${APTARCHIVE}/Sources ]; then
		msgninfo "\tadd deb-src sources.list line… "
		echo "deb-src file://$APTARCHIVE /" > rootdir/etc/apt/sources.list.d/apt-test-archive-deb-src.list
		msgdone "info"
	else
		rm -f rootdir/etc/apt/sources.list.d/apt-test-archive-deb-src.list
	fi
	aptget update -qq
}

diff() {
	local DIFFTEXT="$($(which diff) -u $* | sed -e '/^---/ d' -e '/^+++/ d' -e '/^@@/ d')"
	if [ -n "$DIFFTEXT" ]; then
		echo
		echo "$DIFFTEXT"
		return 1
	else
		return 0
	fi
}

testequal() {
	local COMPAREFILE=$(mktemp)
	echo "$1" > $COMPAREFILE
	shift
	msgtest "Test for equality of" "$*"
	$* 2>&1 | diff $COMPAREFILE - && msgpass || msgfail
	rm $COMPAREFILE
}

testequalor2() {
	local COMPAREFILE1=$(mktemp)
	local COMPAREFILE2=$(mktemp)
	local COMPAREAGAINST=$(mktemp)
	echo "$1" > $COMPAREFILE1
	echo "$2" > $COMPAREFILE2
	shift 2
	msgtest "Test for equality OR of" "$*"
	$* 2>&1 1> $COMPAREAGAINST
	(diff $COMPAREFILE1 $COMPAREAGAINST 1> /dev/null ||
		diff $COMPAREFILE2 $COMPAREAGAINST 1> /dev/null) && msgpass ||
		( echo "\n${CINFO}Diff against OR 1${CNORMAL}" "$(diff $COMPAREFILE1 $COMPAREAGAINST)" \
		       "\n${CINFO}Diff against OR 2${CNORMAL}" "$(diff $COMPAREFILE2 $COMPAREAGAINST)" &&
		  msgfail )
	rm $COMPAREFILE1 $COMPAREFILE2 $COMPAREAGAINST
}

testshowvirtual() {
	local VIRTUAL="E: Can't select versions from package '$1' as it purely virtual"
	local PACKAGE="$1"
	shift
	while [ -n "$1" ]; do
		VIRTUAL="${VIRTUAL}
E: Can't select versions from package '$1' as it purely virtual"
		PACKAGE="${PACKAGE} $1"
		shift
	done
	msgtest "Test for virtual packages" "apt-cache show $PACKAGE"
	VIRTUAL="${VIRTUAL}
E: No packages found"
	local COMPAREFILE=$(mktemp)
	local ARCH=$(dpkg-architecture -qDEB_HOST_ARCH_CPU)
	eval `apt-config shell ARCH APT::Architecture`
	echo "$VIRTUAL" | sed -e "s/:$ARCH//" -e 's/:all//' > $COMPAREFILE
	aptcache show $PACKAGE 2>&1 | diff $COMPAREFILE - && msgpass || msgfail
	rm $COMPAREFILE
}

testnopackage() {
	msgtest "Test for non-existent packages" "apt-cache show $*"
	local SHOWPKG="$(aptcache show $* 2>&1 | grep '^Package: ')"
	if [ -n "$SHOWPKG" ]; then
		echo
		echo "$SHOWPKG"
		msgfail
		return 1
	fi
	msgpass
}