#!/bin/sh
# Magellan Linux Installer (mage.sh)
# version: 0.3.6-r13

##configuration -> mage.rc
#PKGDIR="/usr/src/packages"
PKGSUFFIX="mpk"
#BUILDDIR="/usr/src"
#INSTALLDB="/var/ALXInstDB"
#MAGEDIR="/usr/src/mage-0.2"
MAGENAME="$2"
#PKGNAME="`basename $2 .mage`"
MLIBDIR=/usr/lib/mage
MAGEVERSION=0.3.6-r13

## nur für tests -> normalerweise in /etc/rc.d/init.d/functions
COLRED="\033[1;6m\033[31m"
COLGREEN="\033[1;6m\033[32m"
COLBLUE="\033[1;6m\033[34m"
COLDEFAULT="\033[0m"

# default path
PATH="${PATH}:${MLIBDIR}"

##functions
if [ -f /etc/mage.rc ]
then
	source /etc/mage.rc
else
	echo "Your /etc/mage.rc is missing. Aborting."
	exit 1
fi

#virtualdb locations
VIRTUALDB_DEFAULTS=/etc/mage-profile/virtuals.defaults
VIRTUALDB_FILE=${INSTALLDB}/virtuals

#fix small problems
[ ! -e ${VIRTUALDB_FILE} ] && touch ${VIRTUALDB_FILE}

if [ ! -e ${VIRTUALDB_DEFAULTS} -a "$1" != "update" ]
then
	echo
	echo "Please choose an profile from the mage tree."
	echo "ln -snf ${MAGEDIR}/profiles/profilename /etc/mage-profile"
	exit 1
fi


#loads functions
source ${MLIBDIR}/mage3.functions.sh

#############DIALOGE##############
showversion() {
	echo -en "Magellan Package Manager v${MAGEVERSION} "
	echo -e  "-- Niels Rogalla (niro@magellan-linux.de)"
}

print_usage(){
	showversion
	echo -e "\nUsage: (basename $0) [option] pkgname ..."
	echo "Options:"
	echo -e "\tpretend        - pretends dependencies of a package"
	echo -e "\tsrcpretend     - pretends dependencies of a package (build from source)"
	echo -e "\tinstall        - installs a package"
	echo -e "\tsrcinstall     - installs a package from source"
	echo -e "\tuninstall      - removes a package"
	echo -e "\tupdate         - updates mage-tree"
	echo -e "\tsearch         - searches mage-tree for a package"
	echo -e "\tclean          - removes *all* downloaded packages"
	echo -e "\tunpack         - unpacks a package"
	echo -e "\tdownload       - downloads a package"
	echo -e "\tkeepfiles      - prevents files from uninstalling"
	echo -e "\tinject         - inject a package to fake dependencies" 
	echo -e "\treminjected    - removes *all* fake packages"
	echo -e "\tversion        - prints version info"
	echo
	echo -e "Other:"
	echo -e "NOINSTALL=yes $(basename $0) srcinstall PACKAGE"
	echo -e "Builds a Package with its dependencies, but won't install anything."
	echo
	echo -e "BOOTSTRAP=yes $(basename $0) srcinstall PACKAGE"
	echo -e "Force an bootstrap build for a Package."
	echo -e "Works only for packages wich take use of that (like glibc and binutils),"
	echo -e "by any other this feature will simple be ignored."
	echo
	echo -e "USE_UNSTABLE=true $(basename $0) [src]install PACKAGE"
	echo -e "Overrides stable packages; you can install packages that are marked unstable."
	echo
}

run_etc_update() {
	if [ ${PROTECT_COUNT} -eq 0 ]
	then
		return 0
	fi
	
	echo
	echo "Important:"
	echo "${PROTECT_COUNT} protected file(s) were installed."
	echo
	echo "Please run 'etc-update' to update your configuration files."
	echo
}

mage_install_virtual(){
	echo -e "\nInstallation of Package: ${COLGREEN}$PKGNAME${COLDEFAULT}\n"

	export -f preinstall 2> /dev/null
	if [ "$?" == "0" ]
	then
		echo -e "\nRunning Preinstall ... \n"
		preinstall
		unset preinstall
	fi

	#creates fake db entry
	install_database_entry ${PKGNAME} ${PKGTYPE}
	
	export -f postinstall 2> /dev/null
	if [ "$?" == "0" ]
	then
		echo -e "\nRunning Postinstall ... \n"
		postinstall
		unset postinstall
	fi

	#check for virtuals and PROVIDE
	# if so install it to virtualdb
	register_virtual_pkg
	
	${MLIBDIR}/env-rebuild.sh
	echo -e "\nPackage '${PKGNAME/-${ARCH}/}' sucessfully installed.\n"

	#unsets virtual state of packages
	unset PKGTYPE
	return 0
}


register_virtual_pkg(){
	#first check if this pkg is an virtual_pkg
	#echo "DEB: PKGNAME=${PKGNAME}"
	
	if [ -e ${BUILDDIR}/virtuals/virtuals.${PKGNAME/-${ARCH}/} ]
	then
		#add it
		source ${BUILDDIR}/virtuals/virtuals.${PKGNAME/-${ARCH}/}
		virtuals_add ${DB_VIRTUAL_NAME} ${DB_PKG_NAME}
		
		#than clean up
		unset DB_VIRTUAL_NAME DB_PKG_NAME
		rm ${BUILDDIR}/virtuals/virtuals.${PKGNAME/-${ARCH}/}
	fi
	
	if [ -n "${PROVIDE}" ]
	then
		local my_pgk
		#cut arch
		my_pkg=${PKGNAME/-${ARCH}/}
		#cut version & build
		my_pkg=${my_pkg%-*-*}
		
		virtuals_add ${PROVIDE} ${CATEGORIE}/${my_pkg}
		
		unset PROVIDE
	fi
}

unregister_virtual_pkg(){
	if [ -n "${PROVIDE}" ]
	then
		local my_pgk
		local my_cat
		local directory
		local x
		
		#cut arch
		my_pkg=${PKGNAME/-${ARCH}/}
		
		#cut version & build
		my_pkg=${my_pkg%-*-*}
		my_cat=$(dirname ${my_pkg})

		#check if this was the last one or if any other exists
		for directory in ${INSTALLDB}/${my_cat}/*
		do
			# continue if not a directory,
			# or the same PNAME-PVER-PBUILD
 			if [ ! -d "${directory}" ]
			then
				continue
			fi
			
			#check if $directory is the same as $my_pkg
			x=$(basename ${directory})
			if [[ ${my_cat}/${x%-*-*} = ${my_pkg} ]]
			then
				# break here
				echo "==== another version of ${my_pkg} exists, not deleting ${VIRTUAL_NAME} ..."
				return 0
			fi
		done

		#virtuals_del ${PROVIDE} ${CATEGORIE}/${my_pkg}
		
		#my_pkg has already the categorie -> ex my_pkg=x11-base/xfree
		virtuals_del ${PROVIDE} ${my_pkg}
		
		unset PROVIDE
	fi
}

mage_install_sources() {

	#creates fake db entry
	install_database_entry ${PKGNAME} ${PKGTYPE}
	
	#check for virtuals and PROVIDE
	# if so install it to virtualdb
	register_virtual_pkg
	
	echo
	echo -e  "This Package is a Source Package."
	echo
	echo -e  "Only 'srcinstall' works with this type of packages"
	echo -en "If you have done a srcinstall before, "
	echo -e  "you will find the files in /usr/src."
	echo
	
	#nice timer (4 seconds)
#	local x
#	declare -i x=4
#	echo -en "Continues in 4s ..."
#	while [ ${x} -gt 0 ]
#	do
#		i=${x}+1
#		echo -en "\b\b\b\b\b\b${x}s ..."
#		#beeper
#		echo -en "\a"
#		sleep 1
#	done
#	echo

	sleep 1
	xtitleclean
}

mage_install() {
	local MAGEFILE	
	local PKGTARBALL
	
	MAGEFILE=$1	

	source ${MAGEFILE}
	
	#abbruch wenn schon installiert
	if [ -e ${INSTALLDB}/${PKGNAME/-${ARCH}/} ]
	then
		echo -en "\n${COLRED}Package '${PKGNAME/-${ARCH}/}'" \
		echo -e  "already installed. Installation Aborted.${COLDEFAULT}\n"
		exit 3
	fi
	
	xtitle "[ Installing ${PKGNAME/-${ARCH}/} ]"

	if [ "${PKGTYPE}" == "virtual" ]
	then
		mage_install_virtual
		return 0
	fi
	
	if [ "${PKGTYPE}" == "sources" ]
	then
		mage_install_sources
		return 0
	fi

	if [ ! -e ${PKGDIR}/${PKGNAME}.${PKGSUFFIX} ]
	then
		echo -en "\nPrefetching needed Packages for "
		echo -e  "${COLGREEN}${PKGNAME/-${ARCH}/}${COLDEFAULT}...\n"
		getpackages
	fi

	echo -e "\nInstallation of Package: ${COLGREEN}${PKGNAME/-${ARCH}/}${COLDEFAULT}\n"
	#( build_unpackpkg ) | echo -e "Unpacking Package ...\n"
	
	echo -en "Unpacking Package ..."
	build_unpackpkg
	echo "done"

	##preinstall scripte
	export -f preinstall 2> /dev/null
	if [ "$?" == "0" ]
	then
		echo -e "\nRunning Preinstall ... \n"
		preinstall
		unset preinstall
	fi

	#install of package
	if [ "$VERBOSE" == "off" ]
	then
		#spinner disabled
		#touch /var/tmp/proz
		#build_doinstall|spin_processbar
		
		echo -en "Processing ... "
		build_doinstall ${PKGNAME}
		echo "done"
	fi

	if [ "$VERBOSE" == "on" ]
	then
		#build_doinstall
		build_doinstall ${PKGNAME}
	fi

	#postinstall scripte
	export -f postinstall 2> /dev/null
	if [ "$?" == "0" ]
	then
		echo -e "\nRunning Postinstall ... \n"
		postinstall
		unset postinstall
	fi

	#install database entry
	install_database_entry ${PKGNAME}
	
	#cleanup
	if [ -d ${BUILDDIR}/${PKGNAME} ]
	then
		rm -rf ${BUILDDIR}/${PKGNAME}
	fi

	
	#check for virtuals and PROVIDE
	# if so install it to virtualdb
	register_virtual_pkg
	
	
	#update mtimes of packages and db_entries
	update_mtime
	
	#rebuilds toplevel info node
	echo -en "\n>>>> Rebuilding top-level info node ... "
	${MLIBDIR}/mkinfodir /usr/share/info > /usr/share/info/dir \
		&& echo "done" || echo "false"
		
	#rebuilds the enviroment with the content of /etc/env.d
	${MLIBDIR}/env-rebuild.sh

	xtitleclean

	echo -e "\nPackage '${PKGNAME/-${ARCH}/}' sucessfully installed.\n"
}

mage_uninstall() {
	#	#installdbhome      #packagedir			#magefile
	#source ${INSTALLDB}/$(basename ${MAGENAME} .mage)/$(basename ${MAGENAME})
	#source ${INSTALLDB}/${CATEGORIE}/$(basename ${MAGENAME} .mage)/$(basename ${MAGENAME})
	
	local UNINST_MAGEFILE CAT_PKGNAME
	
	CAT_PKGNAME=$1
	
	#trim pkgname from CAT_PKGNAME to get magefile name
	UNINST_MAGEFILE="$(echo ${CAT_PKGNAME}| cut -d / -f2).mage"
	
	#then source it
	source ${INSTALLDB}/${CAT_PKGNAME}/${UNINST_MAGEFILE}
	
	#fix for mage-0.3.6-r5
	#PKGNAME=${PKGNAME/-${ARCH}/}
	PKGNAME=${CAT_PKGNAME}

	#if [ ! -e ${INSTALLDB}/${PKGNAME/-${ARCH}/} ]
	if [ ! -e ${INSTALLDB}/${CAT_PKGNAME} ]
	then
		echo -e "\nPackage '${PKGNAME}' is not installed. Uninstallation Aborted.\n"
		exit 3
	fi
	
	echo -e "\nUninstall of Package:\t${COLRED}${PKGNAME}${COLDEFAULT}\n"

	if [ -z "${MAGE_UNINSTALL_TIMEOUT}" ]
	then
		MAGE_UNINSTALL_TIMEOUT=5
	fi
	
	for ((i=0; i < MAGE_UNINSTALL_TIMEOUT; i++))
	do 
		timeout=$(expr ${MAGE_UNINSTALL_TIMEOUT} - ${i})
		echo -e "Starting in ${COLRED} ${timeout}" \
				"${COLDEFAULT} seconds ... ( [CTRL+C] to abort )"
		sleep 1
		#moves the cursor up
		echo -en \\033[A
	done

	#moves the cursor up
	echo -en \\033[A
	#min. 30 spaces needed for clearing up the rest of the line
	echo -e "\nUninstall ${COLRED}started${COLDEFAULT} ..." \
		"                              \n"
	sleep 1

	
	##preremove scripte
	export -f preremove 2> /dev/null
	if [ "$?" == "0" ]
	then
		echo -e "\nRunning Preremove ... \n"
		preremove
		unset preremove
	fi
	
	#runs uninstall
	build_douninstall ${PKGNAME}
	
	#postremove scripte
	export -f postremove 2> /dev/null
	if [ "$?" == "0" ]
	then
		echo -e "\nRunning Postremove ... \n"
		postremove
		unset postremove
	fi
	
	#remove database entry
	remove_database_entry ${PKGNAME}
	
	#check for PROVIDE
	# if so uninstall it from virtualdb
	unregister_virtual_pkg
	
	#rebuilds toplevel info node
	echo -en "\n>>>> Rebuilding top-level info node ... "
	${MLIBDIR}/mkinfodir /usr/share/info > /usr/share/info/dir \
		&& echo "done" || echo "false"

	#rebuilds the enviroment with the content of /etc/env.d
	${MLIBDIR}/env-rebuild.sh

	echo -e "\nPackage '${PKGNAME}' sucessfully removed.\n"
}


case "$1" in
	download)
		choppkgname
		getcategorie
		get_highest_magefile || exit 1
		source ${MAGEFILE}
		getpackages
		;;
		
	pretend)
		choppkgname
		getcategorie
		get_highest_magefile || exit 1
		${MLIBDIR}/depwanderer.sh pretend ${MAGEFILE}
		#abort already installed
		if [ "$?" == "3" ]
		then
			echo -en "Package "
			echo -en "${COLRED}$(basename ${MAGEFILE} .mage)${COLDEFAULT}"
			echo -e  " already installed."
		fi
		;;
	
	srcpretend)
		choppkgname
		getcategorie
		get_highest_magefile || exit 1
		${MLIBDIR}/depwanderer.sh srcpretend ${MAGEFILE}
		#abort already installed
		if [ "$?" == "3" ]
		then
			echo -en "Package "
			echo -en "${COLRED}$(basename ${MAGEFILE} .mage)${COLDEFAULT}"
			echo -e  " already installed."
		fi
		;;
		
	install)
		#counter for protected files
		declare -i PROTECT_COUNT=0
		choppkgname
		getcategorie
		get_highest_magefile || exit 1
		ALLDEPS="$(/usr/lib/mage/depwanderer.sh install ${MAGEFILE})"
		#abort already installed
		if [ "$?" == "3" ]
		then
			echo -en "Package "
			echo -en "${COLRED}$(basename ${MAGEFILE} .mage)${COLDEFAULT}"
			echo -e " already installed."
			echo -e  "Installation aborted."
			exit 0
		fi
		for i in ${ALLDEPS}
		do
			#first unset all vars to be safe
			unset PKGNAME
			unset STATE
			unset DESCRIPTION
			unset HOMEPAGE
			unset DEPEND
			unset SDEPEND
			unset PROVIDE
			unset PKGTYPE
			unset preinstall
			unset postinstall

			#then source an evtl new generated profile
			[ -e /etc/profile ] && source /etc/profile

			#than install
			MY_CAT_FIX="$(dirname ${i})"
			CATEGORIE="$(basename ${MY_CAT_FIX%/*})"
			mage_install ${i}
		done
		run_etc_update
		;;
		
	srcinstall)
		#counter for protected files
		declare -i PROTECT_COUNT=0
		choppkgname
		getcategorie
		get_highest_magefile || exit 1
		ALLDEPS="$(/usr/lib/mage/depwanderer.sh srcinstall ${MAGEFILE})"
		#abort already installed
		if [ "$?" == "3" ]
		then
			echo -en "Package "
			echo -en "${COLRED}$(basename ${MAGEFILE} .mage)${COLDEFAULT}"
			echo -e " already installed."
			echo -e  "Installation aborted."
			exit 0
		fi
		for i in ${ALLDEPS}
		do
			#first unset all vars to be safe
			unset PKGNAME
			unset STATE
			unset DESCRIPTION
			unset HOMEPAGE
			unset DEPEND
			unset SDEPEND
			unset PROVIDE
			unset PKGTYPE
			unset preinstall
			unset postinstall

			#then source an evtl new generated profile
			[ -e /etc/profile ] && source /etc/profile

			#than srcinstall
			MY_CAT_FIX="$(dirname ${i})"
			CATEGORIE="$(basename ${MY_CAT_FIX%/*})"
			#builds the package from source
			${MLIBDIR}/sourceinstall.sh ${i} || exit 1
		done
		run_etc_update
		;;

	uninstall)
			RESULT=$(get_magefile_to_uninstall ${MAGENAME})
			#get_magefile_to_uninstall ${MAGENAME}
			#echo $?
			#read
			case $? in
				0)
					#MAGENAME=${RESULT}
					#mage_uninstall
					mage_uninstall ${RESULT}
					;;
				1)
					echo "No package found named '${RESULT}'."
					exit 1
					;;
				2)
					echo -e ${COLRED}"Warning: More than one package found ..."${COLDEFAULT}
					echo
					echo "Please select the package you want to uninstall:"
					echo
					declare -i i=0
					declare -i USERSEL=0
					for x in ${RESULT}
					do
						echo -e "\t${COLBLUE}[${i}] ${COLGREEN}$(basename ${x})${COLDEFAULT}"
						SELECTION[${i}]=${x}
						i=${i}+1
					done
					echo
					echo -n "Choose a number: "
					read USERSEL
					
					if [ ${USERSEL} -ge 0 -a ${USERSEL} -le ${i} ]
					then
						#the correct magefile
						#MAGENAME="${SELECTION[${USERSEL}]}/$(basename ${SELECTION[${USERSEL}]}).mage"
						MAGENAME="${SELECTION[${USERSEL}]}"
						mage_uninstall ${MAGENAME}
					else
						echo "Wrong input. Uninstall abortet ..."
						exit 1
					fi
					#echo
					#echo "Uninstallation Aborted."
					#exit 1
					;;
			esac
		;;

	search)
		${MLIBDIR}/pkgsearch.sh ${MAGENAME}
		;;

	unpack)
		build_unpackpkg
		;;

	update)
		syncmage
		;;
	clean)
		cleanpkg
		;;
	keepfiles)
		keepfiles "$2" "$3"
		;;
	inject)
		injectpkg "$2"
		;;
	reminjected)
		reminjected
		;;
	version)
		showversion
		;;
	*)
		print_usage
		;;
esac