#!/bin/bash


#DEPEND WANDERER

MAGEFILE=$2
ALLDEPS=""


source /etc/mage.rc
source /etc/init.d/functions

#check_stable_package /path/to/foo.mage
# returns 0=stable 1=unstable
check_stable_package(){
	#be sure no previous $STATES exists
	unset STATE
	
	source $1
	if [ "$?" == "1" ]
	then
		TODESVAR=1
	fi

	if [ "${STATE}" != "stable" ]
	then
		return 1
	fi

	#unset the sourced varibales; 
	#we'll got bad problems later on if we don't do this
	unset PKGNAME
	unset STATE
	unset DESCRIPTION
	unset HOMEPAGE
	unset DEPEND
	unset preinstall
	unset postinstall
		
	return 0
}


#####################
##  rumwandern /path/to/mage/file/.mage
rumwandern(){

	unset DEPEND
	unset MY_DEPEND

	local DFILE
	local SYM
	local DEPNAME
	local HIGHEST_DEPFILE
	local MY_DEPEND
	DFILE=$1

	source ${DFILE}
	MY_DEPEND="${DEPEND}"
	unset DEPEND

	if [ -z "${MY_DEPEND}" ]
	then
		return 1
	fi

	while read SYM DEPNAME
	do
		CAT=$(echo ${DEPNAME}|cut -d / -f1)
		PNAME=$(echo ${DEPNAME%-*}|cut -d / -f2)
		#echo "DEBUG CAT=${CAT}"
		#echo "DEBUG PNAME=${PNAME}"
		#echo "DEBUG DEPNAME=${DEPNAME}"
		
		for i in ${MAGEDIR}/${CAT}/${PNAME}/*.mage
		do
			#we exclude subdirs (for stuff like a md5sum dir)
			if [ ! -d ${i} ]
			then
				check_stable_package ${i}
				if [ "$?" == "0" ]
				then
					HIGHEST_DEPFILE=${i}
				fi

				#debug
				if [ "${TODESVAR}" == 1 ]
				then
					echo -e ${COLRED}"${DFILE}"${COLDEFAULT}
					unset TODESVAR
				fi
			fi
		done

		##check ob schon in ALLDEPS enthalten dann mach weiter
		local x
		x=$(echo ${ALLDEPS}|fgrep "${HIGHEST_DEPFILE}")
		if [ -z "${x}" ]
		then
			### check ob DFILE schon installiert ist ###
			if [ ! -d ${INSTALLDB}/$(basename ${HIGHEST_DEPFILE} .mage) ]
			then
				rumwandern ${HIGHEST_DEPFILE}
				ALLDEPS="${ALLDEPS} ${HIGHEST_DEPFILE}"
			fi
		fi

	done << EOF
$MY_DEPEND
EOF
	return 0
}

### check ob MAGEFILE schon installiert ist
if [ -d ${INSTALLDB}/$(basename ${MAGEFILE} .mage) ]
then
	exit 3
fi

if [ $1 == pretend ]
then
	echo -en "Calculating Dependencies ... "
fi

rumwandern ${MAGEFILE}

if [ $1 == pretend ]
then
	echo "done"
fi

##anhängen des zu installierenden files selber
ALLDEPS="${ALLDEPS} ${MAGEFILE}"


##ausgabe pretend
if [ $1 == pretend ]
then
	####test ausgabe
	declare -i x=0
	for i in ${ALLDEPS}
	do
		x=$x+1
		echo -en "\t${COLBLUE}["
		if [ ${x} -le 9  ]
		then
			echo -en "0"
		fi
		echo -e "${x}] ${COLGREEN}$(basename ${i} .mage)"${COLDEFAULT}
	done
fi

##return ausgabe install
if [ $1 == install ]
then
	echo ${ALLDEPS}
fi