#!/bin/bash
VERSION=0.6

ADM_DIR=/var/lib/tpkg

rm -f all-packages.txt tier-1-packages.txt tier-2-packages.txt req-packages.txt

OLD_IFS=$IFS


ALL_PKGS=0
REQ_PKGS=0

# start with a fresh list of all installed packages
# cat /dev/null > all-packages.txt
ls -1 $ADM_DIR/packages |egrep -v '*-devel_*|*-docs_*|*-i18n_*|*-solibs_*' > all-packages.tmp
while read PKG ; do
	NAME=${PKG%*_*-*-*}
	echo $NAME' '${PKG} >> all-packages.txt
	(( ALL_PKGS++ ))
done < all-packages.tmp

ls -1 $ADM_DIR/packages |egrep -v '*-devel_*|*-docs_*|*-i18n_*|*-solibs_*|*-locale-*' > all-packages.txt

if [[ $DEBUG ]] ; then
	echo
	echo ALL_PKGS=$ALL_PKGS
	echo PKGS_TODO=$PKGS_TODO
	echo
fi

# tier-1 derives a list of packages which only need glibc 
# or don't have any requireds at all (don't have any required file)
cat /dev/null > tier-1-packages.txt
cat /dev/null > req-packages.txt
COUNT=1
echo "PASS=$COUNT"
TIER_ONE_TOTAL=0
while read PKG ; do
	if [[ -f "$ADM_DIR"/required/$PKG ]] ; then
		(( REQ_PKGS++ ))
		echo "${PKG}" >> req-packages.txt
	else
		echo "${PKG}"  >> tier-1-packages.txt
		(( TIER_ONE_TOTAL++ ))
	fi
done < all-packages.txt
echo "END PASS1"
if [[ $DEBUG ]] ; then 
	echo REQ_PKGS=$REQ_PKGS
	echo TIER-1=$TIER_ONE_TOTAL
	sleep 2
fi

# exit

cat /dev/null > tier-2-packages.txt
#echo "Starting tier-2"
DONE=0
while [[ $DONE != 1 ]] ; do
	# increment the PASS count
	(( COUNT++ ))
	echo "PASS=$COUNT"
	echo "PASS=$COUNT" >> tier-2-packages.txt
	PROCESSED=0
	while read PKG ; do
		NEEDS=0
		FOUND=0
		NAME=${PKG%*_*-*-*}
		#if [[ ! $(grep "^$NAME" tier-2-packages.txt 2> /dev/null) ]] ; then
		if [[ "$(grep "$PKG" tier-2-packages.txt 2> /dev/null)" != "" ]] ; then
			echo "   Already HANDLED: $NAME"
			true
			#(( PROCESSED++ ))
		else
			[[ $DEBUG ]] && echo "HANDLING: $NAME"
			if [[ -f $ADM_DIR/required/$PKG ]] ; then
				for ONE_REQ in $(grep -v '^#' $ADM_DIR/required/$PKG) ; do
					# use this to prefer solib packages
					ONE_REQ=${ONE_REQ%% |*}
					# use this to prefer full packages
					#ONE_REQ=${ONE_REQ#| *}
					
					 [[ $DEBUG ]] && echo ONE_REQ=$ONE_REQ #&& sleep .5
					
					ONE_REQ=$(echo ${ONE_REQ%*_*-*-*})
					
					# [[ $DEBUG ]] && echo ONE_REQ=$ONE_REQ && sleep .5
					
					case $ONE_REQ in
						'|'|' ') continue ;;
						*)	if [[ $(grep "$ONE_REQ"_ tier-1-packages.txt 2> /dev/null) != "" ]] \
								|| [[ $(grep "$ONE_REQ"_ tier-2-packages.txt 2> /dev/null) != "" ]] ; then
								[[ $DEBUG ]] && echo "   Already listed: $ONE_REQ"
								#echo yeah
								#true
								#continue
								FOUND=1
							elif [[ $(grep "${ONE_REQ#| *}"_ tier-1-packages.txt 2> /dev/null) != "" ]] \
								|| [[ $(grep "${ONE_REQ#| *}"_ tier-2-packages.txt 2> /dev/null) != "" ]] ; then
								[[ $DEBUG ]] && echo "   Already listed: $ONE_REQ"
								#true
								#continue
								FOUND=1
							else
								NEEDS=1
							fi
							if [[ $FOUND = 0 ]] && [[ $(grep "$ONE_REQ"_ all-packages.txt) = "" ]] ; then
								echo "-----> Package required by '$NAME' not in database: $ONE_REQ"
								exit
							fi
						;;
					esac
					[[ $FOUND = 1 ]] && break
				done
				
				#[[ $FOUND = 1 ]] && break
				
				if [[ "$NEEDS" = 0 ]] ; then
					if [[ $(grep "$PKG" tier-1-packages.txt) != "" ]] ; then
						true
						echo "Skipping: $PKG"
					else
						[[ $DEBUG ]] && echo "-> Adding: $PKG"
						echo "${PKG}" >> tier-2-packages.txt
					fi
				fi
			else
				echo "Unlisted requires: $NAME" >> unlisted.txt
			fi
		fi
	done < req-packages.txt
	
	#echo "END PASS=$COUNT"
	#echo "END PASS=$COUNT" >> tier-2-packages.txt
	TIER_TWO_TOTAL=$(wc -l tier-2-packages.txt |cut -f1 -d' ')
	
	TOTAL=$(( $TIER_ONE_TOTAL + $TIER_TWO_TOTAL ))
	
	if [[ $DEBUG ]] ; then
		echo
		echo SOLIBS_PKGS=$SOLIBS_PKGS
		echo DEV_PKGS=$DEV_PKGS
		echo I18N_PKGS=$I18N_PKGS
		echo NOARCH_PKGS=$NOARCH_PKGS
		echo DOC_PKGS=$DOC_PKGS
		echo
		echo TIER-1=$TIER_ONE_TOTAL
		echo TIER-2=$TIER_TWO_TOTAL
		echo PROCESSED=$PROCESSED
		echo TOTAL=$TOTAL
		echo REQ_TOTAL=$REQ_TOTAL
		echo PKGS_TODO=$PKGS_TODO
		echo
	fi
	
	
	
	if [[ $(($TIER_ONE_TOTAL + $TIER_TWO_TOTAL )) -ge $(( $ALL_PKGS )) ]] ; then
		DONE=1
	fi
	
done

echo "END PASS=$COUNT"


echo "# GLIBC tier-1 packages" > Compile-Order.txt
#cat tier-1-packages.txt |cut -f1 -d'§' >> Compile-Order.txt
#echo "" >> Compile-Order.txt

#echo "# tier-2 packages" >> Compile-Order.txt
#cat tier-2-packages.txt |cut -f1 -d'§' >> Compile-Order.txt
#echo "" >> Compile-Order.txt

while read PKG ; do
	NAME=${PKG%*_*-*-*}
	echo $NAME >> Compile-Order.txt
done < tier-1-packages.txt


while read PKG ; do
	NAME=${PKG%*_*-*-*}
	echo $NAME >> Compile-Order.txt
done < tier-2-packages.txt

#cat /dev/null > X-Compile-Order.txt
#while IFS='§' read NAME PKG ; do
#	if [[ $(grep "^$NAME" X-file.list) ]] ; then
#		case "$NAME" in
#			#""|gcc) true ;;
#			*) echo "$NAME" >> X-Compile-Order.txt ;;
#		esac
#	fi
#done < Compile-Order.txt