#!/bin/bash

DISEMBEDED_LIB_LIST_1="!!!StandaloneLibraries/filelist.wau"
DISEMBEDED_LIB_LIST="/tmp/buildLibList.0.$$"
ALL_LIB_FILES="/tmp/buildLibList.1.$$"
BUILT_LIST="/tmp/buildLibList.2.$$"
SED_SCRIPT="/tmp/buildLibList.3.$$.sed"
ALL_MOD_DIRS="/tmp/buildLibList.4.$$"
NON_DISEMBEDED_MODS="/tmp/buildLibList.5.$$"
KEEP_ACE2_TOC="Ace2/Ace2.toc"
KEPT_LIST="/tmp/buildLibList.6.$$"

if [ ! -f ${DISEMBEDED_LIB_LIST_1} ]; then
	echo "Couldn't find desembeded library list file ${DISEMBEDED_LIB_LIST}"
	exit 1
fi

# convert the list to dos, or line endings screw up our scripts
cp ${DISEMBEDED_LIB_LIST_1} ${DISEMBEDED_LIB_LIST}
d2u ${DISEMBEDED_LIB_LIST} 2>/dev/null

if [ -f ${ALL_LIB_FILES} ]; then
	rm ${ALL_LIB_FILES}
fi

while read libname
do
	# read each toc file and get the list of libs from it.
	# we can put all of them together, remove "[lL]ibs" prefix, and then use uniq/sort to get single list
	if [[ -d ${libname} && -f ${libname}/${libname}.toc ]]; then
		# found a toc file
		TOCFILE="${libname}/${libname}.toc"
		
		# now remove lines starting with utf8 chars, #, empty lines and get rid of the prefix "libs\", "libs/", "Libs\", "Libs/"
		# echo "------------- ${TOCFILE}"
		if [ ${TOCFILE} = ${KEEP_ACE2_TOC} ]; then
			# keep this list for processing on the disembeded toc files
			sed -e '1s/^\xef\xbb\xbf//;/^#/d;/^$/d;s/^[lL]ibs[\\\/]//' < ${TOCFILE} | tee -a ${ALL_LIB_FILES} > ${KEPT_LIST}
		else
			sed -e '1s/^\xef\xbb\xbf//;/^#/d;/^$/d;s/^[lL]ibs[\\\/]//' < ${TOCFILE} >> ${ALL_LIB_FILES}
		fi
		
		echo "" >> ${ALL_LIB_FILES}
	fi
done < ${DISEMBEDED_LIB_LIST}

sort ${ALL_LIB_FILES} | uniq | sed '/^ *$/d' > ${BUILT_LIST} 

## now ${BUILT_LIST} is a list of all the libraries that need to be commented out of non disembedded mods
## so take each toc file not in dirs not in the ${DISEMBEDED_LIB_LIST}
## and check it for entries that END in anything in our ${BUILT_LIST}
## easiest way to achieve this is to convert our BUILT_LIST into a sed file that searches for any of the entries
## and comments it out
## so the file:
# AceLibrary\AceLibrary.lua
# ...
## becomes
# /^.*AceLibrary\.lua/s/^/#/
# etc
## NOTE: we assume all files are uniquely named, e.g. no other library has a different AceLibrary.lua etc.

# create a file of the basenames of all libs
sed 's/\\/\\\\/g' < ${BUILT_LIST} > ${BUILT_LIST}.1
while read fulldir
do
	basename ${fulldir} >> ${BUILT_LIST}.2
done < ${BUILT_LIST}.1

# and do same with ace keeps
sort ${KEPT_LIST} | uniq | sed '/^ *$/d' > ${BUILT_LIST}.ACE2
sed 's/\\/\\\\/g' < ${BUILT_LIST}.ACE2 > ${BUILT_LIST}.ACE2.1
while read fulldir
do
	basename ${fulldir} >> ${BUILT_LIST}.ACE2.2
done < ${BUILT_LIST}.ACE2.1

# convert ${BUILT_LIST}.2 to a script
sed 's/\./\\\./g;s/^/\/\^\.\*/;s/$/\/s\/\^\/\#\//' < ${BUILT_LIST}.2 > ${SED_SCRIPT}
# above does:
# 1. ... moved to pre-step
# 2. converts . to \.
# 3. inserts "/^.*" at start of every line
# 4. inserts "/s/^/#/" at end of every line

# do same for ace2 libs list
sed 's/\./\\\./g;s/^/\/\^\.\*/;s/$/\/s\/\^\/\#\//' < ${BUILT_LIST}.ACE2.2 > ${SED_SCRIPT}.ACE2

# find all mod dirs NOT in the DISEMBEDED_LIB_LIST
find -maxdepth 1 -type d -printf "%f\n" > ${ALL_MOD_DIRS}
cat ${ALL_MOD_DIRS} ${DISEMBEDED_LIB_LIST} | sort | uniq -u > ${NON_DISEMBEDED_MODS}

# now find the toc file in each of these dirs and apply the sed script to it
if [ ! -s ${NON_DISEMBEDED_MODS} ]; then
	# didn't find any mods to edit
	echo "Could not find any mods to edit toc files for"
	exit 1
fi

while read moddir
do
	MODTOCFILE=$(find ${moddir} -maxdepth 1 -name \*.toc)
	if [[ "${MODTOCFILE}" != "" && -s ${MODTOCFILE} ]]; then
		echo "Processing ${MODTOCFILE}"
		if [ ! -s ${MODTOCFILE}.001 ]; then
			cp ${MODTOCFILE} ${MODTOCFILE}.001
		fi
		sed -f ${SED_SCRIPT} < ${MODTOCFILE} > ${MODTOCFILE}.new
		mv ${MODTOCFILE}.new ${MODTOCFILE}
	fi
done < ${NON_DISEMBEDED_MODS}

# now process the disembeded list by removing the Ace2 libs
while read libdir
do
	LIBTOCFILE=$(find ${libdir} -maxdepth 1 -name \*.toc)
	if [[ "${LIBTOCFILE}" != "" && -s ${LIBTOCFILE} && ${LIBTOCFILE} != ${KEEP_ACE2_TOC} ]]; then
		echo "Library ${LIBTOCFILE} being processed for Ace2 libs"
		if [ ! -s ${LIBTOCFILE}.001 ]; then
			cp ${LIBTOCFILE} ${LIBTOCFILE}.001
		fi
		sed -f ${SED_SCRIPT}.ACE2 < ${LIBTOCFILE} > ${LIBTOCFILE}.new
		mv ${LIBTOCFILE}.new ${LIBTOCFILE}
	fi
done < ${DISEMBEDED_LIB_LIST}

# cleanup
rm ${DISEMBEDED_LIB_LIST}
rm ${ALL_LIB_FILES}
rm ${BUILT_LIST}
rm ${BUILT_LIST}.1
rm ${BUILT_LIST}.2
rm ${BUILT_LIST}.ACE2
rm ${BUILT_LIST}.ACE2.1
rm ${BUILT_LIST}.ACE2.2
rm ${SED_SCRIPT}
rm ${SED_SCRIPT}.ACE2
rm ${ALL_MOD_DIRS}
rm ${NON_DISEMBEDED_MODS}