#! /bin/bash
#
# Copyright (C) 2008 Iowa State University 
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program.  If not, see <http://www.gnu.org/licenses/>.
#

SRCDIR="@srcdir@"
APPNAME="GamessQ"
EXECs="gamessq gamessqd"
EXECDIR="@top_builddir@/src"
APPDIR="$APPNAME.app"

if [ ! -d "$APPDIR" ]
then
echo "Building $APPDIR directory..."
mkdir "$APPDIR"
mkdir "$APPDIR/Contents"
mkdir "$APPDIR/Contents/MacOS"
mkdir "$APPDIR/Contents/Frameworks"
mkdir "$APPDIR/Contents/Resources"
fi

echo "Copying Info.plist..."
cp "$SRCDIR/src/Info.plist" "$APPDIR/Contents/"

echo "Copying images..."
for file in `ls "$SRCDIR/src/icons" |grep png`
do
echo $file
cp "$SRCDIR/src/icons/$file" "$APPDIR/Contents/Resources/$file"
done
echo "$APPNAME.icns"
cp "$SRCDIR/src/icons/$APPNAME.icns" "$APPDIR/Contents/Resources/"

#
# This function filters the list if libraries given by otool looking for the
# ones we need to copy into our bundle. this function should return 0 if the
# library is one we need to copy, and fail otherwise
#
filter_lib() {(
	set -e
	if echo "$1" | grep 'libwx'; then exit 0; fi
	echo "$1" | grep -v '^/System/Library/Frameworks'
	exit 1
) > /dev/null; }

###############################################################################
#
# You Should never need to touch anything beyond this point. Do so at your own
# personal risk!
#
###############################################################################

get_file_path() {
echo "$1" | sed -n 's/\(.*\/\)[^\/]*$/\1/gp'
}

get_file_name() {
echo "$1" | sed 's/.*\/\([^\/]*\)$/\1/g'
}

find_final_link() {(
LINKPATH="`ls -l "$1" | sed -n 's/^.* -> \\(.*\\)$/\1/gp'`"
if [ -z "$LINKPATH" ]; then
	echo $1
else
	DIR="`get_file_path "$1"`"
	if [ -n "$DIR" ]; then cd "$DIR"; fi
	DIR="`get_file_path "$LINKPATH"`"
	if [ -n "$DIR" ]; then cd "$DIR"; fi
	find_final_link "`pwd`/`get_file_name "$LINKPATH"`"
fi
); }

# lib_base_filename execfilename libstring
lib_base_filename() {
if echo "$2" | grep '^@executable_path' > /dev/null; then
	FILEPATH="`echo "$2" | sed 's/^@executable_path\///g'`"
	if [ `echo "$FILEPATH" | cut -c1` != "/" ]; then
		FILEPATH="`get_file_path "$1"`$FILEPATH"
	fi
else
	FILEPATH="$2"
fi

# if the file doesn't exist, we fail
if [ ! -f "$FILEPATH" ]; then
	echo "File not Found: $FILEPATH"
	return 1
fi

find_final_link "$FILEPATH"
}

ALL_LIBS=""
copy_libs() {
	for line in `otool -L "$1" | sed -n 's/\(.*[^\\ ]\) (.*/\1/gp'`
	do
		if filter_lib "$line"; then
			lib="`lib_base_filename "$1" "$line"`"
			libname="`get_file_name "$lib"`"

			echo "Fixing Link: `get_file_name "$1"`->$libname"

			# Correct the library links
			install_name_tool -change "$line" \
					"@executable_path/../Frameworks/$libname" "$1"

			# Make sure we have a copy in the Frameworks directory
			FOUND="false"
			for item in $ALL_LIBS
			do
				if [ "$item" = "$lib" ]
				then
					FOUND="true"
				fi
			done
			if [ $FOUND = "false" ]
			then
				ALL_LIBS="$ALL_LIBS $lib"
				echo "Adding missing library: $libname"
				cp "$lib" "$APPDIR/Contents/Frameworks/$libname"

				# Ensure the newly copied library has the proper links
				copy_libs "$APPDIR/Contents/Frameworks/$libname"

				# Fix the libraries personal name
				install_name_tool -id \
						"@executable_path/../Frameworks/$libname" \
						"$APPDIR/Contents/Frameworks/$libname"
			fi
		fi
	done

	# Fix stuff messed up by recursion
	libname="`get_file_name "$1"`"
}

echo "Copying executables..."
for file in $EXECs
do
echo $file
cp "$EXECDIR/$file" "$APPDIR/Contents/MacOS"
done

echo "Fixing Links..."
for file in $EXECs
do
copy_libs "$APPDIR/Contents/MacOS/$file"
done