#!/bin/bash
# Function checkLink:
# args: $1 - file
#
# Will loop through all dynamic links for $file, and update each to be relative.
function checkLink {
	#echo "checkLink called with $1 $2"
	local FILE=$1

	otool -L $FILE | grep -v "${APP}" | grep -v '/usr/lib' | grep -v '/System/' | grep -v "@executable_path" | cut -f 1 -d ' ' | while read X
	do 
		local NAME=${LIB}/`basename "$X"`
		if [ ! -f "${NAME}" ]
		then
			cp $X "${NAME}"
		
			#Recursively update the linkage of libraries
			checkLink "${NAME}"
		fi
	done
}

APP=DarkTable.app
CONTENTS=${APP}/Contents
RESOURCES=${CONTENTS}/Resources
MACOS=${CONTENTS}/MacOS
BIN=${MACOS}/bin
ETC=${MACOS}/etc
LIB=${MACOS}/lib
SHARE=${MACOS}/share
RELEASE=build/release
DMG=${RELEASE}/DarkTable.dmg
EXECUTABLE=bin/darktable
BUILD_FOLDER=./packaging/macosx

#Find where MacPorts is installed.  We take a known binary (port), which is in <MacPorts>/bin, and 
# go up a level to get the main install folder.
MACPORTS_PREFIX=`which port`
MACPORTS_PREFIX=`dirname $MACPORTS_PREFIX`
MACPORTS_PREFIX=`dirname $MACPORTS_PREFIX`

if [ ! -d ${RELEASE} ]; then
	echo "Please run this from the root of the project; i.e. ${BUILD_FOLDER}/`basename $0`."
	exit
fi

if [ -d "${APP}" ]; then
	echo "Removing old application..."
	rm -rf "${APP}"
fi
if [ -f ${DMG} ]; then
	echo "Removing old disk image..."
	rm "${DMG}"
fi

echo "Making application directory structure..."
mkdir -p "${RESOURCES}"
mkdir -p "${ETC}"
mkdir -p "${LIB}"
mkdir -p "${SHARE}/mime"

#Copy over non-explicitly linked libraries
echo "Copying libraries from ${MACPORTS_PREFIX}..."
cp -R ${MACPORTS_PREFIX}/lib/pango ${LIB}
cp -R ${MACPORTS_PREFIX}/lib/gtk-2.0 ${LIB}

#Copy over mimes (if a mime is copied, and nobody hears, is it really copied?)
echo "Copying shared files from ${MACPORTS_PREFIX}..."
cp -R ${MACPORTS_PREFIX}/share/mime/* ${SHARE}/mime

#Copy over etc files, and modify as needed
echo "Copying configuration files from ${MACPORTS_PREFIX} and modifying for standalone app bundle..."
cp -R $MACPORTS_PREFIX/etc/gtk-2.0 ${ETC}
cp -R $MACPORTS_PREFIX/etc/pango ${ETC}
ESCAPED_MACPORTS_PREFIX=`echo ${MACPORTS_PREFIX} | sed -e 's/\\//\\\\\\//g'`
sed -i .bak -e "s/${ESCAPED_MACPORTS_PREFIX}/@executable_path\/../g" ${ETC}/gtk-2.0/gdk-pixbuf.loaders ${ETC}/pango/pango.modules
echo -e "[Pango]\nModuleFiles = /tmp/`basename ${EXECUTABLE}`_pango.modules" > ${ETC}/pango/pangorc


#Copy over the release files
echo "Copying release files..."
cp -R ${RELEASE}/* ${MACOS}

#Copy application-specific stuff like icons and startup script
echo "Creating required application bundle files..."
cp ${BUILD_FOLDER}/Info.plist ${CONTENTS}
cp cmake/macosx/darktable.icns ${RESOURCES}
cp ${BUILD_FOLDER}/start ${MACOS}

#Copy and relink the explicitly defined libraries
echo "Recursively copying libraries referenced by executable..."
checkLink "${MACOS}/${EXECUTABLE}"


#Make a .dmg for distribution and delete the .app
echo "Creating distribution .dmg..."
hdiutil create -srcdir ${APP} ${DMG}
echo "Cleaning up..."
rm -rf ${APP}

echo "All done!"