#!/bin/sh

bundle="$1"

if ! test -d "$bundle" ; then
	echo "${bundle} is no bundle!" >&2
	exit 1
fi

if test -z ${QTDIR} ; then
	echo "QTDIR environment variable not set"
	exit 1
else
	echo "QTDIR=${QTDIR}"
fi

test -d "${bundle}/Contents/Resources" || mkdir -p "${bundle}/Contents/Resources" || exit 1
# Create qt.conf so that app knows where the Plugins are present
cat >> "${bundle}/Contents/Resources/qt.conf" << EOF
[Paths]
Plugins = PlugIns
EOF

test -d "${bundle}/Contents/Frameworks" || mkdir -p "${bundle}/Contents/Frameworks" || exit 1
test -d "${bundle}/Contents/PlugIns/platforms" || mkdir -p "${bundle}/Contents/PlugIns/platforms" || exit 1
cp -f ${QTDIR}/plugins/platforms/libqcocoa.dylib "${bundle}/Contents/PlugIns/platforms" || { echo libqcocoa.dylib not found in ${QTDIR}/plugins/platforms; exit 1; }
cp -f ${PGDIR}/lib/libpq.5.dylib "${bundle}/Contents/Frameworks" || { echo libpq.5.dylib not found in ${PGDIR}; exit 1; }

function CompleteSingleApp() {
	local bundle=$1 tag=$(basename "$1") todo todo_old fw_relpath lib lib_bn nested_app na_relpath

	echo "Completing app: ${bundle}"
	pushd "${bundle}" > /dev/null

	#We skip nested apps here - those are treated specially
	todo=$(file `find ./ -perm +0111 ! -type d ! -path "*.app/*" ! -name "*.app"` | grep -E "Mach-O 64-bit" | awk -F ':| ' '{ORS=" "; print $1}')

	echo "App: ${tag}: Found executables: ${todo}"
	while test "${todo}" != ""; do
		todo_old=${todo} ;
		todo="" ;
		for todo_obj in ${todo_old}; do
			echo "App: ${tag}: Post-processing: ${todo_obj}"

			#Figure out the relative path from todo_obj to Contents/Frameworks
			fw_relpath=$(echo "${todo_obj}" |\
				sed -n 's|^\(\.//*\)\(\([^/][^/]*/\)*\)[^/][^/]*$|\2|gp' | \
				sed -n 's|[^/][^/]*/|../|gp' \
			)"Contents/Frameworks"
			fw_relpath_old=${fw_relpath}

			fw_loc="Contents/Frameworks"

			#Find all libraries $todo_obj depends on, but skip system libraries
			for lib in $(
				otool -L ${todo_obj} | \
				grep "Qt\|dylib\|Frameworks\|PlugIns" | grep -v ":" | sed 's/(.*//' | egrep -v '(/usr/lib)|(/System)|@executable_path@' \
			) $(otool -L ${todo_obj} | grep "Python" | grep -v ":" | sed 's/(.*//' \
			); do
				if echo ${lib} | grep "PlugIns\|libqcocoa"  > /dev/null; then
					lib_loc="Contents/PlugIns/platforms"
				elif echo ${lib} | grep "Qt" > /dev/null; then
					qtfw_path="$(dirname ${lib} | sed 's|.*\(Qt.*framework\)|\1|')"
					lib_loc="Contents/Frameworks/${qtfw_path}"
					if [ "$(basename ${todo_obj})" = "${lib}" ]; then
						lib_loc="$(dirname ${todo_obj})"
						qtfw_path=$(echo ${lib_loc} | sed 's/Contents\/Frameworks\///')
					fi
				elif echo ${lib} | grep "Python" > /dev/null; then
					pyfw_path="$(dirname ${lib} | sed 's|.*\(Python.*framework\)|\1|')"
					lib_loc="Contents/Frameworks/${pyfw_path}"
					if [ "$(basename ${todo_obj})" = "${lib}" ]; then
						lib_loc="$(dirname ${todo_obj})"
						pyfw_path=$(echo ${lib_loc} | sed 's/Contents\/Frameworks\///')
					fi
				else
					lib_loc="Contents/Frameworks"
				fi
				lib_bn="$(basename "${lib}")" ;
				if ! test -f "${lib_loc}/${lib_bn}"; then
                                        target_file=""
					target_path=""
					echo "App: ${tag}: Adding symlink: ${lib_bn} (because of: ${todo_obj})"
					# Copy the QT and Python framework
					if echo ${lib} | grep Qt > /dev/null ; then
						test -d ${lib_loc} || mkdir -p ${lib_loc}
						echo Copying -R ${QTDIR}/lib/${qtfw_path}/${lib_bn} to ${lib_loc}/
						cp ${QTDIR}/lib/${qtfw_path}/${lib_bn} ${lib_loc}/
					elif echo ${lib} | grep Python > /dev/null ; then
						test -d ${lib_loc} || mkdir -p ${lib_loc}
						cp -R "${lib}" "${lib_loc}/${lib_bn}"
					else
						cp -R "${lib}" "${lib_loc}/${lib_bn}"
					fi
					if ! test -L "${lib_loc}/${lib_bn}"; then
						chmod 755 "${lib_loc}/${lib_bn}"
					else
						target_file=$(readlink "${lib}")
						target_path=$(dirname "${lib}")/${target_file}
					        echo "App: ${tag}: Adding symlink target: ${target_path}"
						cp "${target_path}" "${lib_loc}/${target_file}"
						chmod 755 "${lib_loc}/${target_file}"
					fi
					echo "Rewriting ID in ${lib_loc}/${lib_bn} to ${lib_bn}"
                                        echo install_name_tool -id "${lib_bn}" "${lib_loc}/${lib_bn}"
                                        install_name_tool \
                                                -id "${lib_bn}" \
                                                "${lib_loc}/${lib_bn}" || exit 1
					todo="${todo} ./${lib_loc}/${lib_bn}"
				fi
				if echo ${lib} | grep Qt > /dev/null ; then
					fw_relpath="${fw_relpath}/${qtfw_path}"
				fi
				if echo ${lib} | grep Python > /dev/null ; then
					fw_relpath="${fw_relpath}/${pyfw_path}"
				fi
				chmod +w ${todo_obj}
				echo "Rewriting library ${lib} to @loader_path/${fw_relpath}/${lib_bn} in ${todo_obj}"
                                        echo install_name_tool -change "${lib}" "@loader_path/${fw_relpath}/${lib_bn}" "${todo_obj}"
				install_name_tool -change \
					"${lib}" \
					"@loader_path/${fw_relpath}/${lib_bn}" \
					"${todo_obj}" || exit 1
                                install_name_tool -change \
                                        "${target_path}" \
                                        "@loader_path/${fw_relpath}/${target_file}" \
                                        "${todo_obj}" || exit 1
				fw_relpath="${fw_relpath_old}"
			done
		done
	done

	# Fix the rpaths for psycopg module
	find "${bundle}/Contents/Resources/venv/" -name _psycopg.so -print0 | xargs -0 install_name_tool -change libpq.5.dylib @loader_path/../../../../../../Frameworks/libpq.5.dylib
	find "${bundle}/Contents/Resources/venv/" -name _psycopg.so -print0 | xargs -0 install_name_tool -change libssl.1.0.0.dylib @loader_path/../../../../../../Frameworks/libssl.1.0.0.dylib
	find "${bundle}/Contents/Resources/venv/" -name _psycopg.so -print0 | xargs -0 install_name_tool -change libcrypto.1.0.0.dylib @loader_path/../../../../../../Frameworks/libcrypto.1.0.0.dylib

	echo "App completed: ${bundle}"
	popd > /dev/null
}

CompleteSingleApp "${bundle}"