#!/bin/bash

# This script runs the eclipse can do the following:
#  - backup configuration files
#  - restore configuration files from backup loation
#  - run the eclipse reconciler
#  - delete the backup files.

# A list of the files of directory that are to be backed up
config_files=("artifacts.xml" "eclipse.ini" "p2" "configuration")

if [ ! -e /var/run/eclipse/run-reconciler ]
then
    echo "run-reconciler file not present. No need to run the reconciler"
    exit 0
fi

tmp_dir=/var/run/eclipse

if [ -e /usr/lib64/eclipse ]
then
    eclipse_dir=/usr/lib64/eclipse
else
    eclipse_dir=/usr/lib/eclipse
fi

echo "Removing run-reconciler file"
rm -f /var/run/eclipse/run-reconciler

echo "backing up configuration files"
for file in ${config_files[@]}
do
    echo $file
    cp -rp $eclipse_dir/$file $tmp_dir/$file
done

echo "Running eclipse reconciler"
pushd $eclipse_dir
./eclipse --launcher.suppressErrors -nosplash -consolelog -application org.eclipse.equinox.p2.reconciler.application "$@"
r_exit_value=$?

# If the reconciler was run with the -clean options rerun the initializer.
if [[ "$@" == *-clean* ]]
then
    echo "Running the initializer"
    ./eclipse --launcher.suppressErrors -cosolelog -nosplash -application org.eclipse.equinox.initializer.configInitializer -fileInitializer extract_patterns.txt 
    i_exit_value=$?
else
    i_exit_value=0
fi

    # Check exit value
if [ ! $i_exit_value -eq 0 ] || [ ! $r_exit_value -eq 0 ]
then
    # Restore files
    echo "Reconciler failed. Restoring files"
    for file in ${config_files[@]}
    do
	echo $file
	cp --remove-destination -Trp $tmp_dir/$file $eclipse_dir/$file
    done
fi
popd

# delete the backup files
for file in  ${config_files[@]}
do
    rm -rf $tmp_dir/$file
done

exit $r_exit_value