#!/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 [ $# -ge 2 ]
then
    echo "backing up configuration files"
    for file in ${config_files[@]}
    do
	echo $file
	cp -r $1/$file $2/$file
    done

    echo "Running eclipse reconciler"
    pushd $1
    ./eclipse --launcher.suppressErrors -nosplash -consolelog -application org.eclipse.equinox.p2.reconciler.application ${@:3}
    exit_value=$?

    # Check exit value
    if [ ! $exit_value -eq 0 ]
    then
	# Restore files
	echo "Reconciler failed. Restoring files"
	for file in ${config_files[@]}
	do
	    echo $file
	    cp --remove-destination -Tr $2/$file $1/$file
	done
    fi
    popd

    #delete the backup files
    for file in  ${config_files[@]}
    do
	rm -rf $2/$file
    done

    exit $exit_value
fi

echo "Invalid options"
echo ""
echo "Usage:"
echo ""
echo "  eclipse-reconciler <eclipse dir> <backup location> [reconciler parameters]"
echo "    Backsup configuration files in the given location, run the reconciler"
echo "    and restore the files if there is a problem at the end delete backup files."
echo "    Any parameters given after the first two are passed directly to the reconciler"

exit 1;