#!/bin/bash

if [ $# -eq 0 ]; then
    echo "No arguments supplied, using default values for CURRENT_RELEASE and PREVIOUS_RELEASE"
    CURRENT_RELEASE=R3.3
    PREVIOUS_RELEASE=R3.2
else
    CURRENT_RELEASE=$1
    PREVIOUS_RELEASE=$2
fi

echo $CURRENT_RELEASE
echo $PREVIOUS_RELEASE

find . -name "*.xmlv3" -print0 | while read -d $'\0' file
do
    if test -f "$file.$PREVIOUS_RELEASE"; then	        
        diff $file.$PREVIOUS_RELEASE $file.$CURRENT_RELEASE > $file.diff
    fi
done

rm diff.csv
touch diff.csv

find . -name "*.diff" -print0 | while read -d $'\0' file
do       
    if [ -s $file ]; then 
  	    echo "DIFFs exist in: $file"
  	    echo "$file" >> "diff.csv"
    else
        rm $file       
    fi  	
done