#!/usr/bin/env bash
rm -rf ./logs-res
cp -r ./logs ./logs-res
cd ./logs-res/
reset

echo "Pre modif";
grep ".*" ./*
ls -la

#regex for numbers only
NUMBER='^[0-9]+$'

#filelist sorted descending by number suffix
FILELIST=$(ls *.log* |sort -t. -nk3 -r );

for FILENAME in $FILELIST; do

echo "Op: $FILENAME."

#test if filename has number as the suffix
HASNUM=$(echo $FILENAME | awk -F '[_.]' '{ print $3 }')

# if a file has no numeric suffix rename to .1 and touch new file
if ! [[ $HASNUM =~ $NUMBER ]]; then
  echo "Found no num suffix. HASNUM is $HASNUM"
  echo "Moving $FILENAME to ${FILENAME}.1"
  mv $FILENAME ${FILENAME}.1
  echo "Creating $FILENAME"
  echo " autocreated $FILENAME" > $FILENAME

else
  echo "Found num suffix $HASNUM filename $FILENAME"
  let "HASNUM++"
  echo "Post increase HASNUM is $HASNUM"
  BASE=$(echo $FILENAME | awk -F '[_.]' '{ print $1 "." $2}')
  echo "Built BASE as $BASE"
  echo "Moving $FILENAME to ${BASE}.${HASNUM}"
  mv $FILENAME ${BASE}.${HASNUM}

fi



echo "----------------------------------"

done


echo "Post modif";
grep "." ./*
ls -la