#!/bin/bash

Src=${1}
Days=${2}

if  [ "${Src}" == "" ]
then
    echo "Usage: $0 <source_dir> [<num_days>]"
    exit 1
fi
if  [ "${Days}" == "" ]
then
    Days=30
fi

declare -A Settings=()
Settings[Src]=${Src}
Settings[PruneDate]=$(date -d "${Days} days ago" '+%Y-%m-%d')

src=${Settings[Src]}
prune_date=${Settings[PruneDate]}

echo Before Pruning....
duf ${src}

echo "Finding files older than ${prune_date}..."
Cmd="find ${src} -type f ! -newermt \"${prune_date}\""
echo ${Cmd}
files=($(eval ${Cmd}))
echo "The following files will be removed:"
echo "===================================="
for f in $files ; do  echo $f; done
echo "===================================="
echo "Total files to be pruned: ${#files[*]}"

Cmd="${Cmd} -delete"
echo ${Cmd}
eval ${Cmd}

echo "Removing empty directories..."
Cmd="find ${src} -type d -empty -print -delete"
echo ${Cmd}
eval ${Cmd}

echo After Pruning....
duf ${src}

echo $0 Done