#!/bin/bash

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

if [ -z "$Days" ] || [ -z "$Src" ]; then
    echo "Usage: $0 <source_dir> <num_days>"
    exit 1
fi

# Add / if Src does not have it (symlinks)
if [ "${Src: -1}" != "/" ]; then
    Src="${Src}/"
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 "Finding files older than ${prune_date}..."
Cmd="find ${src} -type f ! -newermt \"${prune_date}\""
echo ${Cmd}
files=($(eval ${Cmd}))
total_files=${#files[*]}

if [[ ${total_files} == 0 ]]
then
    echo "No files found to be pruned. Bye..."
    exit 0
fi

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

echo "The following files will be removed:"
echo "===================================="
for f in $files ; do  ls -l $f; done
echo "===================================="
echo "Total files to be pruned: ${total_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