#!/bin/bash

# This script performs a "soft delete" of given files. Any files
# specified in the arguments to the script will be compressed with
# the tar command and moved into the ~/TRASH directory. Any files
# in the TRASH directory that haven't been touched in 2 days will
# be permanently deleted.

# Create the TRASH directory if it does not exist.
trash=~/TRASH
if [ ! -e $trash ]; then
  mkdir $trash
elif [ ! -d $trash ]; then
  echo "$0: error: $trash is not a directory"; exit 1
fi

# For each argument, check it exists, then tar it, move it, and
# delete the original.
while [ $# -gt 0 ]; do
  if [ ! -e $1 ]; then
    echo "$0: error: tried to delete file that does not exist: $1"
    shift
    continue
  fi
  tarname="$1.tar"
  tar -cf "$tarname" "$1"
  mv "$tarname" $trash
  rm -rf "$1"
  shift
done

# Go through the ~/TRASH directory and remove files older than
# 2 days.
now=`date +%s`
cd $trash
for f in `ls`; do
  fileage=$(stat -c '%Y' "$f")
  if [ $((now-fileage)) -gt $((60*60*24*2)) ]; then
    rm -rf "$f"
  fi
done