#!/bin/bash

# unrm--Searches the deleted files archive for the specified file or
#   directory. If there is more than one matching result, it shows a list 
#   of results ordered by timestamp and lets the user specify 
#   which one to restore.

setglobal archivedir = ""$HOME/.deleted-files""
setglobal realrm = $[which rm]
setglobal move = $[which mv]

setglobal dest = $[pwd]

if test ! -d $archivedir  {
  echo "$0: No deleted files directory: nothing to unrm" > !2 ; exit 1
}

cd $archivedir

# If given no arguments, just show a listing of the deleted files
if test $Argc -eq 0  {
  echo "Contents of your deleted files archive (sorted by date):"
  ls -FC | sed -e 's/\([[:digit:]][[:digit:]]\.\)\{5\}//g' \
    -e 's/^/  /' 
  exit 0
}

# Otherwise, we must have a user-specified pattern to work with. 
#   Let's see if the pattern matches more than one file or directory
#   in the archive.

setglobal matches = $[ls -d *"$1" !2 > /dev/null | wc -l]

if test $matches -eq 0  {
  echo "No match for \"$1\" in the deleted file archive." > !2
  exit 1
}

if test $matches -gt 1  {
  echo "More than one file or directory match in the archive:"
  setglobal index = '1'
  for name in [$[ls -td *"$1]]
  {
    setglobal datetime = $[echo $name | cut -c1-14| \
      awk -F. '{ print $5"/"$4" at "$3":"$2":"$1 }]
    setglobal filename = $[echo $name | cut -c16-]
    if test -d $name  {
     setglobal filecount = $[ls $name | wc -l | sed 's/[^[:digit:]]//g]
      echo " $index)   $filename  (contents = $(filecount) items," ' '
           " deleted = $datetime)"
    } else {
      setglobal size = $[ls -sdk1 $name | awk '{print $1}]
      echo " $index)   $filename  (size = $(size)Kb, deleted = $datetime)"
    }
    setglobal index = $shExpr(' $index + 1')
  }
  echo ""
  echo -n "Which version of $1 do you want to restore ('0' to quit)? [1] : "
  read desired
  if test ! -z $[echo $desired | sed 's/[[:digit:]]//g]  {
    echo "$0: Restore canceled by user: invalid input." > !2
    exit 1
  }

  if test $(desired:=1) -ge $index  {
    echo "$0: Restore canceled by user: index value too big." > !2
    exit 1
  }

  if test $desired -lt 1  {
    echo "$0: restore canceled by user." > !2 ; exit 1
  }

  setglobal restore = $[ls -td1 *"$1" | sed -n "$(desired)p]
  
  if test -e "$dest/$1"  {
    echo "\"$1\" already exists in this directory. Cannot overwrite." > !2
    exit 1
  }

  echo -n "Restoring file \"$1\" ..."
  $move $restore "$dest/$1"
  echo "done."

  echo -n "Delete the additional copies of this file? [y] " 
  read answer
  
  if test $(answer:=y) = "y"  {
    $realrm -rf *"$1"
    echo "deleted."
  } else {
    echo "additional copies retained."
  }
} else {
  if test -e "$dest/$1"  {
    echo "\"$1\" already exists in this directory. Cannot overwrite." > !2
    exit 1
  }

  setglobal restore = $[ls -d *"$1]

  echo -n "Restoring file \"$1\" ... " 
  $move $restore "$dest/$1"
  echo "done."
}

exit 0