bin-by-date

#!/bin/bash
#this bash script will sort a collection of files, with specified extensions, into a directory structure as follows
# date1
#  hour1
#  hour2
#  hour3
# date1
#  hour1
#  hour2
#  hour3
#it will only create directories that will have files in them


#Sean Begley
#begleysm@gmail.com
#https://steamforge.net/wiki
#https://github.com/begleysm/ipcam-ftp-tools
#2019-07-17

#first parameter ($1) = path to source directory to be parsed
#second paramter ($2) = path to destination directory for files to be put in (sorted)
#third parameter ($3) = comma delimited list of extensions to sort
#fourth parameter ($4) = mode: [copy, move, move-delete]
#                        1.) if set to "copy" then files will be copied from the source dir
#                            to the destination dir and the source dir will be left unmodified
#                        2.) if set to "move" then files will be moved from the source dir
#                            to the destintion dir but any other files not moved will be left
#                            unmodified
#                        3.) if set to "move-delete" then files will be moved from the source dir
#                            to the destination dir and then all other files in the source dir will
#                            be deleted

#example call: ./bin-by-date /path/to/input/ /path/to/output/ jpg,mp4 move-delete

#ensure that $4 has a valid value
if ! [[ $4 = "copy" || $4 = "move" || $4 = "move-delete" ]]; then
	echo "Parameter 4 \"$4\" invalid.  Please enter \"copy\", \"move\", or \"move-delete\""
	exit 1
fi

#create list of extensions from $3
IFS_orig=$IFS
IFS=',' extensions=( $3 )
#command="shopt -s nullglob dotglob; find $1 "
command="find $1 "
for extension in "${extensions[@]}"
do
  command+="-name \"*.$extension\" -or "
done
command=${command::-5}
IFS=${IFS_orig}


#grab a list of all files with extensions from $3
files=$(eval $command)

#ensure directory contains our desired extensions files before proceeding
if (( ${#files} ))
then
  #get a list of dates (YYYY-MM-DD), file paths, and filenames represented by the image/video files
  for each in ${files}
  do
    date=$(date +%Y-%m-%d-%H -r "$each");
    _DATES+=($date);
    FILES+=($each);
    FILENAMES+=(${each##*/});
  done

  #create a folder structure
  DATES=$(printf "%s\n" "${_DATES[@]}" | sort -u);
  for date in ${DATES[@]}; do

    #create YYYY-MM-DD dir if it doesnt exist
    if [ ! -d "$2/${date:0:10}" ]; then
      mkdir "$2/${date:0:10}"
    fi

    #create YYYY-MM-DD/HH dir if it doesnt exist
    if [ ! -d "$2/${date:0:10}/${date:11:2}" ]; then
      mkdir "$2/${date:0:10}/${date:11:2}"
    fi
  done

  #move the files into the new folder structure
  for ((i=0; i<${#FILES[*]}; i++));
  do
    date_dir=$(date +%Y-%m-%d -r "${FILES[i]}")
    hour_dir=$(date +%H -r "${FILES[i]}")
    
    #check if we should copy or move files
    if [[ $4 = "move"  || $4 = "move-delete" ]]; then
      mv ${FILES[$i]} $2/$date_dir/$hour_dir/"${FILENAMES[$i]}"
    elif [ $4 = "copy" ]; then
      cp ${FILES[$i]} $2/$date_dir/$hour_dir/"${FILENAMES[$i]}"
    fi
  done
  
fi

#check to see if we should delete remaining files in the source directory
  if [[ $4 = "move-delete" ]]; then
    rm -r $1/*
  fi
  
exit 0