# BASH Functions

# Shell note pad
note () {
  # if file doesn't exist, create it
  if [[ ! -f $HOME/.notes ]]; then
      touch "$HOME/.notes"
  fi

  if ! (($#)); then
      # no arguments, print file
      cat "$HOME/.notes"
  elif [[ "$1" == "-c" ]]; then
      # clear file
      echo -n "Clear notes file? [Y/N] "
      read replace
      if [ "${replace}" = "Y" ] || [ "${replace}" = "y" ]; then
         echo "Emptying notes file..."
         printf "%s" > "$HOME/.notes"
         echo "Done."
      else
          echo "Notes file preserved."
      fi
  else
      # add all arguments to file
      echo -n $(date +"%F %T | ") >> "$HOME/.notes"
      printf "%s\n" "$*" >> "$HOME/.notes"
  fi
}

# tar/gzip a directory
# I use this before 'rm -rf'ing a directory I think is useless
# if nothing breaks after a predetermined amount of time, then the tar file is safe to delete
tardir() {
    #ensure $1 is a directory
    if [ ! -d "${1}" ]; then
        echo "$1 is not a directory. Aborting."
        return 1
    fi
    #strip trailing slash
    target="${1%/}"
    echo "Dir size: $(du -hs ${target})"
    tar czf "${target}".tar.gz "${target}"
    echo "Archive size: $(du -hs ${target}.tar.gz)"
}

# Replacement for 'for i in $(ls); do du -hs $i; done' that handles spaces
function dudir() {
    if ! (($#)); then
        dir=$(pwd)
    else
        dir="${1}"
    fi    
    # redefine $IFS
    o=$IFS
    IFS=$(echo -en "\n\b")
    for i in $(ls "${dir}"); do 
        du -hs "${i}"
    done
    # reset $IFS
    IFS=$o
}

# HAHA!  Weather in the terminal
weather() {
 if [ $(command -v curl) ]; then
   if ! (($#)); then
     curl wttr.in/44113
   else
     curl wttr.in/$1
   fi
 else
   echo "curl not installed. Aborting."
 fi
}

# Replaces "ps aux | grep <something>" with "psaux <something>". Shorter to type, more informational and doesn't include the command itself in the output.
psaux () { pgrep -f "$@" | xargs ps -fp 2>/dev/null; }

# mail a file
email() {
if ! (($#)); then
        echo "USAGE: email {filename} {email-address}"
    return 1
else
        efile=${1}
        eaddr=${2}
        echo "See Attached" | mail -s "File: ${efile}" -a ${efile} ${2}
fi
}