#!/usr/bin/env bash
print_help() {
  cat <<HELP
$(basename "$0"): A fast transfer for single files
 - Supports input pipes! (useful for gpg pipes)
 - 2x faster than scp, right around rsync speeds
 - Shows a progress bar!

Examples:
    $ scp_turbo orca dotfiles.tgz.gpg /dev/shm/dotfiles.tgz.gpg
    $ cat dotfiles.tgz.gpg | scp_turbo orca /dev/shm/dotfiles.tgz.gpg
    $ tar cz kattis | gpg -e -r emiliko@mami2.moe | scp_turbo orca /dev/shm/kattis.tgz.gpg
HELP

}

if [[ "$1" == --help || "$1" == -h ]]; then
  print_help
  exit 1
elif [[ $# -eq 2 ]]; then
  declare -r remote="$1"
  declare -r to="$2"

  pv | ssh -o ClearAllForwardings=yes "$remote" "cat > '$to'"
elif [[ $# -eq 3 ]]; then
  declare -r remote="$1"
  declare -r from="$2"
  declare -r to="$3"

  cat "$from" \
    | pv -s $(stat -c %s "$from") \
    | ssh -o ClearAllForwardings=yes "$remote" "cat > '$to'"
else
  print_help
  exit 2
fi