#!/bin/bash


function usage() {
  cat << EOF
Usage: opscp [OPTIONS] local remote

Options:
  --version             show program's version number and exit
  --help                show this help message and exit
  -l USER, --user=USER  username (OPTIONAL)
  -p PAR, --par=PAR     max number of parallel threads (OPTIONAL)
  --errdir=ERRDIR       output directory for stderr files (OPTIONAL)
  --outdir=OUTDIR       output directory for stdout files (OPTIONAL)
  -e ENV, --env ENV     Which environment to use
  -t HOST_TYPE, --host-type HOST_TYPE
                        Which host type to use
  --list-host-types     List all of the host types
  -O OPTION, --option=OPTION
                        SSH option (OPTIONAL)
  -v, --verbose         turn on warning and diagnostic messages (OPTIONAL)
  -A, --askpass         Ask for a password (OPTIONAL)
  -x ARGS, --extra-args=ARGS
                        Extra command-line arguments, with processing for
                        spaces, quotes, and backslashes
  -X ARG, --extra-arg=ARG
                        Extra command-line argument
  -r, --recursive       recusively copy directories (OPTIONAL)

Example: opscp -t ex-srv -e stg -l irb2 foo.txt /home/irb2/foo.txt

EOF
}

if [ $# -eq 0 ] || [ "$1" == "--help" ]
then
  usage
  exit 1
fi

PSCP_PAR=200
USER=root
PSCP_OPTIONS=""
ENV=""
HOST_TYPE=""
while [ $# -gt 0 ] ; do
  if [ "$1" == "-t" -o "$1" == "--host-type" ] ; then
    shift # get past the option
    HOST_TYPE=$1
    shift # get past the value of the option

  elif [ "$1" == "-e" ] ; then
    shift # get past the option
    ENV=$1
    shift # get past the value of the option

  elif [ "$1" == "-p" -o "$1" == "--par" ] ; then
    shift # get past the option
    PSCP_PAR=$1
    shift # get past the value of the option

  elif [ "$1" == "-l" -o "$1" == "--user" ] ; then
    shift # get past the option
    USER=$1
    shift # get past the value of the option

  elif [ "$1" == "--list-host-types" ] ; then
    ohi --list-host-types
    exit 0

  elif [ "$1" == "-h" -o "$1" == "--hosts" -o "$1" == "-H" -o "$1" == "--host" ] ||
       [ "$1" == "-o" ] ; then
    echo "ERROR: unknown option $1"
    exit 20

  else
    if [ "${1:0:1}" == "-" ] ; then
      # It's an option, don't quote
      PSCP_OPTIONS="$PSCP_OPTIONS $1"
    else
      PSCP_OPTIONS="$PSCP_OPTIONS '$1'"
    fi
    shift # Get past this option
  fi
done

if [ -z "$ENV" ]
then
  echo
  echo "-e is a required paramemeter"
  echo
  exit 10
fi

if [ -z "$HOST_TYPE" ]
then
  echo
  echo "-t is a required paramemeter"
  echo
  exit 15
fi

PSCP_OPTIONS="-t 0 -p $PSCP_PAR -l $USER -h <(ohi -t $HOST_TYPE -e $ENV 2>/dev/null) $PSCP_OPTIONS"


# See if the ohi options are valid
ohi -t $HOST_TYPE -e $ENV &> /dev/null
ECODE=$?
if [ $ECODE -ne 0 ] ; then
  echo
  echo "ERROR: ohi failed with exit code $ECODE"
  echo
  echo "This is usually caused by a bad value passed for host-type or environment."
  echo
  exit 25
fi

echo
echo "Running: pscp.pssh $PSCP_OPTIONS"
echo

eval pscp.pssh $PSCP_OPTIONS