#! /bin/bash
#
# Download a file from the COMET validation input repository.  This first
#checks to see if the file is already available.  The command line
#arguments are:
#
# comet-get-validation-input <package> <file> <md5sum>
#
# <package> The name of the package that first uses this file.
#
# <file>    The name of the file to get.
#
# <cksum>   The checksum of the file calculated using cksum.
#

checkSum() {
   if [ -f $1 ]; then
     md5sum $1 | grep ^${2} > /dev/null
   else
     return 1
   fi
}

set -e

PACKAGE=$1; shift
FILE=$1; shift
SUM=$1; shift

# The location of the input files.
if [ ${COMETFILES}x == x ]; then
    COMETFILES=http://repo.nd280.org/nd280files/validate
fi

# Check if the file exists
if checkSum ${FILE} ${SUM}; then
    echo File is already available.
    exit 0
fi

# Get the file from the web.
wget -S -N ${COMETFILES}/${PACKAGE}/${FILE}

# Check that the file was gotten.
if [ ! -f ${FILE} ]; then
    echo NOT RUN
    exit 2
fi

# Check if the file was downloaded correctly.
if checkSum ${FILE} ${SUM} ; then
    echo File ok
else
    echo "Downloaded file does not match checksum."
    echo FAIL
    exit 1
fi