#!/bin/bash

# Script to mirror Look Up Tables (LUTs) that are required in order
#  to run the CSPP SDRs software.
# 
# It is meant to by called by another script executed via cron 
#  whick checks to see if it is already running, in case one gets stuck
#  and they start to back up.  This script should be run about once
#  per week.  It uses 'lftp' to mirror the LUT ancillary data directory
#  from http://jpssdb.ssec.wisc.edu/ancillary/LUTS , and will only
#  grab any new files that have been updated or changed since the last
#  update.
#
#  Written by Kathleen Strabala UW/SSEC    July 2012
# 
#
if [ -z "${CSPP_SDR_HOME}" ] ; then
    echo "Please set CSPP_SDR_HOME "
    exit 1
fi

# See if local and remote ancillary directories have been set
if [[ -z $CSPP_RT_SDR_LUTS ]]; then
   echo "The CSPP_RT_SDR_LUTS directory has not been set. Defaulting to $CSPP_SDR_HOME/anc/cache/luts"
   export CSPP_RT_SDR_LUTS=${CSPP_SDR_HOME}/anc/cache/luts
fi

if [[ -z $JPSS_REMOTE_ANC_DIR ]]; then
   export JPSS_REMOTE_ANC_DIR=http://jpssdb.ssec.wisc.edu/ancillary/LUTS_V_1_5/
fi

# Use lftp to download only the files that are new or updated 
echo ""
echo "Begin CSPP LUT update on " `date`
echo ""


FILE_TYPE="-I *.*.*"
lftp -c "mirror --verbose --only-newer --parallel=4 $JPSS_REMOTE_ANC_DIR $FILE_TYPE $CSPP_RT_SDR_LUTS"
if [ $? -ne 0 ] ; then
  echo ""
  echo "CSPP BLOB Look-up-table update was not successful."
  exit 1
fi

FILE_TYPE="-I *.asc"
lftp -c "mirror --verbose --only-newer --parallel=4 $JPSS_REMOTE_ANC_DIR $FILE_TYPE $CSPP_RT_SDR_LUTS"
if [ $? -ne 0 ] ; then
  echo ""
  echo "CSPP ASCII Look-up-table update was not successful."
  exit 1
fi

echo "CSPP Look-up-table update completed."

exit 0