#!/bin/sh

# by signal file from sondemod triggered almanach download daemon
# start in sondemod work dir

ALMFN="e.txt"
SIGFN="getalmanach"
TEMP="/tmp";
EXT=".Z";

while true; do
  if [ -e $SIGFN ] || ! [ -e $TEMP/$ALMFN ] ; then
    DAY=`date -u +%j`
    YEAR=`date -u +%y`
    echo day:$DAY year:$YEAR
    FN=brdc`echo -n $DAY`0.`echo -n $YEAR`n
    FNU=BRDC`echo -n $DAY`0.`echo -n $YEAR`n
    URL=ftp://igs.bkg.bund.de/IGS/BRDC/$(date +%Y)/$(date +%j)/brdc$(date +%j)0.$(date +%y)n.gz
    PD=$PWD
    cd $TEMP
    rm -f $TEMP/$FN $TEMP/$FN.gz $TEMP/$FN$EXT
#    wget http://qz-vision.jaxa.jp/USE/archives/ephemeris//20$YEAR/$FN
#    if [ -s $TEMP/$FN ] ; then
#      echo jaxa ok
#    else

#echo ftp://www.ngs.noaa.gov/cors/rinex/20$YEAR/$DAY/$FN.gz
#     wget ftp://www.ngs.noaa.gov/cors/rinex/20$YEAR/$DAY/$FN.gz
      wget $URL
#     wget ftp://alt.ngs.noaa.gov/cors/rinex/20$YEAR/$DAY/$FN.gz
#    if [ -s $TEMP/$FN.gz ] ; then
#      echo noaa alt ok
#      gunzip $TEMP/$FN.gz
#    wget ftp://cddis.gsfc.nasa.gov/gnss/data/daily/20$YEAR/brdc/$FN$EXT
    if [ -s $TEMP/$FN.gz ] ; then
      echo bund ok
      gunzip $TEMP/$FN.gz

    elif [ -s $TEMP/$FN$EXT ] ; then
      echo noaa alt ok
      gunzip $TEMP/$FN$EXT

    else


      wget ftp://geodesy.noaa.gov/cors/rinex/20$YEAR/$DAY/$FN.gz
      if [ -s $TEMP/$FN.gz ] ; then
        echo noaa ok
        gunzip $TEMP/$FN.gz
      fi



#        wget ftp://igs.bkg.bund.de/IGS/BRDC/20$YEAR/$DAY/$FN.Z
#        if [ -s $TEMP/$FN.Z ] ; then
#          echo bund ok
#          gunzip $TEMP/$FN.Z




#        else
#          wget ftp://ftp.glonass-iac.ru/MCC/BRDC/20$YEAR/$FNU
#          if [ -s $TEMP/$FNU ] ; then
#            echo ru ok
#            mv $TEMP/$FNU $TEMP/$FN

    fi

    cd $PD 

    if [ -s $TEMP/$FN ] ; then
      mv $TEMP/$FN $TEMP/$ALMFN
      rm -f $SIGFN
      if [ -e $SIGFN ] ; then
        echo getalmanach file not deletable
        exit
      fi
      sleep 1800
    else 
      echo download failed
      sleep 300
    fi
  else
    sleep 30
  fi 
done