#! /bin/csh -f

echo "S1_deramp_TOPS_slave: Script to deramp a Sentinel-1 TOPS mode burst SLC co-registered slave SLC v1.1 19-Jun-2015 uw"
echo " "
if ($#argv < 3)then
  echo "usage: S1_deramp_TOPS_slave <SLC_tab_slave> <SLC_ID_slave> <SLC_tab_ref> [RLK] [AZLK] [cleaning]"
  echo "       SLC_tab_slave     (input) SLC_tab of S1 TOPS burst SLC slave (that is co-registered to reference) (e.g. 20141126.RSLC_tab)"
  echo "       SLC_ID_slave      (input) ID for the S1 TOPS burst SLC slave files (e.g. 20141126)"
  echo "       SLC_tab_ref       (input) SLC_tab of S1 TOPS burst SLC reference (e.g. 20141015.SLC_tab)"
  echo "       RLK               number of range looks in the output MLI image (default=10)"
  echo "       AZLK              number of azimuth looks in the output MLI image (default=2)"
  echo "       cleaning          flag to indicate if deramped sub-swath SLCs (*.IW1.slc.deramp etc.) shall be deleted  (default = 1 --> deleted,  0: not deleted)"
  echo " "
  echo "       The filenames for the deramped data and the phase ramp are generated based on SLC_tab_slave"
  echo "       20141126.RSLC_tab --> 20141126.RSLC_tab.deramp"
  echo "       20141126.IW1.rslc --> 20141126.IW1.rslc.deramp, 20141126.IW1.rslc.deramp.par,"
  echo "                             20141126.IW1.rslc.deramp.TOPS_par"
  echo "       20141126          --> 20141126.rslc.deramp, 20141126.rslc.deramp.par"
  exit
endif

# History:
# 23-Jan-2015: initial version
# 23-Jan-2015: replace 0.0 values in deramp phases with 0.0000001

#defaults for input parameters
set RLK = "10"
set AZLK = "2"
set cleaning = "1"   # 1: yes

set SLC_tab_slave = $1
set SLC_ID_slave = $2
set SLC_tab_ref = $3
set SLC_tab_slave_deramp = $1.deramp

if ($#argv >= 4) set RLK = $4
if ($#argv >= 5) set AZLK = $5
if ($#argv >= 6) set cleaning = $6

echo "test if required input/output files and directories exist"
if (-e "$1" == 0) then 
  echo "ERROR: SLC_tab_slave file ($1) does not exist"; exit(-1)
endif 

if (-e "$3" == 0) then 
  echo "ERROR: SLC_tab_slave_ref file ($3) does not exist"; exit(-1)
endif 

#######################################################################################################

echo "test if deramp phases for reference exist - if not then calculate those"

if (1) then # determine the parameters in SLC_tab_slave_deramp
  set tmp=`awk '(NR>=1){print $1}' $SLC_tab_ref`
  set nrows=`echo "$tmp" | awk '(NR==1){print NF}'`
  echo "SLC_tab_ref has $nrows rows"

  set dph_exists = "1"   #  deramp phases for reference exist 
  if ("$nrows" >= "1") then
    set SLC=`awk '(NR==1){print $1}' $SLC_tab_ref `
    set SLC_par=`awk '(NR==1){print $2}' $SLC_tab_ref `
    set TOPS_par=`awk '(NR==1){print $3}' $SLC_tab_ref `
    # echo "$SLC $SLC_par $TOPS_par"
    set SLC_deramp = "$SLC.deramp"
    set SLC_deramp_par = "$SLC.deramp.par"
    set TOPS_par_deramp = "$SLC.deramp.TOPS_par"
    set dph = "$SLC.deramp.dph"
    echo "$SLC_deramp $SLC_deramp_par $TOPS_par_deramp $dph"
    if ( -e "$dph" == "0" )set dph_exists = "0"  
  endif
  if ("$nrows" >= "2") then
    set SLC=`awk '(NR==2){print $1}' $SLC_tab_ref `
    set SLC_par=`awk '(NR==2){print $2}' $SLC_tab_ref `
    set TOPS_par=`awk '(NR==2){print $3}' $SLC_tab_ref `
    # echo "$SLC $SLC_par $TOPS_par"
    set SLC_deramp = "$SLC.deramp"
    set SLC_deramp_par = "$SLC.deramp.par"
    set TOPS_par_deramp = "$SLC.deramp.TOPS_par"
    set dph = "$SLC.deramp.dph"
    echo "$SLC_deramp $SLC_deramp_par $TOPS_par_deramp $dph"
    if ( -e "$dph" == "0" )set dph_exists = "0"  
  endif
  if ("$nrows" >= "3") then
    set SLC=`awk '(NR==3){print $1}' $SLC_tab_ref `
    set SLC_par=`awk '(NR==3){print $2}' $SLC_tab_ref `
    set TOPS_par=`awk '(NR==3){print $3}' $SLC_tab_ref `
    # echo "$SLC $SLC_par $TOPS_par"
    set SLC_deramp = "$SLC.deramp"
    set SLC_deramp_par = "$SLC.deramp.par"
    set TOPS_par_deramp = "$SLC.deramp.TOPS_par"
    set dph = "$SLC.deramp.dph"
    echo "$SLC_deramp $SLC_deramp_par $TOPS_par_deramp $dph"
    if ( -e "$dph" == "0" )set dph_exists = "0"  
  endif
endif

if ( "$dph_exists" == "1" ) then
  echo "all required phase ramp files for the reference scene exist"
else
  echo "not all required phase ramp files for the reference scene exist"
  echo "required phase ramp files for the reference scene are generated"
  echo "S1_deramp_TOPS_reference $SLC_tab_ref"
  S1_deramp_TOPS_reference $SLC_tab_ref
  set dph_exists = "1"  
endif

#######################################################################################################

# determine the parameters in SLC_tab_slave_deramp and the deramped SLCs

if (1) then 
  set tmp=`awk '(NR>=1){print $1}' $SLC_tab_slave`
  set nrows=`echo "$tmp" | awk '(NR==1){print NF}'`
  echo "SLC_tab_ref has $nrows rows"

#####################
  if ("$nrows" >= "1") then    # for first line of $SLC_tab_slave
    set SLC=`awk '(NR==1){print $1}' $SLC_tab_slave `
    set SLC_par=`awk '(NR==1){print $2}' $SLC_tab_slave `
    set TOPS_par=`awk '(NR==1){print $3}' $SLC_tab_slave `
    # echo "$SLC $SLC_par $TOPS_par"
    set SLC_deramp = "$SLC.deramp"
    set SLC_deramp_par = "$SLC.deramp.par"
    set TOPS_par_deramp = "$SLC.deramp.TOPS_par"
    set SLC_ref=`awk '(NR==1){print $1}' $SLC_tab_ref `
    set SLC_ref_par=`awk '(NR==1){print $2}' $SLC_tab_ref `
    set TOPS_par_deramp_ref=`awk '(NR==1){print $3}' $SLC_tab_ref `
    set dph = "$SLC_ref.deramp.dph"
    echo "$SLC_deramp $SLC_deramp_par $TOPS_par_deramp $dph"
    echo "$SLC_deramp $SLC_deramp_par $TOPS_par_deramp" > $SLC_tab_slave_deramp

    create_diff_par $SLC_par - tmp.diff_par 1 0
    set width = `awk '$1 == "range_samples:" {print $2}' $SLC_par` 
    # replace 0.0 in $dph with 0.0000001
    replace_values $dph 0.0 0.0000001 $dph.tmp $width 0 2

    echo "sub_phase $SLC $dph.tmp tmp.diff_par $SLC_deramp 1 0"
    sub_phase $SLC $dph.tmp tmp.diff_par $SLC_deramp 1 0

    /bin/rm tmp.diff_par
    /bin/rm $dph.tmp
    /bin/cp $SLC_ref_par $SLC_deramp_par
    /bin/cp $TOPS_par_deramp_ref $TOPS_par_deramp
  endif

#####################
  if ("$nrows" >= "2") then   # for second line of $SLC_tab_slave
    set SLC=`awk '(NR==2){print $1}' $SLC_tab_slave `
    set SLC_par=`awk '(NR==2){print $2}' $SLC_tab_slave `
    set TOPS_par=`awk '(NR==2){print $3}' $SLC_tab_slave `
    # echo "$SLC $SLC_par $TOPS_par"
    set SLC_deramp = "$SLC.deramp"
    set SLC_deramp_par = "$SLC.deramp.par"
    set TOPS_par_deramp = "$SLC.deramp.TOPS_par"
    set SLC_ref=`awk '(NR==2){print $1}' $SLC_tab_ref `
    set SLC_ref_par=`awk '(NR==2){print $2}' $SLC_tab_ref `
    set TOPS_par_deramp_ref=`awk '(NR==2){print $3}' $SLC_tab_ref `
    set dph = "$SLC_ref.deramp.dph"
    echo "$SLC_deramp $SLC_deramp_par $TOPS_par_deramp $dph"
    echo "$SLC_deramp $SLC_deramp_par $TOPS_par_deramp" >> $SLC_tab_slave_deramp

    create_diff_par $SLC_par - tmp.diff_par 1 0
    set width = `awk '$1 == "range_samples:" {print $2}' $SLC_par` 
    # replace 0.0 in $dph with 0.0000001
    replace_values $dph 0.0 0.0000001 $dph.tmp $width 0 2

    echo "sub_phase $SLC $dph.tmp tmp.diff_par $SLC_deramp 1 0"
    sub_phase $SLC $dph.tmp tmp.diff_par $SLC_deramp 1 0

    /bin/rm tmp.diff_par
    /bin/rm $dph.tmp
    /bin/cp $SLC_ref_par $SLC_deramp_par
    /bin/cp $TOPS_par_deramp_ref $TOPS_par_deramp
  endif

#####################
  if ("$nrows" >= "3") then   # for third line of $SLC_tab_slave
    set SLC=`awk '(NR==3){print $1}' $SLC_tab_slave `
    set SLC_par=`awk '(NR==3){print $2}' $SLC_tab_slave `
    set TOPS_par=`awk '(NR==3){print $3}' $SLC_tab_slave `
    # echo "$SLC $SLC_par $TOPS_par"
    set SLC_deramp = "$SLC.deramp"
    set SLC_deramp_par = "$SLC.deramp.par"
    set TOPS_par_deramp = "$SLC.deramp.TOPS_par"
    set SLC_ref=`awk '(NR==3){print $1}' $SLC_tab_ref `
    set SLC_ref_par=`awk '(NR==3){print $2}' $SLC_tab_ref `
    set TOPS_par_deramp_ref=`awk '(NR==3){print $3}' $SLC_tab_ref `
    set dph = "$SLC_ref.deramp.dph"
    echo "$SLC_deramp $SLC_deramp_par $TOPS_par_deramp $dph"
    echo "$SLC_deramp $SLC_deramp_par $TOPS_par_deramp" >> $SLC_tab_slave_deramp

    create_diff_par $SLC_par - tmp.diff_par 1 0
    set width = `awk '$1 == "range_samples:" {print $2}' $SLC_par` 
    # replace 0.0 in $dph with 0.0000001
    replace_values $dph 0.0 0.0000001 $dph.tmp $width 0 2

    echo "sub_phase $SLC $dph.tmp tmp.diff_par $SLC_deramp 1 0"
    sub_phase $SLC $dph.tmp tmp.diff_par $SLC_deramp 1 0

    /bin/rm tmp.diff_par
    /bin/rm $dph.tmp
    /bin/cp $SLC_ref_par $SLC_deramp_par
    /bin/cp $TOPS_par_deramp_ref $TOPS_par_deramp
  endif

endif

if (1) then   # generate SLC mosaic of deramped slave SLC
  echo "SLC_mosaic_S1_TOPS $SLC_tab_slave_deramp $SLC_ID_slave.rslc.deramp  $SLC_ID_slave.rslc.deramp.par $RLK $AZLK 0"
  SLC_mosaic_S1_TOPS $SLC_tab_slave_deramp $SLC_ID_slave.rslc.deramp  $SLC_ID_slave.rslc.deramp.par $RLK $AZLK 0
endif


#######################################3

# cleaning

if ( "$cleaning" ) then
  set tmp=`awk '(NR>=1){print $1}' $SLC_tab_slave_deramp`
  set nrows=`echo "$tmp" | awk '(NR==1){print NF}'`
  echo "SLC_tab_slave_deramp has $nrows rows"

  if ("$nrows" >= "1") then
    set SLC=`awk '(NR==1){print $1}' $SLC_tab_slave_deramp `
    set SLC_par=`awk '(NR==1){print $2}' $SLC_tab_slave_deramp `
    set TOPS_par=`awk '(NR==1){print $3}' $SLC_tab_slave_deramp `
    /bin/rm "$SLC $SLC_par $TOPS_par"
  endif
  if ("$nrows" >= "2") then
    set SLC=`awk '(NR==2){print $1}' $SLC_tab_slave_deramp `
    set SLC_par=`awk '(NR==2){print $2}' $SLC_tab_slave_deramp `
    set TOPS_par=`awk '(NR==2){print $3}' $SLC_tab_slave_deramp `
    /bin/rm "$SLC $SLC_par $TOPS_par"
  endif
  if ("$nrows" >= "3") then
    set SLC=`awk '(NR==3){print $1}' $SLC_tab_slave_deramp `
    set SLC_par=`awk '(NR==3){print $2}' $SLC_tab_slave_deramp `
    set TOPS_par=`awk '(NR==3){print $3}' $SLC_tab_slave_deramp `
    /bin/rm "$SLC $SLC_par $TOPS_par"
  endif
endif

#######################################3


echo ""
echo "deramped TOPS mosaic SLC and SLC_par: $SLC_ID_slave.rslc.deramp  $SLC_ID_slave.rslc.deramp.par"
echo "WARNING: $SLC_ID_slave.rslc.deramp.par contains the state vectors of the reference"

exit