#!/usr/bin/env python3
import os, sys 
sys.path.append('/auto')
from   pet_misc  import *

if ( len(sys.argv)-1 < 1 ):
     print ( "Usage: filin bw" )
     exit  ( 1 )
else:
     gaco_filin = sys.argv[1]
     bw         = int(sys.argv[2])

rat = int(128/bw)
num_orig_if = 4
gaco_filout = gaco_filin.replace(".gac",("_%dMHz.gac" % bw))


buf = read_file ( gaco_filin )
out = []

for line in buf:
    if ( "Sta:" in line ):
          ifin_num  = int(line.split()[3])
          ifin_freq = float(line.split()[5])
          if ( ifin_num == 1 ):
               ifout_num = 0
          for k in range(0,rat):
              ifout_freq = ifin_freq + k*bw*1000000
              ifout_num = ifout_num + 1
              gain      = float(line.split()[7])
              if ( bw <= 1 ):
                   if ( ifout_num == 1 or ifout_num == rat*num_orig_if   ):
                        gain = 0.0
              if ( bw <= 16 ):
                   if ( ifout_num == 2 or ifout_num == rat*num_orig_if-1 ):
                        gain = 0.0
              out.append ( "Sta: %-8s IF: %3d Freq: %13.1f Gain:   %6.4f  Err:  %6.4f Nvis: %5d" % \
                           ( line.split()[1], ifout_num, ifout_freq, gain, \
                             float(line.split()[9]), int(line.split()[11]) ) )
          continue
    else:
          out.append(line)                       

(ret,err) = write_file ( out, gaco_filout )
check_err_exe ( ret, err, "write_file" )
print ( "Wrote file %s " % gaco_filout )