"""Copy latest glider bindary data (bd) files received in specific glider from-glider directory to localuser realtime directory.


   Usage: python sbdcopy.py glidername filetype

      input path
         /var/opt/gmc/gliders/{glider}/from-glider/*.{filetype}
      output path
         /home/localuser/realtime/{glider}/{filetype}/*.{filetype}
         
   Inputs:
     glidername [ramses | pelagia]
     filetype [sbd | tbd | dbd | ...]

   Example usage:   python dbdcopy.py ramses sbd
         /var/opt/gmc/gliders/ramses/sbd/*.sbd
         all new *.sbd will be copied to:
         /home/localuser/realtime/ramses/sbd/*.sbd 
      
"""

import sys
import os
import glob
import shutil
import errno

if __name__ == "__main__":
    try:
        glider = sys.argv[1]
        filetype = sys.argv[2]

        gmc_dir = "/var/opt/gmc/gliders"
        local_dir = "/home/localuser/realtime"

        # from-glider (fg)
        fg_dir = os.path.join(gmc_dir, glider,"from-glider") 
        fg_files= glob.glob1(fg_dir, "*." + filetype)
        # localuser 
        bd_dir = os.path.join(local_dir, glider, filetype)
        bd_files = glob.glob1(bd_dir, "*." + filetype)
 
        s = set(fg_files) - set(bd_files)
        files = list(s)
        files.sort()
        if files:
            for f in files:
                infile = os.path.join(fg_dir, f)
                outfile = os.path.join(bd_dir, f)
                rc = shutil.copy2(infile, outfile) # copy file and file stat 
                if rc:
                    raise IOError("shutil.copy2 return code: " + str(rc))
                else:
                    print " ... Copied ", infile
        else:
            print "Nothing to copy"
            
    except:
        print __doc__