#!python3
'''
Created on Sep 21, 20-16
author: tpweis
file name: watcherfeeder.py
This function feeds files into a directory that is watched. (input argument 1)
This is a simple tool used for testing the watching
'''

import os, time
import subprocess
import sys
import shutil

def main():
    "function main"

    arglist = sys.argv[1:]
    if(len(arglist)< 1):
        print("Missing Watch Directory argument.  Try again")
        sys.exit(3)
    else:
        WATCHdir = arglist[0]

    if(len(arglist) < 2):
        print("Missing seed file argument.  Try again")
        sys.exit(4)
    else:
        SEEDfile =arglist[1]
    if(len(arglist) < 3):
        print("Missing replication count argument.  Defaulting to 3")
        rep_count = 3
    else:
        rep_count =int(arglist[2])
        if rep_count > 10:
            print("Maximum replication count is 10")
            rep_count = 10
        elif rep_count < 1:
            print("Minimum replication count is 1")
            rep_count = 1

    # Now ensure that both the directory and file exist. 
    if not os.path.isdir(WATCHdir):
        print("First arg (watcher directory) " + WATCHdir + " is not a valid directory")
        sys.exit(5)
    if not os.path.isfile(SEEDfile):
        print("Second arg (processed directory) " + SEEDfile + " is not a valid file name")
        sys.exit(6)

    print("Place " + str(rep_count) + " copy of " + SEEDfile + " into directory " + WATCHdir)

    # beging the copying
    filename,sep,ext = SEEDfile.rpartition('.')
    for copy_count in range (rep_count):
        # fiddle with the file name so that we can produce numbered copies
        newfile = WATCHdir + "/" + filename + str(copy_count) + sep + ext
        print(newfile)
        shutil.copy(SEEDfile,newfile)

    sys.exit(0)

    

if __name__ == '__main__':
    # execute only if run as a script
    main()