#!python3
# Created 18 Sep 2019
# @author: andreas

""" Module: Main Template  """

from argparse import ArgumentParser
import logging
import sys
import os
import hashlib
from pathlib import Path
import datetime as dt
import pickle
import shutil

LOG = logging.getLogger()
PROXY_DIR = "."

   
def cli(argv=None):
    # command line interface
    if argv is None:
        argv = sys.argv
    LOG.info("%s %s", os.path.basename(argv[0]), " ".join(argv[1:]))
    parser = ArgumentParser(description="Module Template")
    parser.add_argument("--src")
    parser.add_argument("--dest")
    args = parser.parse_args(argv[1:])
    argd = vars(args)
    # arguments
    for k, v in argd.items(): 
        print(k, v)
    # feature
    srcd = build_hashdict(Path(args.src))
    destd = build_hashdict(Path(args.dest))
    srch = set(srcd.keys())
    desth = set(destd.keys())
    xor_hashes = srch ^ desth
    for h in xor_hashes:
        if h in srcd:
            print(srcd[h])
    for h in xor_hashes:
        if h in destd:
            print(destd[h])
    LOG.info("done")
    return 0


def build_hashdict(base):
    files_by_hash = dict()
    for fp in base.glob("**/*.jpg"):
        h = file_hash(fp)
        files_by_hash[h] = fp
    return files_by_hash    
  

def file_hash(filepath):
    h = hashlib.sha256()
    with filepath.open("rb") as fh:
        h.update(fh.read())
    return h.digest()


if __name__ == "__main__":
    logging.Formatter.default_time_format = '%H:%M:%S'
    logging.Formatter.default_msec_format = '%s.%03d'
    logging.basicConfig(level=logging.DEBUG,
                        format='%(asctime)s [%(process)i] %(levelname).4s %(module)s.%(funcName)s: %(message)s')
    sys.exit(cli())