''' Python Server entry point '''

import argparse
import sys
import os

from .server import start
from .server import stop
from .server import status
from .server import wait
from .server import serve
from .__version__ import __version__

def main():
    ''' main entry point '''
    parser = argparse.ArgumentParser(
        description='Viewer for neural network, deep learning and machine learning models.')
    parser.add_argument('file',
        metavar='MODEL_FILE', help='model file to serve', nargs='?', default=None)
    parser.add_argument('-v', '--version', help="print version", action='store_true')
    parser.add_argument('-b', '--browse', help='launch web browser', action='store_true')
    parser.add_argument('-p', '--port', help='port to serve', type=int)
    parser.add_argument('--host', help="host to serve")
    parser.add_argument('--log', help='log details to console', action='store_true')
    args = parser.parse_args()
    if args.file and not os.path.exists(args.file):
        print("Model file '" + args.file + "' does not exist.")
        sys.exit(2)
    if args.version:
        print(__version__)
        sys.exit(0)
    address = (args.host, args.port) if args.host else args.port if args.port else None
    start(args.file, address=address, browse=args.browse, log=args.log)
    wait()
    sys.exit(0)

if __name__ == '__main__':
    main()