# -*- coding: utf-8 -*- {{{
# vim: set fenc=utf-8 ft=python sw=4 ts=4 sts=4 et:
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# Copyright 2019, Battelle Memorial Institute.
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from xml.dom.minidom import parseString
import requests
import argparse
import getpass
import csv

parser = argparse.ArgumentParser(description='Create Obix driver configurations for site.')
parser.add_argument('url', default="", help='Url of the exports on the site')
parser.add_argument('csvfile', nargs='?', type=argparse.FileType('w'),
                    default=sys.stdout, help="Output file for register CSV configuration.")
parser.add_argument('devicefile', nargs='?', type=argparse.FileType('w'),
                    default=sys.stdout, help="Output file for device configuration.")
parser.add_argument('-u', '--username', default="",
                    help='Username for site log in.')
parser.add_argument('-p', '--password', default="",
                    help='Password for site log in.')
parser.add_argument('-d', '--device-name', default="",
                    help="Default device name for 'Device Name' column.")


args = parser.parse_args()

username=args.username
password=args.password
url=args.url
device_name = args.device_name

while not username:
    username = input("Username: ")

while not password:
    password = getpass.getpass("Password: ")

if not url.endswith("/"):
    url += '/'

csv_file = csv.DictWriter(args.csvfile,
                          ["Device Name", "Volttron Point Name", "Obix Name"])

csv_file.writeheader()

result = requests.get(url,
                      auth=(username, password))

document = parseString(result.text)
elements = document.getElementsByTagName("ref")

def get_csv_row(element):
    result = {}

    name = element.getAttribute("name").replace("$20", " ").replace("$2d", "-")
    result["Volttron Point Name"] = result["Obix Name"] = name

    result["Device Name"] = device_name

    return result


for e in elements:
    row = get_csv_row(e)

    csv_file.writerow(row)


config = {
  "url": url,
  "username": username,
  "password": password,
  # Interval to query interface for updates in minutes.
  # History points are only published if new data is available
  # config points are gathered and published at this interval.
  "check_interval": 15,
  # Path prefix for all publishes
  "path_prefix": "devices/obix/history/",
  "register_config": "config://obix_h.csv"
}

jsonapi.dump(config, args.devicefile, indent=4)


