import requests
import json
import pprint
import argparse
from datetime import date, datetime, time, timedelta

url = "https://brn-ybus-pubapi.sa.cz"
tarrifs_path = "/restapi/consts/tariffs"
location_path = "/restapi/consts/locations"
route_path = "/restapi/routes/search/simple"


def json_serial(obj):
    """JSON serializer for objects not serializable by default json code"""
    if isinstance(obj, timedelta):
        return str(obj)
    if isinstance(obj, (datetime, date)):
        return obj.isoformat()
    raise TypeError("Type %s not serializable" % type(obj))


def search_locations(country,city):
    for location in locations:
        if country == location['country']:
            for _city in location['cities']:
                if city == _city['name']:
                    return _city


def search_connection(from_station, to_station, tariff_type, to_location_type, from_location_type, departure):
    r = requests.get(url + route_path, params={"tariffs_type": tariff_type,
                                               "toLocationId": to_station["id"],
                                               "fromLocationId": from_station["id"],
                                               "fromLocationType": from_location_type,
                                               "toLocationType": to_location_type,
                                               "departureDate": departure})

    routes = json.loads(r.content)
    routes_ret = []
    for route in routes['routes']:
        ret = {}
        ret["departure_datetime"] = datetime.fromisoformat(route["departureTime"])
        ret["arrival_datetime"] = datetime.fromisoformat(route["arrivalTime"])
        ret["source"] = from_station["name"]
        ret["destination"] = to_station["name"]
        ret["source_id"] = from_station["id"]
        ret["destination_id"] = to_station["id"]
        ret["free_seats"] = route["freeSeatsCount"]
        ret["carrier"] = "REGIOJET"
        ret["type"] = route["vehicleTypes"][0]
        ret["fare"] = { "amount": route["priceFrom"], "currency": "EUR"}
        routes_ret.append(ret)

    return routes_ret


parser = argparse.ArgumentParser(
    description='Search some connection')  # use of ArgumentParser against of simple OptionParser
parser.add_argument("origin")
parser.add_argument("destination")
parser.add_argument("departure")
args = parser.parse_args()


r = requests.get(url + tarrifs_path)
tariffs = json.loads(r.content)

r = requests.get(url + location_path)
locations = json.loads(r.content)

city_from = search_locations('Czech Republic', args.origin)
city_to = search_locations('Czech Republic', args.destination)
#pprint.pp(city_from)
#pprint.pp(city_to)


ret = search_connection(city_from, city_to, 'REGULAR', 'CITY', 'CITY', args.departure)
print(json.dumps(ret, indent=4, default=json_serial, sort_keys=False))