import logging
import requests
from telegram import InlineQueryResultArticle, InputTextMessageContent
from telegram.ext import Updater, CommandHandler, InlineQueryHandler

token_file = open("token", "r")
updater = Updater(token=token_file.read(), use_context=True)
token_file.close()

dispatcher = updater.dispatcher

logging.basicConfig(format='%(acstime)s - %(name)s - %(levelname)s - %(message)s', level=logging.INFO)


class Query:
    input = ""
    station_id = -1
    departure_count = 4
    line_filter = -1
    destination = ""

    def __init__(self, args):
        last_index_string = len(args)
        if args[-1].isdigit():
            self.departure_count = int(args[-1])
            last_index_string -= 1
        request_tmp = ' '.join(args[0:last_index_string]).strip()
        separator_index = request_tmp.find(" to ")
        if separator_index != -1:
            self.input = request_tmp[:separator_index - 1].strip()
            self.destination = request_tmp[separator_index + 4:].strip()
        else:
            self.input = request_tmp
        if args[0].isdigit():
            self.station_id = args[0].strip()
        else:
            self.station_id = search_station(request_tmp[:separator_index].strip())


def start(update):
    update.message.reply_text("Hello")


def search_station(query):
    request = requests.get("https://efa-api.asw.io/api/v1/station/?search=" + query)
    if request.status_code != 200 and len(request.text) > 2:
        return -1
    else:
        return request.json()[0]['stationId']


def get_vvs_departures(update, context):
    if len(context.args) == 0:
        update.message.reply_text("No argument specified")
        return
    query = Query(context.args)
    if query.station_id == -1:
        update.message.reply_text("No station matching this name found!")
        return
    request = requests.get("https://efa-api.asw.io/api/v1/station/" + query.station_id + "/departures")
    if request.status_code != 200:
        update.message.reply_text("Error with server communication")
    update.message.reply_text("Next departures:")
    printed_departures = 0
    for station in request.json():
        if station['direction'].casefold().find(query.destination) != -1 or station['direction'].find(
                query.destination) != -1:
            update.message.reply_text(
                "Line " + station['number'] + " to \"" + station['direction'] + "\" at "
                + station['departureTime']['hour'].zfill(2) + ':' + station['departureTime']['minute'].zfill(2)
                + " +" + str(station['delay']))
            printed_departures += 1
        if printed_departures >= query.departure_count:
            break


def inline_station_search(update, context):
    query = update.inline_query.query
    if len(query) < 5 or not query:
        return
    results = list()
    for station in get_station_id_list(query):
        results.append(
            InlineQueryResultArticle(
                id=station['stationId'],
                title=station['name'],
                input_message_content=InputTextMessageContent("/vvs " + station['stationId'])
            )
        )
    context.bot.answer_inline_query(update.inline_query.id, results)


def get_station_id_list(name):
    request = requests.get("https://efa-api.asw.io/api/v1/station/?search=" + name)
    return request.json()


inline_station_search_handler = InlineQueryHandler(inline_station_search)

dispatcher.add_handler(inline_station_search_handler)

updater.dispatcher.add_handler(CommandHandler('vvs', get_vvs_departures))

updater.start_polling()
updater.idle()