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)


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:
        return -1
    else:
        return request.json()[0]['stationId']


def get_vvs_departures(update, context):
    number_departures = 4
    last_index_string = len(context.args)
    if len(context.args) == 0:
        update.message.reply_text("No argument specified")
        return
    if context.args[-1].isdigit():
        number_departures = context.args[-1]
        last_index_string -= 1
    if context.args[0].isdigit():
        station_id = context.args[0]
    else:
        station_id = search_station(' '.join(context.args[0:last_index_string]))
    request = requests.get("https://efa-api.asw.io/api/v1/station/" + station_id + "/departures")
    if request.status_code != 200:
        update.message.reply_text("Error with server communication")
    update.message.reply_text("Next departures:")
    for station in request.json()[:int(number_departures)]:
        update.message.reply_text(
            "Line " + station['number'] + " to \"" + station['direction'] + "\" at "
            + station['departureTime']['hour'].zfill(2) + ':' + station['departureTime']['minute'].zfill(2)
            + " +" + str(station['delay']))


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()