Added ability to query for weather

Uses meteomedia.de and a list of stations and their IDs to reply a fancy picture url with weather information.

bot.py

@@ -1,6 +1,7 @@
 import logging
-import requests
 import re
+
+import requests
 from telegram import InlineQueryResultArticle, InputTextMessageContent, InlineKeyboardButton, InlineKeyboardMarkup
 from telegram.ext import Updater, CommandHandler, InlineQueryHandler, CallbackQueryHandler
 
@@ -28,7 +29,7 @@ class Query:
         argument_names = re.findall(r' to | in | times ', request_tmp)
         arguments = re.split(r' to | in | times ', request_tmp)
         if not arguments[0].isdigit():
-            reply = search_station(arguments[0])
+            reply = search_vvs_station(arguments[0])
             if len(reply) == 1:
                 self.station_id = reply[0]['stationId']
             else:
@@ -77,7 +78,7 @@ def handle_multiple_stations_reply(update, context):
     del sent_multiple_station_message_ids[update.effective_chat['id']]
 
 
-def search_station(query):
+def search_vvs_station(query):
     request = requests.get("https://efa-api.asw.io/api/v1/station/?search=" + query)
     if request.status_code != 200:
         raise ServerCommunicationError
@@ -154,6 +155,30 @@ def get_station_id_list(name):
     return request.json()
 
 
+def search_weather_station(query: str):
+    station_file = open('stations', 'r')
+    for line in station_file:
+        if line.casefold().find(query.casefold()) != -1:
+            station_file.close()
+            return line
+    return 'none'
+
+
+def handle_weather(update, context):
+    if len(context.args) == 0:
+        update.message.reply_text('Please provide a name!')
+        return
+    station_line = search_vvs_station(' '.join(context.args))
+    if station_line == 'none':
+        update.message.reply_text('No weather station matching this name found!')
+        return
+    separator_index = station_line.find(' ')
+    update.message.reply_text('Weather for ' + station_line[separator_index+1:-1]
+                              + ':\nhttp://wetterstationen.meteomedia.de/messnetz/vorhersagegrafik/' +
+                              station_line[:separator_index] + '.png',
+                              disable_notification=True)
+
+
 def error_callback(update, context):
     try:
         raise context.error
@@ -172,6 +197,7 @@ def __main__():
     inline_station_search_handler = InlineQueryHandler(inline_station_search)
     dispatcher.add_handler(inline_station_search_handler)
     dispatcher.add_handler(CommandHandler('vvs', handle_vvs))
+    dispatcher.add_handler(CommandHandler('weather', handle_weather))
 
     dispatcher.add_error_handler(error_callback)