Add timezone conf (#247)

* Adding TZ support

README.md

@@ -24,6 +24,7 @@ export PYTHONPATH=./src/
 export KEITHFEM_BASE_URL=
 export HTTP_API_TOKEN=
 export DADJOKE_URL=https://icanhazdadjoke.com/
+export TIMEZONE='Europe/Berlin'
 ```
 
 KEITHFEM_BASE_URL is the [airtime](https://www.airtime.pro/) base url of the radio.
@@ -32,5 +33,7 @@ HTTP_API_TOKEN is from [@Botfather](https://web.telegram.org/#/im?p=@BotFather)
 
 DADJOKE_URL is a jokes service.
 
+TIMEZONE is the TZ where the bot is running. Usually paired with airtime service TZ. If not set 'Europe/London' will be used.
+
 
 <sub><sup>Keith F'em, a community radio experiment, is presented by Keith in conjunction with SP2. [email protected]</sup></sub>

src/config.py

@@ -3,3 +3,4 @@
 HTTP_API_TOKEN = os.environ.get("HTTP_API_TOKEN", "")
 KEITHFEM_BASE_URL = os.environ.get("KEITHFEM_BASE_URL", "")
 DADJOKE_URL = os.environ.get("DADJOKE_URL", "")
+TIMEZONE = os.environ.get("TIMEZONE", "Europe/London")

src/keithfembot.py

@@ -1,10 +1,12 @@
 import logging
+import os
+import time
 
 from telegram.ext import CallbackContext, CommandHandler, Updater
 
 from clients.http import HTTPClient
 from commands import About, Donate, Help, Joke, Next, Now, Today, Tomorrow, Week
-from config import HTTP_API_TOKEN
+from config import HTTP_API_TOKEN, TIMEZONE
 
 logging.basicConfig(
     format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", level=logging.INFO
@@ -22,6 +24,10 @@ def error_handler(update: object, context: CallbackContext) -> None:
 
 def main(http_client=None) -> None:
     """Starts the bot."""
+
+    os.environ["TZ"] = TIMEZONE
+    time.tzset()  # Unix only function
+
     updater = Updater(token=HTTP_API_TOKEN, use_context=True)
 
     dp = updater.dispatcher  # type: ignore