dropped yaml file and dependency for 2 env vars

config.sample.yml

@@ -1,4 +0,0 @@
-token: my_telegram_bot_token
-
-watchlist:
-  max_items: 8

docker-compose.dev.yml

@@ -3,6 +3,6 @@ version: '3.7'
 services:
   bot:
     build: .
+    env_file: .dev.env
     volumes:
-      - ./data.db:/app/data.db
-      - ./config.yml:/app/config.yml:ro
+      - ./data:/app/data

docker-compose.yml

@@ -4,6 +4,8 @@ services:
   bot:
     image: cupcakearmy/mercatus
     restart: unless-stopped
+    environment:
+      - TOKEN=my_token
+      - MAX_LIST_SIZE=8
     volumes:
-      - ./data.db:/app/data.db
-      - ./config.yml:/app/config.yml:ro
+      - ./data:/app/data

requirements.txt

@@ -3,5 +3,4 @@ alpha-vantage==2.1.*
 matplotlib==3.1.*
 numpy==1.18.*
 pandas==0.25.*
-python-telegram-bot==12.2.*
-PyYAML==5.*
+python-telegram-bot==12.2.*

src/commands/watchlist.py

@@ -4,7 +4,7 @@ from telegram.ext import CallbackContext, ConversationHandler, CommandHandler, C
 from commands.other import send_update_to_user
 from constants import Section
 from limited_dict import LimitedDict
-from utils import config
+from utils import max_list_items
 
 ALL, SINGLE, EDIT, ADD, DELETE, BACK, ENABLED, FREQUENCY, INTERVAL, DATA = map(chr, range(10))
 END = str(ConversationHandler.END)
@@ -12,7 +12,7 @@ END = str(ConversationHandler.END)
 
 def get_watchlist(context: CallbackContext) -> LimitedDict:
     return LimitedDict(
-        config[Section.Watchlist.value]['max_items'],
+        max_list_items,
         context.user_data.setdefault(Section.Watchlist.value, {}),
     )
 

src/utils.py

@@ -1,15 +1,27 @@
 from datetime import datetime, timedelta
+from os import environ, makedirs
+from os.path import exists, dirname
 
 from telegram import Update
 from telegram.ext import PicklePersistence, Updater
-from yaml import load, Loader
 
-DB_FILE = './data.db'
-CONFIG_FILE = './config.yml'
+DB_FILE = './data/db.pickle'
+DB_DIR = dirname(DB_FILE)
+
+if not exists(DB_DIR):
+    makedirs(DB_DIR)
+
+try:
+    max_list_items = int(environ.get('MAX_LIST_SIZE'))
+except:
+    max_list_items = 8
+
+token = environ.get('TOKEN')
+if not token:
+    raise Exception('No Token found.')
 
-config = load(open(CONFIG_FILE, 'r'), Loader=Loader)
 persistence = PicklePersistence(DB_FILE)
-updater: Updater = Updater(config['token'], use_context=True, persistence=persistence)
+updater: Updater = Updater(token, use_context=True, persistence=persistence)
 
 
 def update_updater_data():