support config from files as well as env vars

bot.py

@@ -12,12 +12,11 @@ import lib
 import heavynode
 
 
-DISCORD_TOKEN = os.environ['discord_token']
+DISCORD_TOKEN = lib.getconfig('DISCORD_TOKEN')
 DISCORD_SERVER_ID = 530446700058509323
-HEAVYNODE_TOKEN = os.environ['heavynode_token']
-# SESSION_COOKIE = os.environ['pterodactyl_session_cookie']
-COOKIE_NAME = 'remember_web_59ba36addc2b2f9401580f014c7f58ea4e30989d'
-COOKIE_VALUE = os.environ[COOKIE_NAME]
+HEAVYNODE_TOKEN = lib.getconfig('HEAVYNODE_TOKEN')
+COOKIE_NAME = lib.getconfig('HEAVYNODE_COOKIE_NAME')
+COOKIE_VALUE = lib.getconfig('HEAVYNODE_COOKIE_VALUE')
 
 
 logging.basicConfig()

lib.py

@@ -1,8 +1,14 @@
 import inspect
+import os
+import pathlib
 
 from discord.ext import commands
 
 
+class ConfigError(Exception):
+    pass
+
+
 class MineBot(commands.Bot):
     def __init__(self, *args, **kwargs):
         self.cleanup = []
@@ -17,4 +23,14 @@ class MineBot(commands.Bot):
             # coroutines etc. return an awaitable object
             if inspect.isawaitable(r):
                 await r
-        await super().close()
+        await super().close()
+
+
+def getconfig(key):
+    if key in os.environ:
+        return os.environ[key]
+    elif f'{key}_FILE' in os.environ:
+        p = os.environ[f'{key}_FILE']
+        return pathlib.Path(p).read_text()
+    else:
+        raise ConfigError('Missing config:', key)