config via docker environment variables

flairtimercomment.py

@@ -1,33 +1,52 @@
-import praw
+
 import praw
 import os
 import os.path
 import json
 import time
 
-# Create default config/config.py if it doesn't exist
+
+# Helper to get env var or default
+def env_or_default(var, default):
+    return os.environ.get(var, default)
+
+# Create config/config.py from environment if missing or empty
 default_config_path = os.path.join('config', 'config.py')
-if not os.path.exists(default_config_path):
+def write_config_from_env():
     os.makedirs('config', exist_ok=True)
     with open(default_config_path, 'w') as f:
         f.write(
-            '# Reddit API credentials\n'
-            'username = ""\n'
-            'password = ""\n'
-            'client_id = ""\n'
-            'client_secret = ""\n'
-            'user_agent = "Flair Timer Comment Bot" # Must be unique and descriptive\n'
+            f'username = "{env_or_default("USERNAME", "")}"\n'
+            f'password = "{env_or_default("PASSWORD", "")}"\n'
+            f'client_id = "{env_or_default("CLIENT_ID", "")}"\n'
+            f'client_secret = "{env_or_default("CLIENT_SECRET", "")}"\n'
+            f'user_agent = "{env_or_default("USER_AGENT", "Flair Timer Comment Bot")}"\n'
             '\n'
-            '# Subreddits\n'
-            'subreddit = ""\n'
-            'flair_text = "Waiting for OP"\n'
-            'interval = 30\n'
-            'hours = 48\n'
-            'searchlimit = 600\n'
-            'comment_message = ""\n'
-            'lock_post = False\n'
-            'distinguish_sticky = False\n'
+            f'subreddit = "{env_or_default("SUBREDDIT", "")}"\n'
+            f'flair_text = "{env_or_default("FLAIR_TEXT", "Waiting for OP")}"\n'
+            f'interval = {env_or_default("INTERVAL", "30")}\n'
+            f'hours = {env_or_default("HOURS", "48")}\n'
+            f'searchlimit = {env_or_default("SEARCHLIMIT", "600")}\n'
+            f'comment_message = "{env_or_default("COMMENT_MESSAGE", "")}"\n'
+            f'lock_post = {env_or_default("LOCK_POST", "False")}\n'
+            f'distinguish_sticky = {env_or_default("DISTINGUISH_STICKY", "False")}\n'
         )
+    print(f"Configuration file auto-populated from environment variables at {default_config_path}.")
+
+# Check if config file exists and is non-empty, else generate from env
+def config_needs_populating():
+    if not os.path.exists(default_config_path):
+        return True
+    try:
+        with open(default_config_path, 'r') as f:
+            content = f.read().strip()
+            return len(content) == 0
+    except Exception:
+        return True
+    
+if config_needs_populating():
+    write_config_from_env()
+    # Optionally exit after populating, or continue to run
 
 import config
 def authentication():