Fix linting issues

src/config.py

@@ -10,4 +10,4 @@
 
 GITHUB_TOKEN = os.environ.get("GITHUB_TOKEN")
 GITHUB_APP_TOKEN = os.environ.get("GITHUB_APP_TOKEN")
-APP_AUTH_ID = "Iv1.029716a4d1524dcd"
+APP_AUTH_ID = "Iv1.029716a4d1524dcd"

src/helpers.py

@@ -53,17 +53,23 @@ def get_token(logger):
 
     if token is not None:
         return token
-    elif args.mode == "pat-auth":
+    if args.mode == "pat-auth":
         token = GITHUB_TOKEN
-    elif args.mode == "app-auth":
+        return token
+    if args.mode == "app-auth":
         token = GITHUB_APP_TOKEN
         if not token:
-            logger.info(f"Obtain the Github App token by accessing: http://localhost:8000/auth")
-            logger.info(f"and set GITHUB_APP_TOKEN as environment variable.")
-            raise Exception("Github APP token not found.")
+            logger.info("Obtain the Github App token by accessing: http://localhost:8000/auth")
+            logger.info("and set GITHUB_APP_TOKEN as environment variable.")
+            raise RuntimeError("Github APP token not found.")
     return token
 
 def authenticate_with_device_flow(logger):
+    """Initiates Github Device Authentication flow
+
+    Returns:
+        token: Github App token for the authorized user
+    """
     device_code_url = "https://github.com/login/device/code"
     client_id = APP_AUTH_ID
     payload = {
@@ -76,7 +82,7 @@ def authenticate_with_device_flow(logger):
     }
 
     try:
-        response = requests.post(device_code_url, json=payload, headers=headers)
+        response = requests.post(device_code_url, json=payload, headers=headers, timeout=10)
         if response.status_code == 200:
             data = response.json()
             device_code = data['device_code']
@@ -86,29 +92,37 @@ def authenticate_with_device_flow(logger):
             logger.info(f"Activate GitHub authentication at: {verification_uri}")
             logger.info(f"Enter activation code: {user_code}")
 
-            logger.info(f"Waiting 30 seconds for the user to authorize the device...")
+            logger.info("Waiting 30 seconds for the user to authorize the device...")
             time.sleep(30)
 
             token_url = "https://github.com/login/oauth/access_token"
             token_response = requests.post(token_url, json={
                 "client_id": client_id,
                 "device_code": device_code,
                 "grant_type": "urn:ietf:params:oauth:grant-type:device_code"
-            }, headers={"Accept": "application/json"})
+            }, headers={"Accept": "application/json"}, timeout=10)
 
             token_data = token_response.json()
             token_value = token_data.get("access_token")
 
             if token_value is not None:
                 logger.info("Successfully obtained access token.")
-                logger.info(f"Please set env var GITHUB_APP_TOKEN={token_value} and restart the app.")
-            else:
-                logger.error(f"Failed to obtain access token. Status: {token_response.status_code}, Response: {token_response.text}")
+                logger.info(
+                    "Please set env var GITHUB_APP_TOKEN=%s and restart the app.", 
+                    token_value
+                )
                 return None
-        else:
-            logger.error(f"Failed to initiate device flow: {response.status_code} {response.text}")
+            logger.error(
+                "Failed to obtain access token. "
+                "Status: %s, Response: %s", 
+                token_response.status_code,
+                token_response.text
+            )
             return None
 
+        logger.error(f"Failed to initiate device flow: {response.status_code} {response.text}")
+        return None
+
     except Exception as e:
         logger.exception(f"Error during device flow authentication: {str(e)}")
         return None

src/routes.py

@@ -86,13 +86,21 @@ def index():
 def auth():
     """Endpoint for handling Device Flow authentication."""
     try:
-        threading.Thread(target=authenticate_with_device_flow, args=(logger,)).start()
-
-        return make_response("Authentication process started. Please check your console for instructions.", 200)
-    except Exception as e:
+        threading.Thread(
+            target=authenticate_with_device_flow,
+            args=(logger,)
+        ).start()
+
+        msg = (
+            "Authentication process started. "
+            "Please check your console for instructions."
+        )
+        return make_response(msg, 200)
+
+    except RuntimeError as e:
         logger.error("An error occurred during authentication: %s", str(e))
         return make_response("Authentication error.", 500)
-    
+
 
 @app.route('/health')
 def health():
@@ -152,23 +160,22 @@ def limit():
                 'rate_limit': rate
             }
         logger.info("Request URI: %s Response Code: %d",
-                    redact_token(request.full_path), response.status_code)            
+                    redact_token(request.full_path), response.status_code)
     else:
-        logger.warning("Missing parameter(s) or Environment Variable")   
+        logger.warning("Missing parameter(s) or Environment Variable")
         response = {'status': 'ok', 'rate_limit': {
             'error': 'Failed to retrieve rate limit information'}}
 
     return jsonify(response)
 
 
-@app.route('/token')
-def token():
-    if access_token is None:
-        return jsonify({"error": "Token is not set."}), 401
-    return jsonify({"Token": access_token})
-
 @app.route('/favicon.ico')
 def favicon():
+    """Handle favicon reuquests from browser
+
+    Returns:
+        http_status: 204
+    """  
     return '', 204