clean: just handle auth as configure handles the rest of the flow

auditui/auth.py

@@ -1,6 +1,5 @@
 """Authentication helpers for the Auditui app."""
 
-from getpass import getpass
 from pathlib import Path
 from typing import Tuple
 
@@ -13,30 +12,14 @@ def authenticate(
     auth_path: Path = AUTH_PATH,
 ) -> Tuple[audible.Authenticator, audible.Client]:
     """Authenticate with Audible and return authenticator and client."""
-    auth_path.parent.mkdir(parents=True, exist_ok=True)
+    if not auth_path.exists():
+        raise FileNotFoundError(
+            "Authentication file not found. Please run 'auditui configure' to set up authentication.")
 
-    if auth_path.exists():
     try:
         authenticator = audible.Authenticator.from_file(str(auth_path))
         audible_client = audible.Client(auth=authenticator)
         return authenticator, audible_client
     except (OSError, ValueError, KeyError) as exc:
-            print(f"Failed to load existing auth: {exc}")
+        raise ValueError(
-            print("Please re-authenticate.")
+            f"Failed to load existing authentication: {exc}") from exc
-
-    print("Please authenticate with your Audible account.")
-
-    email = input("\nEmail: ")
-    password = getpass("Password: ")
-    marketplace = input(
-        "Marketplace locale (default: US): ").strip().upper() or "US"
-
-    authenticator = audible.Authenticator.from_login(
-        username=email, password=password, locale=marketplace
-    )
-
-    auth_path.parent.mkdir(parents=True, exist_ok=True)
-    authenticator.to_file(str(auth_path))
-    print("Authentication successful!")
-    audible_client = audible.Client(auth=authenticator)
-    return authenticator, audible_client

auditui/configure.py

@@ -0,0 +1,40 @@
+"""Configuration helpers for the Auditui app."""
+
+from getpass import getpass
+from pathlib import Path
+from typing import Tuple
+
+import audible
+
+from .constants import AUTH_PATH
+
+
+def configure(
+    auth_path: Path = AUTH_PATH,
+) -> Tuple[audible.Authenticator, audible.Client]:
+    """Force re-authentication and save credentials."""
+    if auth_path.exists():
+        response = input(
+            "Configuration already exists. Are you sure you want to overwrite it? (y/N): "
+        ).strip().lower()
+        if response not in ("yes", "y"):
+            print("Configuration cancelled.")
+            raise SystemExit(0)
+
+    print("Please authenticate with your Audible account.")
+
+    email = input("\nEmail: ")
+    password = getpass("Password: ")
+    marketplace = input(
+        "Marketplace locale (default: US): ").strip().upper() or "US"
+
+    authenticator = audible.Authenticator.from_login(
+        username=email, password=password, locale=marketplace
+    )
+
+    auth_path.parent.mkdir(parents=True, exist_ok=True)
+    authenticator.to_file(str(auth_path))
+    print("Authentication successful!")
+    audible_client = audible.Client(auth=authenticator)
+    return authenticator, audible_client
+

main.py

@@ -1,13 +1,42 @@
 #!/usr/bin/env python3
 """Auditui entrypoint."""
 
+import sys
+from pathlib import Path
+
 from auditui.app import Auditui
 from auditui.auth import authenticate
+from auditui.configure import configure
+from auditui.constants import AUTH_PATH
 
 
 def main() -> None:
     """Authenticate and launch the app."""
+    if len(sys.argv) > 1 and sys.argv[1] == "configure":
+        try:
+            configure()
+            print("Configuration completed successfully.")
+        except Exception as exc:
+            print(f"Configuration error: {exc}")
+            sys.exit(1)
+        return
+    
+    config_dir = AUTH_PATH.parent
+    
+    if not config_dir.exists():
+        print("No configuration yet, please run 'auditui configure' to create it")
+        sys.exit(1)
+    
+    try:
         auth, client = authenticate()
+    except Exception as exc:
+        print(f"Authentication error: {exc}")
+        if not AUTH_PATH.exists():
+            print("No configuration yet, please run 'auditui configure' to create it")
+        else:
+            print("Please re-authenticate by running 'auditui configure'")
+        sys.exit(1)
+    
     app = Auditui(auth=auth, client=client)
     app.run()