refactor: switch to a class approach

main.py

@@ -11,15 +11,19 @@ except ImportError:
     sys.exit(1)
 
 
-def login_to_audible():
+class Auditui:
+    def __init__(self):
+        self.auth = None
+
+    def login_to_audible(self):
         auth_file = Path.home() / ".config" / "auditui" / "auth.json"
         auth_file.parent.mkdir(parents=True, exist_ok=True)
 
         if auth_file.exists():
             try:
-            auth = audible.Authenticator.from_file(str(auth_file))
+                self.auth = audible.Authenticator.from_file(str(auth_file))
                 print("Loaded existing authentication.")
-            return auth
+                return
             except Exception as e:
                 print(f"Failed to load existing auth: {e}")
                 print("Please re-authenticate.")
@@ -36,23 +40,22 @@ def login_to_audible():
             "Marketplace locale (default: US): ").strip().upper() or "US"
 
         try:
-        auth = audible.Authenticator.from_login(
+            self.auth = audible.Authenticator.from_login(
                 username=email,
                 password=password,
                 locale=marketplace
             )
 
             auth_file.parent.mkdir(parents=True, exist_ok=True)
-        auth.to_file(str(auth_file))
+            self.auth.to_file(str(auth_file))
             print("Authentication successful! Credentials saved.")
-        return auth
         except Exception as e:
             print(f"Authentication failed: {e}")
             import traceback
             traceback.print_exc()
             sys.exit(1)
 
-
+    @staticmethod
     def format_runtime(minutes):
         if minutes is None or minutes == 0:
             return "Unknown length"
@@ -67,9 +70,8 @@ def format_runtime(minutes):
             return f"{hours} hour{'s' if hours != 1 else ''}"
         return f"{hours} hour{'s' if hours != 1 else ''} {mins} minute{'s' if mins != 1 else ''}"
 
-
-def list_library(auth):
-    client = audible.Client(auth=auth)
+    def list_library(self):
+        client = audible.Client(auth=self.auth)
 
         try:
             print("\nFetching your library...")
@@ -147,7 +149,7 @@ def list_library(auth):
                 elif isinstance(runtime, (int, float)):
                     minutes = int(runtime)
 
-            runtime_str = format_runtime(minutes)
+                runtime_str = self.format_runtime(minutes)
 
                 asin = product.get("asin") or item.get("asin", "")
 
@@ -170,8 +172,9 @@ def list_library(auth):
 
 
 def main():
-    auth = login_to_audible()
-    list_library(auth)
+    client = Auditui()
+    client.login_to_audible()
+    client.list_library()
 
 
 if __name__ == "__main__":