New archi: domain driven development

Working but need to check out code

application/torrents/add_torrent.py

@@ -0,0 +1,85 @@
+"""Add torrent use case."""
+import logging
+
+from infrastructure.api.qbittorrent import QBittorrentClient, QBittorrentAuthError, QBittorrentAPIError
+from .dto import AddTorrentResponse
+
+logger = logging.getLogger(__name__)
+
+
+class AddTorrentUseCase:
+    """
+    Use case for adding a torrent to qBittorrent.
+    
+    This orchestrates the qBittorrent API client to add torrents.
+    """
+    
+    def __init__(self, qbittorrent_client: QBittorrentClient):
+        """
+        Initialize use case.
+        
+        Args:
+            qbittorrent_client: qBittorrent API client
+        """
+        self.qbittorrent_client = qbittorrent_client
+    
+    def execute(self, magnet_link: str) -> AddTorrentResponse:
+        """
+        Add a torrent to qBittorrent using a magnet link.
+        
+        Args:
+            magnet_link: Magnet link of the torrent to add
+        
+        Returns:
+            AddTorrentResponse with success or error information
+        """
+        try:
+            # Validate magnet link
+            if not magnet_link or not isinstance(magnet_link, str):
+                raise ValueError("Magnet link must be a non-empty string")
+            
+            if not magnet_link.startswith("magnet:"):
+                raise ValueError("Invalid magnet link format")
+            
+            logger.info("Adding torrent to qBittorrent")
+            
+            # Add torrent to qBittorrent
+            success = self.qbittorrent_client.add_torrent(magnet_link)
+            
+            if success:
+                logger.info("Torrent added successfully to qBittorrent")
+                return AddTorrentResponse(
+                    status="ok",
+                    message="Torrent added successfully to qBittorrent"
+                )
+            else:
+                logger.warning("Failed to add torrent to qBittorrent")
+                return AddTorrentResponse(
+                    status="error",
+                    error="add_failed",
+                    message="Failed to add torrent to qBittorrent"
+                )
+        
+        except QBittorrentAuthError as e:
+            logger.error(f"qBittorrent authentication error: {e}")
+            return AddTorrentResponse(
+                status="error",
+                error="authentication_failed",
+                message="Failed to authenticate with qBittorrent"
+            )
+        
+        except QBittorrentAPIError as e:
+            logger.error(f"qBittorrent API error: {e}")
+            return AddTorrentResponse(
+                status="error",
+                error="api_error",
+                message=str(e)
+            )
+        
+        except ValueError as e:
+            logger.error(f"Validation error: {e}")
+            return AddTorrentResponse(
+                status="error",
+                error="validation_failed",
+                message=str(e)
+            )