feat: Enhance checkout process by checking asset status before prompting user

src/webdrop_bridge/ui/main_window.py

@@ -501,7 +501,9 @@ class MainWindow(QMainWindow):
             self._prompt_checkout(source, local_path)
     
     def _prompt_checkout(self, azure_url: str, local_path: str) -> None:
-        """Prompt user to check out the asset.
+        """Check checkout status and prompt user if needed.
+        
+        First checks if the asset is already checked out. Only shows dialog if not checked out.
         
         Args:
             azure_url: Azure Blob Storage URL
@@ -512,7 +514,75 @@ class MainWindow(QMainWindow):
         # Extract filename for display
         filename = Path(local_path).name
         
-        # Show confirmation dialog
+        # Extract asset ID
+        match = re.search(r'/([^/]+)/[^/]+$', azure_url)
+        if not match:
+            logger.warning(f"Could not extract asset ID from URL: {azure_url}")
+            return
+        
+        asset_id = match.group(1)
+        
+        # Check checkout status first
+        js_code = f"""
+        (async function() {{
+            try {{
+                const authToken = window.capturedAuthToken;
+                if (!authToken) {{
+                    return {{ error: 'No auth token' }};
+                }}
+                
+                const response = await fetch(
+                    'https://devagravityprivate.azurewebsites.net/api/assets/{asset_id}?fields=checkout',
+                    {{
+                        method: 'GET',
+                        headers: {{
+                            'Accept': 'application/json',
+                            'Authorization': authToken
+                        }}
+                    }}
+                );
+                
+                if (response.ok) {{
+                    const data = await response.json();
+                    return {{ checkout: data.checkout }};
+                }} else {{
+                    return {{ error: 'Failed to fetch asset' }};
+                }}
+            }} catch (error) {{
+                return {{ error: error.toString() }};
+            }}
+        }})();
+        """
+        
+        def on_checkout_status(result):
+            """Callback when checkout status is received."""
+            if not result or isinstance(result, dict) and result.get('error'):
+                logger.warning(f"Could not check checkout status: {result}")
+                # Show dialog anyway as fallback
+                self._show_checkout_dialog(azure_url, filename)
+                return
+            
+            # Check if already checked out
+            checkout_info = result.get('checkout')
+            if checkout_info:
+                logger.info(f"Asset {filename} is already checked out, skipping dialog")
+                return
+            
+            # Not checked out, show confirmation dialog
+            self._show_checkout_dialog(azure_url, filename)
+        
+        # Execute JavaScript to check status
+        self.web_view.page().runJavaScript(js_code, on_checkout_status)
+    
+    def _show_checkout_dialog(self, azure_url: str, filename: str) -> None:
+        """Show the checkout confirmation dialog.
+        
+        Args:
+            azure_url: Azure Blob Storage URL
+            filename: Asset filename
+        """
+        from PySide6.QtWidgets import QMessageBox
+        
         reply = QMessageBox.question(
             self,
             "Checkout Asset",