clan-app: Add cancellable tasks

pkgs/clan-app/clan-app.code-workspace

@@ -20,6 +20,9 @@
 		},
 		{
 			"path": "../webview-lib"
+		},
+		{
+			"path": "../clan-cli/clan_lib"
 		}
 	],
 	"settings": {

pkgs/clan-app/clan_app/api/cancel.py

@@ -0,0 +1,17 @@
+import logging
+
+from clan_lib.api import ErrorDataClass, SuccessDataClass
+
+log = logging.getLogger(__name__)
+
+
+def cancel_task(
+    task_id: str, *, op_key: str
+) -> SuccessDataClass[None] | ErrorDataClass:
+    """Cancel a task by its op_key."""
+    log.info(f"Cancelling task with op_key: {task_id}")
+    return SuccessDataClass(
+        op_key=op_key,
+        data=None,
+        status="success",
+    )

pkgs/clan-app/clan_app/app.py

@@ -12,6 +12,7 @@ from pathlib import Path
 from clan_cli.custom_logger import setup_logging
 from clan_lib.api import API
 
+from clan_app.api.cancel import cancel_task
 from clan_app.api.file_gtk import open_file
 from clan_app.deps.webview.webview import Size, SizeHint, Webview
 
@@ -42,6 +43,8 @@ def app_run(app_opts: ClanAppOptions) -> int:
     webview = Webview(debug=app_opts.debug)
 
     API.overwrite_fn(open_file)
+    # breakpoint()
+    API.overwrite_fn(cancel_task)
     webview.bind_jsonschema_api(API)
     webview.size = Size(1280, 1024, SizeHint.NONE)
     webview.navigate(content_uri)

pkgs/clan-app/clan_app/deps/webview/webview.py

@@ -113,6 +113,7 @@ class Webview:
                         reconciled_arguments["op_key"] = seq.decode()
                         # TODO: We could remove the wrapper in the MethodRegistry
                         # and just call the method directly
+
                         result = wrap_method(**reconciled_arguments)
 
                         serialized = json.dumps(