clan-api: wrap all api responses with error/success envelop type

pkgs/clan-cli/clan_cli/api/__init__.py

@@ -1,10 +1,12 @@
 from collections.abc import Callable
 from dataclasses import dataclass
-from typing import Any, Generic, Literal, TypeVar
+from functools import wraps
+from typing import Annotated, Any, Generic, Literal, TypeVar, get_type_hints
+
+from clan_cli.errors import ClanError
 
 T = TypeVar("T")
 
-
 ResponseDataType = TypeVar("ResponseDataType")
 
 
@@ -16,22 +18,55 @@ class ApiError:
 
 
 @dataclass
-class ApiResponse(Generic[ResponseDataType]):
-    status: Literal["success", "error"]
-    errors: list[ApiError] | None
-    data: ResponseDataType | None
+class SuccessDataClass(Generic[ResponseDataType]):
+    status: Annotated[Literal["success"], "The status of the response."]
+    data: ResponseDataType
+
+
+@dataclass
+class ErrorDataClass:
+    status: Literal["error"]
+    errors: list[ApiError]
+
+
+ApiResponse = SuccessDataClass[ResponseDataType] | ErrorDataClass
 
 
 class _MethodRegistry:
     def __init__(self) -> None:
+        self._orig: dict[str, Callable[[Any], Any]] = {}
         self._registry: dict[str, Callable[[Any], Any]] = {}
 
     def register(self, fn: Callable[..., T]) -> Callable[..., T]:
-        self._registry[fn.__name__] = fn
+        self._orig[fn.__name__] = fn
+
+        @wraps(fn)
+        def wrapper(*args: Any, **kwargs: Any) -> ApiResponse[T]:
+            try:
+                data: T = fn(*args, **kwargs)
+                return SuccessDataClass(status="success", data=data)
+            except ClanError as e:
+                return ErrorDataClass(
+                    status="error",
+                    errors=[
+                        ApiError(
+                            message=e.msg,
+                            description=e.description,
+                            location=[fn.__name__, e.location],
+                        )
+                    ],
+                )
+
+        # @wraps preserves all metadata of fn
+        # we need to update the annotation, because our wrapper changes the return type
+        # This overrides the new return type annotation with the generic typeVar filled in
+        orig_return_type = get_type_hints(fn).get("return")
+        wrapper.__annotations__["return"] = ApiResponse[orig_return_type]  # type: ignore
+
+        self._registry[fn.__name__] = wrapper
         return fn
 
     def to_json_schema(self) -> dict[str, Any]:
-        # Import only when needed
         from typing import get_type_hints
 
         from clan_cli.api.util import type_to_dict

pkgs/webview-ui/app/src/Config.tsx

@@ -8,9 +8,8 @@ import {
 import { OperationResponse, pyApi } from "./message";
 
 export const makeCountContext = () => {
-  const [machines, setMachines] = createSignal<
-    OperationResponse<"list_machines">
-  >([]);
+  const [machines, setMachines] =
+    createSignal<OperationResponse<"list_machines">>();
   const [loading, setLoading] = createSignal(false);
 
   pyApi.list_machines.receive((machines) => {
@@ -41,7 +40,7 @@ export const CountContext = createContext<CountContextType>([
     loading: () => false,
 
     // eslint-disable-next-line
-    machines: () => ([]),
+    machines: () => undefined,
   },
   {
     // eslint-disable-next-line

pkgs/webview-ui/app/src/message.ts

@@ -72,6 +72,12 @@ const deserialize =
 // Create the API object
 
 const pyApi: PyApi = {} as PyApi;
+
+pyApi.create_clan.receive((r) => {
+  if (r.status === "success") {
+    r.status;
+  }
+});
 operationNames.forEach((opName) => {
   const name = opName as OperationNames;
   // @ts-expect-error - TODO: Fix this. Typescript is not recognizing the receive function correctly

pkgs/webview-ui/app/src/routes/machines/view.tsx

@@ -1,13 +1,30 @@
-import { For, Match, Switch, createEffect, type Component } from "solid-js";
+import {
+  For,
+  Match,
+  Switch,
+  createEffect,
+  createSignal,
+  type Component,
+} from "solid-js";
 import { useCountContext } from "../../Config";
 import { route } from "@/src/App";
 
 export const MachineListView: Component = () => {
   const [{ machines, loading }, { getMachines }] = useCountContext();
 
+  const [data, setData] = createSignal<string[]>([]);
   createEffect(() => {
     if (route() === "machines") getMachines();
   });
+
+  createEffect(() => {
+    const response = machines();
+    if (response?.status === "success") {
+      console.log(response.data);
+      setData(response.data);
+    }
+  });
+
   return (
     <div class="max-w-screen-lg">
       <div class="tooltip" data-tip="Refresh ">
@@ -32,12 +49,12 @@ export const MachineListView: Component = () => {
             </div>
           </div>
         </Match>
-        <Match when={!loading() && machines().length === 0}>
+        <Match when={!loading() && data().length === 0}>
           No machines found
         </Match>
         <Match when={!loading()}>
           <ul>
-            <For each={machines()}>
+            <For each={data()}>
               {(entry) => (
                 <li>
                   <div class="card card-side m-2 bg-base-100 shadow-lg">