Move useCreateEntity into its own hook as well, because why not

app/soapbox/entity-store/hooks/useCreateEntity.ts

@@ -0,0 +1,74 @@
+import { z } from 'zod';
+
+import { useAppDispatch } from 'soapbox/hooks';
+
+import { importEntities } from '../actions';
+
+import type { Entity } from '../types';
+import type { EntitySchema } from './types';
+
+type EntityPath = [entityType: string, listKey?: string]
+type CreateFn<Params, Result> = (params: Params) => Promise<Result> | Result;
+
+interface UseCreateEntityOpts<TEntity extends Entity = Entity> {
+  schema?: EntitySchema<TEntity>
+}
+
+type CreateEntityResult<TEntity extends Entity = Entity, Result = unknown, Error = unknown> =
+  {
+    success: true
+    result: Result
+    entity: TEntity
+  } | {
+    success: false
+    error: Error
+  }
+
+interface EntityCallbacks<TEntity extends Entity = Entity, Error = unknown> {
+  onSuccess?(entity: TEntity): void
+  onError?(error: Error): void
+}
+
+function useCreateEntity<TEntity extends Entity = Entity, Params = any, Result = unknown>(
+  path: EntityPath,
+  createFn: CreateFn<Params, Result>,
+  opts: UseCreateEntityOpts<TEntity> = {},
+) {
+  const [entityType, listKey] = path;
+  const dispatch = useAppDispatch();
+
+  return async function createEntity(
+    params: Params,
+    callbacks: EntityCallbacks = {},
+  ): Promise<CreateEntityResult<TEntity>> {
+    try {
+      const result = await createFn(params);
+      const schema = opts.schema || z.custom<TEntity>();
+      const entity = schema.parse(result);
+
+      // TODO: optimistic updating
+      dispatch(importEntities([entity], entityType, listKey));
+
+      if (callbacks.onSuccess) {
+        callbacks.onSuccess(entity);
+      }
+
+      return {
+        success: true,
+        result,
+        entity,
+      };
+    } catch (error) {
+      if (callbacks.onError) {
+        callbacks.onError(error);
+      }
+
+      return {
+        success: false,
+        error,
+      };
+    }
+  };
+}
+
+export { useCreateEntity };

app/soapbox/entity-store/hooks/useEntityActions.ts

@@ -1,14 +1,10 @@
-import { z } from 'zod';
-
-import { useApi, useAppDispatch } from 'soapbox/hooks';
-
-import { importEntities } from '../actions';
+import { useApi } from 'soapbox/hooks';
 
+import { useCreateEntity } from './useCreateEntity';
 import { useDeleteEntity } from './useDeleteEntity';
 
 import type { Entity } from '../types';
 import type { EntitySchema } from './types';
-import type { AxiosResponse } from 'axios';
 
 type EntityPath = [entityType: string, listKey?: string]
 
@@ -16,59 +12,32 @@ interface UseEntityActionsOpts<TEntity extends Entity = Entity> {
   schema?: EntitySchema<TEntity>
 }
 
-interface CreateEntityResult<TEntity extends Entity = Entity> {
-  response: AxiosResponse
-  entity: TEntity
-}
-
 interface EntityActionEndpoints {
   post?: string
   delete?: string
 }
 
-interface EntityCallbacks<TEntity extends Entity = Entity> {
-  onSuccess?(entity: TEntity): void
-}
-
-function useEntityActions<TEntity extends Entity = Entity, P = any>(
+function useEntityActions<TEntity extends Entity = Entity, Params = any>(
   path: EntityPath,
   endpoints: EntityActionEndpoints,
   opts: UseEntityActionsOpts<TEntity> = {},
 ) {
-  const [entityType, listKey] = path;
-
   const api = useApi();
-  const dispatch = useAppDispatch();
+  const [entityType] = path;
 
   const deleteEntity = useDeleteEntity(entityType, (entityId) => {
     if (!endpoints.delete) return Promise.reject(endpoints);
     return api.delete(endpoints.delete.replace(':id', entityId));
   });
 
-  function createEntity(params: P, callbacks: EntityCallbacks = {}): Promise<CreateEntityResult<TEntity>> {
+  const createEntity = useCreateEntity(path, (params: Params) => {
     if (!endpoints.post) return Promise.reject(endpoints);
-
-    return api.post(endpoints.post, params).then((response) => {
-      const schema = opts.schema || z.custom<TEntity>();
-      const entity = schema.parse(response.data);
-
-      // TODO: optimistic updating
-      dispatch(importEntities([entity], entityType, listKey));
-
-      if (callbacks.onSuccess) {
-        callbacks.onSuccess(entity);
-      }
-
-      return {
-        response,
-        entity,
-      };
-    });
-  }
+    return api.post(endpoints.post, params);
+  }, opts);
 
   return {
-    createEntity: createEntity,
-    deleteEntity: endpoints.delete ? deleteEntity : undefined,
+    createEntity,
+    deleteEntity,
   };
 }