feat(api): リアクションの削除ができるように

src/server/controller/post.ts

@@ -134,6 +134,17 @@ export class PostController {
     return new Success(resp);
   }
 
+  async UndoReaction(userID: string, postID: string) {
+    const res = await this.createReactionService.Undo(
+      postID as Snowflake,
+      userID as Snowflake,
+    );
+    if (res.isFailure()) {
+      return new Failure(res.value);
+    }
+    return new Success(res);
+  }
+
   private convertToCommonResponse(arg: { post: PostData; user: UserData }) {
     const resp: CommonPostResponse = {
       id: arg.post.id,

src/server/handlers/post.ts

@@ -74,4 +74,14 @@ export class PostHandler {
       }
       r.code(200).send(re.value);
     };
+
+  public UndoReaction: FastifyHandlerMethod<{ Params: { id: string } }> =
+    async (q, r) => {
+      const re = await this.controller.UndoReaction("123", q.params.id);
+      if (re.isFailure()) {
+        const [code, message] = ErrorConverter(re.value);
+        return r.code(code).send(message);
+      }
+      r.code(204).send();
+    };
 }

src/server/start.ts

@@ -87,6 +87,7 @@ export async function StartServer(port: number) {
   app.get("/api/v1/posts/:id", postHandler.FindByID);
   app.delete("/api/v1/posts/:id", postHandler.DeletePost);
   app.post("/api/v1/posts/:id/reaction", postHandler.CreateReaction);
+  app.delete("/api/v1/posts/:id/reaction", postHandler.UndoReaction);
   app.post("/api/v1/posts", postHandler.CreatePost);
   app.get("/api/v1/users/:name", userHandler.FindByHandle);
   app.get("/api/v1/users/:name/posts", userHandler.FindUserPosts);

src/service/post/create_reaction_service.ts

@@ -26,6 +26,14 @@ export class CreateReactionService {
     return new Success(data);
   }
 
+  async Undo(postID: Snowflake, userID: Snowflake): AsyncResult<void, Error> {
+    const res = await this.repository.Undo(postID, userID);
+    if (res.isFailure()) {
+      return new Failure(res.value);
+    }
+    return new Success(void "");
+  }
+
   private async isExists(d: PostReactionEvent): Promise<boolean> {
     const res = await this.repository.Find(d.postID, d.userID);
     return res.isSuccess();