From 126df6e3f838627dab55465af7f71db474fe88b6 Mon Sep 17 00:00:00 2001
From: cp-20 <n.naoki.1587@gmail.com>
Date: Sat, 15 Jun 2024 22:50:05 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20API=E5=91=BC=E3=81=B3=E5=87=BA=E3=81=97?=
 =?UTF-8?q?=E3=81=AE=E3=83=A9=E3=83=83=E3=83=91=E3=83=BC=E3=82=92=E4=BD=9C?=
 =?UTF-8?q?=E6=88=90?=
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---
 frontend/src/features/api.ts | 203 +++++++++++++++++++++++++++++++++++
 1 file changed, 203 insertions(+)
 create mode 100644 frontend/src/features/api.ts

diff --git a/frontend/src/features/api.ts b/frontend/src/features/api.ts
new file mode 100644
index 0000000..4570b0b
--- /dev/null
+++ b/frontend/src/features/api.ts
@@ -0,0 +1,203 @@
+export type HttpMethod = 'GET' | 'POST' | 'PUT' | 'DELETE';
+
+export const fetchApi = async (
+  method: HttpMethod,
+  path: string,
+  option?: { parameters?: Record<string, string | undefined>; body?: Record<string, unknown> },
+) => {
+  const bodyObj = option?.body && {
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify(option?.body),
+  };
+  const parameterStr = option?.parameters
+    ? new URLSearchParams(JSON.parse(JSON.stringify(option?.parameters))).toString()
+    : '';
+  const res = await fetch(`/api${path}?${parameterStr}`, {
+    method,
+    ...bodyObj,
+  });
+  const data = await res.json();
+  return data;
+};
+
+export type Expand<T> = T extends infer O ? { [K in keyof O]: O[K] } : never;
+
+export type CreatedPost = {
+  /**
+   * 変換元のメッセージ
+   */
+  original_message: string;
+  /**
+   * 変換後のメッセージ
+   */
+  converted_message: string;
+  /**
+   * UUID
+   */
+  id: string;
+  /**
+   * 投稿時刻
+   */
+  created_at: string;
+  /**
+   * リプライのとき、親のID。そうでなければ自身のID
+   */
+  parent_id?: string;
+  /**
+   * リプライのとき、そのおおもとのID。そうでなければ自身のID
+   */
+  root_id: string;
+};
+
+export type Post = Omit<CreatedPost, 'parent_id'> & {
+  /**
+   * 投稿したユーザー名
+   */
+  user_name: string;
+  /**
+   * リアクションのリスト
+   */
+  reactions: Reaction[];
+  /**
+   * 自分がリアクションしたリアクションIDのリスト
+   */
+  my_reactions: number[];
+};
+export type PostWithoutParents = Omit<Post, 'root_id'>;
+export type PostDetail = PostWithoutParents & {
+  /**
+   * 全ての祖先投稿で、古い順
+   */
+  ancestors: Array<{
+    post: Omit<PostWithoutParents, 'parent_id' | 'root_id'>;
+    children_count: number;
+  }>;
+  /**
+   * 1個下の子投稿で、新しい順
+   */
+  children: Array<{
+    post: Omit<PostWithoutParents, 'parent_id' | 'root_id'>;
+    children_count: number;
+  }>;
+};
+
+export type Reaction = {
+  /**
+   * リアクションID
+   */
+  id: number;
+  /**
+   * カウント
+   */
+  count: number;
+};
+export type ReactionDetail = {
+  /**
+   * リアクションID
+   */
+  id: number;
+  /**
+   * リアクションしたユーザーのID
+   */
+  users: string[];
+};
+
+export type CreatePostBody = {
+  /**
+   * メッセージ
+   */
+  message: string;
+  /**
+   * リプライのとき、親のID。そうでなければundefined
+   */
+  parent_id?: string;
+};
+export type CreatePostResponse = CreatedPost;
+export const createPost = async (body: CreatePostBody): Promise<CreatePostResponse> => {
+  return fetchApi('POST', '/posts', { body });
+};
+
+export type GetPostsParameters = {
+  /**
+   * 取得件数。デフォルト30
+   */
+  limit?: number;
+  /**
+   * このIDの投稿より後に投稿されたものを取得する。指定されない場合は、最新のものからlimit件取得する
+   */
+  after?: string;
+  /**
+   * リポストのやつを含むかどうか。デフォルトはfalse
+   */
+  repost?: boolean;
+};
+export type GetPostsResponse = Array<
+  Expand<
+    Post & {
+      /**
+       * リポストの場合はリポストしたユーザーの名前
+       */
+      repost_user?: string;
+    }
+  >
+>;
+export const getPosts = async ({
+  limit,
+  after,
+  repost,
+}: GetPostsParameters): Promise<CreatePostResponse[]> => {
+  return fetchApi('GET', '/posts', {
+    parameters: { limit: limit?.toString() ?? '30', after, repost: repost?.toString() ?? 'false' },
+  });
+};
+
+type GetPostResponse = Expand<PostDetail>;
+export const getPost = async (postId: string): Promise<GetPostResponse> => {
+  return fetchApi('GET', `/posts/${postId}`);
+};
+
+export type PostReactionResponse = Reaction[];
+export const postReaction = async (postId: string, reactionId: number) => {
+  return fetchApi('POST', `/posts/${postId}/reactions/${reactionId}`);
+};
+
+export type DeleteReactionResponse = Reaction[];
+export const deleteReaction = async (postId: string, reactionId: number) => {
+  return fetchApi('DELETE', `/posts/${postId}/reactions/${reactionId}`);
+};
+
+export type GetReactionsResponse = ReactionDetail[];
+export const getReactions = async (postId: string) => {
+  return fetchApi('GET', `/posts/${postId}/reactions`);
+};
+
+export type GetTrendResponse = Array<Post>;
+export const getTrend = async () => {
+  return fetchApi('GET', '/trend');
+};
+
+export type GetUserResponse = {
+  /**
+   * ユーザーID
+   */
+  user_name: string;
+  /**
+   * 投稿数
+   */
+  post_count: number;
+  /**
+   * リアクションした数
+   */
+  reaction_count: number;
+  /**
+   * リアクションされた数
+   */
+  get_reaction_count: number;
+  /**
+   * 投稿のリスト
+   */
+  posts: Post[];
+};
+export const getUser = async (userId: string) => {
+  return fetchApi('GET', `/user/${userId}`);
+};