Feat: add user header with follow info

src/services/UserFollows/getUsersFollowedByUser.ts

@@ -0,0 +1,27 @@
+import DBClient from '@/prisma/DBClient';
+import { z } from 'zod';
+import FollowInfoSchema from './schema/FollowInfoSchema';
+
+interface GetFollowingInfoByUserIdArgs {
+  userId: string;
+  pageNum: number;
+  pageSize: number;
+}
+const getUsersFollowedByUser = async ({
+  userId,
+  pageNum,
+  pageSize,
+}: GetFollowingInfoByUserIdArgs): Promise<z.infer<typeof FollowInfoSchema>[]> => {
+  const usersFollowedByQueriedUser = await DBClient.instance.userFollow.findMany({
+    take: pageSize,
+    skip: (pageNum - 1) * pageSize,
+    where: { following: { id: userId } },
+    select: {
+      follower: { select: { username: true, userAvatar: true, id: true } },
+    },
+  });
+
+  return usersFollowedByQueriedUser.map((u) => u.follower);
+};
+
+export default getUsersFollowedByUser;

src/services/UserFollows/getUsersFollowingUser.ts

@@ -0,0 +1,27 @@
+import DBClient from '@/prisma/DBClient';
+import { z } from 'zod';
+import FollowInfoSchema from './schema/FollowInfoSchema';
+
+interface GetFollowingInfoByUserIdArgs {
+  userId: string;
+  pageNum: number;
+  pageSize: number;
+}
+const getUsersFollowingUser = async ({
+  userId,
+  pageNum,
+  pageSize,
+}: GetFollowingInfoByUserIdArgs): Promise<z.infer<typeof FollowInfoSchema>[]> => {
+  const usersFollowingQueriedUser = await DBClient.instance.userFollow.findMany({
+    take: pageSize,
+    skip: (pageNum - 1) * pageSize,
+    where: { follower: { id: userId } },
+    select: {
+      following: { select: { username: true, userAvatar: true, id: true } },
+    },
+  });
+
+  return usersFollowingQueriedUser.map((u) => u.following);
+};
+
+export default getUsersFollowingUser;

src/services/UserFollows/schema/FollowInfoSchema.ts

@@ -0,0 +1,9 @@
+import GetUserSchema from '@/services/User/schema/GetUserSchema';
+
+const FollowInfoSchema = GetUserSchema.pick({
+  userAvatar: true,
+  id: true,
+  username: true,
+});
+
+export default FollowInfoSchema;