feat: user update and subscribers added

packages/hoppscotch-backend/src/user/user.service.ts

@@ -0,0 +1,34 @@
+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../prisma/prisma.service';
+import { User } from './user.model';
+import * as E from 'fp-ts/lib/Either';
+import { USER_NOT_FOUND } from 'src/errors';
+import { UpdateUserInput } from './dtos/update-user-input.dto';
+import { PubSubService } from 'src/pubsub/pubsub.service';
+
+@Injectable()
+export class UserService {
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly pubsub: PubSubService,
+  ) {}
+
+  async updateUser(user: User, updateUserDto: UpdateUserInput) {
+    try {
+      const updatedUser = await this.prisma.user.update({
+        where: { uid: user.uid },
+        data: updateUserDto,
+      });
+
+      // Publish subscription for user updates
+      await this.pubsub.publish(
+        `user_settings/${user.uid}/updated`,
+        updatedUser,
+      );
+
+      return E.right(updatedUser);
+    } catch (e) {
+      return E.left(USER_NOT_FOUND);
+    }
+  }
+}