feat: update user display name mutation added

packages/hoppscotch-backend/src/admin/admin.resolver.ts

@@ -314,6 +314,31 @@ export class AdminResolver {
     return admin.right;
   }
 
+  @Mutation(() => Boolean, {
+    description: 'Update user display name',
+  })
+  @UseGuards(GqlAuthGuard, GqlAdminGuard)
+  async updateUserDisplayNameByAdmin(
+    @Args({
+      name: 'userUID',
+      description: 'users UID',
+      type: () => ID,
+    })
+    userUID: string,
+    @Args({
+      name: 'displayName',
+      description: 'users display name',
+    })
+    displayName: string,
+  ): Promise<boolean> {
+    const isUpdated = await this.adminService.updateUserDisplayName(
+      userUID,
+      displayName,
+    );
+    if (E.isLeft(isUpdated)) throwErr(isUpdated.left);
+    return isUpdated.right;
+  }
+
   @Mutation(() => Boolean, {
     description: 'Remove user as admin',
   })

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

@@ -118,6 +118,19 @@ export class AdminService {
     return E.right(invitedUser);
   }
 
+  /**
+   * Update the display name of a user
+   * @param userUid Who's display name is being updated
+   * @param displayName New display name of the user
+   * @returns an Either of boolean or error
+   */
+  async updateUserDisplayName(userUid: string, displayName: string) {
+    const updatedUser = await this.userService.updateUser(userUid, displayName);
+    if (E.isLeft(updatedUser)) return E.left(updatedUser.left);
+
+    return E.right(true);
+  }
+
   /**
    * Revoke infra level user invitation
    * @param inviteeEmail Invitee's email

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

@@ -270,6 +270,30 @@ export class UserService {
     }
   }
 
+  /**
+   * Update a user's data
+   * @param userUID User UID
+   * @param displayName User's displayName
+   * @returns a Either of User or error
+   */
+  async updateUser(userUID: string, displayName: string) {
+    try {
+      const dbUpdatedUser = await this.prisma.user.update({
+        where: { uid: userUID },
+        data: { displayName },
+      });
+
+      const updatedUser = this.convertDbUserToUser(dbUpdatedUser);
+
+      // Publish subscription for user updates
+      await this.pubsub.publish(`user/${updatedUser.uid}/updated`, updatedUser);
+
+      return E.right(updatedUser);
+    } catch (error) {
+      return E.left(USER_NOT_FOUND);
+    }
+  }
+
   /**
    * Validate and parse currentRESTSession and currentGQLSession
    * @param sessionData string of the session