feat: add SHORT_UUID_LENGTH configuration and update UsersService to utilize it

- Introduced SHORT_UUID_LENGTH in the config schema with validation for values between 16 and 64.
- Updated UsersService to retrieve SHORT_UUID_LENGTH from the configuration and use it in the createNanoId method for generating unique IDs.

Co-authored-by: Dima Murzin <18555945+murzindima@users.noreply.github.com>

Author: kastov

src/common/config/app-config/config.schema.ts

@@ -46,6 +46,11 @@ export const configSchema = z
             .transform((db) => parseInt(db, 10))
             .refine((db) => db >= 0 && db <= 15, 'Redis DB index must be between 0 and 15')
             .default('1'),
+        SHORT_UUID_LENGTH: z
+            .string()
+            .default('16')
+            .transform((val) => parseInt(val, 10))
+            .refine((val) => val >= 16 && val <= 64, 'SHORT_UUID_LENGTH must be between 16 and 64'),
     })
     .superRefine((data, ctx) => {
         if (data.WEBHOOK_ENABLED === 'true') {

src/modules/users/users.service.ts

@@ -8,6 +8,7 @@ import { CommandBus, EventBus, QueryBus } from '@nestjs/cqrs';
 import { Transactional } from '@nestjs-cls/transactional';
 import { EventEmitter2 } from '@nestjs/event-emitter';
 import { Injectable, Logger } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
 
 import { ICommandResponse } from '@common/types/command-response.type';
 import { ERRORS, USERS_STATUS, EVENTS } from '@libs/contracts/constants';
@@ -52,14 +53,18 @@ dayjs.extend(utc);
 @Injectable()
 export class UsersService {
     private readonly logger = new Logger(UsersService.name);
+    private readonly shortUuidLength: number;
 
     constructor(
         private readonly userRepository: UsersRepository,
         private readonly commandBus: CommandBus,
         private readonly eventBus: EventBus,
         private readonly eventEmitter: EventEmitter2,
         private readonly queryBus: QueryBus,
-    ) {}
+        private readonly configService: ConfigService,
+    ) {
+        this.shortUuidLength = this.configService.getOrThrow<number>('SHORT_UUID_LENGTH');
+    }
 
     public async createUser(
         dto: CreateUserRequestDto,
@@ -737,7 +742,7 @@ export class UsersService {
 
     private createNanoId(): string {
         const alphabet = '0123456789ABCDEFGHJKLMNPQRSTUVWXYZ_abcdefghjkmnopqrstuvwxyz-';
-        const nanoid = customAlphabet(alphabet, 16);
+        const nanoid = customAlphabet(alphabet, this.shortUuidLength);
 
         return nanoid();
     }