feat(client): add simple telegram client

lib/TelegramClient.ts

@@ -0,0 +1,25 @@
+import { Injectable, Inject } from '@nestjs/common'
+import Telegram from 'telegraf/telegram'
+
+import { TokenInjectionToken } from './TokenInjectionToken'
+import { TelegramModuleOptionsFactory } from './TelegramModuleOptionsFactory'
+
+@Injectable()
+export class TelegramClient {
+  private telegram: any
+
+  public constructor(
+    @Inject(TokenInjectionToken) factory: TelegramModuleOptionsFactory,
+  ) {
+    const { token } = factory.createOptions()
+
+    this.telegram = new Telegram(token)
+  }
+
+  public async sendMessage(
+    chatId: string | number,
+    text: string,
+  ): Promise<void> {
+    await this.telegram.sendMessage(chatId, text)
+  }
+}

lib/telegram.module.ts

@@ -5,9 +5,11 @@ import {
   DynamicModule,
 } from '@nestjs/common'
 import { ModuleMetadata, Type } from '@nestjs/common/interfaces'
+
 import { TelegramBot } from './TelegramBot'
 import { TelegramModuleOptionsFactory } from './TelegramModuleOptionsFactory'
 import { TokenInjectionToken } from './TokenInjectionToken'
+import { TelegramClient } from './TelegramClient'
 
 interface TelegramFactory extends Pick<ModuleMetadata, 'imports'> {
   useClass?: Type<TelegramModuleOptionsFactory>
@@ -25,6 +27,7 @@ export class TelegramModule implements NestModule {
       module: TelegramModule,
       providers: [
         TelegramBot,
+        TelegramClient,
         {
           provide: TokenInjectionToken,
           useClass: factory.useClass,