nestjs-telegraf/README.md
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# NestJS Telegraf ![npm](https://img.shields.io/npm/dm/nestjs-telegraf) ![GitHub last commit](https://img.shields.io/github/last-commit/bukhalo/nestjs-telegraf) ![NPM](https://img.shields.io/npm/l/nestjs-telegraf)
<img align="right" width="95" height="148" title="NestJS logotype"
src="https://nestjs.com/img/logo-small.svg">
NestJS Telegraf powerful solution for creating Telegram bots.
This package uses the best of the NodeJS world under the hood. [Telegraf](https://github.com/telegraf/telegraf) is the most powerful library for creating bots and [NestJS](https://github.com/nestjs) is a progressive framework for creating well-architectured applications. This module provides fast and easy way for creating Telegram bots and deep integration with your NestJS application.
**Features**
- Simple. Easy to use.
- Ton of decorators available out of the box for handling bot actions.
- Ability to create custom decorators.
- Scenes support.
- Telegraf plugins and custom plugins support.
- Ability to run multiple bots simultaneously.
- Full support of NestJS guards, interceptors, filters and pipes!
## Documentation
If you want to dive fully into NestJS Telegraf then don't waste your time in this dump, check out the [documentation site](https://nestjs-telegraf.vercel.app).
## Installation
```bash
$ npm i nestjs-telegraf telegraf
```
## Usage
Once the installation process is complete, we can import the `TelegrafModule` into the root `AppModule`:
```typescript
import { Module } from '@nestjs/common';
import { TelegrafModule } from 'nestjs-telegraf';
@Module({
imports: [
TelegrafModule.forRoot({
token: 'TELEGRAM_BOT_TOKEN',
})
],
})
export class AppModule {}
```
Then create `app.update.ts` file and add some decorators for handling Telegram bot API updates:
```typescript
import {
Update,
Start,
Help,
On,
Hears,
Context,
} from 'nestjs-telegraf';
import { AppService } from './app.service';
import { Context } from './context.interface';
@Update()
export class AppUpdate {
constructor(private readonly appService: AppService)
@Start()
async startCommand(ctx: Context) {
await ctx.reply('Welcome');
}
@Help()
async helpCommand(ctx: Context) {
await ctx.reply('Send me a sticker');
}
@On('sticker')
async onSticker(ctx: Context) {
await ctx.reply('👍');
}
@Hears('hi')
async hearsHi(ctx: Context) {
await ctx.reply('Hey there');
}
}
```
## Telegraf instance access
If you want to use `Telegraf` instance directly, you can use `@InjectBot` for that.
```typescript
import { Injectable } from '@nestjs/common';
import { InjectBot } from 'nestjs-telegraf';
import { Telegraf } from 'telegraf';
import { TelegrafContext } from '../common/interfaces/telegraf-context.interface.ts';
@Injectable()
export class EchoService {
constructor(@InjectBot() private bot: Telegraf<TelegrafContext>) {}
...
}
```
See more on a docs page: https://nestjs-telegraf.vercel.app/extras/bot-injection