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[circleci-url]: https://circleci.com/gh/nestjs/nest
A progressive Node.js framework for building efficient and scalable server-side applications.
## Description
[Telegraf](https://github.com/telegraf/telegraf) module for [Nest](https://github.com/nestjs/nest).
## Installation
```bash
$ npm i nestjs-telegraf telegraf
```
## Usage
### An example of package usage
```typescript
/* bot.module.ts */
import { Module, OnModuleInit, Logger } from '@nestjs/common'
import { ModuleRef } from '@nestjs/core'
import { ConfigModule } from '@nestjs/config'
import { TelegrafModule, TelegrafService } from 'nestjs-telegraf'
import botConfig from './bot.config'
import { TelegrafConfigService } from './telegraf-config.service'
import { BotService } from './bot.service'
@Module({
imports: [
TelegrafModule.fromFactory({
imports: [ConfigModule.forFeature(botConfig)],
useClass: TelegrafConfigService,
}),
],
exports: [TelegrafModule],
providers: [BotService],
})
export class BotModule implements OnModuleInit {
constructor(
private readonly moduleRef: ModuleRef,
private readonly telegrafService: TelegrafService
) {}
onModuleInit() {
this.telegrafService.init(this.moduleRef)
this.telegrafService.startPolling()
}
}
```
```typescript
/* telegraf-config.service.ts */
import { Injectable } from '@nestjs/common'
import { TelegrafOptionsFactory, TelegrafModuleOptions } from 'nestjs-telegraf'
import { ConfigService } from '@nestjs/config'
@Injectable()
export class TelegrafConfigService implements TelegrafOptionsFactory {
constructor(private readonly configService: ConfigService) {}
createTelegrafOptions(): TelegrafModuleOptions {
return {
token: this.configService.get('bot.token'),
}
}
}
```
```typescript
/* bot.config.ts */
import { registerAs } from '@nestjs/config'
interface Config {
token: string
}
export default registerAs(
'bot',
(): Config => ({
token: process.env.TELEGRAM_BOT_TOKEN,
})
)
```
### Telegraf
#### Telegraf methods usage
You can decorate any `Telegraf` method with `@TelegramActionHandler` decorator.
```typescript
/* bot.service.ts */
import { Injectable } from '@nestjs/common'
import { TelegrafTelegramService } from 'nestjs-telegraf'
import { ContextMessageUpdate } from 'telegraf'
@Injectable()
export class BotService {
/* This decorator handle /start command */
@TelegramActionHandler({ onStart: true })
async onStart(ctx: ContextMessageUpdate) {
await ctx.reply('/start command reply')
}
}
```
##### Today available actions for decorator:
- [`onStart`](https://telegraf.js.org/#/?id=start) Handler for /start command.
- [`command`](https://telegraf.js.org/#/?id=command) Command handling.
- [`message`](https://telegraf.js.org/#/?id=hears) Registers middleware for handling text messages.
- [`action`](https://telegraf.js.org/#/?id=action) Registers middleware for handling `callback_data` actions with regular expressions.
#### Telegraf middlewares usage
See https://github.com/bukhalo/nestjs-telegraf/issues/7#issuecomment-577582322
### Telegram
#### Telegram methods usage
Inject `TelegrafTelegramService` from `nestjs-telegraf` package for use [Telegram instance](https://telegraf.js.org/#/?id=telegram) from `telegraf` package.
```typescript
/* bot.service.ts */
import { Injectable } from '@nestjs/common'
import { TelegrafTelegramService, TelegramActionHandler } from 'nestjs-telegraf'
import { ContextMessageUpdate } from 'telegraf'
@Injectable()
export class BotService {
constructor(
private readonly telegrafTelegramService: TelegrafTelegramService
) {}
@TelegramActionHandler({ onStart: true })
async start(ctx: ContextMessageUpdate) {
const me = await this.telegrafTelegramService.getMe()
console.log(me)
}
}
```
## Examples
You can see the basic use of the package in this repository:
https://github.com/bukhalo/nestjs-telegraf-sample
## Support
Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please [read more here](https://docs.nestjs.com/support).
## People
- Authors - [Aleksandr Bukhalo](https://bukhalo.com/) & [Igor Kamyshev](https://kamyshev.me/)
- Maintainers - [Aleksandr Bukhalo](https://bukhalo.com/)
- Website - [https://nestjs.com](https://nestjs.com/)
## License
Nest is [MIT licensed](https://github.com/nestjs/nest/blob/master/LICENSE).