Implement scenes support

[ghost]

Hey

Tried to use scenes, but got some errors.

Scene init:

  @TelegrafUse()
  useScenes(ctx, next) {
    // Greeter scene
    const greeter = new Scene('greeter');
    greeter.enter(ctx => ctx.reply('Hi'));
    greeter.leave(ctx => ctx.reply('Bye'));
    greeter.hears(/hi/gi, leave());
    greeter.on('message', ctx => ctx.reply('Send `hi`'));

    // Create scene manager
    const stage = new Stage();
    stage.command('cancel', leave());

    // Scene registration
    stage.register(greeter);

    stage.middleware(ctx);
    next();
  }

But, when i tried to enter in:

  @TelegrafStart()
  async startHandler(ctx) {
    ctx.scene.enter('greeter');
}

Got this one: Cannot read property 'enter' of undefined.

[bukhalo]

@VyacheslavSaloidWork I need a little time to answer this question.

@all-contributors please add @VyacheslavSaloidWork for bug

[allcontributors]

@bukhalo

I've put up a pull request to add @VyacheslavSaloidWork! 🎉

[bukhalo]

Really, you can’t connect middleware by forwarding the arguments from @TelegrafUse function decorator. Temporary, you can connect middleware through getting TelegrafProvider from app context. This is shit, but it works 😁.

As example:

// somewhere in main.ts
const telegrafProvider = app.get('TelegrafProvider');
telegrafProvider.use(stage.middleware());

I fix that ASAP, thx.

[bukhalo]

Now (in v1.2.0) you can connect any middleware using a @InjectBot() decorator.

Try something like that:

import {
  InjectBot,
  Stage,
  Composer,
  WizardScene,
  TelegrafProvider,
  session,
  Markup,
} from 'nestjs-telegraf';

export class AppUpdate {
  constructor(@InjectBot() private readonly bot: TelegrafProvider) {
    this.superWizardScene();
  }

  superWizardScene() {
    const stepHandler = new Composer();
    stepHandler.action('next', ctx => {
      ctx.reply('Step 2. Via inline button');
      return ctx.wizard.next();
    });
    stepHandler.command('next', ctx => {
      ctx.reply('Step 2. Via command');
      return ctx.wizard.next();
    });
    stepHandler.use(ctx =>
      ctx.replyWithMarkdown('Press `Next` button or type /next'),
    );

    const superWizard = new WizardScene(
      'super-wizard',
      ctx => {
        ctx.reply(
          'Step 1',
          Markup.inlineKeyboard([
            Markup.urlButton('❤️', 'http://telegraf.js.org'),
            Markup.callbackButton('➡️ Next', 'next'),
          ]).extra(),
        );
        return ctx.wizard.next();
      },
      stepHandler,
      ctx => {
        ctx.reply('Step 3');
        return ctx.wizard.next();
      },
      ctx => {
        ctx.reply('Step 4');
        return ctx.wizard.next();
      },
      ctx => {
        ctx.reply('Done');
        return ctx.scene.leave();
      },
    );

    const stage = new Stage([superWizard], { default: 'super-wizard' });
    this.bot.use(session());
    this.bot.use(stage.middleware());
  }
}

[ghost]

Thank you, man

It's really so helpful

[meowlanguages]

Thank you, man

It's really so helpful

Nothing helpful, it didnt work