Create example of recursive contextable commands "first meeting" with store data in database for Telegram bot on NestJS
Tags: kaufmanbot, nestjs, recursive, postgres
Published: 2022-04-10 18:39:46

## Links
https://github.com/EndyKaufman/kaufman-bot - source code of bot

https://telegram.me/DevelopKaufmanBot - current bot in telegram

## Description of work

In this post I will am create recursive contextable commands

This is command will meeting with new users and save information about them in database and use these in later

## Create first meeting

### Create migrations for all need tables
_migrations/V202204101203__CreateFirstMeeting.pgsql_
```sql
DO $$
BEGIN
    CREATE TYPE "Gender" AS ENUM (
        'Male',
        'Female'
);
EXCEPTION
    WHEN duplicate_object THEN
        NULL;
END
$$;

DO $$
BEGIN
    CREATE TYPE "FirstMeetingStatus" AS ENUM (
        'StartMeeting',
        'AskFirstname',
        'AskLastname',
        'AskGender',
        'EndMeeting'
);
EXCEPTION
    WHEN duplicate_object THEN
        NULL;
END
$$;

CREATE TABLE IF NOT EXISTS "FirstMeeting" (
    id uuid DEFAULT uuid_generate_v4 () NOT NULL,
    "userId" uuid NOT NULL CONSTRAINT "FK_FIRST_MEETING__USER_ID" REFERENCES "User",
    "status" "FirstMeetingStatus" NOT NULL,
    "firstname" varchar(100) NOT NULL,
    "lastname" varchar(100) NOT NULL,
    "gender" "Gender" NOT NULL,
    "createdAt" timestamp DEFAULT now() NOT NULL,
    "updatedAt" timestamp DEFAULT now() NOT NULL,
    CONSTRAINT "PK_FIRST_MEETING" PRIMARY KEY (id)
);

CREATE UNIQUE INDEX IF NOT EXISTS "UQ_FIRST_MEETING" ON "FirstMeeting" ("userId");


```

Apply migration in database

> npm run migrate:local
```sh
endy@endy-virtual-machine:~/Projects/current/kaufman-bot$ npm run migrate:local

> kaufman-bot@0.0.0 migrate:local
> export $(xargs < ./.env.local) > /dev/null 2>&1 && export DATABASE_URL=$SERVER_POSTGRES_URL && npm run migrate


> kaufman-bot@0.0.0 migrate
> npm run flyway -- migrate


> kaufman-bot@0.0.0 flyway
> flyway -c .flyway.js "migrate"

Flyway Community Edition 6.3.2 by Redgate
Database: jdbc:postgresql://localhost:5432/kaufman_bot_develop (PostgreSQL 13.3)
WARNING: Flyway upgrade recommended: PostgreSQL 13.3 is newer than this version of Flyway and support has not been tested. The latest supported version of PostgreSQL is 12.
Successfully validated 5 migrations (execution time 00:00.017s)
Current version of schema "public": 202204030939
Migrating schema "public" to version 202204101203 - CreateFirstMeeting
Successfully applied 1 migration to schema "public" (execution time 00:00.043s)
```
![npm run migrate:local](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/9g7dk5623q158o97u50h.png)

Update prisma schema from exists database
> npm run prisma:pull:local
```sh
endy@endy-virtual-machine:~/Projects/current/kaufman-bot$ npm run prisma:pull:local

> kaufman-bot@0.0.0 prisma:pull:local
> export $(xargs < ./.env.local) > /dev/null 2>&1 && export DATABASE_URL=$SERVER_POSTGRES_URL && npm run -- prisma db pull && npm run prisma:generate


> kaufman-bot@0.0.0 prisma
> prisma "db" "pull"

Prisma schema loaded from prisma/schema.prisma
Datasource "db": PostgreSQL database "kaufman_bot_develop", schema "public" at "localhost:5432"

Introspecting based on datasource defined in prisma/schema.prisma …

✔ Introspected 4 models and wrote them into prisma/schema.prisma in 123ms
      
Run prisma generate to generate Prisma Client.


> kaufman-bot@0.0.0 prisma:generate
> npm run -- prisma generate


> kaufman-bot@0.0.0 prisma
> prisma "generate"

Prisma schema loaded from prisma/schema.prisma

✔ Generated Prisma Client (3.11.1 | library) to ./node_modules/@prisma/client in 192ms
You can now start using Prisma Client in your code. Reference: https://pris.ly/d/client

import { PrismaClient } from '@prisma/client'
const prisma = new PrismaClient()
```
![npm run prisma:pull:local](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/n1etszh7ch3oz7voh6n4.png)
 
Prisma schema after run that command
```prisma
generator client {
  provider      = "prisma-client-js"
  binaryTargets = ["native", "linux-musl"]
}

datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
}

model User {
  id                String              @id(map: "PK_USERS") @default(dbgenerated("uuid_generate_v4()")) @db.Uuid
  telegramId        String              @unique(map: "UQ_USERS__TELEGRAM_ID") @db.VarChar(64)
  langCode          String              @default("en") @db.VarChar(64)
  debugMode         Boolean             @default(false)
  DialogflowSession DialogflowSession[]
  FirstMeeting      FirstMeeting?
}

model migrations {
  installed_rank Int      @id(map: "__migrations_pk")
  version        String?  @db.VarChar(50)
  description    String   @db.VarChar(200)
  type           String   @db.VarChar(20)
  script         String   @db.VarChar(1000)
  checksum       Int?
  installed_by   String   @db.VarChar(100)
  installed_on   DateTime @default(now()) @db.Timestamp(6)
  execution_time Int
  success        Boolean

  @@index([success], map: "__migrations_s_idx")
  @@map("__migrations")
}

model DialogflowSession {
  id                String   @id(map: "PK_DIALOGFLOW_SESSION") @default(dbgenerated("uuid_generate_v4()")) @db.Uuid
  userId            String   @db.Uuid
  projectId         String   @db.VarChar(512)
  sessionId         String   @db.Uuid
  requestsMetadata  Json     @default("[]")
  responsesMetadata Json     @default("[]")
  createdAt         DateTime @default(now()) @db.Timestamp(6)
  updatedAt         DateTime @default(now()) @db.Timestamp(6)
  User              User     @relation(fields: [userId], references: [id], onDelete: NoAction, onUpdate: NoAction, map: "FK_DIALOGFLOW_SESSION__USER_ID")

  @@unique([userId, projectId, sessionId], map: "UQ_DIALOGFLOW_SESSION")
}

model FirstMeeting {
  id        String             @id(map: "PK_FIRST_MEETING") @default(dbgenerated("uuid_generate_v4()")) @db.Uuid
  userId    String             @unique(map: "UQ_FIRST_MEETING") @db.Uuid
  status    FirstMeetingStatus
  firstname String             @db.VarChar(100)
  lastname  String             @db.VarChar(100)
  gender    Gender
  createdAt DateTime           @default(now()) @db.Timestamp(6)
  updatedAt DateTime           @default(now()) @db.Timestamp(6)
  User      User               @relation(fields: [userId], references: [id], onDelete: NoAction, onUpdate: NoAction, map: "FK_FIRST_MEETING__USER_ID")
}

enum FirstMeetingStatus {
  StartMeeting
  AskFirstname
  AskLastname
  AskGender
  EndMeeting
}

enum Gender {
  Male
  Female
}

```

### Create nx lib

> npm run -- nx g @nrwl/nest:lib first-meeting/server
```sh
endy@endy-virtual-machine:~/Projects/current/kaufman-bot$ npm run -- nx g @nrwl/nest:lib first-meeting/server

> kaufman-bot@0.0.0 nx
> nx "g" "@nrwl/nest:lib" "first-meeting/server"

CREATE libs/first-meeting/server/README.md
CREATE libs/first-meeting/server/.babelrc
CREATE libs/first-meeting/server/src/index.ts
CREATE libs/first-meeting/server/tsconfig.json
CREATE libs/first-meeting/server/tsconfig.lib.json
UPDATE tsconfig.base.json
CREATE libs/first-meeting/server/project.json
UPDATE workspace.json
CREATE libs/first-meeting/server/.eslintrc.json
CREATE libs/first-meeting/server/jest.config.js
CREATE libs/first-meeting/server/tsconfig.spec.json
CREATE libs/first-meeting/server/src/lib/first-meeting-server.module.ts
```
![npm run -- nx g @nrwl/nest:lib first-meeting/server](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/devyxkkz9ptysm48gtb8.png)
 
### Create config
_libs/first-meeting/server/src/lib/first-meeting-config/first-meeting.config.ts_
```ts
export const FIRST_MEETING_CONFIG = Symbol('FIRST_MEETING_CONFIG');

export interface FirstMeetingConfig {
  title: string;
  name: string;
  descriptions: string;
  usage: string[];
  spyWords: string[];
}

```

### Create storage service
_libs/first-meeting/server/src/lib/first-meeting-services/first-meeting.storage.ts_
```ts
import { PrismaClientService } from '@kaufman-bot/core/server';
import { Injectable } from '@nestjs/common';
import { FirstMeeting } from '@prisma/client';

@Injectable()
export class FirstMeetingStorage {
  private readonly firstMeetingOfUsers: Record<number, FirstMeeting> = {};

  constructor(private readonly prismaClientService: PrismaClientService) {}

  async getUserFirstMeeting({
    telegramUserId,
  }: {
    telegramUserId: number;
  }): Promise<FirstMeeting> {
    const currentFirstMeetingOfUsers: FirstMeeting =
      this.firstMeetingOfUsers[this.getKey({ telegramUserId })];
    if (currentFirstMeetingOfUsers) {
      return currentFirstMeetingOfUsers;
    }

    let databaseFirstMeetingOfUsers: FirstMeeting | null = null;
    try {
      databaseFirstMeetingOfUsers =
        await this.prismaClientService.firstMeeting.findFirst({
          where: {
            User: { telegramId: telegramUserId.toString() },
          },
          rejectOnNotFound: true,
        });
    } catch (error) {
      databaseFirstMeetingOfUsers =
        await this.prismaClientService.firstMeeting.create({
          data: {
            firstname: '',
            lastname: '',
            gender: 'Male',
            status: 'StartMeeting',
            User: {
              connectOrCreate: {
                create: { telegramId: telegramUserId.toString() },
                where: { telegramId: telegramUserId.toString() },
              },
            },
          },
        });
    }
    this.firstMeetingOfUsers[this.getKey({ telegramUserId })] =
      databaseFirstMeetingOfUsers;

    return this.firstMeetingOfUsers[this.getKey({ telegramUserId })];
  }

  async removeUserFirstMeeting({ telegramUserId }: { telegramUserId: number }) {
    delete this.firstMeetingOfUsers[this.getKey({ telegramUserId })];
    await this.prismaClientService.firstMeeting.deleteMany({
      where: {
        User: { telegramId: telegramUserId.toString() },
      },
    });
  }

  async pathUserFirstMeeting({
    telegramUserId,
    firstMeeting,
  }: {
    telegramUserId: number;
    firstMeeting: Partial<FirstMeeting>;
  }) {
    const currentUserFirstMeeting = this.getUserFirstMeeting({
      telegramUserId,
    });

    await this.prismaClientService.firstMeeting.updateMany({
      data: {
        ...currentUserFirstMeeting,
        ...firstMeeting,
        updatedAt: new Date(),
      },
      where: {
        User: { telegramId: telegramUserId.toString() },
      },
    });

    delete this.firstMeetingOfUsers[this.getKey({ telegramUserId })];
    this.firstMeetingOfUsers[this.getKey({ telegramUserId })] =
      await this.getUserFirstMeeting({ telegramUserId });
  }

  private getKey({ telegramUserId }: { telegramUserId: number }) {
    return telegramUserId.toString();
  }
}

```

### Create service
_libs/first-meeting/server/src/lib/first-meeting-services/first-meeting.service.ts_
```ts
import {
  BotCommandsEnum,
  BotCommandsProvider,
  BotCommandsProviderActionMsg,
  BotCommandsProviderActionResultType,
  BotСommandsToolsService,
  OnAfterBotCommands,
  OnBeforeBotCommands,
  OnContextBotCommands,
} from '@kaufman-bot/core/server';
import { DEFAULT_LANGUAGE } from '@kaufman-bot/language-swither/server';
import { Inject, Injectable } from '@nestjs/common';
import { FirstMeeting } from '@prisma/client';
import { getText } from 'class-validator-multi-lang';
import { TranslatesService, TranslatesStorage } from 'nestjs-translates';
import {
  FirstMeetingConfig,
  FIRST_MEETING_CONFIG,
} from '../first-meeting-config/first-meeting.config';
import { FirstMeetingStorage } from './first-meeting.storage';

@Injectable()
export class FirstMeetingService
  implements
    BotCommandsProvider,
    OnAfterBotCommands,
    OnContextBotCommands,
    OnBeforeBotCommands
{
  constructor(
    @Inject(FIRST_MEETING_CONFIG)
    private readonly firstMeetingConfig: FirstMeetingConfig,
    private readonly botСommandsToolsService: BotСommandsToolsService,
    private readonly translatesStorage: TranslatesStorage,
    private readonly translatesService: TranslatesService,
    private readonly firstMeetingStorage: FirstMeetingStorage
  ) {}

  async onBeforeBotCommands<
    TMsg extends BotCommandsProviderActionMsg = BotCommandsProviderActionMsg
  >(msg: TMsg): Promise<TMsg> {
    if (msg.botStart) {
      msg.text = 'meet start';
      msg.botStart = false;
    }
    return msg;
  }

  async onContextBotCommands<
    TMsg extends BotCommandsProviderActionMsg = BotCommandsProviderActionMsg
  >(msg: TMsg): Promise<BotCommandsProviderActionResultType<TMsg>> {
    let locale = msg.from?.language_code;
    if (
      !locale ||
      !Object.keys(this.translatesStorage.translates).find((key) =>
        locale?.includes(key)
      )
    ) {
      locale = DEFAULT_LANGUAGE;
    }
    const contextFirstMeeting: Partial<FirstMeeting> =
      msg.botCommandHandlerContext;

    if (
      this.botСommandsToolsService.checkCommands(
        msg.text,
        [this.firstMeetingConfig.name],
        locale
      ) ||
      Object.keys(contextFirstMeeting).length > 0
    ) {
      if (
        this.botСommandsToolsService.checkCommands(
          msg.text,
          [
            getText('exit'),
            getText('reset'),
            getText('cancel'),
            getText('stop'),
            getText('end'),
          ],
          locale
        )
      ) {
        await this.firstMeetingStorage.pathUserFirstMeeting({
          telegramUserId: msg.from.id,
          firstMeeting: {
            ...msg.botCommandHandlerContext,
            status: 'EndMeeting',
          },
        });
        return {
          type: 'text',
          text: this.translatesService.translate(
            getText(`{{close}} Meeting canceled`),
            locale,
            { close: '❌' }
          ),
          message: msg,
          context: { status: 'EndMeeting' },
        };
      }

      if (contextFirstMeeting?.status === 'AskFirstname') {
        return {
          type: 'text',
          text: this.translatesService.translate(
            getText(`What is your last name?`),
            locale
          ),
          message: msg,
          context: <Partial<FirstMeeting>>{
            ...msg.botCommandHandlerContext,
            status: 'AskLastname',
            firstname: this.prepareText(msg.text, locale) || 'Unknown',
          },
        };
      }

      if (contextFirstMeeting?.status === 'AskLastname') {
        return {
          type: 'text',
          text: this.translatesService.translate(
            getText(`What is your gender?`),
            locale
          ),
          message: msg,
          context: <Partial<FirstMeeting>>{
            ...msg.botCommandHandlerContext,
            status: 'AskGender',
            lastname: this.prepareText(msg.text, locale),
          },
        };
      }

      if (contextFirstMeeting?.status === 'AskGender') {
        const firstMeeting: Partial<FirstMeeting> = {
          ...contextFirstMeeting,
          status: 'EndMeeting',
          gender: this.botСommandsToolsService.checkCommands(
            this.prepareText(msg.text, locale),
            [getText('female'), getText('fm')],
            locale
          )
            ? 'Female'
            : 'Male',
        };
        await this.firstMeetingStorage.pathUserFirstMeeting({
          telegramUserId: msg.from.id,
          firstMeeting,
        });
        return {
          type: 'text',
          text: this.translatesService.translate(
            this.getRandomItem([
              getText(
                `Nice to meet you, {{meetGender}} {{firstname}} {{lastname}} {{vulcan}}`
              ),
              getText(`Nice to meet you, {{firstname}} {{vulcan}}`),
            ]),
            locale,
            {
              vulcan: '🖖',
              ...firstMeeting,
              meetGender: this.mapGenderToMeetGender(firstMeeting, locale),
              firstname: this.capitalizeFirstLetter(
                firstMeeting.firstname,
                locale
              ),
              lastname: this.capitalizeFirstLetter(
                firstMeeting.lastname,
                locale
              ),
            }
          ),
          message: msg,
          context: <Partial<FirstMeeting>>{ status: 'EndMeeting' },
        };
      }
    }

    return null;
  }

  async onAfterBotCommands<
    TMsg extends BotCommandsProviderActionMsg = BotCommandsProviderActionMsg
  >(
    result: BotCommandsProviderActionResultType<TMsg>,
    msg: TMsg
  ): Promise<{ result: BotCommandsProviderActionResultType<TMsg>; msg: TMsg }> {
    if (msg.botStart) {
      await this.firstMeetingStorage.removeUserFirstMeeting({
        telegramUserId: msg.from.id,
      });
    }
    if (result === null) {
      msg.text = `${this.firstMeetingConfig.name} ${msg.text}`;
      const newResult = await this.onMessage<TMsg>(msg);
      if (newResult !== null) {
        return { result: newResult, msg };
      }
    }
    return { result, msg };
  }

  async onHelp<
    TMsg extends BotCommandsProviderActionMsg = BotCommandsProviderActionMsg
  >(msg: TMsg): Promise<BotCommandsProviderActionResultType<TMsg>> {
    return await this.onMessage({
      ...msg,
      text: `${this.firstMeetingConfig.name} ${BotCommandsEnum.help}`,
    });
  }

  async onMessage<
    TMsg extends BotCommandsProviderActionMsg = BotCommandsProviderActionMsg
  >(msg: TMsg): Promise<BotCommandsProviderActionResultType<TMsg>> {
    let locale = msg.from?.language_code;
    if (
      !locale ||
      !Object.keys(this.translatesStorage.translates).find((key) =>
        locale?.includes(key)
      )
    ) {
      locale = DEFAULT_LANGUAGE;
    }

    const firstMeeting = await this.firstMeetingStorage.getUserFirstMeeting({
      telegramUserId: msg.from.id,
    });
    const spyWord = this.firstMeetingConfig.spyWords.find((spyWord) =>
      this.botСommandsToolsService.checkCommands(msg.text, [spyWord], locale)
    );
    if (spyWord) {
      if (
        this.botСommandsToolsService.checkCommands(
          msg.text,
          [BotCommandsEnum.help],
          locale
        )
      ) {
        return {
          type: 'markdown',
          message: msg,
          markdown: this.botСommandsToolsService.generateHelpMessage({
            locale,
            name: this.firstMeetingConfig.title,
            descriptions: this.firstMeetingConfig.descriptions,
            usage: this.firstMeetingConfig.usage,
          }),
        };
      }

      if (
        this.botСommandsToolsService.checkCommands(
          msg.text,
          [BotCommandsEnum.reset],
          locale
        )
      ) {
        await this.firstMeetingStorage.removeUserFirstMeeting({
          telegramUserId: msg.from.id,
        });

        return {
          type: 'text',
          text: this.translatesService.translate(
            this.getRandomItem([
              getText('Your meeting information has been deleted {{unamused}}'),
              getText('I forgot about your existence {{worried}}'),
            ]),
            locale,
            {
              unamused: '😒',
              worried: '😟',
            }
          ),
          message: msg,
        };
      }
    }

    if (
      !this.botСommandsToolsService.checkCommands(
        msg.text,
        [BotCommandsEnum.help],
        locale
      ) &&
      ((spyWord &&
        this.botСommandsToolsService.checkCommands(
          msg.text,
          [getText('start')],
          locale
        )) ||
        firstMeeting?.status === 'StartMeeting')
    ) {
      await this.firstMeetingStorage.pathUserFirstMeeting({
        telegramUserId: msg.from.id,
        firstMeeting: {
          status: 'AskFirstname',
          firstname: '',
          lastname: '',
          gender: 'Male',
        },
      });
      return {
        type: 'text',
        text: this.translatesService.translate(
          this.getRandomItem([
            getText(`Hey! I'm Endy {{smile}}, what's your name?`),
            getText(`Hey! what's your name?`),
          ]),
          locale,
          { smile: '🙂' }
        ),
        message: msg,
        context: <Partial<FirstMeeting>>{ status: 'AskFirstname' },
      };
    }

    if (
      firstMeeting.status === 'EndMeeting' &&
      this.botСommandsToolsService.checkCommands(
        msg.text,
        [getText('hi'), getText('hello'), getText('hey')],
        locale
      )
    ) {
      return {
        type: 'markdown',
        markdown: this.translatesService
          .translate(
            this.getRandomItem([
              getText(
                `Hello {{meetGender}} {{firstname}} {{lastname}} {{vulcan}}`
              ),
              getText(`Hello {{firstname}} {{lastname}} {{handsplayed}}`),
              getText(`I'm glad to see you {{firstname}} {{wink}}`),
              getText(`Hi {{firstname}} {{vulcan}}`),
            ]),
            locale,
            {
              vulcan: '🖖',
              handsplayed: '🖐',
              wink: '😉',
              ...firstMeeting,
              meetGender: this.mapGenderToMeetGender(firstMeeting, locale),
              firstname: this.capitalizeFirstLetter(
                firstMeeting.firstname,
                locale
              ),
              lastname: this.capitalizeFirstLetter(
                firstMeeting.lastname,
                locale
              ),
            }
          )
          .split('  ')
          .join(' ')
          .split('  ')
          .join(' '),
        message: msg,
        context: {},
      };
    }

    return null;
  }

  private mapGenderToMeetGender(
    firstMeeting: Partial<FirstMeeting>,
    locale: string
  ) {
    return this.translatesService.translate(
      firstMeeting.gender === 'Female' ? getText('Madam') : getText('Sir'),
      locale
    );
  }

  private prepareText(text: string, locale: string) {
    if (
      this.botСommandsToolsService.checkCommands(
        text,
        [getText('skip'), getText('next')],
        locale
      )
    ) {
      return '';
    }
    return this.botСommandsToolsService
      .clearCommands(
        text,
        [
          getText('I'),
          getText('hi'),
          getText('hello'),
          getText('hey'),
          getText('am'),
          getText('my'),
          getText('is'),
          getText('name'),
          getText('lastname'),
          getText('firstname'),
          getText('last'),
          getText('first'),
        ],
        locale
      )
      .trim();
  }

  private getRandomItem(items: string[]) {
    return items[Math.floor(Math.random() * items.length)];
  }
  private capitalizeFirstLetter(text: string | undefined, locale: string) {
    const [first, ...rest] = (text || '').trim();
    return (first || '').toLocaleUpperCase(locale) + rest.join('');
  }
}

```
### Create module
_libs/first-meeting/server/src/lib/first-meeting.module.ts_
```ts
import {
  BotCommandsModule,
  BOT_COMMANDS_PROVIDER,
  PrismaClientModule,
} from '@kaufman-bot/core/server';
import { DynamicModule, Module } from '@nestjs/common';
import { getText } from 'class-validator-multi-lang';
import { TranslatesModule } from 'nestjs-translates';
import {
  FirstMeetingConfig,
  FIRST_MEETING_CONFIG,
} from './first-meeting-config/first-meeting.config';
import { FirstMeetingService } from './first-meeting-services/first-meeting.service';
import { FirstMeetingStorage } from './first-meeting-services/first-meeting.storage';

@Module({
  imports: [TranslatesModule, BotCommandsModule],
  exports: [TranslatesModule, BotCommandsModule],
})
export class FirstMeetingModule {
  static forRoot(): DynamicModule {
    return {
      module: FirstMeetingModule,
      imports: [PrismaClientModule],
      providers: [
        FirstMeetingStorage,
        {
          provide: FIRST_MEETING_CONFIG,
          useValue: <FirstMeetingConfig>{
            title: getText('First meeting'),
            name: 'meet',
            descriptions: getText(
              'Example of recursive contextable commands "first meeting"'
            ),
            usage: [
              getText('meet start'),
              getText('meet reset'),
              getText('meet help'),
            ],
            spyWords: [getText('meet')],
          },
        },
        {
          provide: BOT_COMMANDS_PROVIDER,
          useClass: FirstMeetingService,
        },
      ],
      exports: [PrismaClientModule],
    };
  }
}

```

### Add FirstMeetingModule to AppModule
_apps/server/src/app/app.module.ts_
```ts
...
@Module({
  imports: [
    ...
    ShortCommandsModule.forRoot({
      commands: {
        en: {
          joke: `get jokes`,
          'quote|thought|wisdom': 'get quotes',
          'facts|fact|history': 'get facts',
          'forgot me': 'meet reset',
          'what you can do|faq': 'help',
        },
        ru: {
          'joke|jokes|шутка|дай шутку|шутки|пошути|шути|рассмеши|смешинки|смешинка':
            'get jokes',
          'quote|thought|wisdom|цитата|дай цитату|цитаты|цитируй|мысль|мудрость|залечи':
            'get quotes',
          'facts|fact|history|дай факт|факты|история': 'get facts',
          'forgot me|забудь меня': 'meet reset',
          'what you can do|faq|что ты умеешь|справка': 'help',
        },
      },
    }),
    CurrencyConverterModule.forRoot(),
    FactsGeneratorModule.forRoot(),
    QuotesGeneratorModule.forRoot(),
    JokesGeneratorModule.forRoot(),
    FirstMeetingModule.forRoot(),
    DialogflowModule.forRoot({
      projectId: env.get('DIALOGFLOW_PROJECT_ID').required().asString(),
    }),
  ],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule {}
```
### Update AppService
_apps/server/src/app/app.service.ts_
```ts
import { BotСommandsService } from '@kaufman-bot/core/server';
import { Injectable, Logger } from '@nestjs/common';
import { On, Start, Update } from 'nestjs-telegraf';
import { Context } from 'telegraf';

@Update()
@Injectable()
export class AppService {
  private readonly logger = new Logger(AppService.name);

  constructor(private readonly botСommandsService: BotСommandsService) {}

  getData(): { message: string } {
    return { message: 'Welcome to server!' };
  }

  @Start()
  async startCommand(ctx: Context) {
    await this.botСommandsService.start(ctx);
  }

  @On('sticker')
  async onSticker(ctx) {
    await this.botСommandsService.process(ctx);
  }

  @On('text')
  async onMessage(ctx) {
    await this.botСommandsService.process(ctx);
  }
}

```

### Prepare files for convert po dictionaries to json

> npm run generate

### Translate all words with po editor

![Translate all words with po editor](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/nl82uc4yuqsuehc66vae.png)
 

## Check new logic in telegram bot

### Help message
![Help message](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/llifl62h3lq75ewlcpon.png)
 
### First write to a bot
![First write to a bot](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/hxv66w4cm2p93j2err8q.png)
 
### Second write to a bot
![Second write to a bot](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/cae1r48o0u630rawdoh5.png)
 
### Remove user information
![Remove user information](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/9ppvl6ybj387mngch81r.png)
 
### In Russian language
![In Russian language](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/98cu6yykbui6ctt35grj.png)
In next post I am add support work in groups and use global bot name for that...