maestro/src/modules/mixpanel/mixpanel.controller.ts

import { Body, Controller, Inject, Param, Post, Req } from '@nestjs/common';
import { init } from 'mixpanel';
import { Authenticated } from 'src/decorators/authentication.decorator';
import { ApiInternalOnlyController } from 'src/decorators/swagger.decorator';
import { RequestUser, User } from 'src/decorators/user.decorator';

@ApiInternalOnlyController()
@Authenticated()
@Controller('trackEvent')
export class MixpanelController {
  constructor(
    @Inject('MIXPANEL_TOKEN')
    private readonly mixpanelToken: string,
  ) {}
  @Post(':id')
  async trackEvent(
    @Param('id') id,
    @Body() body,
    @User() user: RequestUser,
    @Req() request
  ) {
    delete body.info;
    const mixpanel = init(this.mixpanelToken);

    const separator = user.username.includes('-') ? '-' : '.';
    const removeValues = [
      '.dadosferatech.dadosfera',
      '.demo.dadosfera',
      '.dadosferademo',
      '.dadosferarh.dadosfera',
      '.dadosferatech.dadosfera2',
      '.dadosferatech.dadosfera',
      '.dadosfera.fin',
      '.dadosferafin.dadosfera',
      '.praxio.dadosfera',
      '.dadosfera.tech',
      '.treinamentos@dadosfera.ai',
      '.dadosfera2',
      '.treinamentosfera',
      '.dadosfera',
    ];

    let username = user.username;

    removeValues.forEach((value) => {
      username = username.replace(value, '');
    });

    username = username.split('@')?.[0];
    username = username.split('+')?.[0];

    let firstName = username
      .substring(0, username.indexOf(separator))
      .replace('dadosfera', '');
    let lastName = username
      .substring(username.lastIndexOf(separator) + 1)
      .replace('dadosfera', '');

    if (!firstName) {
      firstName = lastName;
      lastName = '';
    }

    firstName = this.capitalize(firstName);
    lastName = this.capitalize(lastName);

    await mixpanel.people.set(user.username, {
      $first_name: firstName,
      $last_name: lastName,
      $name: this.getFullName(firstName, lastName),
      $email: user.username.includes('@')
        ? user.username
        : user.username + '@dadosfera.ai',
      customer_name: user.customer_name
    });

    await mixpanel.track(id, {
      distinct_id: user.username,
      customer: user.customer_name,
      env: process.env.ENV,
      $ip: request.ip,
      $os: request.headers['sec-ch-ua-platform'] || '',
      $browser: request.headers['user-agent'],
      ...body,
    });

    return { id, body, user: user.username };
  }

  capitalize(sentence: string): string {
    if (!sentence) {
      return '';
    }

    return sentence[0].toUpperCase() + sentence.substring(1);
  }

  getFullName(firstName: string, lastName: string) {
    return `${firstName}${lastName ? ' ' + lastName : ''}`;
  }
}