text: // Copyright (c) Microsoft Corporation. All rights reserved.
  // Licensed under the MIT License.
  
  // index.js is used to setup and configure your bot
  
  // Import required pckages
  const path = require('path');
  
  // Read botFilePath and botFileSecret from .env file.
  const ENV_FILE = path.join(__dirname, '.env');
  require('dotenv').config({ path: ENV_FILE });
  
  const restify = require('restify');
  
  // Import required bot services.
  // See https://aka.ms/bot-services to learn more about the different parts of a bot.
  const { BotFrameworkAdapter } = require('botbuilder');
  const { TeamsMessagingExtensionsActionBot } = require('./bots/teamsMessagingExtensionsActionBot');
  
  // Create adapter.
  // See https://aka.ms/about-bot-adapter to learn more about adapters.
  const adapter = new BotFrameworkAdapter({
      appId: process.env.MicrosoftAppId,
      appPassword: process.env.MicrosoftAppPassword
  });
  
  adapter.onTurnError = async (context, error) => {
      // This check writes out errors to console log .vs. app insights.
      // NOTE: In production environment, you should consider logging this to Azure
      //       application insights. See https://aka.ms/bottelemetry for telemetry 
      //       configuration instructions.
      console.error(`\n [onTurnError] unhandled error: ${ error }`);
  
      // Send a trace activity, which will be displayed in Bot Framework Emulator
      await context.sendTraceActivity(
          'OnTurnError Trace',
          `${ error }`,
          'https://www.botframework.com/schemas/error',
          'TurnError'
      );
  
      // Send a message to the user
      await context.sendActivity('The bot encountered an error or bug.');
      await context.sendActivity('To continue to run this bot, please fix the bot source code.');
  };
  
  // Create the bot that will handle incoming messages.
  const bot = new TeamsMessagingExtensionsActionBot();
  
  // Create HTTP server.
  const server = restify.createServer();
  server.listen(process.env.port || process.env.PORT || 3978, function() {
      console.log(`\n${ server.name } listening to ${ server.url }`);
  });
  
  // Listen for incoming requests.
  server.post('/api/messages', (req, res) => {
      adapter.processActivity(req, res, async (context) => {
          await bot.run(context);
      });
  });
  