claudia-bot-builder-fb/lib/line/setup.js

Create chat-bots for various platforms and deploy to AWS Lambda quickly

'use strict';

const prompt = require('souffleur');
const lnReply = require('./reply');
const lnParse = require('./parse');
const color = require('../console-colors');

module.exports = function lnSetup(api, bot, logError, optionalParser, optionalResponder) {
  let parser = optionalParser || lnParse;
  let responder = optionalResponder || lnReply;

  api.post('/line', request => {
    let arr = [].concat.apply([], request.body.events);
    let lnHandle = parsedMessage => {
      if (parsedMessage) {
        let replyToken = parsedMessage.replyToken;

        return Promise.resolve(parsedMessage).then(parsedMessage => bot(parsedMessage, request))
        .then(botResponse => responder(replyToken, botResponse, new Buffer(request.env.lineChannelAccessToken, 'base64').toString('ascii')))
        .catch(logError);
      }
    };

    return Promise.all(arr.map(message => lnHandle(parser(message))))
  .then(() => 'ok');
  });

  api.addPostDeployStep('line', (options, lambdaDetails, utils) => {
    return Promise.resolve()
      .then(() => {
        if (options['configure-line-bot']) {
          console.log(`\n\n${color.green}Line setup${color.reset}\n`);
          console.log(`\nFollowing info is required for the setup, for more info check the documentation.\n`);
          console.log(`\nYour LINE bot Request URL (POST only) is ${color.cyan}${lambdaDetails.apiUrl}/line${color.reset}\n`);

          return prompt(['LINE Channel Access Token'])
            .then(results => {
              const deployment = {
                restApiId: lambdaDetails.apiId,
                stageName: lambdaDetails.alias,
                variables: {
                  lineChannelAccessToken: new Buffer(results['LINE Channel Access Token']).toString('base64')
                }
              };
              console.log(`\n`);

              return utils.apiGatewayPromise.createDeploymentPromise(deployment);
            });
        }
      })
      .then(() => `${lambdaDetails.apiUrl}/line`);
  });
};