Psudo sendmail script for testing

sendmail.js

#!/usr/bin/env node
const fs = require('fs');
const path = require('path');
const mailDir = path.join( __dirname, '..', '..', 'test-mails' );

const {stdin} = process;

async function getStdin() {
	let result = '';

	if (stdin.isTTY) {
		return result;
	}

	stdin.setEncoding('utf8');

	for await (const chunk of stdin) {
		result += chunk;
	}

	return result;
}


if( !fs.existsSync( mailDir ) ){
  fs.mkdirSync( mailDir );
}

function parseMail( rawStr ){
  str = rawStr.split('\n\n');
  const headers = str[ 0 ];
  const body = str.slice(1).join('\n\n');
  const headersObj = {};
  headers.split('\n').forEach(function(v){
    v = v.split(': ');
    headersObj[ v[ 0 ] ] = v[ 1 ];
  });

  headersObj.body = body;

  fs.writeFileSync( path.join( mailDir, headersObj[ 'Message-ID' ] ) + '.eml', rawStr );
  return headersObj;
}

function main(){
  getStdin()
    .then( parseMail )
    .then( function( mailJson ){
      // fs.writeFileSync( path.join( mailDir, mailJson[ 'Message-ID' ] ) + '.json', JSON.stringify(mailJson, null, 2) );
    });
}

if( require.main === module ){
  main();
}