Example Usage of Sound of Text API

soundoftext.js

/* Downloads 'Hello, World', spoken in English, to ./hello.mp3 */

const http = require('https');
const fs = require('fs');

/* Set up handler for response from initial POST request */
function handlePostResponse(data) {
  const response = JSON.parse(data); // parse response body from POST

  const isSuccess = response.success;

  if (!isSuccess) {
    console.log(response.message);
    process.exit(1); // something went wrong; exit
  }

  const soundId = response.id;

  requestStatus(soundId);
}

/* Set up a function to check for status and handle different statuses */
function requestStatus(soundId) {
  http.get(`https://api.soundoftext.com/sounds/${soundId}`, response => {
    let data = '';
    response.on('data', chunk => (data += chunk));
    response.on('end', () => handleStatusResponse(data, soundId));
    response.on('error', console.log);
  });
}

function handleStatusResponse(data, soundId) {
  const response = JSON.parse(data);

  const status = response.status;

  if (status === 'Pending') {
    // wait before requesting again
    setTimeout(() => requestStatus(soundId), 2000);
  } else if (status === 'Error') {
    console.log(response.message);
    process.exit(1); // something went wrong; exit
  } else {
    // must be 'Success', so download the file
    downloadFilePath(response);
  }
}

/* Download the file */
function downloadFilePath(data) {
  const path = data.location;
  const file = fs.createWriteStream('./hello.mp3');

  http.get(path, response => {
    response.pipe(file);
    file.on('finish', () => file.close());
  });
}

/* Kick off initial POST to https://api.soundoftext.com/sounds */

const postOptions = {
  hostname: 'api.soundoftext.com',
  path: '/sounds',
  port: 443,
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
};

const postData = JSON.stringify({
  engine: 'Google',
  data: {
    text: 'Hello, world',
    voice: 'en-US',
  },
});

const req = http.request(postOptions, response => {
  let data = '';
  response.on('data', chunk => (data += chunk));
  response.on('end', () => handlePostResponse(data));
  response.on('error', console.log);
});

req.write(postData);
req.end();