const FormData = require('form-data');

const fs = require('fs');
const crypto = require('crypto');
const authUtils = require('./utils/auth-utils');

const serverConfig = {
 protocol: 'https:',
 hostname: 'translate.rozetta-api.io',
 port: 443
};
const authConfig = {
 accessKey: 'ACCESS_KEY',
 secretKey: 'SECRET_KEY',
 nonce: Date.now().toString()
};
const speechConfig = {
 lang: 'ja',
 audioFile: 'speech.wav',
 contractId: 'your contractId'
};

const sendRequest = (serverConfig, authConfig, speechConfig) => {
 const form = new FormData();
 form.append('sourceLang', speechConfig.lang);
 form.append('audioFile', fs.createReadStream(speechConfig.audioFile));
 form.append('contractId', speechConfig.contractId);

 const path = '/api/v1/translate/stt';
 const signature = authUtils.generateSignature(
  path,
  authConfig.secretKey,
  authConfig.nonce
);
 return new Promise((resolve, reject) => {
   form.submit(
     {
       protocol: serverConfig.protocol,
       host: serverConfig.hostname,
       port: serverConfig.port,
       path,
       headers: {
         accessKey: authConfig.accessKey,
         signature,
         nonce: authConfig.nonce
       }
     },
     (error, response) => {
       if (error !== null) {
         reject(error);
         return;
       }
       response.setEncoding('utf8');
       let data = '';
       response.on('data', (chunk) => {
         data += chunk;
       });
       response.on('end', () => {
         resolve(data);
       });
     }
   );
 });
};

const main = async () => {
 try {
   const response = await sendRequest(
     serverConfig,
     authConfig,
     speechConfig
   );
   console.log('Server response:');
   console.log(response);
 } catch (error) {
   console.error(error);
 }
};

main();