// https://cloud.google.com/speech-to-text/docs/async-time-offsets

// https://cloud.google.com/speech-to-text/docs/quickstart-client-libraries

// transcribes a local file <1 minute in length

async function main() {

// Imports the Google Cloud client library

const speech = require('@google-cloud/speech');

const fs = require('fs');

// Creates a client

const client = new speech.SpeechClient();

// storeData function

const storeData = (data, path) => {

try {

// fs.writeFileSync(path, JSON.stringify(data))

fs.writeFileSync('./transcriptions/00001.txt', data);

} catch (err) {

console.error(err)

}

}

// The name of the audio file to transcribe

const fileName = './resources/IMG_3334_1.mp3';

// Reads a local audio file and converts it to base64

const file = fs.readFileSync(fileName);

const audioBytes = file.toString('base64');

// The audio file's encoding, sample rate in hertz, and BCP-47 language code

const audio = {

content: audioBytes,

};

const config = {

enableWordTimeOffsets: true,

encoding: 'MP3',

sampleRateHertz: 48000,

languageCode: 'en-US',

};

const request = {

audio: audio,

config: config,

};

// Detects speech in the audio file

const [response] = await client.recognize(request);

const transcription = response.results

.map(result => result.alternatives[0].transcript)

.join('\n');

console.log(`\n\nTranscription (whole): ${transcription}`);

console.log('\n------------------------------------ \n');

let formattedTranscript = '';

response.results.forEach(result => {

// get start time of first word

const wordInfo = result.alternatives[0].words[0]

const startSecs =

`${wordInfo.startTime.seconds}` +

`.` +

wordInfo.startTime.nanos / 100000000;

const endSecs =

`${wordInfo.endTime.seconds}` +

`.` +

wordInfo.endTime.nanos / 100000000;

// get speaker

const speaker = wordInfo.speakerTag || 1;

console.log(`Speaker #${speaker} [${startSecs} secs]`);

console.log(`\t\t\t${result.alternatives[0].transcript}`);

// formattedTranscript += `Speaker #${speaker} [${startSecs} secs]\n\t\t\t${result.alternatives[0].transcript}\n`;

// loop through words in each transcript line

// result.alternatives[0].words.forEach(wordInfo => {

// // NOTE: If you have a time offset exceeding 2^32 seconds, use the

// // wordInfo.{x}Time.seconds.high to calculate seconds.

// const startSecs =

// `${wordInfo.startTime.seconds}` +

// `.` +

// wordInfo.startTime.nanos / 100000000;

// const endSecs =

// `${wordInfo.endTime.seconds}` +

// `.` +

// wordInfo.endTime.nanos / 100000000;

// console.log(`Word: ${wordInfo.word}`);

// console.log(`\t ${startSecs} secs - ${endSecs} secs`);

// });

});

// write to formattedTranscript file

// storeData(response.results);

}

main().catch(console.error);