Trakt TV Node Authentication

trakt-auth.js

// Open a file in disk with promise
const getJson = (filename) => {
	return new Promise((resolve, reject) => {
		jsonfile.readFile(filename, function(err, obj) {
			if (err) { reject(err); }
      resolve(obj);			
		});
	});
};

// Save a File in disk with promise
const saveJson = (obj, fileName) => {
	return new Promise((resolve, reject) => {
		jsonfile.writeFile(fileName, obj, {spaces: 2, EOL: '\r\n'}, function(err) {
			if (err) { reject(err); }
			resolve(obj);
		});
	});
};

// try to get token from json file from disk
getJson("myToken.json")
	.then(token => {
  
		// If token is empty, get a new one using Trakt Device Authentication
		if (_.isEmpty(token)) {
			return trakt.get_codes().then(poll => {
				console.log("Please visit in a browser: " + poll.verification_url);
				console.log("Use de code: " + poll.user_code);
				console.log("I'll wait for you ;)");

				// verify if app was authorized
				return trakt.poll_access(poll);
			});
		}
  
		// injects back stored token on new session.
		return trakt.import_token(token);
  
	}).then(newTokens => {
  
		// Contains token, refreshed if needed (store it back)
		return saveJson(newTokens, "myToken.json");
  
	}).then(() => {
  
    // Get my user to check Trakt is logged in
		return trakt.users.profile({
			username: 'me',
			extended: 'full'
		});
  
	}).then(profile => {
  
		_debug("MyTrakt: Logged in");
		console.log("Welcome " + profile.data.username);
		// console.log(profile);
  
	}).catch(console.log);