To lower case watson

tts/watson/index.js

@@ -0,0 +1,50 @@
+const BaseEngine = require('../BaseEngine');
+const fetch = require('node-fetch');
+const querystring = require('querystring');
+
+module.exports = class extends BaseEngine {
+	constructor() {
+		super('watson',"IBM Watson TTS", "ogg");
+		this.voices = {};
+		this.populateVoiceList();
+	}
+	async populateVoiceList() {
+		const url = process.env.watsonURL + "/v1/voices";
+		const authorization = this.IBMAuthString();
+		const opts = {
+			method: "get",
+			headers: {
+				'Authorization': authorization
+			},
+		}
+		const res = await fetch(url, opts);
+		const voices = await res.json();
+		voices.voices.forEach((i) => {
+			let voiceName = i.description.substring(0, i.description.indexOf(':')).toLowerCase();
+			this.voices[voiceName] = i.name;
+		});
+	}
+	getDefaultVoice() {
+		return 'Michael';
+	}
+	IBMAuthString() {
+		let buff = new Buffer('apikey:' + process.env.watsonAPIKey);
+		let b64auth = buff.toString('base64');
+		return 'Basic ' + b64auth;
+	}
+	async getSpeech(text, voice = this.getSpeechVoice(), params = {}) {
+		const url = process.env.watsonURL + "/v1/synthesize?voice=" + this.getInternalVoiceName(voice);
+		const authorization = this.IBMAuthString();
+		const opts = {
+			method: "post",
+			headers: {
+				'Content-Type': 'application/json',
+				'Authorization': authorization
+			},
+			body: JSON.stringify({
+				text: text
+			})
+		};
+		return fetch(url, opts);
+	}
+};