updating examples to work with both python and node.js

Author: nfriedly

.gitignore

@@ -7,3 +7,4 @@ test/resources/stt-auth.json
 test/resources/tts-auth.json
 doc/
 *-auth.json
+.env

examples/package.json

@@ -6,6 +6,7 @@
     "start": "node server.js"
   },
   "dependencies": {
+    "dotenv": "^2.0.0",
     "express": "^4.13.3",
     "vcap_services": "^0.1.7",
     "watson-developer-cloud": "^1.2.0",

examples/readme.md

@@ -19,8 +19,10 @@
 var express      = require('express'),
     app          = express();
 
-app.use(express.static(__dirname + '/public'));
-app.use(express.static(__dirname + '/../dist')); // normally these files would also go into public/ but this way the example always has the latest code
+// allows environment properties to be set in a file named .env
+require('dotenv').load();
+
+app.use(express.static(__dirname + '/static'));
 
 // token endpoints
 // **Warning**: these endpoints should be guarded with additional authentication & authorization for production use

examples/server.js

@@ -0,0 +1,45 @@
+import os, json
+from flask import Flask
+from watson_developer_cloud import AuthorizationV1 as Authorization
+from watson_developer_cloud import SpeechToTextV1 as SpeechToText
+from watson_developer_cloud import TextToSpeechV1 as TextToSpeech
+from dotenv import load_dotenv
+
+# Set the username and password below or in a .env file for local development
+load_dotenv('.env')
+
+# Text to Speech
+TTS_USERNAME = os.environ.get('TTS_USERNAME'); # '<Text to Speech username>'
+TTS_PASSWORD = os.environ.get('TTS_PASSWORD'); # '<Text to Speech password'
+
+# Speech to Text
+STT_USERNAME = os.environ.get('STT_USERNAME'); # '<Speech to Text username>'
+STT_PASSWORD = os.environ.get('STT_PASSWORD'); # '<Speech to Text password>'
+
+# on bluemix, automatically pull credentials from environment
+if 'VCAP_SERVICES' in os.environ:
+	stt = json.loads(os.environ['VCAP_SERVICES'])['speech_to_text'][0]
+	STT_USERNAME = stt["credentials"]["username"]
+	STT_PASSWORD = stt["credentials"]["password"]
+	tts = json.loads(os.environ['VCAP_SERVICES'])['text_to_speech'][0]
+	TTS_USERNAME = tts["credentials"]["username"]
+	TTS_PASSWORD = tts["credentials"]["password"]
+
+app = Flask(__name__, static_url_path='')
+
+@app.route('/')
+def root():
+  return app.send_static_file('index.html')
+
+@app.route('/api/speech-to-text/token')
+def getSttToken():
+	print(STT_USERNAME)
+	authorization = Authorization(username=STT_USERNAME, password=STT_PASSWORD)
+	return authorization.get_token(url=SpeechToText.default_url)
+
+@app.route('/api/text-to-speech/token')
+def getTtsToken():
+	authorization = Authorization(username=TTS_USERNAME, password=TTS_PASSWORD)
+	return authorization.get_token(url=TextToSpeech.default_url)
+
+app.run(debug=True)