# Copyright 2015 Google Inc. All Rights Reserved.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# [START app]

import logging

import os

from flask import Flask, request

from twilio import twiml

from twilio.rest import TwilioRestClient

# [START configuration]

TWILIO_ACCOUNT_SID = os.environ['TWILIO_ACCOUNT_SID']

TWILIO_AUTH_TOKEN = os.environ['TWILIO_AUTH_TOKEN']

TWILIO_NUMBER = os.environ['TWILIO_NUMBER']

# [END configuration]

app = Flask(__name__)

# [START receive_call]

@app.route('/call/receive', methods=['POST'])

def receive_call():

"""Answers a call and replies with a simple greeting."""

response = twiml.Response()

response.say('Hello from Twilio!')

return str(response), 200, {'Content-Type': 'application/xml'}

# [END receive_call]

# [START send_sms]

@app.route('/sms/send')

def send_sms():

"""Sends a simple SMS message."""

to = request.args.get('to')

if not to:

return ('Please provide the number to message in the "to" query string'

' parameter.'), 400

client = TwilioRestClient(TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN)

rv = client.messages.create(

to=to,

from_=TWILIO_NUMBER,

body='Hello from Twilio!')

return str(rv)

# [END send_sms]

# [START receive_sms]

@app.route('/sms/receive', methods=['POST'])

def receive_sms():

"""Receives an SMS message and replies with a simple greeting."""

sender = request.values.get('From')

body = request.values.get('Body')

message = 'Hello, {}, you said: {}'.format(sender, body)

response = twiml.Response()

response.message(message)

return str(response), 200, {'Content-Type': 'application/xml'}

# [END receive_sms]

@app.errorhandler(500)

def server_error(e):

logging.exception('An error occurred during a request.')

return """

An internal error occurred: <pre>{}</pre>

See logs for full stacktrace.

""".format(e), 500

if __name__ == '__main__':

# This is used when running locally. Gunicorn is used to run the

# application on Google App Engine. See entrypoint in app.yaml.

app.run(host='127.0.0.1', port=8080, debug=True)

# [END app]