Flask application to demonstrate authenticating with the Campaign Monitor API using OAuth. Uses the createsend, Flask, and Flask-OAuth packages.

app.py

# 1. Set CREATESEND_CLIENT_ID and CREATESEND_CLIENT_SECRET environment
#    variables for your registered OAuth application. Also set SESSION_SECRET
#    environment variable for Flask.
# 2. `pip install -r requirements.txt`
# 3. `python app.py`

import os
from flask import Flask, render_template, request, redirect, url_for
from flask_oauth import OAuth
from createsend import *
import json

app = Flask(__name__)
app.config['SECRET_KEY'] = os.environ['SESSION_SECRET']

oauth = OAuth()
campaign_monitor = oauth.remote_app('campaign monitor',
  base_url='https://api.createsend.com',
  request_token_url=None,
  access_token_url='/oauth/token',
  authorize_url='/oauth',
  consumer_key=os.environ['CREATESEND_CLIENT_ID'],
  consumer_secret=os.environ['CREATESEND_CLIENT_SECRET'],
  request_token_params={'type': 'web_server', 'scope': 'ViewReports,CreateCampaigns,SendCampaigns'},
  access_token_params={'grant_type': 'authorization_code'},
  access_token_method='POST'
)

@app.route('/')
def login():
  return campaign_monitor.authorize(
    callback=url_for('oauth_authorized', _external=True))

@app.route('/oauth_authorized')
@campaign_monitor.authorized_handler
def oauth_authorized(resp):
  access_token = resp['access_token']
  refresh_token = resp['refresh_token']
  expires_in = resp['expires_in']

  response = "<pre>"
  response += "Your user is successfully authenticated. Here are the details you need:<br/><br/>"
  response += "access token: %s<br/>" % access_token
  response += "refresh token: %s<br/>" % refresh_token
  response += "expires in: %s<br/>" % expires_in
  response += "<br/><br/>"

  cs = CreateSend()
  cs.auth({
    'access_token': access_token,
    'refresh_token': refresh_token })
  clients = cs.clients()

  response += "We've made an API call too. Here are your clients:<br/><br/>"
  for c in clients:
    response += "%s (%s)<br/>" % (c.Name, c.ClientID)
  response += "</pre>"
  return response

if __name__ == '__main__':
  port = int(os.environ.get('PORT', 5000))
  app.run(host='0.0.0.0', port=port, debug=True)

Procfile

web: python app.py

requirements.txt

Flask==0.9
Flask-OAuth==0.12
Jinja2==2.6
Werkzeug==0.8.3
createsend
httplib2==0.7.7
oauth2==1.5.211
wsgiref==0.1.2