first pass, non-working

realms/modules/auth/oauth/models.py

@@ -0,0 +1,36 @@
+from flask import render_template
+from flask_oauthlib.client import OAuth
+from realms import config
+from ..models import BaseUser
+
+oauth = OAuth()
+
+
+class OAuthUser(BaseUser):
+    # OAuth remote app
+    app = None
+
+
+class TwitterUser(OAuthUser):
+
+    app = oauth.remote_app(
+        'twitter',
+        base_url='https://api.twitter.com/1/',
+        request_token_url='https://api.twitter.com/oauth/request_token',
+        access_token_url='https://api.twitter.com/oauth/access_token',
+        authorize_url='https://api.twitter.com/oauth/authenticate',
+        consumer_key=config.TWITTER_KEY,
+        consumer_secret=config.TWITTER_SECRET)
+
+    def __init__(self, id_, username, email=None):
+        self.id = id_
+        self.username = username
+        self.email = email
+
+    @staticmethod
+    def load_user(*args, **kwargs):
+        return TwitterUser(args[0])
+
+    @staticmethod
+    def login_form():
+        return render_template('auth/oauth/twitter.html')

realms/modules/auth/oauth/views.py

@@ -0,0 +1,30 @@
+from flask import Blueprint, url_for, request, flash, redirect
+from .models import TwitterUser
+
+blueprint = Blueprint('auth.oauth', __name__)
+
+
+def oauth_failed(next_url):
+    flash(u'You denied the request to sign in.')
+    return redirect(next_url)
+
+@blueprint.route("/login/twitter")
+def login_twitter():
+    return TwitterUser.app.authorize(callback=url_for('twitter_callback',
+                                                      next=request.args.get('next') or request.referrer or None))
+
+@blueprint.route('/login/twitter/callback')
+def twitter_callback():
+    next_url = request.args.get('next') or url_for('index')
+    resp = TwitterUser.app.authorized_response()
+    if resp is None:
+        return oauth_failed(next_url)
+
+    session['twitter_token'] = (
+        resp['oauth_token'],
+        resp['oauth_token_secret']
+    )
+    session['twitter_user'] = resp['screen_name']
+
+    flash('You were signed in as %s' % resp['screen_name'])
+    return redirect(next_url)