[WIP] Start of user accepting invite.

This commit only deals with acceptance by
users who are already in system.

Changed invite client to return invited user objects
instead of dictionaries.

Added commented out test. fixed up fixtures to return invited user
object for invites

app/main/__init__.py

@@ -3,7 +3,24 @@ from flask import Blueprint
 main = Blueprint('main', __name__)
 
 from app.main.views import (
-    index, sign_in, sign_out, register, two_factor, verify, send, add_service,
-    code_not_received, jobs, dashboard, templates, service_settings, forgot_password,
-    new_password, styleguide, user_profile, choose_service, api_keys, manage_users
+    index,
+    sign_in,
+    sign_out,
+    register,
+    two_factor,
+    verify,
+    send,
+    add_service,
+    code_not_received,
+    jobs, dashboard,
+    templates,
+    service_settings,
+    forgot_password,
+    new_password,
+    styleguide,
+    user_profile,
+    choose_service,
+    api_keys,
+    manage_users,
+    invites
 )

app/main/views/invites.py

@@ -0,0 +1,34 @@
+from flask import (
+    redirect,
+    url_for,
+    abort
+)
+
+from notifications_python_client.errors import HTTPError
+
+from app.main import main
+from app import (
+    invite_api_client,
+    user_api_client
+)
+
+
+@main.route("/invitation/<token>")
+def accept_invite(token):
+    try:
+        invited_user = invite_api_client.accept_invite(token)
+        existing_user = user_api_client.get_user_by_email(invited_user['email_address'])
+
+        if existing_user:
+            user_api_client.add_user_to_service(invited_user['service'],
+                                                existing_user.id,
+                                                invited_user)
+            return redirect(url_for('main.service_dashboard', service_id=invited_user['service']))
+        else:
+            # TODO implement registration flow for new users
+            abort(404)
+    except HTTPError as e:
+        if e.status_code == 404:
+            abort(404)
+        else:
+            raise e

app/main/views/manage_users.py

@@ -58,8 +58,8 @@ def invite_user(service_id):
         email_address = form.email_address.data
         permissions = _get_permissions(request.form)
         try:
-            resp = invite_api_client.create_invite(current_user.id, service_id, email_address, permissions)
-            flash('Invite sent to {}'.format(resp['email_address']), 'default_with_tick')
+            invited_user = invite_api_client.create_invite(current_user.id, service_id, email_address, permissions)
+            flash('Invite sent to {}'.format(invited_user.email_address), 'default_with_tick')
             return redirect(url_for('.manage_users', service_id=service_id))
 
         except HTTPError as e: