[WIP] Start of api for accepting invite.

app/accept_invite/rest.py

@@ -0,0 +1,41 @@
+from flask import (
+    Blueprint,
+    jsonify,
+    current_app
+)
+
+from itsdangerous import SignatureExpired
+
+from utils.url_safe_token import check_token
+
+from app.dao.invited_user_dao import get_invited_user_by_id
+
+from app.errors import register_errors
+from app.schemas import invited_user_schema
+
+
+accept_invite = Blueprint('accept_invite', __name__)
+register_errors(accept_invite)
+
+
+@accept_invite.route('/<token>', methods=['GET'])
+def get_invited_user_by_token(token):
+
+    max_age_seconds = 60 * 60 * 24 * current_app.config['INVITATION_EXPIRATION_DAYS']
+
+    try:
+        invited_user_id = check_token(token,
+                                      current_app.config['SECRET_KEY'],
+                                      current_app.config['DANGEROUS_SALT'],
+                                      max_age_seconds)
+    except SignatureExpired:
+        message = 'Invitation with id {} expired'.format(invited_user_id)
+        return jsonify(result='error', message=message), 400
+
+    invited_user = get_invited_user_by_id(invited_user_id)
+
+    if not invited_user:
+        message = 'Invited user not found with id: {}'.format(invited_user_id)
+        return jsonify(result='error', message=message), 404
+
+    return jsonify(data=invited_user_schema.dump(invited_user).data), 200