make user mobile num nullable if user has email_auth enabled

app/user/rest.py

@@ -4,6 +4,7 @@ from datetime import datetime
 from urllib.parse import urlencode
 
 from flask import (jsonify, request, Blueprint, current_app, abort)
+from sqlalchemy.exc import IntegrityError
 
 from app.config import QueueNames
 from app.dao.users_dao import (
@@ -52,6 +53,19 @@ user_blueprint = Blueprint('user', __name__)
 register_errors(user_blueprint)
 
 
+@user_blueprint.errorhandler(IntegrityError)
+def handle_integrity_error(exc):
+    """
+    Handle integrity errors caused by the auth type/mobile number check constraint
+    """
+    if 'ck_users_mobile_or_email_auth' in str(exc):
+        # we don't expect this to trip, so still log error
+        current_app.logger.exception('Check constraint ck_users_mobile_or_email_auth triggered')
+        return jsonify(result='error', message='Mobile number must be set if auth_type is set to sms_auth'), 400
+
+    raise
+
+
 @user_blueprint.route('', methods=['POST'])
 def create_user():
     user_to_create, errors = user_schema.load(request.get_json())