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window.angular && (function(angular) {
'use strict';
/**
* Username validator
*
* Checks if entered username is a duplicate
* Provide existingUsernames scope that should be an array of
* existing usernames
*
* <input username-validator existing-usernames="[]"/>
*
*/
angular.module('app.accessControl')
.directive('usernameValidator', function() {
return {
restrict: 'A', require: 'ngModel', scope: {existingUsernames: '='},
link: function(scope, element, attrs, controller) {
if (scope.existingUsernames === undefined) {
return;
}
controller.$validators.duplicateUsername =
(modelValue, viewValue) => {
const enteredUsername = modelValue || viewValue;
const matchedExisting = scope.existingUsernames.find(
(username) => username === enteredUsername);
if (matchedExisting) {
return false;
} else {
return true;
}
};
element.on('blur', () => {
controller.$validate();
});
}
}
});
})(window.angular);
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