(function() {
    'use strict';

    angular.module('shared')

        .filter('camelcase', [function() {
            var CAMEL_CASE_REGEX = /(?:[^a-z0-9]+|^)([a-z])([a-z0-9]*)/gi;

            function camelcaseReplacer(match, first, rest, offset) {
                return (offset > 0 ? first.toUpperCase() : first.toLowerCase()) + rest.toLowerCase()
            }

            return function camelcaseFilter(string) {
                if(!angular.isString(string)) return string;

                return string.trim().replace(CAMEL_CASE_REGEX, camelcaseReplacer)
            }
        }]);
})();