(function() {
    'use strict';

    angular.module('angularGobox').factory('AddressValidator', AddressValidatorFactory);

    function AddressValidatorFactory() {
        function AddressValidator(address) {
            this.address = addEmptyValues(address);
        }

        AddressValidator.requiredFields = ['name', 'address1', 'postal_code', 'city'];
        AddressValidator.addressFields = ['name', 'tlf', 'address1', 'postal_code', 'city'];

        AddressValidator.prototype.invalidFields = function() {
            var fields = _.pick(this.address, AddressValidator.requiredFields);
            return _.reduce(fields, function(arr, val, key) {
                if (!val) arr.push(key);
                return arr;
            }, []);
        }

        AddressValidator.prototype.valid = function() {
            return this.invalidFields().length == 0;
        };

        function addEmptyValues(address) {
            return angular.extend(_.reduce(AddressValidator.addressFields, function(obj, key) {
                obj[key] = ''; return obj;
            }, {}), address);
        }

        return AddressValidator;
    }
})();