ValidatorService.js

ValidatorService.js

(function() {
  'use strict';

  angular
    .module('auth')
    .factory('Validator', Validator);

  Validator.$inject = ['$q', '$timeout'];

  function Validator($q, $timeout) {
    let _model = {}, _collections = {};

    function bind(ctrlModel) {
      _model = ctrlModel;
    }

    function getModel() {
      return _model;
    }

    function Validation(rule, errMessage) {

      return {
        run: function() {
          return rule();
        },

        message: errMessage || '',
      };
    }

    function addRule(rule, errMessage) {
      return new Validation(rule, errMessage);
    }

    function addCollection(collectionName, rules) {
      _collections[collectionName] = rules || [];
    }

    function validate(collectionName) {
      let defer = $q.defer();

      $timeout(() => {
        _collections[collectionName].forEach((rule, i) => {
          if (!rule.run()) return defer.reject(rule.message);
        });

        defer.resolve();
      }, 100);

      return defer.promise;
    }

    return {
      model: _model,
      getModel: getModel,
      addCollection: addCollection,
      bind: bind,
      addRule: addRule,
      validate: validate,
    };
  }
})();