wp-pwa-sample-validate-categories

validation.service.js

angular.module('appticles.validation')
  .factory('AppticlesValidation', AppticlesValidation);


/**
 * @ngdoc service
 * @name appticles.validation.AppticlesValidation
 *
 * @description Service for validating data coming from the API.
 */
function AppticlesValidation() {

  let service = {
    validateCategories: validateCategories,
    ...
  };

  return service;
  
   /**
   * @ngdoc function
   * @name appticles.validation.AppticlesValidation#validateCategories
   * @methodOf appticles.validation.AppticlesValidation
   * @description Validate categories data
   *
   * @return {Array} An array of category objects
   *
   * {@link https://developer.wordpress.org/rest-api/reference/categories/#list-categorys}
   */
  function validateCategories(input) {

    if(angular.isObject(input) && !angular.isArray(input)) {
      if (angular.isDefined(input.data)) {

        if (input.data.length === 0) {
          return [];
        }

        let validatedCategories = input.data.map(_checkOneCategories);

        if (validatedCategories.indexOf(false) === -1) {
          return validatedCategories;
        }
      }
    }

    return { 'error': 'Invalid data' };
  }
  
  /**
   * @ngdoc function
   * @name appticles.validation.AppticlesValidation#checkOneCategories
   * @methodOf appticles.validation.AppticlesValidation
   * @description Validate a single category object.
   *
   * @return {Boolean|Object} Return the category if it's valid, false otherwise.
   *
   * {@link https://developer.wordpress.org/rest-api/reference/categories/#schema}
   */
  function _checkOneCategories(category) {

    if (angular.isDefined(category.id) && /^[a-z0-9]+$/i.test(category.id) &&
      angular.isDefined(category.name) &&  angular.isString(category.name) &&
      angular.isDefined(category.slug) && angular.isString(category.slug) &&
      angular.isDefined(category.link) && angular.isString(category.link) &&
      (angular.isUndefined(category.parent) || /^[a-z0-9]+$/i.test(category.parent) )) {

      return {
        id: category.id,
        name: category.name,
        slug: category.slug,
        link: category.link,
        parent: category.parent
      };
    }

    return false;
  }
}