michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 'use strict';
michael@0: 
michael@0: module.metadata = {
michael@0:   "stability": "stable"
michael@0: };
michael@0: 
michael@0: const { search, remove, store } = require("./passwords/utils");
michael@0: const { defer, delay } = require("./lang/functional");
michael@0: 
michael@0: /**
michael@0:  * Utility function that returns `onComplete` and `onError` callbacks form the
michael@0:  * given `options` objects. Also properties are removed from the passed
michael@0:  * `options` objects.
michael@0:  * @param {Object} options
michael@0:  *    Object that is passed to the exported functions of this module.
michael@0:  * @returns {Function[]}
michael@0:  *    Array with two elements `onComplete` and `onError` functions.
michael@0:  */
michael@0: function getCallbacks(options) {
michael@0:   let value = [
michael@0:     'onComplete' in options ? options.onComplete : null,
michael@0:     'onError' in options ? defer(options.onError) : console.exception
michael@0:   ];
michael@0: 
michael@0:   delete options.onComplete;
michael@0:   delete options.onError;
michael@0: 
michael@0:   return value;
michael@0: };
michael@0: 
michael@0: /**
michael@0:  * Creates a wrapper function that tries to call `onComplete` with a return
michael@0:  * value of the wrapped function or falls back to `onError` if wrapped function
michael@0:  * throws an exception.
michael@0:  */
michael@0: function createWrapperMethod(wrapped) {
michael@0:   return function (options) {
michael@0:     let [ onComplete, onError ] = getCallbacks(options);
michael@0:     try {
michael@0:       let value = wrapped(options);
michael@0:       if (onComplete) {
michael@0:         delay(function() {
michael@0:           try {
michael@0:             onComplete(value);
michael@0:           } catch (exception) {
michael@0:             onError(exception);
michael@0:           }
michael@0:         });
michael@0:       }
michael@0:     } catch (exception) {
michael@0:       onError(exception);
michael@0:     }
michael@0:   };
michael@0: }
michael@0: 
michael@0: exports.search = createWrapperMethod(search);
michael@0: exports.store = createWrapperMethod(store);
michael@0: exports.remove = createWrapperMethod(remove);