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|
/*global angular */
/**
* Services that persists and retrieves todos from memory or a backend API
* if available.
*
* They both follow the same API, returning promises for all changes to the
* model.
*/
angular.module('todomvc')
.factory('todoStorage', function ($http, $injector) {
'use strict';
return Promise.resolve().then(function() {
return $injector.get('localCache');
});
})
.factory('localCache', function ($q) {
'use strict';
var STORAGE_ID = 'todos-angularjs';
var store = {
todos: [],
cache: [],
_getFromLocalCache: function () {
// return JSON.parse(this.cache[STORAGE_ID] || '[]');
return [];
},
_saveToLocalCache: function (todos) {
// this.cache[STORAGE_ID] = JSON.stringify(todos);
return;
},
clearCompleted: function () {
var deferred = $q.defer();
var incompleteTodos = store.todos.filter(function (todo) {
return !todo.completed;
});
angular.copy(incompleteTodos, store.todos);
store._saveToLocalCache(store.todos);
deferred.resolve(store.todos);
return deferred.promise;
},
delete: function (todo) {
var deferred = $q.defer();
store.todos.splice(store.todos.indexOf(todo), 1);
store._saveToLocalCache(store.todos);
deferred.resolve(store.todos);
return deferred.promise;
},
get: function () {
var deferred = $q.defer();
angular.copy(store._getFromLocalCache(), store.todos);
deferred.resolve(store.todos);
return deferred.promise;
},
insert: function (todo) {
var deferred = $q.defer();
store.todos.push(todo);
store._saveToLocalCache(store.todos);
deferred.resolve(store.todos);
return deferred.promise;
},
put: function (todo, index) {
var deferred = $q.defer();
store.todos[index] = todo;
store._saveToLocalCache(store.todos);
deferred.resolve(store.todos);
return deferred.promise;
}
};
return store;
});
|
