mirror of https://github.com/moparisthebest/mail
94 lines
2.2 KiB
JavaScript
94 lines
2.2 KiB
JavaScript
'use strict';
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var ngModule = angular.module('woServices');
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ngModule.service('deviceStorage', DeviceStorage);
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module.exports = DeviceStorage;
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/**
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* High level storage api that handles all persistence on the device.
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*/
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function DeviceStorage(localDbDao) {
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this._localDbDao = localDbDao;
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}
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DeviceStorage.prototype.init = function(emailAddress, callback) {
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this._localDbDao.init(emailAddress, callback);
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};
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/**
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* Stores a list of encrypted items in the object store
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* @param list [Array] The list of items to be persisted
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* @param type [String] The type of item to be persisted e.g. 'email'
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*/
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DeviceStorage.prototype.storeList = function(list, type, callback) {
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var key, items = [];
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// nothing to store
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if (!list || list.length === 0) {
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callback();
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return;
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}
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// validate type
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if (!type) {
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callback({
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errMsg: 'Type is not set!'
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});
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return;
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}
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// format items for batch storing in dao
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list.forEach(function(i) {
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key = createKey(i, type);
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items.push({
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key: key,
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object: i
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});
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});
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this._localDbDao.batch(items, callback);
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};
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/**
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* Deletes items of a certain type from storage
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*/
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DeviceStorage.prototype.removeList = function(type, callback) {
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this._localDbDao.removeList(type, callback);
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};
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/**
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* List stored items of a given type
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* @param type [String] The type of item e.g. 'email'
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* @param offset [Number] The offset of items to fetch (0 is the last stored item)
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* @param num [Number] The number of items to fetch (null means fetch all)
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*/
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DeviceStorage.prototype.listItems = function(type, offset, num, callback) {
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// fetch all items of a certain type from the data-store
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this._localDbDao.list(type, offset, num, callback);
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};
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/**
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* Clear the whole device data-store
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*/
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DeviceStorage.prototype.clear = function(callback) {
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this._localDbDao.clear(callback);
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};
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//
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// helper functions
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//
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function createKey(i, type) {
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var key;
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// put uid in key if available... for easy querying
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if (i.uid) {
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key = type + '_' + i.uid;
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} else if (i.id) {
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key = type + '_' + i.id;
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} else {
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key = type;
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}
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return key;
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} |