60 lines
1.5 KiB
JavaScript
60 lines
1.5 KiB
JavaScript
"use strict";
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// SCHEMA
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// id: 'sha1 hash',
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// dataURI: '...'
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function AvatarStorage(storage) {
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this.storage = storage;
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}
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AvatarStorage.prototype = {
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constructor: {
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value: AvatarStorage
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},
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setup: function (db) {
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db.createObjectStore('avatars', {
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keyPath: 'id'
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});
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},
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transaction: function (mode) {
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var trans = this.storage.db.transaction('avatars', mode);
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return trans.objectStore('avatars');
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},
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add: function (avatar, cb) {
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cb = cb || function () {};
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var request = this.transaction('readwrite').put(avatar);
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request.onsuccess = function () {
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cb(false, avatar);
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};
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request.onerror = cb;
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},
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get: function (id, cb) {
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cb = cb || function () {};
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if (!id) {
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return cb('not-found');
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}
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var request = this.transaction('readonly').get(id);
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request.onsuccess = function (e) {
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var res = request.result;
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if (res === undefined) {
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return cb('not-found');
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}
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cb(false, request.result);
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};
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request.onerror = cb;
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},
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remove: function (id, cb) {
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cb = cb || function () {};
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var request = this.transaction('readwrite')['delete'](id);
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request.onsuccess = function (e) {
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cb(false, request.result);
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};
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request.onerror = cb;
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}
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};
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module.exports = AvatarStorage;
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