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/*
This file is part of TALER
(C) 2016 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
"use strict";
import Dictionary = _.Dictionary;
/**
* Declarations and helpers for
* things that are stored in the wallet's
* database.
* @module Db
* @author Florian Dold
*/
const DB_NAME = "taler";
const DB_VERSION = 7;
/**
* Return a promise that resolves
* to the taler wallet db.
*/
export function openTalerDb(): Promise<IDBDatabase> {
return new Promise((resolve, reject) => {
const req = indexedDB.open(DB_NAME, DB_VERSION);
req.onerror = (e) => {
reject(e);
};
req.onsuccess = (e) => {
resolve(req.result);
};
req.onupgradeneeded = (e) => {
const db = req.result;
console.log("DB: upgrade needed: oldVersion = " + e.oldVersion);
switch (e.oldVersion) {
case 0: // DB does not exist yet
const exchanges = db.createObjectStore("exchanges",
{keyPath: "baseUrl"});
exchanges.createIndex("pubKey", "masterPublicKey");
db.createObjectStore("reserves", {keyPath: "reserve_pub"});
const coins = db.createObjectStore("coins", {keyPath: "coinPub"});
coins.createIndex("exchangeBaseUrl", "exchangeBaseUrl");
const transactions = db.createObjectStore("transactions",
{keyPath: "contractHash"});
transactions.createIndex("repurchase",
[
"contract.merchant_pub",
"contract.repurchase_correlation_id"
]);
db.createObjectStore("precoins",
{keyPath: "coinPub", autoIncrement: true});
const history = db.createObjectStore("history",
{
keyPath: "id",
autoIncrement: true
});
history.createIndex("timestamp", "timestamp");
break;
default:
if (e.oldVersion != DB_VERSION) {
window.alert("Incompatible wallet dababase version, please reset" +
" db.");
chrome.browserAction.setBadgeText({text: "R!"});
chrome.browserAction.setBadgeBackgroundColor({color: "#F00"});
throw Error("incompatible DB");
}
break;
}
};
});
}
export function exportDb(db: IDBDatabase): Promise<any> {
let dump = {
name: db.name,
version: db.version,
stores: {} as Dictionary<any>,
};
return new Promise((resolve, reject) => {
let tx = db.transaction(Array.from(db.objectStoreNames));
tx.addEventListener("complete", () => {
resolve(dump);
});
for (let i = 0; i < db.objectStoreNames.length; i++) {
let name = db.objectStoreNames[i];
let storeDump = {} as Dictionary<any>;
dump.stores[name] = storeDump;
let store = tx.objectStore(name)
.openCursor()
.addEventListener("success", (e: Event) => {
let cursor = (e.target as any).result;
if (cursor) {
storeDump[cursor.key] = cursor.value;
cursor.continue();
}
});
}
});
}
export function deleteDb() {
indexedDB.deleteDatabase(DB_NAME);
}
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