1 files changed, 97 insertions, 0 deletions
diff --git a/extension/lib/wallet/db.ts b/extension/lib/wallet/db.ts
new file mode 100644
index 000000000..a208f0923
--- /dev/null
+++ b/extension/lib/wallet/db.ts
@@ -0,0 +1,97 @@
+/*
+ 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, If not, see <http://www.gnu.org/licenses/>
+ */
+
+"use strict";
+
+/**
+ * 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 = 1;
+
+/**
+ * Return a promise that resolves
+ * to the taler wallet db.
+ */
+export function openTalerDb(): Promise<IDBDatabase> {
+  return new Promise((resolve, reject) => {
+    let req = indexedDB.open(DB_NAME, DB_VERSION);
+    req.onerror = (e) => {
+      reject(e);
+    };
+    req.onsuccess = (e) => {
+      resolve(req.result);
+    };
+    req.onupgradeneeded = (e) => {
+      let db = req.result;
+      console.log("DB: upgrade needed: oldVersion = " + e.oldVersion);
+      switch (e.oldVersion) {
+        case 0: // DB does not exist yet
+          let mints = db.createObjectStore("mints", {keyPath: "baseUrl"});
+          mints.createIndex("pubKey", "keys.master_public_key");
+          db.createObjectStore("reserves", {keyPath: "reserve_pub"});
+          db.createObjectStore("denoms", {keyPath: "denomPub"});
+          let coins = db.createObjectStore("coins", {keyPath: "coinPub"});
+          coins.createIndex("mintBaseUrl", "mintBaseUrl");
+          db.createObjectStore("transactions", {keyPath: "contractHash"});
+          db.createObjectStore("precoins",
+                               {keyPath: "coinPub", autoIncrement: true});
+          db.createObjectStore("history", {keyPath: "id", autoIncrement: true});
+          break;
+      }
+    };
+  });
+}
+
+
+export function exportDb(db): Promise<any> {
+  let dump = {
+    name: db.name,
+    version: db.version,
+    stores: {}
+  };
+
+  return new Promise((resolve, reject) => {
+
+    let tx = db.transaction(db.objectStoreNames);
+    tx.addEventListener("complete", (e) => {
+      resolve(dump);
+    });
+    for (let i = 0; i < db.objectStoreNames.length; i++) {
+      let name = db.objectStoreNames[i];
+      let storeDump = {};
+      dump.stores[name] = storeDump;
+      let store = tx.objectStore(name)
+                    .openCursor()
+                    .addEventListener("success", (e) => {
+                      let cursor = e.target.result;
+                      if (cursor) {
+                        storeDump[cursor.key] = cursor.value;
+                        cursor.continue();
+                      }
+                    });
+    }
+  });
+}
+
+export function deleteDb() {
+  indexedDB.deleteDatabase(DB_NAME);
+}
+\ No newline at end of file