1 files changed, 119 insertions, 0 deletions
diff --git a/lib/wallet/db.ts b/lib/wallet/db.ts
new file mode 100644
index 000000000..5104f28fb
--- /dev/null
+++ b/lib/wallet/db.ts
@@ -0,0 +1,119 @@
+/*
+ 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);
+}
+\ No newline at end of file