From 825d2c4352022e7397854b2bd9ba7d3589873c07 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian@dold.me>
Date: Wed, 15 Feb 2023 23:32:42 +0100
Subject: make wallet-cli runnable under qtart

---
 packages/taler-wallet-core/src/host-impl.qtart.ts | 120 ++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 packages/taler-wallet-core/src/host-impl.qtart.ts

(limited to 'packages/taler-wallet-core/src/host-impl.qtart.ts')

diff --git a/packages/taler-wallet-core/src/host-impl.qtart.ts b/packages/taler-wallet-core/src/host-impl.qtart.ts
new file mode 100644
index 000000000..337914292
--- /dev/null
+++ b/packages/taler-wallet-core/src/host-impl.qtart.ts
@@ -0,0 +1,120 @@
+/*
+ This file is part of GNU Taler
+ (C) 2019 Taler Systems S.A.
+
+ GNU 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.
+
+ GNU 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
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ * Helpers to create headless wallets.
+ * @author Florian Dold <dold@taler.net>
+ */
+
+/**
+ * Imports.
+ */
+import type { IDBFactory } from "@gnu-taler/idb-bridge";
+// eslint-disable-next-line no-duplicate-imports
+import {
+  BridgeIDBFactory,
+  MemoryBackend,
+  shimIndexedDB,
+} from "@gnu-taler/idb-bridge";
+import { AccessStats } from "@gnu-taler/idb-bridge";
+import { SynchronousCryptoWorkerFactoryPlain } from "./crypto/workers/synchronousWorkerFactoryPlain.js";
+import { openTalerDatabase } from "./index.js";
+import { Logger } from "@gnu-taler/taler-util";
+import { createPlatformHttpLib } from "@gnu-taler/taler-util/http";
+import { SetTimeoutTimerAPI } from "./util/timer.js";
+import { Wallet } from "./wallet.js";
+import { qjsOs, qjsStd } from "@gnu-taler/taler-util/qtart";
+import { DefaultNodeWalletArgs, makeTempfileId } from "./host-common.js";
+
+const logger = new Logger("host-impl.qtart.ts");
+
+export async function createNativeWalletHost2(
+  args: DefaultNodeWalletArgs = {},
+): Promise<{
+  wallet: Wallet;
+  getDbStats: () => AccessStats;
+}> {
+  BridgeIDBFactory.enableTracing = false;
+  const myBackend = new MemoryBackend();
+  myBackend.enableTracing = false;
+
+  const storagePath = args.persistentStoragePath;
+  if (storagePath) {
+    const dbContentStr = qjsStd.loadFile(storagePath);
+    if (dbContentStr != null) {
+      const dbContent = JSON.parse(dbContentStr);
+      myBackend.importDump(dbContent);
+    }
+
+    myBackend.afterCommitCallback = async () => {
+      logger.trace("committing database");
+      // Allow caller to stop persisting the wallet.
+      if (args.persistentStoragePath === undefined) {
+        return;
+      }
+      const tmpPath = `${args.persistentStoragePath}-${makeTempfileId(5)}.tmp`;
+      const dbContent = myBackend.exportDump();
+      logger.trace("exported DB dump");
+      qjsStd.writeFile(tmpPath, JSON.stringify(dbContent, undefined, 2));
+      // Atomically move the temporary file onto the DB path.
+      const res = qjsOs.rename(tmpPath, args.persistentStoragePath);
+      if (res != 0) {
+        throw Error("db commit failed at rename");
+      }
+      logger.trace("committing database done");
+    };
+  }
+
+  logger.info("done processing storage path");
+
+  BridgeIDBFactory.enableTracing = false;
+
+  const myBridgeIdbFactory = new BridgeIDBFactory(myBackend);
+  const myIdbFactory: IDBFactory = myBridgeIdbFactory as any as IDBFactory;
+
+  let myHttpLib;
+  if (args.httpLib) {
+    myHttpLib = args.httpLib;
+  } else {
+    myHttpLib = createPlatformHttpLib();
+  }
+
+  const myVersionChange = (): Promise<void> => {
+    logger.error("version change requested, should not happen");
+    throw Error(
+      "BUG: wallet DB version change event can't happen with memory IDB",
+    );
+  };
+
+  shimIndexedDB(myBridgeIdbFactory);
+
+  const myDb = await openTalerDatabase(myIdbFactory, myVersionChange);
+
+  let workerFactory;
+  workerFactory = new SynchronousCryptoWorkerFactoryPlain();
+
+  const timer = new SetTimeoutTimerAPI();
+
+  const w = await Wallet.create(myDb, myHttpLib, timer, workerFactory);
+
+  if (args.notifyHandler) {
+    w.addNotificationListener(args.notifyHandler);
+  }
+  return {
+    wallet: w,
+    getDbStats: () => myBackend.accessStats,
+  };
+}
-- 
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