[taler-wallet-core] 01/02: -qjs fixes

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dold pushed a commit to branch master
in repository wallet-core.

commit f26cbe7c1f10d2d6430c9f444342180d1445ed33
Author: Florian Dold <florian@dold.me>
AuthorDate: Tue Jan 3 10:51:05 2023 +0100

    -qjs fixes
---
 packages/taler-wallet-core/src/wallet.ts         |   2 +-
 packages/taler-wallet-embedded/build.mjs         |   2 +-
 packages/taler-wallet-embedded/src/wallet-qjs.ts | 106 +++++++++++++----------
 3 files changed, 61 insertions(+), 49 deletions(-)

diff --git a/packages/taler-wallet-core/src/wallet.ts 
b/packages/taler-wallet-core/src/wallet.ts
index 2167de534..f442e678a 100644
--- a/packages/taler-wallet-core/src/wallet.ts
+++ b/packages/taler-wallet-core/src/wallet.ts
@@ -1632,7 +1632,7 @@ class InternalWalletStateImpl implements 
InternalWalletState {
   }
 
   notify(n: WalletNotification): void {
-    logger.trace("Notification", n);
+    logger.trace("Notification", j2s(n));
     for (const l of this.listeners) {
       const nc = JSON.parse(JSON.stringify(n));
       setTimeout(() => {
diff --git a/packages/taler-wallet-embedded/build.mjs 
b/packages/taler-wallet-embedded/build.mjs
index 0f12ef2c6..537a4fbc0 100755
--- a/packages/taler-wallet-embedded/build.mjs
+++ b/packages/taler-wallet-embedded/build.mjs
@@ -51,7 +51,7 @@ export const buildConfig = {
   target: [
     'es2020'
   ],
-  external: ["os"],
+  external: ["os", "std"],
   format: 'esm',
   platform: 'neutral',
   mainFields: ["module", "main"],
diff --git a/packages/taler-wallet-embedded/src/wallet-qjs.ts 
b/packages/taler-wallet-embedded/src/wallet-qjs.ts
index a9c314c6d..4c39e6188 100644
--- a/packages/taler-wallet-embedded/src/wallet-qjs.ts
+++ b/packages/taler-wallet-embedded/src/wallet-qjs.ts
@@ -21,8 +21,6 @@ import {
   AccessStats,
   DefaultNodeWalletArgs,
   getErrorDetailFromException,
-  handleWorkerError,
-  handleWorkerMessage,
   Headers,
   HttpRequestLibrary,
   HttpRequestOptions,
@@ -51,6 +49,8 @@ import { shimIndexedDB } from "@gnu-taler/idb-bridge";
 import { IDBFactory } from "@gnu-taler/idb-bridge";
 
 import * as _qjsOsImp from "os";
+// @ts-ignore
+import * as _qjsStdImp from "std";
 
 const textDecoder = new TextDecoder();
 const textEncoder = new TextEncoder();
@@ -80,12 +80,20 @@ export interface QjsHttpOptions {
 export interface QjsOsLib {
   // Not async!
   fetchHttp(url: string, options?: QjsHttpOptions): QjsHttpResp;
+  postMessageToHost(s: string): void;
+  setMessageFromHostHandler(h: (s: string) => void): void;
+  rename(oldPath: string, newPath: string): number;
+}
+
+export interface QjsStdLib {
+  writeFile(filename: string, contents: string): void;
+  loadFile(filename: string): string;
 }
 
 // This is not the nodejs "os" module, but the qjs "os" module.
 const qjsOs: QjsOsLib = _qjsOsImp as any;
 
-export { handleWorkerError, handleWorkerMessage };
+const qjsStd: QjsStdLib = _qjsStdImp as any;
 
 const logger = new Logger("taler-wallet-embedded/index.ts");
 
@@ -163,17 +171,22 @@ export class NativeHttpLib implements HttpRequestLibrary {
 }
 
 function sendNativeMessage(ev: CoreApiEnvelope): void {
-  // @ts-ignore
-  const sendMessage = globalThis.__native_sendMessage;
-  if (typeof sendMessage !== "function") {
-    const errMsg =
-      "FATAL: cannot install native wallet listener: native functions missing";
-    logger.error(errMsg);
-    throw new Error(errMsg);
-  }
   const m = JSON.stringify(ev);
-  // @ts-ignore
-  sendMessage(m);
+  qjsOs.postMessageToHost(m);
+}
+
+/**
+ * Generate a random alphanumeric ID.  Does *not* use cryptographically
+ * secure randomness.
+ */
+function makeId(length: number): string {
+  let result = "";
+  const characters =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+  for (let i = 0; i < length; i++) {
+    result += characters.charAt(Math.floor(Math.random() * characters.length));
+  }
+  return result;
 }
 
 export async function getWallet(args: DefaultNodeWalletArgs = {}): Promise<{
@@ -186,40 +199,32 @@ export async function getWallet(args: 
DefaultNodeWalletArgs = {}): Promise<{
 
   const storagePath = args.persistentStoragePath;
   if (storagePath) {
-    // try {
-    //   const dbContentStr: string = fs.readFileSync(storagePath, {
-    //     encoding: "utf-8",
-    //   });
-    //   const dbContent = JSON.parse(dbContentStr);
-    //   myBackend.importDump(dbContent);
-    // } catch (e: any) {
-    //   const code: string = e.code;
-    //   if (code === "ENOENT") {
-    //     logger.trace("wallet file doesn't exist yet");
-    //   } else {
-    //     logger.error("could not open wallet database file");
-    //     throw e;
-    //   }
-    // }
+    const dbContentStr = qjsStd.loadFile(storagePath);
+    if (dbContentStr != null) {
+      const dbContent = JSON.parse(dbContentStr);
+      myBackend.importDump(dbContent);
+    }
 
     myBackend.afterCommitCallback = async () => {
-      logger.error("DB commit not implemented");
-      // logger.trace("committing database");
-      // // Allow caller to stop persisting the wallet.
-      // if (args.persistentStoragePath === undefined) {
-      //   return;
-      // }
-      // const tmpPath = `${args.persistentStoragePath}-${makeId(5)}.tmp`;
-      // const dbContent = myBackend.exportDump();
-      // fs.writeFileSync(tmpPath, JSON.stringify(dbContent, undefined, 2), {
-      //   encoding: "utf-8",
-      // });
-      // // Atomically move the temporary file onto the DB path.
-      // fs.renameSync(tmpPath, args.persistentStoragePath);
-      // logger.trace("committing database done");
+      logger.trace("committing database");
+      // Allow caller to stop persisting the wallet.
+      if (args.persistentStoragePath === undefined) {
+        return;
+      }
+      const tmpPath = `${args.persistentStoragePath}-${makeId(5)}.tmp`;
+      const dbContent = myBackend.exportDump();
+      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");
     };
   }
 
+  console.log("done processing storage path");
+
   BridgeIDBFactory.enableTracing = false;
 
   const myBridgeIdbFactory = new BridgeIDBFactory(myBackend);
@@ -292,7 +297,7 @@ class NativeWalletMessageHandler {
       const resp = await w.handleCoreApiRequest(
         "initWallet",
         "native-init",
-        {},
+        {...this.walletArgs},
       );
       initResponse = resp.type == "response" ? resp.result : resp.error;
       w.runTaskLoop().catch((e) => {
@@ -306,6 +311,7 @@ class NativeWalletMessageHandler {
     switch (operation) {
       case "init": {
         this.walletArgs = {
+          ...args,
           notifyHandler: async (notification: WalletNotification) => {
             sendNativeMessage({ type: "notification", payload: notification });
           },
@@ -378,7 +384,7 @@ export function installNativeWalletListener(): void {
     logger.info(`native listener: got request for ${operation} (${id})`);
 
     try {
-      const respMsg = await handler.handleMessage(operation, id, msg.args);
+      const respMsg = await handler.handleMessage(operation, id, msg.payload 
?? {});
       logger.info(
         `native listener: sending success response for ${operation} (${id})`,
       );
@@ -395,8 +401,7 @@ export function installNativeWalletListener(): void {
     }
   };
 
-  // @ts-ignore
-  globalThis.__native_onMessage = onMessage;
+  qjsOs.setMessageFromHostHandler((m) => onMessage(m))
 
   logger.info("native wallet listener installed");
 }
@@ -423,10 +428,15 @@ export async function testWithGv() {
 }
 
 export async function testWithLocal() {
-  const w = await getWallet();
+  console.log("running local test");
+  const w = await getWallet({
+    persistentStoragePath: "walletdb.json",
+  });
+  console.log("created wallet");
   await w.wallet.client.call(WalletApiOperation.InitWallet, {
     skipDefaults: true,
   });
+  console.log("initialized wallet");
   await w.wallet.client.call(WalletApiOperation.RunIntegrationTest, {
     amountToSpend: "TESTKUDOS:1",
     amountToWithdraw: "TESTKUDOS:3",
@@ -435,9 +445,11 @@ export async function testWithLocal() {
     exchangeBaseUrl: "http://localhost:8081/";,
     merchantBaseUrl: "http://localhost:8083/";,
   });
+  console.log("started integration test");
   await w.wallet.runTaskLoop({
     stopWhenDone: true,
   });
+  console.log("done with task loop");
   w.wallet.stop();
 }
 

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