separate crypto api

1 files changed, 74 insertions, 0 deletions

diff --git a/extension/lib/wallet/cryptoApi.ts b/extension/lib/wallet/cryptoApi.ts
new file mode 100644
index 000000000..c29e9a45e
--- /dev/null
+++ b/extension/lib/wallet/cryptoApi.ts
@@ -0,0 +1,74 @@
+/*
+ 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/>
+ */
+
+
+import {PreCoin} from "./types";
+import {Reserve} from "./types";
+import {Denomination} from "./types";
+export class CryptoApi {
+  private nextRpcId: number = 1;
+  private rpcRegistry = {};
+  private cryptoWorker: Worker;
+
+
+  constructor() {
+    this.cryptoWorker = new Worker("/lib/wallet/cryptoWorker.js");
+
+    this.cryptoWorker.onmessage = (msg: MessageEvent) => {
+      let id = msg.data.id;
+      if (typeof id !== "number") {
+        console.error("rpc id must be number");
+        return;
+      }
+      if (!this.rpcRegistry[id]) {
+        console.error(`RPC with id ${id} has no registry entry`);
+        return;
+      }
+      let {resolve, reject} = this.rpcRegistry[id];
+      resolve(msg.data.result);
+    }
+  }
+
+
+  private registerRpcId(resolve, reject): number {
+    let id = this.nextRpcId++;
+    this.rpcRegistry[id] = {resolve, reject};
+    return id;
+  }
+
+
+  private doRpc<T>(methodName: string, ...args): Promise<T> {
+    return new Promise<T>((resolve, reject) => {
+      let msg = {
+        operation: methodName,
+        id: this.registerRpcId(resolve, reject),
+        args: args,
+      };
+      this.cryptoWorker.postMessage(msg);
+    });
+  }
+
+
+  createPreCoin(denom: Denomination, reserve: Reserve): Promise<PreCoin> {
+    return this.doRpc("createPreCoin", denom, reserve);
+  }
+
+
+  isValidDenom(denom: Denomination,
+               masterPub: string): Promise<boolean> {
+    return this.doRpc("isValidDenom", denom, masterPub);
+  }
+}
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