1 files changed, 65 insertions, 0 deletions
diff --git a/packages/taler-wallet-core/src/operations/state.ts b/packages/taler-wallet-core/src/operations/state.ts
new file mode 100644
index 000000000..cfec85d0f
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+++ b/packages/taler-wallet-core/src/operations/state.ts
@@ -0,0 +1,65 @@
+/*
+ This file is part of GNU Taler
+ (C) 2019 GNUnet e.V.
+
+ 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/>
+ */
+
+import { HttpRequestLibrary } from "../util/http";
+import { NextUrlResult, BalancesResponse } from "../types/walletTypes";
+import { CryptoApi, CryptoWorkerFactory } from "../crypto/workers/cryptoApi";
+import { AsyncOpMemoMap, AsyncOpMemoSingle } from "../util/asyncMemo";
+import { Logger } from "../util/logging";
+import { PendingOperationsResponse } from "../types/pending";
+import { WalletNotification } from "../types/notifications";
+import { Database } from "../util/query";
+
+type NotificationListener = (n: WalletNotification) => void;
+
+const logger = new Logger("state.ts");
+
+export class InternalWalletState {
+  cachedNextUrl: { [fulfillmentUrl: string]: NextUrlResult } = {};
+  memoProcessReserve: AsyncOpMemoMap<void> = new AsyncOpMemoMap();
+  memoMakePlanchet: AsyncOpMemoMap<void> = new AsyncOpMemoMap();
+  memoGetPending: AsyncOpMemoSingle<
+    PendingOperationsResponse
+  > = new AsyncOpMemoSingle();
+  memoGetBalance: AsyncOpMemoSingle<BalancesResponse> = new AsyncOpMemoSingle();
+  memoProcessRefresh: AsyncOpMemoMap<void> = new AsyncOpMemoMap();
+  memoProcessRecoup: AsyncOpMemoMap<void> = new AsyncOpMemoMap();
+  cryptoApi: CryptoApi;
+
+  listeners: NotificationListener[] = [];
+
+  constructor(
+    public db: Database,
+    public http: HttpRequestLibrary,
+    cryptoWorkerFactory: CryptoWorkerFactory,
+  ) {
+    this.cryptoApi = new CryptoApi(cryptoWorkerFactory);
+  }
+
+  public notify(n: WalletNotification): void {
+    logger.trace("Notification", n);
+    for (const l of this.listeners) {
+      const nc = JSON.parse(JSON.stringify(n));
+      setTimeout(() => {
+        l(nc);
+      }, 0);
+    }
+  }
+
+  addNotificationListener(f: (n: WalletNotification) => void): void {
+    this.listeners.push(f);
+  }
+}