fixing withdrawal process

2 files changed, 55 insertions, 4 deletions

diff --git a/packages/taler-wallet-webextension/src/hooks/useAsyncAsHook.ts b/packages/taler-wallet-webextension/src/hooks/useAsyncAsHook.ts
new file mode 100644
index 000000000..2131d45cb
--- /dev/null
+++ b/packages/taler-wallet-webextension/src/hooks/useAsyncAsHook.ts
@@ -0,0 +1,48 @@
+/*
+ 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/>
+ */
+import { ExchangesListRespose } from "@gnu-taler/taler-util";
+import { useEffect, useState } from "preact/hooks";
+import * as wxApi from "../wxApi";
+
+interface HookOk<T> {
+  hasError: false;
+  response: T;
+}
+
+interface HookError {
+  hasError: true;
+  message: string;
+}
+
+export type HookResponse<T> = HookOk<T> | HookError | undefined;
+
+export function useAsyncAsHook<T> (fn: (() => Promise<T>)): HookResponse<T> {
+  const [result, setHookResponse] = useState<HookResponse<T>>(undefined);
+  useEffect(() => {
+    async function doAsync() {
+      try {
+        const response = await fn();
+        setHookResponse({ hasError: false, response });
+      } catch (e) {
+        if (e instanceof Error) {
+          setHookResponse({ hasError: true, message: e.message });
+        }
+      }
+    }
+    doAsync()
+  }, []);
+  return result;
+}
diff --git a/packages/taler-wallet-webextension/src/hooks/useBalances.tsx b/packages/taler-wallet-webextension/src/hooks/useBalances.ts
index 503b7a492..37424fb05 100644
--- a/packages/taler-wallet-webextension/src/hooks/useBalances.tsx
+++ b/packages/taler-wallet-webextension/src/hooks/useBalances.ts
@@ -20,12 +20,13 @@ import * as wxApi from "../wxApi";
 
 
 interface BalancesHookOk {
-  error: false;
+  hasError: false;
   response: BalancesResponse;
 }
 
 interface BalancesHookError {
-  error: true;
+  hasError: true;
+  message: string;
 }
 
 export type BalancesHook = BalancesHookOk | BalancesHookError | undefined;
@@ -37,10 +38,12 @@ export function useBalances(): BalancesHook {
       try {
         const response = await wxApi.getBalance();
         console.log("got balance", balance);
-        setBalance({ error: false, response });
+        setBalance({ hasError: false, response });
       } catch (e) {
         console.error("could not retrieve balances", e);
-        setBalance({ error: true });
+        if (e instanceof Error) {
+          setBalance({ hasError: true, message: e.message });
+        }
       }
     }
     checkBalance()