android support skeleton

1 files changed, 63 insertions, 0 deletions

diff --git a/src/android/index.ts b/src/android/index.ts
new file mode 100644
index 000000000..3e7eeb645
--- /dev/null
+++ b/src/android/index.ts
@@ -0,0 +1,63 @@
+/*
+ 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/>
+ */
+
+/**
+ * Imports.
+ */
+import { Wallet } from "../wallet";
+import { getDefaultNodeWallet } from "../headless/helpers";
+
+
+class AndroidWalletHelper {
+  wallet: Wallet | undefined;
+  constructor (private sendMessage: (m: any) => void) {
+  }
+
+  async init() {
+    this.wallet = await getDefaultNodeWallet();
+  }
+}
+
+export function installAndroidWalletListener() {
+  // @ts-ignore
+  const sendMessage: (m: any) => void = global.__akono_sendMessage;
+  if (typeof sendMessage !== "function") {
+    const errMsg = "FATAL: cannot install android wallet listener: akono functions missing";
+    console.error(errMsg);
+    throw new Error(errMsg);
+  }
+  const walletHelper = new AndroidWalletHelper(sendMessage);
+  const onMessage = (msg: any) => {
+    const operation = msg.operation;
+    if (typeof operation !== "string") {
+      console.error("message to android wallet helper must contain operation of type string");
+      return;
+    }
+    switch (operation) {
+      case "init":
+        break;
+      case "getBalances":
+        break;
+      case "withdraw-testkudos":
+        break;
+      default:
+        console.error(`operation "${operation}" not understood`);
+        return;
+    }
+  };
+  // @ts-ignore
+  globalThis.__akono_onMessage = onMessage;
+}
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