taler://pay support

1 files changed, 77 insertions, 0 deletions

diff --git a/src/taleruri.ts b/src/taleruri.ts
new file mode 100644
index 000000000..fa3b09c31
--- /dev/null
+++ b/src/taleruri.ts
@@ -0,0 +1,77 @@
+/*
+ This file is part of 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 URI = require("urijs");
+
+export interface PayUriResult {
+  downloadUrl: string;
+  sessionId?: string;
+}
+
+export function parsePayUri(s: string): PayUriResult | undefined {
+  const parsedUri = new URI(s);
+  if (parsedUri.scheme() === "http" || parsedUri.scheme() === "https") {
+    return {
+      downloadUrl: s,
+      sessionId: undefined,
+    };
+  }
+  if (parsedUri.scheme() != "taler") {
+    return undefined;
+  }
+  if (parsedUri.authority() != "pay") {
+    return undefined;
+  }
+
+  let [
+    _,
+    host,
+    maybePath,
+    maybeInstance,
+    orderId,
+    maybeSessionid,
+  ] = parsedUri.path().split("/");
+
+  if (!host) {
+    return undefined;
+  }
+
+  if (!maybePath) {
+    return undefined;
+  }
+
+  if (!orderId) {
+    return undefined;
+  }
+
+  if (maybePath === "-") {
+    maybePath = "public/proposal";
+  } else {
+    maybePath = decodeURIComponent(maybePath);
+  }
+  if (maybeInstance === "-") {
+    maybeInstance = "default";
+  }
+
+  const downloadUrl = new URI(
+    "https://" + host + "/" + decodeURIComponent(maybePath),
+  ).addQuery({ instance: maybeInstance, order_id: orderId }).href();
+
+  return {
+    downloadUrl,
+    sessionId: maybeSessionid,
+  }
+}