qr reader

10 files changed, 311 insertions, 17 deletions

diff --git a/packages/taler-wallet-webextension/package.json b/packages/taler-wallet-webextension/package.json
index b62bae081..8d823e60d 100644
--- a/packages/taler-wallet-webextension/package.json
+++ b/packages/taler-wallet-webextension/package.json
@@ -27,6 +27,7 @@
     "history": "4.10.1",
     "preact": "^10.6.5",
     "preact-router": "3.2.1",
+    "qr-scanner": "^1.4.1",
     "qrcode-generator": "^1.4.4",
     "tslib": "^2.3.1",
     "ws": "7.4.5"
diff --git a/packages/taler-wallet-webextension/src/NavigationBar.tsx b/packages/taler-wallet-webextension/src/NavigationBar.tsx
index f782575de..edcf44d35 100644
--- a/packages/taler-wallet-webextension/src/NavigationBar.tsx
+++ b/packages/taler-wallet-webextension/src/NavigationBar.tsx
@@ -33,6 +33,7 @@ import {
 } from "./components/styled/index.js";
 import { useTranslationContext } from "./context/translation.js";
 import settingsIcon from "./svg/settings_black_24dp.svg";
+import qrIcon from "./svg/qr_code_24px.svg";
 
 /**
  * List of pages used by the wallet
@@ -101,6 +102,7 @@ export const Pages = {
   ),
   backupProviderAdd: "/backup/provider/add",
 
+  qr: "/qr",
   settings: "/settings",
   settingsExchangeAdd: pageDefinition<{ currency?: string }>(
     "/settings/exchange/add/:currency?",
@@ -127,13 +129,22 @@ export function PopupNavBar({ path = "" }: { path?: string }): VNode {
       <a href={Pages.backup} class={path.startsWith("/backup") ? "active" : ""}>
         <i18n.Translate>Backup</i18n.Translate>
       </a>
-      <a href={Pages.settings}>
-        <SvgIcon
-          title={i18n.str`Settings`}
-          dangerouslySetInnerHTML={{ __html: settingsIcon }}
-          color="white"
-        />
-      </a>
+      <div style={{ display: "flex", paddingTop: 4, justifyContent: "right" }}>
+        <a href={Pages.qr}>
+          <SvgIcon
+            title={i18n.str`QR Reader`}
+            dangerouslySetInnerHTML={{ __html: qrIcon }}
+            color="white"
+          />
+        </a>
+        <a href={Pages.settings}>
+          <SvgIcon
+            title={i18n.str`Settings`}
+            dangerouslySetInnerHTML={{ __html: settingsIcon }}
+            color="white"
+          />
+        </a>
+      </div>
     </NavigationHeader>
   );
 }
@@ -162,12 +173,24 @@ export function WalletNavBar({ path = "" }: { path?: string }): VNode {
           </a>
         </JustInDevMode>
 
-        <a
-          href={Pages.settings}
-          class={path.startsWith("/settings") ? "active" : ""}
+        <div
+          style={{ display: "flex", paddingTop: 4, justifyContent: "right" }}
         >
-          <i18n.Translate>Settings</i18n.Translate>
-        </a>
+          <a href={Pages.qr}>
+            <SvgIcon
+              title={i18n.str`QR Reader`}
+              dangerouslySetInnerHTML={{ __html: qrIcon }}
+              color="white"
+            />
+          </a>
+          <a href={Pages.settings}>
+            <SvgIcon
+              title={i18n.str`Settings`}
+              dangerouslySetInnerHTML={{ __html: settingsIcon }}
+              color="white"
+            />
+          </a>
+        </div>
       </NavigationHeader>
     </NavigationHeaderHolder>
   );
diff --git a/packages/taler-wallet-webextension/src/components/styled/index.tsx b/packages/taler-wallet-webextension/src/components/styled/index.tsx
index 2430be7c1..70f996743 100644
--- a/packages/taler-wallet-webextension/src/components/styled/index.tsx
+++ b/packages/taler-wallet-webextension/src/components/styled/index.tsx
@@ -820,7 +820,8 @@ export const NavigationHeader = styled.div`
     width: 500px;
   }
 
-  & > a {
+  & > a,
+  & > div {
     color: #f8faf7;
     display: inline-block;
     width: 100%;
@@ -837,18 +838,20 @@ export const NavigationHeader = styled.div`
   }
 `;
 
-export const SvgIcon = styled.div<{
+interface SvgIconProps {
   title: string;
   color: string;
   onClick?: any;
-}>`
+}
+export const SvgIcon = styled.div<SvgIconProps>`
   & > svg {
     fill: ${({ color }) => color};
   }
   width: 24px;
   height: 24px;
-  margin-left: auto;
+  margin-left: 8px;
   margin-right: 8px;
+  display: inline;
   padding: 4px;
   cursor: ${({ onClick }) => (onClick ? "pointer" : "inherit")};
 `;
@@ -857,7 +860,7 @@ export const Icon = styled.div`
   background-color: gray;
   width: 24px;
   height: 24px;
-  margin-left: auto;
+  margin-left: 8px;
   margin-right: 8px;
   padding: 4px;
 `;
diff --git a/packages/taler-wallet-webextension/src/mui/InputFile.tsx b/packages/taler-wallet-webextension/src/mui/InputFile.tsx
new file mode 100644
index 000000000..2b67dc99b
--- /dev/null
+++ b/packages/taler-wallet-webextension/src/mui/InputFile.tsx
@@ -0,0 +1,78 @@
+/*
+ This file is part of GNU Taler
+ (C) 2022 Taler Systems S.A.
+
+ 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/>
+ */
+
+/**
+ *
+ * @author Sebastian Javier Marchano (sebasjm)
+ */
+import { ComponentChildren, h, VNode } from "preact";
+import { useRef, useState } from "preact/hooks";
+import { Button } from "./Button.js";
+// import { MAX_IMAGE_SIZE as MAX_IMAGE_UPLOAD_SIZE } from "../../utils/constants";
+// import { InputProps, useField } from "./useField";
+
+const MAX_IMAGE_UPLOAD_SIZE = 1024 * 1024;
+
+interface Props {
+  children: ComponentChildren;
+  onChange: (v: string) => void;
+}
+
+export function InputFile<T>({ onChange, children }: Props): VNode {
+  const image = useRef<HTMLInputElement>(null);
+
+  const [sizeError, setSizeError] = useState(false);
+
+  return (
+    <div>
+      <p>
+        <Button
+          variant="contained"
+          onClick={async () => image.current?.click()}
+        >
+          {children}
+        </Button>
+        <input
+          ref={image}
+          style={{ display: "none" }}
+          type="file"
+          name={String(name)}
+          onChange={(e) => {
+            const f: FileList | null = e.currentTarget.files;
+            if (!f || f.length != 1) {
+              return;
+            }
+            if (f[0].size > MAX_IMAGE_UPLOAD_SIZE) {
+              setSizeError(true);
+              return;
+            }
+            setSizeError(false);
+            return f[0].arrayBuffer().then((b) => {
+              const b64 = btoa(
+                new Uint8Array(b).reduce(
+                  (data, byte) => data + String.fromCharCode(byte),
+                  "",
+                ),
+              );
+              return onChange(`data:${f[0].type};base64,${b64}` as any);
+            });
+          }}
+        />
+      </p>
+      {sizeError && <p>Image should be smaller than 1 MB</p>}
+    </div>
+  );
+}
diff --git a/packages/taler-wallet-webextension/src/popup/Application.tsx b/packages/taler-wallet-webextension/src/popup/Application.tsx
index 521679237..be3c8a2f8 100644
--- a/packages/taler-wallet-webextension/src/popup/Application.tsx
+++ b/packages/taler-wallet-webextension/src/popup/Application.tsx
@@ -133,6 +133,7 @@ export function Application(): VNode {
                   path={Pages.backupProviderAdd}
                   component={RedirectToWalletPage}
                 />
+                <Route path={Pages.qr} component={RedirectToWalletPage} />
                 <Route path={Pages.settings} component={RedirectToWalletPage} />
                 <Route
                   path={Pages.settingsExchangeAdd.pattern}
diff --git a/packages/taler-wallet-webextension/src/svg/qr_code_24px.svg b/packages/taler-wallet-webextension/src/svg/qr_code_24px.svg
new file mode 100644
index 000000000..c0c158359
--- /dev/null
+++ b/packages/taler-wallet-webextension/src/svg/qr_code_24px.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" enable-background="new 0 0 24 24" height="24" viewBox="0 0 24 24" width="24"><g><rect fill="none" height="24" width="24"/></g><g><g><path d="M3,11h8V3H3V11z M5,5h4v4H5V5z"/><path d="M3,21h8v-8H3V21z M5,15h4v4H5V15z"/><path d="M13,3v8h8V3H13z M19,9h-4V5h4V9z"/><rect height="2" width="2" x="19" y="19"/><rect height="2" width="2" x="13" y="13"/><rect height="2" width="2" x="15" y="15"/><rect height="2" width="2" x="13" y="17"/><rect height="2" width="2" x="15" y="19"/><rect height="2" width="2" x="17" y="17"/><rect height="2" width="2" x="17" y="13"/><rect height="2" width="2" x="19" y="15"/></g></g></svg>
\ No newline at end of file
diff --git a/packages/taler-wallet-webextension/src/wallet/Application.tsx b/packages/taler-wallet-webextension/src/wallet/Application.tsx
index f6cef7e90..f559e54db 100644
--- a/packages/taler-wallet-webextension/src/wallet/Application.tsx
+++ b/packages/taler-wallet-webextension/src/wallet/Application.tsx
@@ -51,6 +51,8 @@ import { ProviderDetailPage } from "./ProviderDetailPage.js";
 import { SettingsPage } from "./Settings.js";
 import { TransactionPage } from "./Transaction.js";
 import { WelcomePage } from "./Welcome.js";
+import { QrReaderPage } from "./QrReader.js";
+import { platform } from "../platform/api.js";
 
 export function Application(): VNode {
   const [globalNotification, setGlobalNotification] = useState<
@@ -162,6 +164,14 @@ export function Application(): VNode {
               {/**
                * PENDING
                */}
+              <Route
+                path={Pages.qr}
+                component={QrReaderPage}
+                onDetected={(talerActionUrl: string) => {
+                  platform.openWalletURIFromPopup(talerActionUrl);
+                }}
+              />
+
               <Route path={Pages.settings} component={SettingsPage} />
 
               {/**
diff --git a/packages/taler-wallet-webextension/src/wallet/QrReader.stories.tsx b/packages/taler-wallet-webextension/src/wallet/QrReader.stories.tsx
new file mode 100644
index 000000000..ba5a78570
--- /dev/null
+++ b/packages/taler-wallet-webextension/src/wallet/QrReader.stories.tsx
@@ -0,0 +1,29 @@
+/*
+ This file is part of GNU Taler
+ (C) 2022 Taler Systems S.A.
+
+ 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/>
+ */
+
+/**
+ *
+ * @author Sebastian Javier Marchano (sebasjm)
+ */
+
+import { createExample } from "../test-utils.js";
+import { QrReaderPage } from "./QrReader.js";
+
+export default {
+  title: "wallet/qr",
+};
+
+export const Reading = createExample(QrReaderPage, {});
diff --git a/packages/taler-wallet-webextension/src/wallet/QrReader.tsx b/packages/taler-wallet-webextension/src/wallet/QrReader.tsx
new file mode 100644
index 000000000..9c9ab7ce4
--- /dev/null
+++ b/packages/taler-wallet-webextension/src/wallet/QrReader.tsx
@@ -0,0 +1,146 @@
+/*
+ This file is part of GNU Taler
+ (C) 2022 Taler Systems S.A.
+
+ 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 { classifyTalerUri, TalerUriType } from "@gnu-taler/taler-util";
+import { styled } from "@linaria/react";
+import { Fragment, h, VNode } from "preact";
+import { Ref, useEffect, useRef, useState } from "preact/hooks";
+import QrScanner from "qr-scanner";
+import { Alert } from "../mui/Alert.js";
+import { Button } from "../mui/Button.js";
+import { TextField } from "../mui/TextField.js";
+
+const QrVideo = styled.video`
+  width: 80%;
+  margin-left: auto;
+  margin-right: auto;
+  padding: 8px;
+  background-color: black;
+`;
+
+const Container = styled.div`
+  display: flex;
+  flex-direction: column;
+  & > * {
+    margin-bottom: 20px;
+  }
+`;
+
+interface Props {
+  onDetected: (url: string) => void;
+}
+
+export function QrReaderPage({ onDetected }: Props): VNode {
+  const videoRef = useRef<HTMLVideoElement>(null);
+  // const imageRef = useRef<HTMLImageElement>(null);
+  const qrScanner = useRef<QrScanner | null>(null);
+  const [value, onChange] = useState("");
+  const [active, setActive] = useState(false);
+
+  function start(): void {
+    qrScanner.current!.start();
+    onChange("");
+    setActive(true);
+  }
+  function stop(): void {
+    qrScanner.current!.stop();
+    setActive(false);
+  }
+
+  function check(v: string) {
+    return (
+      v.startsWith("taler://") && classifyTalerUri(v) !== TalerUriType.Unknown
+    );
+  }
+
+  useEffect(() => {
+    if (!videoRef.current) {
+      console.log("vide was not ready");
+      return;
+    }
+    const elem = videoRef.current;
+    setTimeout(() => {
+      qrScanner.current = new QrScanner(
+        elem,
+        ({ data, cornerPoints }) => {
+          if (check(data)) {
+            onDetected(data);
+            return;
+          }
+          onChange(data);
+          stop();
+        },
+        {
+          maxScansPerSecond: 5, //default 25
+          highlightScanRegion: true,
+        },
+      );
+      start();
+    }, 1);
+    return () => {
+      qrScanner.current?.destroy();
+    };
+  }, []);
+
+  const isValid = check(value);
+
+  return (
+    <Container>
+      {/* <InputFile onChange={(f) => scanImage(imageRef, f)}>
+        Read QR from file
+      </InputFile>
+      <div ref={imageRef} /> */}
+      <QrVideo ref={videoRef} />
+      <TextField
+        label="Taler URI"
+        variant="standard"
+        fullWidth
+        value={value}
+        onChange={onChange}
+      />
+      {isValid && (
+        <Button variant="contained" onClick={async () => onDetected(value)}>
+          Open
+        </Button>
+      )}
+      {!active && !isValid && (
+        <Fragment>
+          <Alert severity="error">
+            URI is not valid. Taler URI should start with `taler://`
+          </Alert>
+          <Button variant="contained" onClick={async () => start()}>
+            Try another
+          </Button>
+        </Fragment>
+      )}
+    </Container>
+  );
+}
+
+async function scanImage(
+  imageRef: Ref<HTMLImageElement>,
+  image: string,
+): Promise<void> {
+  const imageEl = new Image();
+  imageEl.src = image;
+  imageEl.width = 200;
+  imageRef.current!.appendChild(imageEl);
+  QrScanner.scanImage(image, {
+    alsoTryWithoutScanRegion: true,
+  })
+    .then((result) => console.log(result))
+    .catch((error) => console.log(error || "No QR code found."));
+}
diff --git a/packages/taler-wallet-webextension/src/wallet/index.stories.tsx b/packages/taler-wallet-webextension/src/wallet/index.stories.tsx
index 4754721de..fc09ea541 100644
--- a/packages/taler-wallet-webextension/src/wallet/index.stories.tsx
+++ b/packages/taler-wallet-webextension/src/wallet/index.stories.tsx
@@ -34,6 +34,7 @@ import * as a13 from "./Transaction.stories.js";
 import * as a14 from "./Welcome.stories.js";
 import * as a15 from "./AddNewActionView.stories.js";
 import * as a16 from "./DeveloperPage.stories.js";
+import * as a17 from "./QrReader.stories.js";
 
 export default [
   a1,
@@ -51,4 +52,5 @@ export default [
   a14,
   a15,
   a16,
+  a17,
 ];