From 3eda3580f60fec182569be9d261eba54f134a2ba Mon Sep 17 00:00:00 2001
From: Donkie <daniel.cf.hultgren@gmail.com>
Date: Thu, 3 Aug 2023 21:51:49 +0200
Subject: [PATCH] Client: Added simple qr code scanner

---
 client/package.json                     |   1 +
 client/src/components/header/index.tsx  |   2 +
 client/src/components/qrCodeScanner.tsx | 114 ++++++++++++++++++++++++
 3 files changed, 117 insertions(+)
 create mode 100644 client/src/components/qrCodeScanner.tsx

diff --git a/client/package.json b/client/package.json
index 6b8800e..a3e6c72 100644
--- a/client/package.json
+++ b/client/package.json
@@ -21,6 +21,7 @@
     "i18next": "^23.2.8",
     "i18next-browser-languagedetector": "^7.1.0",
     "i18next-xhr-backend": "^3.2.2",
+    "qr-scanner": "^1.4.2",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-i18next": "^13.0.1",
diff --git a/client/src/components/header/index.tsx b/client/src/components/header/index.tsx
index e57c734..eacdd25 100644
--- a/client/src/components/header/index.tsx
+++ b/client/src/components/header/index.tsx
@@ -15,6 +15,7 @@ import { ColorModeContext } from "../../contexts/color-mode";
 
 import "/node_modules/flag-icons/css/flag-icons.min.css";
 import { languages } from "../../i18n";
+import QRCodeScannerModal from "../qrCodeScanner";
 
 const { useToken } = theme;
 
@@ -84,6 +85,7 @@ export const Header: React.FC<RefineThemedLayoutV2HeaderProps> = ({
           onChange={() => setMode(mode === "light" ? "dark" : "light")}
           defaultChecked={mode === "dark"}
         />
+        <QRCodeScannerModal />
       </Space>
     </AntdLayout.Header>
   );
diff --git a/client/src/components/qrCodeScanner.tsx b/client/src/components/qrCodeScanner.tsx
new file mode 100644
index 0000000..74f0265
--- /dev/null
+++ b/client/src/components/qrCodeScanner.tsx
@@ -0,0 +1,114 @@
+import React, { useEffect, useRef, useState } from "react";
+import { Button, FloatButton, Modal, Space } from "antd";
+import QrScanner from "qr-scanner"; // Make sure to import from the correct path
+import { useNavigate } from "react-router-dom";
+import { CameraOutlined } from "@ant-design/icons";
+
+const QRCodeScannerModal: React.FC = () => {
+  const [visible, setVisible] = useState(false);
+  const videoRef = useRef<HTMLVideoElement | null>(null);
+  const scanner = useRef<QrScanner | null>(null);
+  const navigate = useNavigate();
+  const [hasCamera, setHasCamera] = useState(false);
+
+  useEffect(() => {
+    const onScan = (result: string) => {
+      // Check for the spoolman ID format
+      const match = result.match(/^web+spoolman:s-(?<id>[0-9]+)$/);
+      if (match && match.groups) {
+        navigate(`/spool/show/${match.groups.id}`);
+      }
+    };
+
+    const startCamera = async () => {
+      console.log("Starting camera");
+      if (!(await QrScanner.hasCamera())) {
+        console.log("No camera found on this device");
+        setHasCamera(false);
+        return;
+      } else {
+        console.log("Camera found on this device");
+        setHasCamera(true);
+        if (videoRef.current) {
+          scanner.current = new QrScanner(
+            videoRef.current,
+            (result) => {
+              console.log("QR Code detected:", result);
+              onScan(result.data);
+            },
+            {
+              preferredCamera: "environment",
+            }
+          );
+          console.log("Starting scanner");
+          try {
+            await scanner.current.start();
+          } catch (e) {
+            setHasCamera(false);
+            console.log(e);
+          }
+        } else {
+          console.log("No video ref");
+        }
+      }
+    };
+    if (visible) {
+      startCamera();
+    }
+
+    return () => {
+      console.log("Destroying scanner");
+      scanner.current?.destroy();
+      scanner.current = null;
+    };
+  }, [visible, navigate]);
+
+  // Draw a centered div if no camera was found
+
+  return (
+    <>
+      <FloatButton
+        type="primary"
+        onClick={() => setVisible(true)}
+        icon={<CameraOutlined />}
+        shape="circle"
+      />
+      <Modal
+        open={visible}
+        onCancel={() => setVisible(false)}
+        footer={null}
+        title="QR Code Scanner"
+      >
+        <Space direction="vertical" style={{ width: "100%" }}>
+          <p>Scan a Spoolman QR code to view details about the spool.</p>
+          <video
+            style={{
+              width: "100%",
+              display: hasCamera ? "block" : "none",
+            }}
+            ref={videoRef}
+          />
+          {!hasCamera && (
+            <div
+              style={{
+                width: "100%",
+                position: "relative",
+                backgroundColor: "black",
+                display: hasCamera ? "none" : "block",
+                padding: "4rem 0rem",
+                textAlign: "center",
+              }}
+            >
+              No camera detected.
+              <br />
+              <br />
+              Ensure you have given the browser permission to use the camera.
+            </div>
+          )}
+        </Space>
+      </Modal>
+    </>
+  );
+};
+
+export default QRCodeScannerModal;