add QR scanner for adding a contact

src/views/ContactQRScanShowView.vue

@@ -3,7 +3,7 @@
   <!-- CONTENT -->
   <section id="Content" class="p-6 pb-24">
     <!-- Heading -->
-    <h1 id="ViewHeading" class="text-4xl text-center font-light pt-4 mb-8">
+    <h1 id="ViewHeading" class="text-4xl text-center font-light pt-4">
       Your Contact Info
     </h1>
 
@@ -17,12 +17,17 @@
       :dotsOptions="{ type: 'square' }"
       class="flex justify-center"
     />
+
+    <h1 class="text-4xl text-center font-light pt-4">Scan Contact Info</h1>
+    <qrcode-stream @detect="onScanDetect" @error="onScanError" />
   </section>
 </template>
 
 <script lang="ts">
 import QRCodeVue3 from "qr-code-generator-vue3";
 import { Component, Vue } from "vue-facing-decorator";
+import { QrcodeStream } from "vue-qrcode-reader";
+
 import { accountsDB, db } from "@/db/index";
 import { MASTER_SETTINGS_KEY } from "@/db/tables/settings";
 import * as R from "ramda";
@@ -30,6 +35,10 @@ import { SimpleSigner } from "@/libs/crypto";
 import * as didJwt from "did-jwt";
 import QuickNav from "@/components/QuickNav.vue";
 import { Account } from "@/db/tables/accounts";
+import {
+  CONTACT_URL_PREFIX,
+  ENDORSER_JWT_URL_LOCATION,
+} from "@/libs/endorserServer";
 
 // eslint-disable-next-line @typescript-eslint/no-var-requires
 const Buffer = require("buffer/").Buffer;
@@ -43,6 +52,7 @@ interface Notification {
 
 @Component({
   components: {
+    QrcodeStream,
     QRCodeVue3,
     QuickNav,
   },
@@ -112,9 +122,47 @@ export default class ContactQRScanShow extends Vue {
         issuer: identity.did,
         signer: signer,
       });
-      const viewPrefix = "https://endorser.ch/contact?jwt=";
+      const viewPrefix = CONTACT_URL_PREFIX + ENDORSER_JWT_URL_LOCATION;
       this.qrValue = viewPrefix + vcJwt;
     }
   }
+
+  /**
+   *
+   * @param content is the result of a QR scan, an array with one item with a rawValue property
+   */
+  // Unfortunately, there are not typescript definitions for the qrcode-stream component yet.
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  onScanDetect(content: any) {
+    if (content[0]?.rawValue) {
+      console.log("onDetect", content[0].rawValue);
+      localStorage.setItem("contactEndorserUrl", content[0].rawValue);
+      this.$router.push({ name: "contacts" });
+    } else {
+      this.$notify(
+        {
+          group: "alert",
+          type: "warning",
+          title: "Invalid Contact QR Code",
+          text: "No QR code detected with contact information.",
+        },
+        -1,
+      );
+    }
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  onScanError(error: any) {
+    console.log("Scan was invalid:", error);
+    this.$notify(
+      {
+        group: "alert",
+        type: "warning",
+        title: "Invalid Scan",
+        text: "The scan was invalid.",
+      },
+      -1,
+    );
+  }
 }
 </script>