feat: Create QRCode for Verifiable credential

closes #46

Signed-off-by: talwinder.kaur <[email protected]>

cmd/issuer-agent/wasm/go.sum

@@ -114,6 +114,7 @@ github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 h1:J9b7z+QKAm
 github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35/go.mod h1:prYjPmNq4d1NPVmpShWobRqXY3q7Vp+80DqgxxUrUIA=
 github.com/rs/cors v1.7.0 h1:+88SsELBHx5r+hZ8TCkggzSstaWNbDvThkVK8H6f9ik=
 github.com/rs/cors v1.7.0/go.mod h1:gFx+x8UowdsKA9AchylcLynDq+nNFfI8FkUZdN/jGCU=
+github.com/skip2/go-qrcode v0.0.0-20191027152451-9434209cb086/go.mod h1:PLPIyL7ikehBD1OAjmKKiOEhbvWyHGaNDjquXMcYABo=
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/square/go-jose/v3 v3.0.0-20191119004800-96c717272387 h1:PjfQbTWDEoNh4v+4NNirclXoCIxjjLXsqSAP1iYxuOM=

cmd/rp-agent/wasm/go.sum

@@ -114,6 +114,7 @@ github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 h1:J9b7z+QKAm
 github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35/go.mod h1:prYjPmNq4d1NPVmpShWobRqXY3q7Vp+80DqgxxUrUIA=
 github.com/rs/cors v1.7.0 h1:+88SsELBHx5r+hZ8TCkggzSstaWNbDvThkVK8H6f9ik=
 github.com/rs/cors v1.7.0/go.mod h1:gFx+x8UowdsKA9AchylcLynDq+nNFfI8FkUZdN/jGCU=
+github.com/skip2/go-qrcode v0.0.0-20191027152451-9434209cb086/go.mod h1:PLPIyL7ikehBD1OAjmKKiOEhbvWyHGaNDjquXMcYABo=
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/square/go-jose/v3 v3.0.0-20191119004800-96c717272387 h1:PjfQbTWDEoNh4v+4NNirclXoCIxjjLXsqSAP1iYxuOM=

cmd/user-agent/wasm/go.sum

@@ -117,6 +117,7 @@ github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 h1:J9b7z+QKAm
 github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35/go.mod h1:prYjPmNq4d1NPVmpShWobRqXY3q7Vp+80DqgxxUrUIA=
 github.com/rs/cors v1.7.0 h1:+88SsELBHx5r+hZ8TCkggzSstaWNbDvThkVK8H6f9ik=
 github.com/rs/cors v1.7.0/go.mod h1:gFx+x8UowdsKA9AchylcLynDq+nNFfI8FkUZdN/jGCU=
+github.com/skip2/go-qrcode v0.0.0-20191027152451-9434209cb086/go.mod h1:PLPIyL7ikehBD1OAjmKKiOEhbvWyHGaNDjquXMcYABo=
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/square/go-jose/v3 v3.0.0-20191119004800-96c717272387 h1:PjfQbTWDEoNh4v+4NNirclXoCIxjjLXsqSAP1iYxuOM=

cmd/user-agent/web/src/App.vue

@@ -10,6 +10,7 @@ SPDX-License-Identifier: Apache-2.0
       <li><router-link to="/" exact>Homepage</router-link></li>
       <li><router-link to="/AcceptInvitation">Accept Invitation</router-link></li>
       <li><router-link to="/RegisterWallet">Register Wallet</router-link></li>
+      <li><router-link to="/MyVC">My Credentials</router-link></li>
     </ul>
     <router-view></router-view>
   </div>

cmd/user-agent/web/src/router/index.js

@@ -31,6 +31,11 @@ export default new Router({
             path: "/GetVC",
             component: () => import("@/views/GetVC")
         },
+        {
+            name: "myVC",
+            path: "/MyVC",
+            component: () => import("@/views/myVC")
+        },
         {
             name: "registerWallet",
             path: "/RegisterWallet",

cmd/user-agent/web/src/views/myVC.vue

@@ -0,0 +1,51 @@
+/*
+Copyright SecureKey Technologies Inc. All Rights Reserved.
+
+SPDX-License-Identifier: Apache-2.0
+*/
+
+<template>
+    <div>
+        <div> Create QR Code </div>
+        <br>
+          <div>
+            <select id="selectVC">
+                <option value="0" >Select VC</option>
+            </select>
+            <br>
+            <br>
+            <button id='getVCBtn'>Get QR Code</button>
+            <br>
+            <br>
+            <img src="" id="qr-result"/>
+         </div>
+        </div>
+</template>
+<script>
+    async function generateQRCode() {
+        window.onload = function () {
+            document.getElementById('getVCBtn').addEventListener('click', () => {
+            var e = document.getElementById("selectVC");
+            var vcValue = e.options[e.selectedIndex].value;
+            if (vcValue == 0) {
+                alert("please select vc")
+                return
+            }
+             window.createQRCode(vcValue);
+            });
+        }
+    }
+
+    export default{
+        beforeCreate:function(){
+            // Add an event listener
+            document.addEventListener("afterLoadingWasm", function() {
+                var select = document.getElementById("selectVC");
+                window.populateVC(select)
+            });
+            window.$webCredentialHandler=this.$webCredentialHandler
+            generateQRCode()
+        },
+    }
+
+</script>

go.mod

@@ -8,6 +8,6 @@ go 1.13
 
 require (
 	github.com/hyperledger/aries-framework-go v0.1.2
+	github.com/skip2/go-qrcode v0.0.0-20191027152451-9434209cb086
 	github.com/stretchr/testify v1.4.0
-
 )

go.sum

@@ -66,7 +66,9 @@ github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/hyperledger/aries-framework-go v0.1.2-0.20200220221823-fb5c1d69a845 h1:bWjirDFdao/xtNxXWrZYoSaM+v2hMfPP9r/dtPcFHII=
 github.com/hyperledger/aries-framework-go v0.1.2-0.20200220221823-fb5c1d69a845/go.mod h1:/Fy3iGC4G2sD4HgKDC17CGcLLFFBTTgR5lEp2INNXbw=
+github.com/hyperledger/aries-framework-go v0.1.2-0.20200226031908-1aef12b7b826 h1:SKdGTcCWO5FyNh2eUdL0b00sN11UOCBBqd8mutCesYY=
 github.com/hyperledger/aries-framework-go v0.1.2-0.20200226031908-1aef12b7b826/go.mod h1:e2VM3jE+OQgICspFVhUkV6n1MmiHXaD+6xG7TxdHaGI=
+github.com/hyperledger/aries-framework-go v0.1.2 h1:7KIj/6Z9xYb+M951/GlIE48LqFAVbTBju1rB/e4zCgk=
 github.com/hyperledger/aries-framework-go v0.1.2/go.mod h1:p7zzPz5BTer52kgbbEaLuNFtZ83Q7GnW1cUnKkIRDc0=
 github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
@@ -104,6 +106,8 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 h1:J9b7z+QKAmPf4YLrFg6oQUotqHQeUNWwkvo7jZp1GLU=
 github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35/go.mod h1:prYjPmNq4d1NPVmpShWobRqXY3q7Vp+80DqgxxUrUIA=
 github.com/rs/cors v1.7.0/go.mod h1:gFx+x8UowdsKA9AchylcLynDq+nNFfI8FkUZdN/jGCU=
+github.com/skip2/go-qrcode v0.0.0-20191027152451-9434209cb086 h1:RYiqpb2ii2Z6J4x0wxK46kvPBbFuZcdhS+CIztmYgZs=
+github.com/skip2/go-qrcode v0.0.0-20191027152451-9434209cb086/go.mod h1:PLPIyL7ikehBD1OAjmKKiOEhbvWyHGaNDjquXMcYABo=
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/square/go-jose/v3 v3.0.0-20191119004800-96c717272387 h1:PjfQbTWDEoNh4v+4NNirclXoCIxjjLXsqSAP1iYxuOM=

pkg/store/vc/store.go

@@ -8,17 +8,21 @@ SPDX-License-Identifier: Apache-2.0
 package vc
 
 import (
+	"encoding/base64"
 	"fmt"
 	"strings"
 	"syscall/js"
 
+	qrcode "github.com/skip2/go-qrcode"
+
 	"github.com/hyperledger/aries-framework-go/pkg/doc/verifiable"
 	"github.com/hyperledger/aries-framework-go/pkg/storage"
 	verifiablestore "github.com/hyperledger/aries-framework-go/pkg/store/verifiable"
 )
 
 const (
 	friendlyNamePreFix = "fr_"
+	responseType       = "Response"
 )
 
 type provider interface {
@@ -46,6 +50,7 @@ func RegisterHandleJSCallback(ctx provider) error {
 	js.Global().Set("storeVC", js.FuncOf(c.storeVC))
 	js.Global().Set("populateVC", js.FuncOf(c.populateVC))
 	js.Global().Set("getVC", js.FuncOf(c.getVC))
+	js.Global().Set("createQRCode", js.FuncOf(c.createQRCode))
 
 	return nil
 }
@@ -60,7 +65,7 @@ func (c *callback) storeVC(this js.Value, inputs []js.Value) interface{} {
 	// https://github.com/golang/go/issues/26382
 	go func() {
 		m := make(map[string]interface{})
-		m["dataType"] = "Response"
+		m["dataType"] = responseType
 		m["data"] = "success"
 		vcData := inputs[0].Get("credential").Get("data").String()
 		vc, err := verifiable.NewUnverifiedCredential([]byte(vcData))
@@ -108,7 +113,7 @@ func (c *callback) getVC(this js.Value, inputs []js.Value) interface{} {
 	// https://github.com/golang/go/issues/26382
 	go func() {
 		m := make(map[string]interface{})
-		m["dataType"] = "Response"
+		m["dataType"] = responseType
 
 		vcID, err := c.vcFriendlyNameStore.Get(friendlyNamePreFix + inputs[1].String())
 		if err != nil {
@@ -137,3 +142,56 @@ func (c *callback) getVC(this js.Value, inputs []js.Value) interface{} {
 
 	return nil
 }
+
+func (c *callback) createQRCode(this js.Value, inputs []js.Value) interface{} {
+	// https://github.com/golang/go/issues/26382
+	// todo unit-test this function https://github.com/trustbloc/edge-agent/issues/54
+	go func() {
+		m := make(map[string]interface{})
+		m["dataType"] = responseType
+
+		vcID, err := c.vcFriendlyNameStore.Get(friendlyNamePreFix + inputs[0].String())
+		if err != nil {
+			m["data"] = fmt.Sprintf("failed to get in vc friendly name store: %s", err.Error())
+			return
+		}
+
+		vc, err := c.store.GetVC(string(vcID))
+		if err != nil {
+			m["data"] = fmt.Sprintf("failed to get in vc store: %s", err.Error())
+			return
+		}
+		vcBytes, err := vc.MarshalJSON()
+		if err != nil {
+			m["data"] = fmt.Sprintf("failed to marshal vc: %s", err.Error())
+			return
+		}
+		generateQRCode(string(vcBytes))
+	}()
+
+	return nil
+}
+
+func generateQRCode(data string) {
+	var generateQRCode js.Func
+
+	document := js.Global().Get("document")
+
+	generateQRCode = js.FuncOf(func(this js.Value, args []js.Value) interface{} {
+		if len(data) > 0 {
+			fmt.Println("Building QR Code for", data)
+
+			png, err := qrcode.Encode(data, qrcode.Medium, 256)
+			if err != nil {
+				fmt.Println("Failed generating QR Code. Error=", err.Error())
+			}
+
+			b64Encoded := base64.StdEncoding.EncodeToString(png)
+			image := document.Call("getElementById", "qr-result")
+			image.Call("setAttribute", "src", "data:image/png;base64, "+b64Encoded)
+		}
+		return nil
+	})
+
+	document.Call("getElementById", "getVCBtn").Call("addEventListener", "click", generateQRCode)
+}