Sign in button to connect account

app/components/topbar-account-panel/component.js

@@ -1,5 +1,7 @@
 import Component from '@ember/component';
 import { inject as service } from '@ember/service';
+import { computed } from '@ember/object';
+import { isPresent } from '@ember/utils';
 
 export default Component.extend({
 
@@ -8,10 +10,35 @@ export default Component.extend({
   kredits: service(),
   router: service(),
 
+  setupInProgress: false,
+
+  userHasEthereumWallet: computed(function() {
+    return isPresent(window.ethereum);
+  }).volatile(),
+
+  showConnectButton: computed('userHasEthereumWallet',
+                              'kredits.hasAccounts', function() {
+    return this.userHasEthereumWallet &&
+           !this.kredits.hasAccounts;
+  }),
+
   actions: {
 
     signup() {
       this.router.transitionTo('signup');
+    },
+
+    async connectAccount() {
+      try {
+        await window.ethereum.enable();
+        this.set('setupInProgress', true);
+        await this.kredits.setup();
+        this.set('setupInProgress', false);
+        this.router.transitionTo('dashboard');
+      } catch (error) {
+        this.set('setupInProgress', false);
+        console.log('Opening Ethereum wallet failed:', error);
+      }
     }
 
   }

app/components/topbar-account-panel/template.hbs

@@ -1,11 +1,18 @@
 <section id="user-account">
-  {{#if (and kredits.hasAccounts kredits.currentUser)}}
-    {{kredits.currentUser.name}}
-    {{#if kredits.currentUserIsCore}}
-      <span class="core-flag">(core)</span>
-    {{/if}}
+  {{#if setupInProgress}}
+    Connecting account...
   {{else}}
-    Anonymous
-    <button {{action "signup"}} class="small green">Sign up</button>
+    {{#if (and kredits.hasAccounts kredits.currentUser)}}
+      {{kredits.currentUser.name}}
+      {{#if kredits.currentUserIsCore}}
+        <span class="core-flag">(core)</span>
+      {{/if}}
+    {{else}}
+      Anonymous
+      <button {{action "signup"}} class="small">Sign up</button>
+      {{#if showConnectButton}}
+        <button {{action "connectAccount"}} class="small green">Connect account</button>
+      {{/if}}
+    {{/if}}
   {{/if}}
 </section>