send the current user

app/controllers/patrons_controller.rb

@@ -1,11 +1,16 @@
 # frozen_string_literal: true
 
 module DiscoursePatrons
-  class PatronsController < ApplicationController
+  class PatronsController < ::ApplicationController
     skip_before_action :verify_authenticity_token, only: [:create]
 
     def index
       result = {}
+
+      if current_user
+        result[:email] = current_user.email
+      end
+
       render json: result
     end
 

assets/javascripts/discourse/components/stripe-card.js.es6

@@ -48,7 +48,7 @@ export default Ember.Component.extend({
         billing.set(key, undefined);
       }
     };
-    ["name", "phone", "email"].forEach(key => deleteEmpty(key));
+    ["name", "phone"].forEach(key => deleteEmpty(key));
   },
 
   actions: {

assets/javascripts/discourse/templates/components/donation-form.hbs

@@ -69,7 +69,6 @@
           </div>
           <div class="value">
             {{input type="email" value=billing.email}}
-            <div class="desc">{{i18n 'discourse_patrons.payment.optional'}}</div>
           </div>
         </div>
         <div class="display-row">

spec/controllers/discourse_patrons/patrons_controller_spec.rb

@@ -11,6 +11,20 @@ module DiscoursePatrons
         get :index, format: :json
         expect(response).to have_http_status(200)
       end
+
+      it 'has a current user email' do
+        user = Fabricate(:user, email: 'hello@example.com')
+        controller.expects(:current_user).at_least(1).returns(user)
+
+        get :index, format: :json
+
+        expect(JSON.parse(response.body)['email']).to eq 'hello@example.com'
+      end
+
+      it 'has no current user email' do
+        get :index, format: :json
+        expect(JSON.parse(response.body)['email']).to be_nil
+      end
     end
 
     describe 'create' do