Add REST API for Web Push Notifications subscriptions (#7445)

- POST /api/v1/push/subscription
- PUT /api/v1/push/subscription
- DELETE /api/v1/push/subscription
- New OAuth scope: "push" (required for the above methods)

3 files changed, 91 insertions, 20 deletions

diff --git a/spec/controllers/api/v1/push/subscriptions_controller_spec.rb b/spec/controllers/api/v1/push/subscriptions_controller_spec.rb
new file mode 100644
index 000000000..01146294f
--- /dev/null
+++ b/spec/controllers/api/v1/push/subscriptions_controller_spec.rb
@@ -0,0 +1,83 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Api::V1::Push::SubscriptionsController do
+  render_views
+
+  let(:user)  { Fabricate(:user) }
+  let(:token) { Fabricate(:accessible_access_token, resource_owner_id: user.id, scopes: 'push') }
+
+  before do
+    allow(controller).to receive(:doorkeeper_token) { token }
+  end
+
+  let(:create_payload) do
+    {
+      subscription: {
+        endpoint: 'https://fcm.googleapis.com/fcm/send/fiuH06a27qE:APA91bHnSiGcLwdaxdyqVXNDR9w1NlztsHb6lyt5WDKOC_Z_Q8BlFxQoR8tWFSXUIDdkyw0EdvxTu63iqamSaqVSevW5LfoFwojws8XYDXv_NRRLH6vo2CdgiN4jgHv5VLt2A8ah6lUX',
+        keys: {
+          p256dh: 'BEm_a0bdPDhf0SOsrnB2-ategf1hHoCnpXgQsFj5JCkcoMrMt2WHoPfEYOYPzOIs9mZE8ZUaD7VA5vouy0kEkr8=',
+          auth: 'eH_C8rq2raXqlcBVDa1gLg==',
+        },
+      }
+    }.with_indifferent_access
+  end
+
+  let(:alerts_payload) do
+    {
+      data: {
+        alerts: {
+          follow: true,
+          favourite: false,
+          reblog: true,
+          mention: false,
+        }
+      }
+    }.with_indifferent_access
+  end
+
+  describe 'POST #create' do
+    it 'saves push subscriptions' do
+      post :create, params: create_payload
+
+      push_subscription = Web::PushSubscription.find_by(endpoint: create_payload[:subscription][:endpoint])
+
+      expect(push_subscription.endpoint).to eq(create_payload[:subscription][:endpoint])
+      expect(push_subscription.key_p256dh).to eq(create_payload[:subscription][:keys][:p256dh])
+      expect(push_subscription.key_auth).to eq(create_payload[:subscription][:keys][:auth])
+      expect(push_subscription.user_id).to eq user.id
+      expect(push_subscription.access_token_id).to eq token.id
+    end
+
+    it 'replaces old subscription on repeat calls' do
+      post :create, params: create_payload
+      post :create, params: create_payload
+
+      expect(Web::PushSubscription.where(endpoint: create_payload[:subscription][:endpoint]).count).to eq 1
+    end
+  end
+
+  describe 'PUT #update' do
+    it 'changes alert settings' do
+      post :create, params: create_payload
+      put :update, params: alerts_payload
+
+      push_subscription = Web::PushSubscription.find_by(endpoint: create_payload[:subscription][:endpoint])
+
+      expect(push_subscription.data.dig('alerts', 'follow')).to eq(alerts_payload[:data][:alerts][:follow].to_s)
+      expect(push_subscription.data.dig('alerts', 'favourite')).to eq(alerts_payload[:data][:alerts][:favourite].to_s)
+      expect(push_subscription.data.dig('alerts', 'reblog')).to eq(alerts_payload[:data][:alerts][:reblog].to_s)
+      expect(push_subscription.data.dig('alerts', 'mention')).to eq(alerts_payload[:data][:alerts][:mention].to_s)
+    end
+  end
+
+  describe 'DELETE #destroy' do
+    it 'removes the subscription' do
+      post :create, params: create_payload
+      delete :destroy
+
+      expect(Web::PushSubscription.find_by(endpoint: create_payload[:subscription][:endpoint])).to be_nil
+    end
+  end
+end
diff --git a/spec/controllers/api/web/push_subscriptions_controller_spec.rb b/spec/controllers/api/web/push_subscriptions_controller_spec.rb
index bbf94c5c6..381cdeab9 100644
--- a/spec/controllers/api/web/push_subscriptions_controller_spec.rb
+++ b/spec/controllers/api/web/push_subscriptions_controller_spec.rb
@@ -59,10 +59,10 @@ describe Api::Web::PushSubscriptionsController do
 
         push_subscription = Web::PushSubscription.find_by(endpoint: create_payload[:subscription][:endpoint])
 
-        expect(push_subscription.data['follow']).to eq(alerts_payload[:data][:follow])
-        expect(push_subscription.data['favourite']).to eq(alerts_payload[:data][:favourite])
-        expect(push_subscription.data['reblog']).to eq(alerts_payload[:data][:reblog])
-        expect(push_subscription.data['mention']).to eq(alerts_payload[:data][:mention])
+        expect(push_subscription.data['alerts']['follow']).to eq(alerts_payload[:data][:alerts][:follow].to_s)
+        expect(push_subscription.data['alerts']['favourite']).to eq(alerts_payload[:data][:alerts][:favourite].to_s)
+        expect(push_subscription.data['alerts']['reblog']).to eq(alerts_payload[:data][:alerts][:reblog].to_s)
+        expect(push_subscription.data['alerts']['mention']).to eq(alerts_payload[:data][:alerts][:mention].to_s)
       end
     end
   end
@@ -81,10 +81,10 @@ describe Api::Web::PushSubscriptionsController do
 
       push_subscription = Web::PushSubscription.find_by(endpoint: create_payload[:subscription][:endpoint])
 
-      expect(push_subscription.data['follow']).to eq(alerts_payload[:data][:follow])
-      expect(push_subscription.data['favourite']).to eq(alerts_payload[:data][:favourite])
-      expect(push_subscription.data['reblog']).to eq(alerts_payload[:data][:reblog])
-      expect(push_subscription.data['mention']).to eq(alerts_payload[:data][:mention])
+      expect(push_subscription.data['alerts']['follow']).to eq(alerts_payload[:data][:alerts][:follow].to_s)
+      expect(push_subscription.data['alerts']['favourite']).to eq(alerts_payload[:data][:alerts][:favourite].to_s)
+      expect(push_subscription.data['alerts']['reblog']).to eq(alerts_payload[:data][:alerts][:reblog].to_s)
+      expect(push_subscription.data['alerts']['mention']).to eq(alerts_payload[:data][:alerts][:mention].to_s)
     end
   end
 end
diff --git a/spec/models/web/push_subscription_spec.rb b/spec/models/web/push_subscription_spec.rb
index 574da55ac..c6665611c 100644
--- a/spec/models/web/push_subscription_spec.rb
+++ b/spec/models/web/push_subscription_spec.rb
@@ -2,20 +2,8 @@ require 'rails_helper'
 
 RSpec.describe Web::PushSubscription, type: :model do
   let(:alerts) { { mention: true, reblog: false, follow: true, follow_request: false, favourite: true } }
-  let(:payload_no_alerts) { Web::PushSubscription.new(id: 1, endpoint: 'a', key_p256dh: 'c', key_auth: 'd').as_payload }
-  let(:payload_alerts) { Web::PushSubscription.new(id: 1, endpoint: 'a', key_p256dh: 'c', key_auth: 'd', data: { alerts: alerts }).as_payload }
   let(:push_subscription) { Web::PushSubscription.new(data: { alerts: alerts }) }
 
-  describe '#as_payload' do
-    it 'only returns id and endpoint' do
-      expect(payload_no_alerts.keys).to eq [:id, :endpoint]
-    end
-
-    it 'returns alerts if set' do
-      expect(payload_alerts.keys).to eq [:id, :endpoint, :alerts]
-    end
-  end
-
   describe '#pushable?' do
     it 'obeys alert settings' do
       expect(push_subscription.send(:pushable?, Notification.new(activity_type: 'Mention'))).to eq true