chore: enable coder inbox by default (#17077)

Add a flag to enable Coder Inbox by default, as well as supporting disabling the feature.

coderd/notifications/notifications_test.go

@@ -1856,6 +1856,90 @@ func TestNotificationDuplicates(t *testing.T) {
 	require.NoError(t, err)
 }
 
+func TestNotificationTargetMatrix(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name             string
+		defaultMethod    database.NotificationMethod
+		defaultEnabled   bool
+		inboxEnabled     bool
+		expectedEnqueued int
+	}{
+		{
+			name:             "NoDefaultAndNoInbox",
+			defaultMethod:    database.NotificationMethodSmtp,
+			defaultEnabled:   false,
+			inboxEnabled:     false,
+			expectedEnqueued: 0,
+		},
+		{
+			name:             "DefaultAndNoInbox",
+			defaultMethod:    database.NotificationMethodSmtp,
+			defaultEnabled:   true,
+			inboxEnabled:     false,
+			expectedEnqueued: 1,
+		},
+		{
+			name:             "NoDefaultAndInbox",
+			defaultMethod:    database.NotificationMethodSmtp,
+			defaultEnabled:   false,
+			inboxEnabled:     true,
+			expectedEnqueued: 1,
+		},
+		{
+			name:             "DefaultAndInbox",
+			defaultMethod:    database.NotificationMethodSmtp,
+			defaultEnabled:   true,
+			inboxEnabled:     true,
+			expectedEnqueued: 2,
+		},
+	}
+
+	for _, tt := range tests {
+		tt := tt
+
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			// nolint:gocritic // Unit test.
+			ctx := dbauthz.AsNotifier(testutil.Context(t, testutil.WaitSuperLong))
+			store, pubsub := dbtestutil.NewDB(t)
+			logger := testutil.Logger(t)
+
+			cfg := defaultNotificationsConfig(tt.defaultMethod)
+			cfg.Inbox.Enabled = serpent.Bool(tt.inboxEnabled)
+
+			// If the default method is not enabled, we want to ensure the config
+			// is wiped out.
+			if !tt.defaultEnabled {
+				cfg.SMTP = codersdk.NotificationsEmailConfig{}
+				cfg.Webhook = codersdk.NotificationsWebhookConfig{}
+			}
+
+			mgr, err := notifications.NewManager(cfg, store, pubsub, defaultHelpers(), createMetrics(), logger.Named("manager"))
+			require.NoError(t, err)
+			t.Cleanup(func() {
+				assert.NoError(t, mgr.Stop(ctx))
+			})
+
+			// Set the time to a known value.
+			mClock := quartz.NewMock(t)
+			mClock.Set(time.Date(2024, 1, 15, 9, 0, 0, 0, time.UTC))
+
+			enq, err := notifications.NewStoreEnqueuer(cfg, store, defaultHelpers(), logger.Named("enqueuer"), mClock)
+			require.NoError(t, err)
+			user := createSampleUser(t, store)
+
+			// When: A notification is enqueued, it enqueues the correct amount of notifications.
+			enqueued, err := enq.Enqueue(ctx, user.ID, notifications.TemplateWorkspaceDeleted,
+				map[string]string{"initiator": "danny"}, "test", user.ID)
+			require.NoError(t, err)
+			require.Len(t, enqueued, tt.expectedEnqueued)
+		})
+	}
+}
+
 type fakeHandler struct {
 	mu                sync.RWMutex
 	succeeded, failed []string