add anc

pkg/setting/provider.go

@@ -776,6 +776,16 @@ func (s *settingProvider) PWA(ctx context.Context) *PWASetting {
 	}
 }
 
+// AnnouncementEnabled returns true if announcement is enabled.
+func (s *settingProvider) AnnouncementEnabled(ctx context.Context) bool {
+	return s.getBoolean(ctx, "announcement_enabled", false)
+}
+
+// Announcement returns the site announcement content.
+func (s *settingProvider) Announcement(ctx context.Context) string {
+	return s.getString(ctx, "announcement", "")
+}
+
 func IsTrueValue(val string) bool {
 	return val == "1" || val == "true"
 }