if user_agent
      .map(|user_agent| {
        user_agent.as_str().contains("Safari/")
          && !user_agent.as_str().contains("Chrome/")
          && !user_agent.as_str().contains("Chromium/")
      })
      .unwrap_or_default()
    {
      Ok(
        Self::static_asset(Path("/favicon.png".to_string()))
          .await
          .into_response(),
      )
    } else {
      Ok(
        (
          [(
            header::CONTENT_SECURITY_POLICY,
            HeaderValue::from_static("default-src 'unsafe-inline'"),
          )],
          Self::static_asset(Path("/favicon.svg".to_string())).await?,
        )
          .into_response(),
      )
    }
  }

  async fn feed(
    Extension(page_config): Extension<Arc<PageConfig>>,
    Extension(index): Extension<Arc<Index>>,
  ) -> ServerResult<Response> {
    let mut builder = rss::ChannelBuilder::default();

    let chain = page_config.chain;
    match chain {
      Chain::Mainnet => builder.title("Inscriptions".to_string()),
      _ => builder.title(format!("Inscriptions – {chain:?}")),