pub fn execute(&self, context: &Context) -> anyhow::Result<()> {

    let location: &str = &self.location.clone().unwrap_or_else(|| context.keys_location());

    assert!(!location.is_empty(), "Location must be provided");

    let path = Path::new(location);

    if path.exists() && path.is_dir() {

      let entries = fs::read_dir(path)?

        .filter_map(Result::ok)

        .filter(|entry| entry.path().extension().and_then(|ext| ext.to_str()) == Some("key"))

        .map(|entry| {

          entry

            .path()

            .file_stem()

            .and_then(|stem| stem.to_str())

            .unwrap_or("")

            .to_string()

        })

        .collect::<Vec<_>>();

      if entries.is_empty() {

        println!("No keys found in location");

        return Ok(());

      }

      let mut table = Table::new();

      table.set_format(*consts::FORMAT_CLEAN);

      table.set_titles(row![Fbb->"Name", Fbb->"Key ID", Fbb->"Fingerprint"]);

      for entry in entries {

        let key_name: &str = &entry.clone();

        let filename_with_ext = format!("{key_name}.key");

        let key_path = Path::new(location).join(filename_with_ext);

        let mut secret_key_string = File::open(key_path)?;

        let (signed_secret_key, _) = SignedSecretKey::from_armor_single(&mut secret_key_string)?;

        signed_secret_key.verify()?;

        let key_id = hex::encode(signed_secret_key.key_id());

        let fingerprint = hex::encode(signed_secret_key.fingerprint().as_bytes());

        table.add_row(row![b->&key_name, Fg->&key_id, Fg->&fingerprint]);

      let msg = style("Available keys:").bold().cyan();

      println!();

      println!("{msg}");

      println!();

      table.printstd();

    } else {

      println!("Location does not exist or is not a directory");

    }

    Ok(())

  }