}

  fn from_decimal(decimal: &str) -> Result<Self> {
    let (height, offset) = decimal
      .split_once('.')
      .ok_or_else(|| anyhow!("missing period"))?;
    let height = Height(height.parse()?);
    let offset = offset.parse::<u64>()?;

    if offset >= height.subsidy() {
      bail!("invalid block offset");
    }

    Ok(height.starting_sat() + offset)
  }

  fn from_percentile(percentile: &str) -> Result<Self> {
    if !percentile.ends_with('%') {
      bail!("invalid percentile: {}", percentile);
    }

    let percentile = percentile[..percentile.len() - 1].parse::<f64>()?;

    if percentile < 0.0 {
      bail!("invalid percentile: {}", percentile);
    }

    let last = Sat::LAST.n() as f64;

    let n = (percentile / 100.0 * last).round();

    if n > last {
      bail!("invalid percentile: {}", percentile);
    }

    #[allow(clippy::cast_sign_loss, clippy::cast_possible_truncation)]
    Ok(Sat(n as u64))
  }
}

impl PartialEq<u64> for Sat {
  fn eq(&self, other: &u64) -> bool {
    self.0 == *other