use color_eyre::Result;
use subxt::{
    utils::H256,
    client::OnlineClient,
};

use crate::{
    casper_network,
    CasperConfig,
};

pub async fn stored_range(
    online_client: &OnlineClient<CasperConfig>,
    at_hash: Option<&H256>,
) -> Result<Option<(u32, u32)>> {
    let storage_key = casper_network::storage().historical().stored_range();
    let maybe_stored_range = super::do_storage_call(online_client, &storage_key, at_hash).await?;
    Ok(maybe_stored_range)
}