// Copyright (C) 2024 Riften Labs AS
//
// This software is licensed under the GNU Affero General Public License (AGPL), version 3.0 or later.
// A copy of the license can be found in the LICENSE file or at https://www.gnu.org/licenses/agpl-3.0.html

use anyhow::{Context, Result};
use bitcoincash::{consensus::deserialize, BlockHeader};
use electrum_client::{Client, ElectrumApi};
use serde_json::Value;

/// Fetch blockchain tip from electrum server
pub fn electrum_get_tip(client: &Client) -> Result<(BlockHeader, u64)> {
    let tip: Value =
        serde_json::from_str(&client.raw_call("blockchain.headers.tip", [])?.to_string())?;

    let height = tip
        .get("height")
        .context("no height")?
        .as_i64()
        .context("no int")?;

    let header = tip
        .get("hex")
        .context("no hex in header")?
        .as_str()
        .context("hex not str")?;

    Ok((deserialize(&hex::decode(header)?)?, height as u64))
}