use crate::{gdev, Client};

use anyhow::Result;
use futures::join;
use sp_core::{sr25519::Pair, Encode, Pair as _};

pub async fn gen_revoc_doc(api: &Client, pair: &Pair) -> Result<()> {
    let account_id: sp_core::crypto::AccountId32 = pair.public().into();
    let addr_idty_index = gdev::storage().identity().identity_index_of(&account_id);
    let addr_block_hash = gdev::storage().system().block_hash(0);
    let (idty_index, genesis_hash) = join!(
        api.storage().fetch(&addr_idty_index, None,),
        api.storage().fetch(&addr_block_hash, None)
    );
    let idty_index = idty_index?.unwrap();
    let genesis_hash = genesis_hash?.unwrap();
    let payload = (b"revo", genesis_hash, idty_index).encode();
    let signature = pair.sign(&payload);

    println!("0x{}", hex::encode(signature));

    Ok(())
}