extern crate bdk;
extern crate env_logger;
extern crate log;
use std::error::Error;
use bdk::bitcoin::Network;
use bdk::descriptor::{policy::BuildSatisfaction, ExtractPolicy, IntoWalletDescriptor};
use bdk::wallet::signer::SignersContainer;
fn main() -> Result<(), Box<dyn Error>> {
env_logger::init_from_env(
env_logger::Env::default().filter_or(env_logger::DEFAULT_FILTER_ENV, "info"),
);
let secp = bitcoin::secp256k1::Secp256k1::new();
let desc = "wsh(multi(2,tprv8ZgxMBicQKsPdpkqS7Eair4YxjcuuvDPNYmKX3sCniCf16tHEVrjjiSXEkFRnUH77yXc6ZcwHHcLNfjdi5qUvw3VDfgYiH5mNsj5izuiu2N/1/*,tpubD6NzVbkrYhZ4XHndKkuB8FifXm8r5FQHwrN6oZuWCz13qb93rtgKvD4PQsqC4HP4yhV3tA2fqr2RbY5mNXfM7RxXUoeABoDtsFUq2zJq6YK/1/*))";
let (wallet_desc, keymap) = desc.into_wallet_descriptor(&secp, Network::Testnet)?;
log::info!("Example Descriptor for policy analysis : {}", wallet_desc);
let signers_container = SignersContainer::build(keymap, &wallet_desc, &secp);
let policy = wallet_desc
.extract_policy(&signers_container, BuildSatisfaction::None, &secp)?
.expect("We expect a policy");
log::info!("Derived Policy for the descriptor {:#?}", policy);
Ok(())
}