cdk/crates/cdk/examples/p2pk.rs

use std::str::FromStr;
use std::sync::Arc;
use std::time::Duration;

use cdk::amount::SplitTarget;
use cdk::cdk_database::WalletMemoryDatabase;
use cdk::error::Error;
use cdk::nuts::{Conditions, CurrencyUnit, SecretKey, SpendingConditions};
use cdk::wallet::Wallet;
use cdk::{Amount, UncheckedUrl};
use rand::Rng;
use tokio::time::sleep;

#[tokio::main]
async fn main() -> Result<(), Error> {
    let localstore = WalletMemoryDatabase::default();
    let seed = rand::thread_rng().gen::<[u8; 32]>();

    let mint_url = UncheckedUrl::from_str("https://testnut.cashu.space").unwrap();
    let unit = CurrencyUnit::Sat;
    let amount = Amount::from(10);

    let mut wallet = Wallet::new(Arc::new(localstore), &seed, vec![]);

    let quote = wallet
        .mint_quote(mint_url.clone(), amount, unit.clone())
        .await
        .unwrap();

    println!("Minting nuts ...");

    loop {
        let status = wallet
            .mint_quote_status(mint_url.clone(), &quote.id)
            .await
            .unwrap();

        println!("Quote status: {}", status.paid);

        if status.paid {
            break;
        }

        sleep(Duration::from_secs(5)).await;
    }

    let _receive_amount = wallet
        .mint(mint_url.clone(), &quote.id, SplitTarget::default(), None)
        .await
        .unwrap();

    let secret = SecretKey::generate();

    let spending_conditions =
        SpendingConditions::new_p2pk(secret.public_key(), Conditions::default());

    let token = wallet
        .send(
            &mint_url,
            unit,
            None,
            amount,
            &SplitTarget::None,
            Some(spending_conditions),
        )
        .await
        .unwrap();

    println!("Created token locked to pubkey: {}", secret.public_key());
    println!("{}", token);

    wallet.add_p2pk_signing_key(secret).await;

    let amount = wallet
        .receive(&token, &SplitTarget::default(), None)
        .await
        .unwrap();

    println!("Redeamed locked token worth: {}", u64::from(amount));

    Ok(())
}