diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 8180094c..81ccb118 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -54,6 +54,7 @@ jobs: build-args: [ mint-token, + melt-token, p2pk, proof-selection, wallet diff --git a/crates/cdk/Cargo.toml b/crates/cdk/Cargo.toml index eb9e5925..e13f53c6 100644 --- a/crates/cdk/Cargo.toml +++ b/crates/cdk/Cargo.toml @@ -68,6 +68,10 @@ getrandom = { version = "0.2", features = ["js"] } name = "mint-token" required-features = ["wallet"] +[[example]] +name = "melt-token" +required-features = ["wallet"] + [[example]] name = "p2pk" required-features = ["wallet"] diff --git a/crates/cdk/examples/melt-token.rs b/crates/cdk/examples/melt-token.rs new file mode 100644 index 00000000..8907b1e9 --- /dev/null +++ b/crates/cdk/examples/melt-token.rs @@ -0,0 +1,90 @@ +use std::sync::Arc; + +use bitcoin::hashes::{sha256, Hash}; +use bitcoin::hex::prelude::FromHex; +use bitcoin::secp256k1::Secp256k1; +use cdk::amount::SplitTarget; +use cdk::error::Error; +use cdk::nuts::nut00::ProofsMethods; +use cdk::nuts::{CurrencyUnit, MintQuoteState, NotificationPayload, SecretKey}; +use cdk::wallet::{Wallet, WalletSubscription}; +use cdk::Amount; +use cdk_sqlite::wallet::memory; +use lightning_invoice::{Currency, InvoiceBuilder, PaymentSecret}; +use rand::Rng; + +#[tokio::main] +async fn main() -> Result<(), Error> { + // Initialize the memory store for the wallet + let localstore = memory::empty().await?; + + // Generate a random seed for the wallet + let seed = rand::thread_rng().gen::<[u8; 32]>(); + + // Define the mint URL and currency unit + let mint_url = "https://testnut.cashu.space"; + let unit = CurrencyUnit::Sat; + let amount = Amount::from(10); + + // Create a new wallet + let wallet = Wallet::new(mint_url, unit, Arc::new(localstore), &seed, None)?; + + // Request a mint quote from the wallet + let quote = wallet.mint_quote(amount, None).await?; + println!("Quote: {:#?}", quote); + + // Subscribe to updates on the mint quote state + let mut subscription = wallet + .subscribe(WalletSubscription::Bolt11MintQuoteState(vec![quote + .id + .clone()])) + .await; + + // Wait for the mint quote to be paid + while let Some(msg) = subscription.recv().await { + if let NotificationPayload::MintQuoteBolt11Response(response) = msg { + if response.state == MintQuoteState::Paid { + break; + } + } + } + + // Mint the received amount + let proofs = wallet.mint("e.id, SplitTarget::default(), None).await?; + let receive_amount = proofs.total_amount()?; + println!("Received {} from mint {}", receive_amount, mint_url); + + // Now melt what we have + // We need to prepare a lightning invoice + let private_key = SecretKey::from_slice( + &<[u8; 32]>::from_hex("e126f68f7eafcc8b74f54d269fe206be715000f94dac067d1c04a8ca3b2db734") + .unwrap(), + ) + .unwrap(); + let mut random_bytes = [1u8; 32]; + rand::thread_rng().fill(&mut random_bytes); + let payment_hash = sha256::Hash::from_slice(&random_bytes).unwrap(); + let payment_secret = PaymentSecret([42u8; 32]); + let invoice_to_be_paid = InvoiceBuilder::new(Currency::Bitcoin) + .amount_milli_satoshis(5 * 1000) + .description("Pay me".into()) + .payment_hash(payment_hash) + .payment_secret(payment_secret) + .current_timestamp() + .min_final_cltv_expiry_delta(144) + .build_signed(|hash| Secp256k1::new().sign_ecdsa_recoverable(hash, &private_key)) + .unwrap() + .to_string(); + println!("Invoice to be paid: {}", invoice_to_be_paid); + + let melt_quote = wallet.melt_quote(invoice_to_be_paid, None).await?; + println!( + "Melt quote: {} {} {:?}", + melt_quote.amount, melt_quote.state, melt_quote, + ); + + let melted = wallet.melt(&melt_quote.id).await?; + println!("Melted: {:?}", melted); + + Ok(()) +} diff --git a/justfile b/justfile index b191ec5e..d178e561 100644 --- a/justfile +++ b/justfile @@ -93,6 +93,7 @@ fake-auth-mint-itest db openid_discovery: run-examples: cargo r --example p2pk cargo r --example mint-token + cargo r --example melt-token cargo r --example proof_selection cargo r --example wallet diff --git a/misc/justfile.custom.just b/misc/justfile.custom.just index b5a20a13..da8819d2 100644 --- a/misc/justfile.custom.just +++ b/misc/justfile.custom.just @@ -22,6 +22,7 @@ check-wasm *ARGS="--target wasm32-unknown-unknown": run-examples: cargo r --example p2pk cargo r --example mint-token + cargo r --example melt-token cargo r --example proof_selection cargo r --example wallet