WIP: feat: payment processor

.github/workflows/ci.yml

@@ -97,10 +97,9 @@ jobs:
             -p cdk-axum,
             -p cdk-cln,
             -p cdk-lnd,
-            -p cdk-phoenixd,
-            -p cdk-strike,
             -p cdk-lnbits,
             -p cdk-fake-wallet,
+            -p cdk-payment-processor,
             --bin cdk-cli,
             --bin cdk-mintd,
             --bin cdk-mintd --no-default-features --features swagger,
@@ -210,12 +209,11 @@ jobs:
             -p cdk --no-default-features --features "mint mint",
             -p cdk-axum,
             -p cdk-axum --no-default-features --features redis,
-            -p cdk-strike,
             -p cdk-lnbits,
-            -p cdk-phoenixd,
             -p cdk-fake-wallet,
             -p cdk-cln,
             -p cdk-mint-rpc,
+            -p cdk-payment-processor,
           ]
     steps:
       - name: checkout

crates/cdk-cln/src/lib.rs

@@ -63,12 +63,12 @@ impl Cln {
 impl MintLightning for Cln {
     type Err = cdk_lightning::Error;
 
-    fn get_settings(&self) -> Settings {
-        Settings {
+    async fn get_settings(&self) -> Result<Settings, Self::Err> {
+        Ok(Settings {
             mpp: true,
             unit: CurrencyUnit::Msat,
             invoice_description: true,
-        }
+        })
     }
 
     /// Is wait invoice active

crates/cdk-common/src/lightning.rs

@@ -41,9 +41,15 @@ pub enum Error {
     /// Amount Error
     #[error(transparent)]
     Amount(#[from] crate::amount::Error),
+    /// NUT04 Error
+    #[error(transparent)]
+    NUT04(#[from] crate::nuts::nut04::Error),
     /// NUT05 Error
     #[error(transparent)]
     NUT05(#[from] crate::nuts::nut05::Error),
+    /// Custom
+    #[error("`{0}`")]
+    Custom(String),
 }
 
 /// MintLighting Trait
@@ -53,7 +59,7 @@ pub trait MintLightning {
     type Err: Into<Error> + From<Error>;
 
     /// Base Unit
-    fn get_settings(&self) -> Settings;
+    async fn get_settings(&self) -> Result<Settings, Self::Err>;
 
     /// Create a new invoice
     async fn create_invoice(

crates/cdk-fake-wallet/Cargo.toml

@@ -11,6 +11,7 @@ description = "CDK fake ln backend"
 
 [dependencies]
 async-trait = "0.1.74"
+anyhow = "1"
 bitcoin = { version = "0.32.2", default-features = false }
 cdk = { path = "../cdk", version = "0.7.1", default-features = false, features = ["mint"] }
 futures = { version = "0.3.28", default-features = false }

crates/cdk-fake-wallet/src/lib.rs

@@ -49,7 +49,7 @@ pub struct FakeWallet {
 }
 
 impl FakeWallet {
-    /// Creat new [`FakeWallet`]
+    /// Create new [`FakeWallet`]
     pub fn new(
         fee_reserve: FeeReserve,
         payment_states: HashMap<String, MeltQuoteState>,
@@ -99,12 +99,12 @@ impl Default for FakeInvoiceDescription {
 impl MintLightning for FakeWallet {
     type Err = cdk_lightning::Error;
 
-    fn get_settings(&self) -> Settings {
-        Settings {
+    async fn get_settings(&self) -> Result<Settings, Self::Err> {
+        Ok(Settings {
             mpp: true,
             unit: CurrencyUnit::Msat,
             invoice_description: true,
-        }
+        })
     }
 
     fn is_wait_invoice_active(&self) -> bool {
@@ -266,7 +266,7 @@ impl MintLightning for FakeWallet {
             payment_lookup_id: request_lookup_id.to_string(),
             status,
             total_spent: Amount::ZERO,
-            unit: self.get_settings().unit,
+            unit: self.get_settings().await?.unit,
         })
     }
 }

crates/cdk-integration-tests/src/init_fake_wallet.rs

@@ -41,12 +41,14 @@ where
     let localstore = Arc::new(database);
     mint_builder = mint_builder.with_localstore(localstore.clone());
 
-    mint_builder = mint_builder.add_ln_backend(
-        CurrencyUnit::Sat,
-        PaymentMethod::Bolt11,
-        MintMeltLimits::new(1, 5_000),
-        Arc::new(fake_wallet),
-    );
+    mint_builder = mint_builder
+        .add_ln_backend(
+            CurrencyUnit::Sat,
+            PaymentMethod::Bolt11,
+            MintMeltLimits::new(1, 5_000),
+            Arc::new(fake_wallet),
+        )
+        .await?;
 
     let fee_reserve = FeeReserve {
         min_fee_reserve: 1.into(),
@@ -55,12 +57,14 @@ where
 
     let fake_wallet = FakeWallet::new(fee_reserve, HashMap::default(), HashSet::default(), 0);
 
-    mint_builder = mint_builder.add_ln_backend(
-        CurrencyUnit::Usd,
-        PaymentMethod::Bolt11,
-        MintMeltLimits::new(1, 5_000),
-        Arc::new(fake_wallet),
-    );
+    mint_builder = mint_builder
+        .add_ln_backend(
+            CurrencyUnit::Usd,
+            PaymentMethod::Bolt11,
+            MintMeltLimits::new(1, 5_000),
+            Arc::new(fake_wallet),
+        )
+        .await?;
 
     let mnemonic = Mnemonic::generate(12)?;
 

crates/cdk-integration-tests/src/init_pure_tests.rs

@@ -168,20 +168,22 @@ pub async fn create_and_start_test_mint() -> anyhow::Result<Arc<Mint>> {
         percent_fee_reserve: 1.0,
     };
 
-    let ln_fake_backend = Arc::new(FakeWallet::new(
+    let ln_fake_backend = FakeWallet::new(
         fee_reserve.clone(),
         HashMap::default(),
         HashSet::default(),
         0,
-    ));
-
-    mint_builder = mint_builder.add_ln_backend(
-        CurrencyUnit::Sat,
-        PaymentMethod::Bolt11,
-        MintMeltLimits::new(1, 1_000),
-        ln_fake_backend,
     );
 
+    mint_builder = mint_builder
+        .add_ln_backend(
+            CurrencyUnit::Sat,
+            PaymentMethod::Bolt11,
+            MintMeltLimits::new(1, 1_000),
+            Arc::new(ln_fake_backend),
+        )
+        .await?;
+
     let mnemonic = Mnemonic::generate(12)?;
 
     mint_builder = mint_builder

crates/cdk-integration-tests/src/init_regtest.rs

@@ -159,12 +159,14 @@ where
     let localstore = Arc::new(database);
     mint_builder = mint_builder.with_localstore(localstore.clone());
 
-    mint_builder = mint_builder.add_ln_backend(
-        CurrencyUnit::Sat,
-        PaymentMethod::Bolt11,
-        MintMeltLimits::new(1, 5_000),
-        Arc::new(lighting),
-    );
+    mint_builder = mint_builder
+        .add_ln_backend(
+            CurrencyUnit::Sat,
+            PaymentMethod::Bolt11,
+            MintMeltLimits::new(1, 5_000),
+            Arc::new(lighting),
+        )
+        .await?;
 
     let mnemonic = Mnemonic::generate(12)?;
 

crates/cdk-integration-tests/tests/mint.rs

@@ -458,12 +458,14 @@ async fn test_correct_keyset() -> Result<()> {
     let localstore = Arc::new(database);
     mint_builder = mint_builder.with_localstore(localstore.clone());
 
-    mint_builder = mint_builder.add_ln_backend(
-        CurrencyUnit::Sat,
-        PaymentMethod::Bolt11,
-        MintMeltLimits::new(1, 5_000),
-        Arc::new(fake_wallet),
-    );
+    mint_builder = mint_builder
+        .add_ln_backend(
+            CurrencyUnit::Sat,
+            PaymentMethod::Bolt11,
+            MintMeltLimits::new(1, 5_000),
+            Arc::new(fake_wallet),
+        )
+        .await?;
 
     mint_builder = mint_builder
         .with_name("regtest mint".to_string())

crates/cdk-lnbits/src/lib.rs

@@ -67,12 +67,12 @@ impl LNbits {
 impl MintLightning for LNbits {
     type Err = cdk_lightning::Error;
 
-    fn get_settings(&self) -> Settings {
-        Settings {
+    async fn get_settings(&self) -> Result<Settings, Self::Err> {
+        Ok(Settings {
             mpp: false,
             unit: CurrencyUnit::Sat,
             invoice_description: true,
-        }
+        })
     }
 
     fn is_wait_invoice_active(&self) -> bool {
@@ -312,7 +312,7 @@ impl MintLightning for LNbits {
                 payment.details.amount.unsigned_abs()
                     + payment.details.fee.unsigned_abs() / MSAT_IN_SAT,
             ),
-            unit: self.get_settings().unit,
+            unit: self.get_settings().await?.unit,
         };
 
         Ok(pay_response)

crates/cdk-lnd/src/lib.rs

@@ -79,12 +79,12 @@ impl MintLightning for Lnd {
     type Err = cdk_lightning::Error;
 
     #[instrument(skip_all)]
-    fn get_settings(&self) -> Settings {
-        Settings {
+    async fn get_settings(&self) -> Result<Settings, Self::Err> {
+        Ok(Settings {
             mpp: true,
             unit: CurrencyUnit::Msat,
             invoice_description: true,
-        }
+        })
     }
 
     #[instrument(skip_all)]
@@ -477,7 +477,7 @@ impl MintLightning for Lnd {
                         payment_preimage: None,
                         status: MeltQuoteState::Unknown,
                         total_spent: Amount::ZERO,
-                        unit: self.get_settings().unit,
+                        unit: self.get_settings().await?.unit,
                     });
                 } else {
                     return Err(cdk_lightning::Error::UnknownPaymentState);
@@ -496,7 +496,7 @@ impl MintLightning for Lnd {
                             payment_preimage: Some(update.payment_preimage),
                             status: MeltQuoteState::Unknown,
                             total_spent: Amount::ZERO,
-                            unit: self.get_settings().unit,
+                            unit: self.get_settings().await?.unit,
                         },
                         PaymentStatus::InFlight => {
                             // Continue waiting for the next update
@@ -520,7 +520,7 @@ impl MintLightning for Lnd {
                             payment_preimage: Some(update.payment_preimage),
                             status: MeltQuoteState::Failed,
                             total_spent: Amount::ZERO,
-                            unit: self.get_settings().unit,
+                            unit: self.get_settings().await?.unit,
                         },
                     };
 

crates/cdk-mintd/Cargo.toml

@@ -28,12 +28,11 @@ cdk-sqlite = { path = "../cdk-sqlite", version = "0.7.1", default-features = fal
 ] }
 cdk-cln = { path = "../cdk-cln", version = "0.7.1", default-features = false }
 cdk-lnbits = { path = "../cdk-lnbits", version = "0.7.1", default-features = false }
-cdk-phoenixd = { path = "../cdk-phoenixd", version = "0.7.1", default-features = false }
 cdk-lnd = { path = "../cdk-lnd", version = "0.7.1", default-features = false }
 cdk-fake-wallet = { path = "../cdk-fake-wallet", version = "0.7.1", default-features = false }
-cdk-strike = { path = "../cdk-strike", version = "0.7.1" }
 cdk-axum = { path = "../cdk-axum", version = "0.7.1", default-features = false }
 cdk-mint-rpc = { path = "../cdk-mint-rpc", version = "0.7.1", default-features = false, optional = true }
+cdk-payment-processor = { path = "../cdk-payment-processor", version = "0.7.1", default-features = false }
 config = { version = "0.13.3", features = ["toml"] }
 clap = { version = "~4.0.32", features = ["derive"] }
 bitcoin = { version = "0.32.2", features = [

crates/cdk-mintd/src/config.rs

@@ -47,10 +47,8 @@ pub enum LnBackend {
     #[default]
     None,
     Cln,
-    Strike,
     LNbits,
     FakeWallet,
-    Phoenixd,
     Lnd,
 }
 
@@ -60,10 +58,8 @@ impl std::str::FromStr for LnBackend {
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         match s.to_lowercase().as_str() {
             "cln" => Ok(LnBackend::Cln),
-            "strike" => Ok(LnBackend::Strike),
             "lnbits" => Ok(LnBackend::LNbits),
             "fakewallet" => Ok(LnBackend::FakeWallet),
-            "phoenixd" => Ok(LnBackend::Phoenixd),
             "lnd" => Ok(LnBackend::Lnd),
             _ => Err(format!("Unknown Lightning backend: {}", s)),
         }
@@ -93,12 +89,6 @@ impl Default for Ln {
     }
 }
 
-#[derive(Debug, Clone, Serialize, Deserialize, Default)]
-pub struct Strike {
-    pub api_key: String,
-    pub supported_units: Option<Vec<CurrencyUnit>>,
-}
-
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 pub struct LNbits {
     pub admin_api_key: String,
@@ -126,15 +116,6 @@ pub struct Lnd {
     pub reserve_fee_min: Amount,
 }
 
-#[derive(Debug, Clone, Serialize, Deserialize, Default)]
-pub struct Phoenixd {
-    pub api_password: String,
-    pub api_url: String,
-    pub bolt12: bool,
-    pub fee_percent: f32,
-    pub reserve_fee_min: Amount,
-}
-
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct FakeWallet {
     pub supported_units: Vec<CurrencyUnit>,
@@ -199,9 +180,7 @@ pub struct Settings {
     pub mint_info: MintInfo,
     pub ln: Ln,
     pub cln: Option<Cln>,
-    pub strike: Option<Strike>,
     pub lnbits: Option<LNbits>,
-    pub phoenixd: Option<Phoenixd>,
     pub lnd: Option<Lnd>,
     pub fake_wallet: Option<FakeWallet>,
     pub database: Database,
@@ -291,18 +270,10 @@ impl Settings {
                 settings.cln.is_some(),
                 "CLN backend requires a valid config."
             ),
-            LnBackend::Strike => assert!(
-                settings.strike.is_some(),
-                "Strike backend requires a valid config."
-            ),
             LnBackend::LNbits => assert!(
                 settings.lnbits.is_some(),
                 "LNbits backend requires a valid config"
             ),
-            LnBackend::Phoenixd => assert!(
-                settings.phoenixd.is_some(),
-                "Phoenixd backend requires a valid config"
-            ),
             LnBackend::Lnd => {
                 assert!(
                     settings.lnd.is_some(),