Update auto-generated bindings
[ldk-c-bindings] / lightning-c-bindings / src / lightning / offers / invoice.rs
index 778d5b417b8557776cd885af7c074cfe79b91acf..2385fd4b86f8db47004b7e1005a9e6864252f9aa 100644 (file)
@@ -8,9 +8,9 @@
 
 //! Data structures and encoding for `invoice` messages.
 //!
-//! An [`Invoice`] can be built from a parsed [`InvoiceRequest`] for the \"offer to be paid\" flow or
-//! from a [`Refund`] as an \"offer for money\" flow. The expected recipient of the payment then sends
-//! the invoice to the intended payer, who will then pay it.
+//! A [`Bolt12Invoice`] can be built from a parsed [`InvoiceRequest`] for the \"offer to be paid\"
+//! flow or from a [`Refund`] as an \"offer for money\" flow. The expected recipient of the payment
+//! then sends the invoice to the intended payer, who will then pay it.
 //!
 //! The payment recipient must include a [`PaymentHash`], so as to reveal the preimage upon payment
 //! receipt, and one or more [`BlindedPath`]s for the payer to use when sending the payment.
 //! # use lightning::offers::invoice::BlindedPayInfo;
 //! # use lightning::blinded_path::BlindedPath;
 //! #
-//! # fn create_payment_paths() -> Vec<(BlindedPath, BlindedPayInfo)> { unimplemented!() }
+//! # fn create_payment_paths() -> Vec<(BlindedPayInfo, BlindedPath)> { unimplemented!() }
 //! # fn create_payment_hash() -> PaymentHash { unimplemented!() }
 //! #
-//! # fn parse_invoice_request(bytes: Vec<u8>) -> Result<(), lightning::offers::parse::ParseError> {
+//! # fn parse_invoice_request(bytes: Vec<u8>) -> Result<(), lightning::offers::parse::Bolt12ParseError> {
 //! let payment_paths = create_payment_paths();
 //! let payment_hash = create_payment_hash();
 //! let secp_ctx = Secp256k1::new();
 //!     .allow_mpp()
 //!     .fallback_v0_p2wpkh(&wpubkey_hash)
 //!     .build()?
-//!     .sign::<_, Infallible>(|digest| Ok(secp_ctx.sign_schnorr_no_aux_rand(digest, &keys)))
+//!     .sign::<_, Infallible>(
+//!         |message| Ok(secp_ctx.sign_schnorr_no_aux_rand(message.as_ref().as_digest(), &keys))
+//!     )
 //!     .expect(\"failed verifying signature\")
 //!     .write(&mut buffer)
 //!     .unwrap();
 //! # Ok(())
 //! # }
 //!
-//! # fn parse_refund(bytes: Vec<u8>) -> Result<(), lightning::offers::parse::ParseError> {
+//! # fn parse_refund(bytes: Vec<u8>) -> Result<(), lightning::offers::parse::Bolt12ParseError> {
 //! # let payment_paths = create_payment_paths();
 //! # let payment_hash = create_payment_hash();
 //! # let secp_ctx = Secp256k1::new();
@@ -77,7 +79,9 @@
 //!     .allow_mpp()
 //!     .fallback_v0_p2wpkh(&wpubkey_hash)
 //!     .build()?
-//!     .sign::<_, Infallible>(|digest| Ok(secp_ctx.sign_schnorr_no_aux_rand(digest, &keys)))
+//!     .sign::<_, Infallible>(
+//!         |message| Ok(secp_ctx.sign_schnorr_no_aux_rand(message.as_ref().as_digest(), &keys))
+//!     )
 //!     .expect(\"failed verifying signature\")
 //!     .write(&mut buffer)
 //!     .unwrap();
@@ -87,6 +91,7 @@
 //! ```
 
 use alloc::str::FromStr;
+use alloc::string::String;
 use core::ffi::c_void;
 use core::convert::Infallible;
 use bitcoin::hashes::Hash;
@@ -95,18 +100,23 @@ use crate::c_types::*;
 use alloc::{vec::Vec, boxed::Box};
 
 
-use lightning::offers::invoice::UnsignedInvoice as nativeUnsignedInvoiceImport;
-pub(crate) type nativeUnsignedInvoice = nativeUnsignedInvoiceImport<'static>;
+use lightning::offers::invoice::UnsignedBolt12Invoice as nativeUnsignedBolt12InvoiceImport;
+pub(crate) type nativeUnsignedBolt12Invoice = nativeUnsignedBolt12InvoiceImport;
 
-/// A semantically valid [`Invoice`] that hasn't been signed.
+/// A semantically valid [`Bolt12Invoice`] that hasn't been signed.
+///
+/// # Serialization
+///
+/// This is serialized as a TLV stream, which includes TLV records from the originating message. As
+/// such, it may include unknown, odd TLV records.
 #[must_use]
 #[repr(C)]
-pub struct UnsignedInvoice {
+pub struct UnsignedBolt12Invoice {
        /// A pointer to the opaque Rust object.
 
        /// Nearly everywhere, inner must be non-null, however in places where
        /// the Rust equivalent takes an Option, it may be set to null to indicate None.
-       pub inner: *mut nativeUnsignedInvoice,
+       pub inner: *mut nativeUnsignedBolt12Invoice,
        /// Indicates that this is the only struct which contains the same pointer.
 
        /// Rust functions which take ownership of an object provided via an argument require
@@ -114,45 +124,682 @@ pub struct UnsignedInvoice {
        pub is_owned: bool,
 }
 
-impl Drop for UnsignedInvoice {
+impl Drop for UnsignedBolt12Invoice {
        fn drop(&mut self) {
-               if self.is_owned && !<*mut nativeUnsignedInvoice>::is_null(self.inner) {
+               if self.is_owned && !<*mut nativeUnsignedBolt12Invoice>::is_null(self.inner) {
                        let _ = unsafe { Box::from_raw(ObjOps::untweak_ptr(self.inner)) };
                }
        }
 }
-/// Frees any resources used by the UnsignedInvoice, if is_owned is set and inner is non-NULL.
+/// Frees any resources used by the UnsignedBolt12Invoice, if is_owned is set and inner is non-NULL.
 #[no_mangle]
-pub extern "C" fn UnsignedInvoice_free(this_obj: UnsignedInvoice) { }
+pub extern "C" fn UnsignedBolt12Invoice_free(this_obj: UnsignedBolt12Invoice) { }
 #[allow(unused)]
 /// Used only if an object of this type is returned as a trait impl by a method
-pub(crate) extern "C" fn UnsignedInvoice_free_void(this_ptr: *mut c_void) {
-       let _ = unsafe { Box::from_raw(this_ptr as *mut nativeUnsignedInvoice) };
+pub(crate) extern "C" fn UnsignedBolt12Invoice_free_void(this_ptr: *mut c_void) {
+       let _ = unsafe { Box::from_raw(this_ptr as *mut nativeUnsignedBolt12Invoice) };
 }
 #[allow(unused)]
-impl UnsignedInvoice {
-       pub(crate) fn get_native_ref(&self) -> &'static nativeUnsignedInvoice {
+impl UnsignedBolt12Invoice {
+       pub(crate) fn get_native_ref(&self) -> &'static nativeUnsignedBolt12Invoice {
                unsafe { &*ObjOps::untweak_ptr(self.inner) }
        }
-       pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeUnsignedInvoice {
+       pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeUnsignedBolt12Invoice {
                unsafe { &mut *ObjOps::untweak_ptr(self.inner) }
        }
        /// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
-       pub(crate) fn take_inner(mut self) -> *mut nativeUnsignedInvoice {
+       pub(crate) fn take_inner(mut self) -> *mut nativeUnsignedBolt12Invoice {
                assert!(self.is_owned);
                let ret = ObjOps::untweak_ptr(self.inner);
                self.inner = core::ptr::null_mut();
                ret
        }
 }
-/// The public key corresponding to the key needed to sign the invoice.
+/// Returns the [`TaggedHash`] of the invoice to sign.
 #[must_use]
 #[no_mangle]
-pub extern "C" fn UnsignedInvoice_signing_pubkey(this_arg: &crate::lightning::offers::invoice::UnsignedInvoice) -> crate::c_types::PublicKey {
+pub extern "C" fn UnsignedBolt12Invoice_tagged_hash(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::lightning::offers::merkle::TaggedHash {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.tagged_hash();
+       crate::lightning::offers::merkle::TaggedHash { inner: unsafe { ObjOps::nonnull_ptr_to_inner((ret as *const lightning::offers::merkle::TaggedHash<>) as *mut _) }, is_owned: false }
+}
+
+
+use lightning::offers::invoice::Bolt12Invoice as nativeBolt12InvoiceImport;
+pub(crate) type nativeBolt12Invoice = nativeBolt12InvoiceImport;
+
+/// A `Bolt12Invoice` is a payment request, typically corresponding to an [`Offer`] or a [`Refund`].
+///
+/// An invoice may be sent in response to an [`InvoiceRequest`] in the case of an offer or sent
+/// directly after scanning a refund. It includes all the information needed to pay a recipient.
+///
+/// [`Offer`]: crate::offers::offer::Offer
+/// [`Refund`]: crate::offers::refund::Refund
+/// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
+#[must_use]
+#[repr(C)]
+pub struct Bolt12Invoice {
+       /// A pointer to the opaque Rust object.
+
+       /// Nearly everywhere, inner must be non-null, however in places where
+       /// the Rust equivalent takes an Option, it may be set to null to indicate None.
+       pub inner: *mut nativeBolt12Invoice,
+       /// Indicates that this is the only struct which contains the same pointer.
+
+       /// Rust functions which take ownership of an object provided via an argument require
+       /// this to be true and invalidate the object pointed to by inner.
+       pub is_owned: bool,
+}
+
+impl Drop for Bolt12Invoice {
+       fn drop(&mut self) {
+               if self.is_owned && !<*mut nativeBolt12Invoice>::is_null(self.inner) {
+                       let _ = unsafe { Box::from_raw(ObjOps::untweak_ptr(self.inner)) };
+               }
+       }
+}
+/// Frees any resources used by the Bolt12Invoice, if is_owned is set and inner is non-NULL.
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_free(this_obj: Bolt12Invoice) { }
+#[allow(unused)]
+/// Used only if an object of this type is returned as a trait impl by a method
+pub(crate) extern "C" fn Bolt12Invoice_free_void(this_ptr: *mut c_void) {
+       let _ = unsafe { Box::from_raw(this_ptr as *mut nativeBolt12Invoice) };
+}
+#[allow(unused)]
+impl Bolt12Invoice {
+       pub(crate) fn get_native_ref(&self) -> &'static nativeBolt12Invoice {
+               unsafe { &*ObjOps::untweak_ptr(self.inner) }
+       }
+       pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeBolt12Invoice {
+               unsafe { &mut *ObjOps::untweak_ptr(self.inner) }
+       }
+       /// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
+       pub(crate) fn take_inner(mut self) -> *mut nativeBolt12Invoice {
+               assert!(self.is_owned);
+               let ret = ObjOps::untweak_ptr(self.inner);
+               self.inner = core::ptr::null_mut();
+               ret
+       }
+}
+impl Clone for Bolt12Invoice {
+       fn clone(&self) -> Self {
+               Self {
+                       inner: if <*mut nativeBolt12Invoice>::is_null(self.inner) { core::ptr::null_mut() } else {
+                               ObjOps::heap_alloc(unsafe { &*ObjOps::untweak_ptr(self.inner) }.clone()) },
+                       is_owned: true,
+               }
+       }
+}
+#[allow(unused)]
+/// Used only if an object of this type is returned as a trait impl by a method
+pub(crate) extern "C" fn Bolt12Invoice_clone_void(this_ptr: *const c_void) -> *mut c_void {
+       Box::into_raw(Box::new(unsafe { (*(this_ptr as *mut nativeBolt12Invoice)).clone() })) as *mut c_void
+}
+#[no_mangle]
+/// Creates a copy of the Bolt12Invoice
+pub extern "C" fn Bolt12Invoice_clone(orig: &Bolt12Invoice) -> Bolt12Invoice {
+       orig.clone()
+}
+/// The chains that may be used when paying a requested invoice.
+///
+/// From [`Offer::chains`]; `None` if the invoice was created in response to a [`Refund`].
+///
+/// [`Offer::chains`]: crate::offers::offer::Offer::chains
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_offer_chains(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::derived::COption_CVec_ThirtyTwoBytesZZ {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.offer_chains();
+       let mut local_ret = if ret.is_none() { crate::c_types::derived::COption_CVec_ThirtyTwoBytesZZ::None } else { crate::c_types::derived::COption_CVec_ThirtyTwoBytesZZ::Some( { let mut local_ret_0 = Vec::new(); for mut item in ret.unwrap().drain(..) { local_ret_0.push( { crate::c_types::ThirtyTwoBytes { data: item.to_bytes() } }); }; local_ret_0.into() }) };
+       local_ret
+}
+
+/// The chain that must be used when paying the invoice; selected from [`offer_chains`] if the
+/// invoice originated from an offer.
+///
+/// From [`InvoiceRequest::chain`] or [`Refund::chain`].
+///
+/// [`offer_chains`]: Self::offer_chains
+/// [`InvoiceRequest::chain`]: crate::offers::invoice_request::InvoiceRequest::chain
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_chain(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::ThirtyTwoBytes {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.chain();
+       crate::c_types::ThirtyTwoBytes { data: ret.to_bytes() }
+}
+
+/// Opaque bytes set by the originating [`Offer`].
+///
+/// From [`Offer::metadata`]; `None` if the invoice was created in response to a [`Refund`] or
+/// if the [`Offer`] did not set it.
+///
+/// [`Offer`]: crate::offers::offer::Offer
+/// [`Offer::metadata`]: crate::offers::offer::Offer::metadata
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_metadata(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::derived::COption_CVec_u8ZZ {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.metadata();
+       let mut local_ret = if ret.is_none() { crate::c_types::derived::COption_CVec_u8ZZ::None } else { crate::c_types::derived::COption_CVec_u8ZZ::Some(/* WARNING: CLONING CONVERSION HERE! &Option<Enum> is otherwise un-expressable. */ { let mut local_ret_0 = Vec::new(); for mut item in (*ret.as_ref().unwrap()).clone().drain(..) { local_ret_0.push( { item }); }; local_ret_0.into() }) };
+       local_ret
+}
+
+/// The minimum amount required for a successful payment of a single item.
+///
+/// From [`Offer::amount`]; `None` if the invoice was created in response to a [`Refund`] or if
+/// the [`Offer`] did not set it.
+///
+/// [`Offer`]: crate::offers::offer::Offer
+/// [`Offer::amount`]: crate::offers::offer::Offer::amount
+///
+/// Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_amount(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::lightning::offers::offer::Amount {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.amount();
+       let mut local_ret = crate::lightning::offers::offer::Amount { inner: unsafe { (if ret.is_none() { core::ptr::null() } else { ObjOps::nonnull_ptr_to_inner( { (ret.unwrap()) }) } as *const lightning::offers::offer::Amount<>) as *mut _ }, is_owned: false };
+       local_ret
+}
+
+/// Features pertaining to the originating [`Offer`].
+///
+/// From [`Offer::offer_features`]; `None` if the invoice was created in response to a
+/// [`Refund`].
+///
+/// [`Offer`]: crate::offers::offer::Offer
+/// [`Offer::offer_features`]: crate::offers::offer::Offer::offer_features
+///
+/// Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_offer_features(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::lightning::ln::features::OfferFeatures {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.offer_features();
+       let mut local_ret = crate::lightning::ln::features::OfferFeatures { inner: unsafe { (if ret.is_none() { core::ptr::null() } else { ObjOps::nonnull_ptr_to_inner( { (ret.unwrap()) }) } as *const lightning::ln::features::OfferFeatures<>) as *mut _ }, is_owned: false };
+       local_ret
+}
+
+/// A complete description of the purpose of the originating offer or refund.
+///
+/// From [`Offer::description`] or [`Refund::description`].
+///
+/// [`Offer::description`]: crate::offers::offer::Offer::description
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_description(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::lightning::util::string::PrintableString {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.description();
+       crate::lightning::util::string::PrintableString { inner: ObjOps::heap_alloc(ret), is_owned: true }
+}
+
+/// Duration since the Unix epoch when an invoice should no longer be requested.
+///
+/// From [`Offer::absolute_expiry`] or [`Refund::absolute_expiry`].
+///
+/// [`Offer::absolute_expiry`]: crate::offers::offer::Offer::absolute_expiry
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_absolute_expiry(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::derived::COption_u64Z {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.absolute_expiry();
+       let mut local_ret = if ret.is_none() { crate::c_types::derived::COption_u64Z::None } else { crate::c_types::derived::COption_u64Z::Some( { ret.unwrap().as_secs() }) };
+       local_ret
+}
+
+/// The issuer of the offer or refund.
+///
+/// From [`Offer::issuer`] or [`Refund::issuer`].
+///
+/// [`Offer::issuer`]: crate::offers::offer::Offer::issuer
+///
+/// Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_issuer(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::lightning::util::string::PrintableString {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.issuer();
+       let mut local_ret = crate::lightning::util::string::PrintableString { inner: if ret.is_none() { core::ptr::null_mut() } else {  { ObjOps::heap_alloc((ret.unwrap())) } }, is_owned: true };
+       local_ret
+}
+
+/// Paths to the recipient originating from publicly reachable nodes.
+///
+/// From [`Offer::paths`] or [`Refund::paths`].
+///
+/// [`Offer::paths`]: crate::offers::offer::Offer::paths
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_message_paths(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::derived::CVec_BlindedPathZ {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.message_paths();
+       let mut local_ret_clone = Vec::new(); local_ret_clone.extend_from_slice(ret); let mut ret = local_ret_clone; let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { crate::lightning::blinded_path::BlindedPath { inner: ObjOps::heap_alloc(item), is_owned: true } }); };
+       local_ret.into()
+}
+
+/// The quantity of items supported.
+///
+/// From [`Offer::supported_quantity`]; `None` if the invoice was created in response to a
+/// [`Refund`].
+///
+/// [`Offer::supported_quantity`]: crate::offers::offer::Offer::supported_quantity
+///
+/// Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_supported_quantity(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::lightning::offers::offer::Quantity {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.supported_quantity();
+       let mut local_ret = crate::lightning::offers::offer::Quantity { inner: if ret.is_none() { core::ptr::null_mut() } else {  { ObjOps::heap_alloc((ret.unwrap())) } }, is_owned: true };
+       local_ret
+}
+
+/// An unpredictable series of bytes from the payer.
+///
+/// From [`InvoiceRequest::payer_metadata`] or [`Refund::payer_metadata`].
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_payer_metadata(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::u8slice {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.payer_metadata();
+       let mut local_ret = crate::c_types::u8slice::from_slice(ret);
+       local_ret
+}
+
+/// Features pertaining to requesting an invoice.
+///
+/// From [`InvoiceRequest::invoice_request_features`] or [`Refund::features`].
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_invoice_request_features(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::lightning::ln::features::InvoiceRequestFeatures {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.invoice_request_features();
+       crate::lightning::ln::features::InvoiceRequestFeatures { inner: unsafe { ObjOps::nonnull_ptr_to_inner((ret as *const lightning::ln::features::InvoiceRequestFeatures<>) as *mut _) }, is_owned: false }
+}
+
+/// The quantity of items requested or refunded for.
+///
+/// From [`InvoiceRequest::quantity`] or [`Refund::quantity`].
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_quantity(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::derived::COption_u64Z {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.quantity();
+       let mut local_ret = if ret.is_none() { crate::c_types::derived::COption_u64Z::None } else { crate::c_types::derived::COption_u64Z::Some( { ret.unwrap() }) };
+       local_ret
+}
+
+/// A possibly transient pubkey used to sign the invoice request or to send an invoice for a
+/// refund in case there are no [`message_paths`].
+///
+/// [`message_paths`]: Self::message_paths
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_payer_id(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::PublicKey {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.payer_id();
+       crate::c_types::PublicKey::from_rust(&ret)
+}
+
+/// A payer-provided note reflected back in the invoice.
+///
+/// From [`InvoiceRequest::payer_note`] or [`Refund::payer_note`].
+///
+/// Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_payer_note(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::lightning::util::string::PrintableString {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.payer_note();
+       let mut local_ret = crate::lightning::util::string::PrintableString { inner: if ret.is_none() { core::ptr::null_mut() } else {  { ObjOps::heap_alloc((ret.unwrap())) } }, is_owned: true };
+       local_ret
+}
+
+/// Duration since the Unix epoch when the invoice was created.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_created_at(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> u64 {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.created_at();
+       ret.as_secs()
+}
+
+/// Duration since [`Bolt12Invoice::created_at`] when the invoice has expired and therefore
+/// should no longer be paid.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_relative_expiry(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> u64 {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.relative_expiry();
+       ret.as_secs()
+}
+
+/// Whether the invoice has expired.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_is_expired(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> bool {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.is_expired();
+       ret
+}
+
+/// SHA256 hash of the payment preimage that will be given in return for paying the invoice.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_payment_hash(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::ThirtyTwoBytes {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.payment_hash();
+       crate::c_types::ThirtyTwoBytes { data: ret.0 }
+}
+
+/// The minimum amount required for a successful payment of the invoice.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_amount_msats(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> u64 {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.amount_msats();
+       ret
+}
+
+/// Features pertaining to paying an invoice.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_invoice_features(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::lightning::ln::features::Bolt12InvoiceFeatures {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.invoice_features();
+       crate::lightning::ln::features::Bolt12InvoiceFeatures { inner: unsafe { ObjOps::nonnull_ptr_to_inner((ret as *const lightning::ln::features::Bolt12InvoiceFeatures<>) as *mut _) }, is_owned: false }
+}
+
+/// The public key corresponding to the key used to sign the invoice.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn UnsignedBolt12Invoice_signing_pubkey(this_arg: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::PublicKey {
        let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.signing_pubkey();
        crate::c_types::PublicKey::from_rust(&ret)
 }
 
+/// The chains that may be used when paying a requested invoice.
+///
+/// From [`Offer::chains`]; `None` if the invoice was created in response to a [`Refund`].
+///
+/// [`Offer::chains`]: crate::offers::offer::Offer::chains
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_offer_chains(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::derived::COption_CVec_ThirtyTwoBytesZZ {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.offer_chains();
+       let mut local_ret = if ret.is_none() { crate::c_types::derived::COption_CVec_ThirtyTwoBytesZZ::None } else { crate::c_types::derived::COption_CVec_ThirtyTwoBytesZZ::Some( { let mut local_ret_0 = Vec::new(); for mut item in ret.unwrap().drain(..) { local_ret_0.push( { crate::c_types::ThirtyTwoBytes { data: item.to_bytes() } }); }; local_ret_0.into() }) };
+       local_ret
+}
+
+/// The chain that must be used when paying the invoice; selected from [`offer_chains`] if the
+/// invoice originated from an offer.
+///
+/// From [`InvoiceRequest::chain`] or [`Refund::chain`].
+///
+/// [`offer_chains`]: Self::offer_chains
+/// [`InvoiceRequest::chain`]: crate::offers::invoice_request::InvoiceRequest::chain
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_chain(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::ThirtyTwoBytes {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.chain();
+       crate::c_types::ThirtyTwoBytes { data: ret.to_bytes() }
+}
+
+/// Opaque bytes set by the originating [`Offer`].
+///
+/// From [`Offer::metadata`]; `None` if the invoice was created in response to a [`Refund`] or
+/// if the [`Offer`] did not set it.
+///
+/// [`Offer`]: crate::offers::offer::Offer
+/// [`Offer::metadata`]: crate::offers::offer::Offer::metadata
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_metadata(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::derived::COption_CVec_u8ZZ {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.metadata();
+       let mut local_ret = if ret.is_none() { crate::c_types::derived::COption_CVec_u8ZZ::None } else { crate::c_types::derived::COption_CVec_u8ZZ::Some(/* WARNING: CLONING CONVERSION HERE! &Option<Enum> is otherwise un-expressable. */ { let mut local_ret_0 = Vec::new(); for mut item in (*ret.as_ref().unwrap()).clone().drain(..) { local_ret_0.push( { item }); }; local_ret_0.into() }) };
+       local_ret
+}
+
+/// The minimum amount required for a successful payment of a single item.
+///
+/// From [`Offer::amount`]; `None` if the invoice was created in response to a [`Refund`] or if
+/// the [`Offer`] did not set it.
+///
+/// [`Offer`]: crate::offers::offer::Offer
+/// [`Offer::amount`]: crate::offers::offer::Offer::amount
+///
+/// Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_amount(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::lightning::offers::offer::Amount {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.amount();
+       let mut local_ret = crate::lightning::offers::offer::Amount { inner: unsafe { (if ret.is_none() { core::ptr::null() } else { ObjOps::nonnull_ptr_to_inner( { (ret.unwrap()) }) } as *const lightning::offers::offer::Amount<>) as *mut _ }, is_owned: false };
+       local_ret
+}
+
+/// Features pertaining to the originating [`Offer`].
+///
+/// From [`Offer::offer_features`]; `None` if the invoice was created in response to a
+/// [`Refund`].
+///
+/// [`Offer`]: crate::offers::offer::Offer
+/// [`Offer::offer_features`]: crate::offers::offer::Offer::offer_features
+///
+/// Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_offer_features(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::lightning::ln::features::OfferFeatures {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.offer_features();
+       let mut local_ret = crate::lightning::ln::features::OfferFeatures { inner: unsafe { (if ret.is_none() { core::ptr::null() } else { ObjOps::nonnull_ptr_to_inner( { (ret.unwrap()) }) } as *const lightning::ln::features::OfferFeatures<>) as *mut _ }, is_owned: false };
+       local_ret
+}
+
+/// A complete description of the purpose of the originating offer or refund.
+///
+/// From [`Offer::description`] or [`Refund::description`].
+///
+/// [`Offer::description`]: crate::offers::offer::Offer::description
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_description(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::lightning::util::string::PrintableString {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.description();
+       crate::lightning::util::string::PrintableString { inner: ObjOps::heap_alloc(ret), is_owned: true }
+}
+
+/// Duration since the Unix epoch when an invoice should no longer be requested.
+///
+/// From [`Offer::absolute_expiry`] or [`Refund::absolute_expiry`].
+///
+/// [`Offer::absolute_expiry`]: crate::offers::offer::Offer::absolute_expiry
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_absolute_expiry(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::derived::COption_u64Z {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.absolute_expiry();
+       let mut local_ret = if ret.is_none() { crate::c_types::derived::COption_u64Z::None } else { crate::c_types::derived::COption_u64Z::Some( { ret.unwrap().as_secs() }) };
+       local_ret
+}
+
+/// The issuer of the offer or refund.
+///
+/// From [`Offer::issuer`] or [`Refund::issuer`].
+///
+/// [`Offer::issuer`]: crate::offers::offer::Offer::issuer
+///
+/// Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_issuer(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::lightning::util::string::PrintableString {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.issuer();
+       let mut local_ret = crate::lightning::util::string::PrintableString { inner: if ret.is_none() { core::ptr::null_mut() } else {  { ObjOps::heap_alloc((ret.unwrap())) } }, is_owned: true };
+       local_ret
+}
+
+/// Paths to the recipient originating from publicly reachable nodes.
+///
+/// From [`Offer::paths`] or [`Refund::paths`].
+///
+/// [`Offer::paths`]: crate::offers::offer::Offer::paths
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_message_paths(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::derived::CVec_BlindedPathZ {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.message_paths();
+       let mut local_ret_clone = Vec::new(); local_ret_clone.extend_from_slice(ret); let mut ret = local_ret_clone; let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { crate::lightning::blinded_path::BlindedPath { inner: ObjOps::heap_alloc(item), is_owned: true } }); };
+       local_ret.into()
+}
+
+/// The quantity of items supported.
+///
+/// From [`Offer::supported_quantity`]; `None` if the invoice was created in response to a
+/// [`Refund`].
+///
+/// [`Offer::supported_quantity`]: crate::offers::offer::Offer::supported_quantity
+///
+/// Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_supported_quantity(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::lightning::offers::offer::Quantity {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.supported_quantity();
+       let mut local_ret = crate::lightning::offers::offer::Quantity { inner: if ret.is_none() { core::ptr::null_mut() } else {  { ObjOps::heap_alloc((ret.unwrap())) } }, is_owned: true };
+       local_ret
+}
+
+/// An unpredictable series of bytes from the payer.
+///
+/// From [`InvoiceRequest::payer_metadata`] or [`Refund::payer_metadata`].
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_payer_metadata(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::u8slice {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.payer_metadata();
+       let mut local_ret = crate::c_types::u8slice::from_slice(ret);
+       local_ret
+}
+
+/// Features pertaining to requesting an invoice.
+///
+/// From [`InvoiceRequest::invoice_request_features`] or [`Refund::features`].
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_invoice_request_features(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::lightning::ln::features::InvoiceRequestFeatures {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.invoice_request_features();
+       crate::lightning::ln::features::InvoiceRequestFeatures { inner: unsafe { ObjOps::nonnull_ptr_to_inner((ret as *const lightning::ln::features::InvoiceRequestFeatures<>) as *mut _) }, is_owned: false }
+}
+
+/// The quantity of items requested or refunded for.
+///
+/// From [`InvoiceRequest::quantity`] or [`Refund::quantity`].
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_quantity(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::derived::COption_u64Z {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.quantity();
+       let mut local_ret = if ret.is_none() { crate::c_types::derived::COption_u64Z::None } else { crate::c_types::derived::COption_u64Z::Some( { ret.unwrap() }) };
+       local_ret
+}
+
+/// A possibly transient pubkey used to sign the invoice request or to send an invoice for a
+/// refund in case there are no [`message_paths`].
+///
+/// [`message_paths`]: Self::message_paths
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_payer_id(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::PublicKey {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.payer_id();
+       crate::c_types::PublicKey::from_rust(&ret)
+}
+
+/// A payer-provided note reflected back in the invoice.
+///
+/// From [`InvoiceRequest::payer_note`] or [`Refund::payer_note`].
+///
+/// Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_payer_note(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::lightning::util::string::PrintableString {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.payer_note();
+       let mut local_ret = crate::lightning::util::string::PrintableString { inner: if ret.is_none() { core::ptr::null_mut() } else {  { ObjOps::heap_alloc((ret.unwrap())) } }, is_owned: true };
+       local_ret
+}
+
+/// Duration since the Unix epoch when the invoice was created.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_created_at(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> u64 {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.created_at();
+       ret.as_secs()
+}
+
+/// Duration since [`Bolt12Invoice::created_at`] when the invoice has expired and therefore
+/// should no longer be paid.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_relative_expiry(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> u64 {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.relative_expiry();
+       ret.as_secs()
+}
+
+/// Whether the invoice has expired.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_is_expired(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> bool {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.is_expired();
+       ret
+}
+
+/// SHA256 hash of the payment preimage that will be given in return for paying the invoice.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_payment_hash(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::ThirtyTwoBytes {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.payment_hash();
+       crate::c_types::ThirtyTwoBytes { data: ret.0 }
+}
+
+/// The minimum amount required for a successful payment of the invoice.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_amount_msats(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> u64 {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.amount_msats();
+       ret
+}
+
+/// Features pertaining to paying an invoice.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_invoice_features(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::lightning::ln::features::Bolt12InvoiceFeatures {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.invoice_features();
+       crate::lightning::ln::features::Bolt12InvoiceFeatures { inner: unsafe { ObjOps::nonnull_ptr_to_inner((ret as *const lightning::ln::features::Bolt12InvoiceFeatures<>) as *mut _) }, is_owned: false }
+}
+
+/// The public key corresponding to the key used to sign the invoice.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_signing_pubkey(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::PublicKey {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.signing_pubkey();
+       crate::c_types::PublicKey::from_rust(&ret)
+}
+
+/// Signature of the invoice verified using [`Bolt12Invoice::signing_pubkey`].
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_signature(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::SchnorrSignature {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.signature();
+       crate::c_types::SchnorrSignature::from_rust(&ret)
+}
+
+/// Hash that was used for signing the invoice.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_signable_hash(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::ThirtyTwoBytes {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.signable_hash();
+       crate::c_types::ThirtyTwoBytes { data: ret }
+}
+
+/// Verifies that the invoice was for a request or refund created using the given key. Returns
+/// the associated [`PaymentId`] to use when sending the payment.
+#[must_use]
+#[no_mangle]
+pub extern "C" fn Bolt12Invoice_verify(this_arg: &crate::lightning::offers::invoice::Bolt12Invoice, key: &crate::lightning::ln::inbound_payment::ExpandedKey) -> crate::c_types::derived::CResult_ThirtyTwoBytesNoneZ {
+       let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.verify(key.get_native_ref(), secp256k1::global::SECP256K1);
+       let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { crate::c_types::ThirtyTwoBytes { data: o.0 } }).into(), Err(mut e) => crate::c_types::CResultTempl::err( { () /*e*/ }).into() };
+       local_ret
+}
+
+#[no_mangle]
+/// Serialize the UnsignedBolt12Invoice object into a byte array which can be read by UnsignedBolt12Invoice_read
+pub extern "C" fn UnsignedBolt12Invoice_write(obj: &crate::lightning::offers::invoice::UnsignedBolt12Invoice) -> crate::c_types::derived::CVec_u8Z {
+       crate::c_types::serialize_obj(unsafe { &*obj }.get_native_ref())
+}
+#[no_mangle]
+pub(crate) extern "C" fn UnsignedBolt12Invoice_write_void(obj: *const c_void) -> crate::c_types::derived::CVec_u8Z {
+       crate::c_types::serialize_obj(unsafe { &*(obj as *const nativeUnsignedBolt12Invoice) })
+}
+#[no_mangle]
+/// Serialize the Bolt12Invoice object into a byte array which can be read by Bolt12Invoice_read
+pub extern "C" fn Bolt12Invoice_write(obj: &crate::lightning::offers::invoice::Bolt12Invoice) -> crate::c_types::derived::CVec_u8Z {
+       crate::c_types::serialize_obj(unsafe { &*obj }.get_native_ref())
+}
+#[no_mangle]
+pub(crate) extern "C" fn Bolt12Invoice_write_void(obj: *const c_void) -> crate::c_types::derived::CVec_u8Z {
+       crate::c_types::serialize_obj(unsafe { &*(obj as *const nativeBolt12Invoice) })
+}
 
 use lightning::offers::invoice::BlindedPayInfo as nativeBlindedPayInfoImport;
 pub(crate) type nativeBlindedPayInfo = nativeBlindedPayInfoImport;