Fix: send on-chain

mobile/lib/features/wallet/application/wallet_service.dart

@@ -98,9 +98,12 @@ class WalletService {
     };
   }
 
-  Future<void> sendPayment(Destination destination, Amount? amount, {Fee? fee}) async {
-    logger.i("Sending payment of $amount");
-    await rust.api.sendPayment(payment: _createPayment(destination, amount, fee: fee));
+  String sendOnChainPayment(Destination destination, Amount? amount, {Fee? fee}) {
+    var feeApi = fee!.toAPI();
+    var sats = amount!.sats;
+    var address = destination.raw;
+    logger.i("Sending payment of $amount to $address with fee $feeApi");
+    return rust.api.sendOnChainPayment(address: address, amount: sats, fee: feeApi);
   }
 
   String getUnusedAddress() {

mobile/lib/features/wallet/receive_screen.dart

@@ -241,34 +241,51 @@ class BitcoinAddress extends StatelessWidget {
     var address = this.address.replaceAll("bitcoin:", '');
 
     return Container(
-      margin: const EdgeInsets.fromLTRB(0, 15, 0, 0),
-      decoration: BoxDecoration(
-          border: Border.all(color: Colors.grey.shade200),
-          borderRadius: BorderRadius.circular(10),
-          color: tenTenOnePurple.shade200.withOpacity(0.1)),
-      child: Container(
-        padding: const EdgeInsets.all(20),
-        child: Opacity(
-            opacity: 1.0,
-            child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
-              const Row(
-                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                  children: [Text("Address", style: TextStyle(fontSize: 18))]),
-              const SizedBox(height: 5),
-              Row(
-                children: [
-                  Expanded(
-                    child: Text(
-                      address,
-                      overflow: TextOverflow.ellipsis,
-                      maxLines: 1,
-                    ),
-                  ),
-                ],
-              )
-            ])),
-      ),
-    );
+        margin: const EdgeInsets.fromLTRB(0, 15, 0, 0),
+        decoration: BoxDecoration(
+            border: Border.all(color: Colors.grey.shade200),
+            borderRadius: BorderRadius.circular(10),
+            color: tenTenOnePurple.shade200.withOpacity(0.1)),
+        child: GestureDetector(
+          onTap: () {
+            Clipboard.setData(ClipboardData(text: address)).then((_) {
+              showSnackBar(ScaffoldMessenger.of(context), "Address copied to clipboard");
+            });
+          },
+          child: Container(
+            padding: const EdgeInsets.all(20),
+            child: Opacity(
+                opacity: 1.0,
+                child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
+                  Row(mainAxisAlignment: MainAxisAlignment.spaceBetween, children: [
+                    const Text("Address", style: TextStyle(fontSize: 18)),
+                    IconButton(
+                        onPressed: () {
+                          Clipboard.setData(ClipboardData(text: address)).then((_) {
+                            showSnackBar(
+                                ScaffoldMessenger.of(context), "Address copied to clipboard");
+                          });
+                        },
+                        icon: const Icon(
+                          Icons.copy,
+                          size: 16,
+                        ))
+                  ]),
+                  const SizedBox(height: 5),
+                  Row(
+                    children: [
+                      Expanded(
+                        child: Text(
+                          address,
+                          overflow: TextOverflow.ellipsis,
+                          maxLines: 1,
+                        ),
+                      ),
+                    ],
+                  )
+                ])),
+          ),
+        ));
   }
 }
 

mobile/lib/features/wallet/send/confirm_payment_modal.dart

@@ -199,12 +199,14 @@ class ConfirmPayment extends StatelessWidget {
                     }
                     showExecuteUsdpPaymentModal(context, destination, amt, payWithUsdp);
                   } else {
-                    walletService.sendPayment(destination, amt, fee: fee).then((value) {
+                    try {
+                      var txid = walletService.sendOnChainPayment(destination, amt, fee: fee);
+                      showSnackBar(messenger, "Transaction broadcasted $txid");
                       GoRouter.of(context).pop();
-                    }).catchError((error) {
+                    } catch (error) {
                       logger.e("Failed to send payment: $error");
                       showSnackBar(messenger, error.toString());
-                    });
+                    }
                   }
                 }),
             const SizedBox(height: 24),

mobile/lib/features/wallet/send/execute_payment_modal.dart

@@ -80,10 +80,13 @@ class _ExecuteUsdpPaymentState extends State<ExecuteUsdpPayment> {
       if (widget.payWithUsdp) {
         logger.d("Order has been filled, attempting to send payment");
       }
-      walletService.sendPayment(widget.destination, widget.amount).catchError((error) {
+      try {
+        walletService.sendOnChainPayment(widget.destination, widget.amount);
+        setState(() => sent = true);
+      } catch (error) {
         logger.e("Failed to send payment: $error");
         context.read<PaymentChangeNotifier>().failPayment();
-      }).whenComplete(() => setState(() => sent = true));
+      }
     }
 
     switch (paymentChangeNotifier.getPaymentStatus()) {

mobile/lib/features/wallet/send/fee_picker.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
 import 'package:get_10101/common/amount_and_fiat_text.dart';
-import 'package:get_10101/common/amount_text.dart';
 import 'package:get_10101/common/amount_text_input_form_field.dart';
 import 'package:get_10101/common/color.dart';
 import 'package:get_10101/common/domain/model.dart';
@@ -153,8 +152,8 @@ class _FeePickerModalState extends State<_FeePickerModal> {
 
     final amt = Amount.parseAmount(val);
 
-    if (minFee > amt.sats) {
-      return "The minimum fee to broadcast the transaction is ${formatSats(Amount(minFee))}.";
+    if (amt.sats < 1) {
+      return "The minimum fee to broadcast the transaction is 1 sat/vbyte)}.";
     }
 
     return null;

mobile/native/src/api.rs

@@ -634,6 +634,10 @@ pub fn send_payment(payment: SendPayment) -> Result<()> {
     runtime.block_on(async { ln_dlc::send_payment(payment).await })
 }
 
+pub fn send_on_chain_payment(address: String, amount: u64, fee: Fee) -> Result<SyncReturn<String>> {
+    ln_dlc::send_on_chain_payment(address, amount, fee).map(|txid| SyncReturn(txid.to_string()))
+}
+
 pub fn send_preflight_probe(payment: SendPayment) -> Result<u64> {
     let runtime = crate::state::get_or_create_tokio_runtime()?;
     runtime.block_on(async { ln_dlc::estimate_payment_fee_msat(payment).await })

mobile/native/src/ln_dlc/mod.rs

@@ -1153,6 +1153,13 @@ pub async fn send_payment(payment: SendPayment) -> Result<()> {
     Ok(())
 }
 
+pub fn send_on_chain_payment(address: String, amount: u64, fee: Fee) -> Result<Txid> {
+    let address = Address::from_str(&address)?;
+    state::get_node()
+        .inner
+        .send_to_address(&address, amount, fee.into())
+}
+
 pub async fn estimate_payment_fee_msat(payment: SendPayment) -> Result<u64> {
     match payment {
         SendPayment::Lightning { invoice, amount } => {