Updated Swift docs for LDK 0.0.121 (#253)

Author: Roy0Anonymous

docs/building-a-node-with-ldk/closing-a-channel.md

@@ -124,7 +124,8 @@ func handleEvent(event: Event) {
         let outputs = event.getOutputs()
         do {
             let address = ldkManager!.bdkManager.getAddress(addressIndex: .new)!
-            let script = try Address(address: address).scriptPubkey().toBytes()
+            let network = ldkManager!.network == .Testnet ? BitcoinDevKit.Network.testnet : BitcoinDevKit.Network.regtest
+            let script = try Address(address: address, network: network).scriptPubkey().toBytes()
             let res = ldkManager!.myKeysManager.spendSpendableOutputs(
                 descriptors: outputs,
                 outputs: [],

docs/building-a-node-with-ldk/sending-payments.md

@@ -62,13 +62,21 @@ let invoiceStr = // get an invoice from the payee
 let parsedInvoice = Bolt11Invoice.fromStr(s: invoiceStr)
 
 if let invoiceVal = parsedInvoice.getValue() {
-   let invoicePaymentResult = Bindings.payInvoice(
-    invoice: invoiceVal,
-    retryStrategy: Bindings.Retry.initWithTimeout(a: 15),
-    channelmanager: channelManager
+  let invoicePaymentResult = Bindings.paymentParametersFromInvoice(invoice: invoiceVal)
+  guard invoicePaymentResult.isOk() else {
+    return false
+  }
+  let (paymentHash, recipientOnion, routeParams) = Bindings.paymentParametersFromInvoice(invoice: invoiceVal).getValue()!
+  let paymentId = invoice.paymentHash()!
+  let res = channelManager.sendPayment(
+    paymentHash: paymentHash, 
+    recipientOnion: recipientOnion, 
+    paymentId: paymentId, 
+    routeParams: routeParams, 
+    retryStrategy: .initWithTimeout(a: 15)
   )
 
-  if invoicePaymentResult.isOk() {
+  if res.isOk() {
     // Payment Sent
   }
 }

docs/building-a-node-with-ldk/setting-up-a-channel-manager.md

@@ -152,16 +152,18 @@ val feeEstimator: FeeEstimator = FeeEstimator.new_impl(YourFeeEstimator)
   <template v-slot:swift>
 
   ```Swift
-  class MyFeeEstimator: FeeEstimator {
+class MyFeeEstimator: FeeEstimator {
     override func getEstSatPer1000Weight(confirmationTarget: Bindings.ConfirmationTarget) -> UInt32 {
-        if confirmationTarget == .Background {
-            // Fetch Background Feerate
-        } else if confirmationTarget == .Normal {
-            // Fetch Normal Feerate (~6 blocks)
-        } else if confirmationTarget == .HighPriority {
-            // Fetch High Feerate
-        }
-        // Fetch Default Feerate
+      if confirmationTarget == .MinAllowedNonAnchorChannelRemoteFee {
+          return 253
+      } else if confirmationTarget == .ChannelCloseMinimum {
+          return 1000
+      } else if confirmationTarget == .NonAnchorChannelFee {
+          return 7500
+      } else if confirmationTarget == .OnChainSweep {
+          return 7500
+      }
+      return 7500
     }
 }