feat(transfer-tx): Add get token/nftTransfers to public API

Sources/Hedera/TransferTransaction.swift

@@ -83,7 +83,34 @@ public final class TransferTransaction: Transaction {
  uniquingKeysWith: { (first, second) in first })
  }
 
- private var tokenTransfers: [TransferTransaction.TokenTransfer] = [] {
+ public var tokenTransfers: [TokenId: [AccountId: Int64]] {
+ Dictionary(
+ tokenTransfersInner.lazy.map { item in
+ (
+ item.tokenId,
+ Dictionary(
+ item.transfers.lazy.map { ($0.accountId, $0.amount) },
+ uniquingKeysWith: { (first, second) in first }
+ )
+ )
+ },
+ uniquingKeysWith: { (first, second) in first }
+ )
+ }
+
+ public var tokenNftTransfers: [TokenId: [TokenNftTransfer]] {
+ Dictionary(
+ tokenTransfersInner.lazy.map { item in
+ (
+ item.tokenId,
+ item.nftTransfers.map { TokenNftTransfer(nftTransfer: $0, withTokenId: item.tokenId) }
+ )
+ },
+ uniquingKeysWith: { (first, second) in first }
+ )
+ }
+
+ private var tokenTransfersInner: [TransferTransaction.TokenTransfer] = [] {
  willSet {
  ensureNotFrozen(fieldName: "tokenTransfers")
  }
@@ -97,7 +124,7 @@ public final class TransferTransaction: Transaction {
  internal init(protobuf proto: Proto_TransactionBody, _ data: Proto_CryptoTransferTransactionBody) throws {
  // init fields
  transfers = try .fromProtobuf(data.transfers.accountAmounts)
- tokenTransfers = try .fromProtobuf(data.tokenTransfers)
+ tokenTransfersInner = try .fromProtobuf(data.tokenTransfers)
 
  try super.init(protobuf: proto)
  }
@@ -187,11 +214,12 @@ public final class TransferTransaction: Transaction {
  ) -> Self {
  let transfer = Transfer(accountId: accountId, amount: amount, isApproval: approved)
 
- if let firstIndex = tokenTransfers.firstIndex(where: { (tokenTransfer) in tokenTransfer.tokenId == tokenId }) {
- tokenTransfers[firstIndex].expectedDecimals = expectedDecimals
- tokenTransfers[firstIndex].transfers.append(transfer)
+ if let firstIndex = tokenTransfersInner.firstIndex(where: { (tokenTransfer) in tokenTransfer.tokenId == tokenId
+ }) {
+ tokenTransfersInner[firstIndex].expectedDecimals = expectedDecimals
+ tokenTransfersInner[firstIndex].transfers.append(transfer)
  } else {
- tokenTransfers.append(
+ tokenTransfersInner.append(
  TokenTransfer(
  tokenId: tokenId,
  transfers: [transfer],
@@ -216,12 +244,12 @@ public final class TransferTransaction: Transaction {
  isApproval: approved
  )
 
- if let index = tokenTransfers.firstIndex(where: { (transfer) in transfer.tokenId == nftId.tokenId }) {
- var tmp = tokenTransfers[index]
+ if let index = tokenTransfersInner.firstIndex(where: { transfer in transfer.tokenId == nftId.tokenId }) {
+ var tmp = tokenTransfersInner[index]
  tmp.nftTransfers.append(transfer)
- tokenTransfers[index] = tmp
+ tokenTransfersInner[index] = tmp
  } else {
- tokenTransfers.append(
+ tokenTransfersInner.append(
  TokenTransfer(
  tokenId: nftId.tokenId,
  transfers: [],
@@ -236,7 +264,7 @@ public final class TransferTransaction: Transaction {
 
  internal override func validateChecksums(on ledgerId: LedgerId) throws {
  try transfers.validateChecksums(on: ledgerId)
- try tokenTransfers.validateChecksums(on: ledgerId)
+ try tokenTransfersInner.validateChecksums(on: ledgerId)
  try super.validateChecksums(on: ledgerId)
  }
 
@@ -327,7 +355,7 @@ extension TransferTransaction: ToProtobuf {
  internal func toProtobuf() -> Protobuf {
  .with { proto in
  proto.transfers = .with { $0.accountAmounts = transfers.toProtobuf() }
- proto.tokenTransfers = tokenTransfers.toProtobuf()
+ proto.tokenTransfers = tokenTransfersInner.toProtobuf()
  }
  }
 }
@@ -337,3 +365,15 @@ extension TransferTransaction {
  .cryptoTransfer(toProtobuf())
  }
 }
+
+extension TokenNftTransfer {
+ fileprivate init(nftTransfer: TransferTransaction.NftTransfer, withTokenId tokenId: TokenId) {
+ self.init(
+ tokenId: tokenId,
+ sender: nftTransfer.senderAccountId,
+ receiver: nftTransfer.receiverAccountId,
+ serial: nftTransfer.serial,
+ isApproved: nftTransfer.isApproval
+ )
+ }
+}