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SendTokenStore.swift
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SendTokenStore.swift
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// Copyright 2021 The Brave Authors. All rights reserved.
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
import Foundation
import BraveCore
import Strings
import BigNumber
import Combine
/// A store contains data for sending tokens
public class SendTokenStore: ObservableObject, WalletObserverStore {
/// User's visible asset with selected account and chain
@Published var userVisibleAssets: [BraveWallet.BlockchainToken] = []
/// The current selected token to send. Default with nil value.
@Published var selectedSendToken: BraveWallet.BlockchainToken? {
didSet {
update() // need to update `selectedSendTokenBalance` and `selectedSendNFTMetadata`
// Unstoppable Domains are resolved based on currently selected token.
validateSendAddress()
}
}
/// The current selected NFT metadata. Default with nil value.
@Published var selectedSendNFTMetadata: NFTMetadata?
/// The current selected token balance. Default with nil value.
@Published var selectedSendTokenBalance: BDouble?
/// A boolean indicates if this store is making an unapproved tx
@Published var isMakingTx = false
/// The destination account address
@Published var sendAddress = "" {
didSet {
if oldValue != sendAddress {
resolvedAddress = nil
isOffchainResolveRequired = false
}
sendAddressUpdatedTimer?.invalidate()
sendAddressUpdatedTimer = Timer.scheduledTimer(
withTimeInterval: 0.25, // try not to validate for every character entered
repeats: false,
block: { [weak self] _ in
self?.validateSendAddress()
})
}
}
/// An error for input send address. Nil for no error.
@Published var addressError: AddressError?
/// The amount the user inputs to send
@Published var sendAmount = "" {
didSet {
sendAmountUpdatedTimer?.invalidate()
sendAmountUpdatedTimer = Timer.scheduledTimer(
withTimeInterval: 0.25, // try not to validate for every character entered
repeats: false,
block: { [weak self] _ in
self?.validateBalance()
})
}
}
/// An error for input, ex insufficient balance
@Published var sendError: SendError?
/// If we are loading `userAssets`, `allTokens`, and `selectedSendTokenBalance`
@Published var isLoading: Bool = false
/// If we are currently resolving an SNS or ENS address
@Published private(set) var isResolvingAddress: Bool = false
/// The address returned from SNS / ENS
@Published private(set) var resolvedAddress: String?
/// If the current `sendAddress` needs to be resolved offchain
@Published private(set) var isOffchainResolveRequired: Bool = false
enum AddressError: LocalizedError, Equatable {
case sameAsFromAddress
case contractAddress
case notEthAddress
case missingChecksum
case invalidChecksum
case notSolAddress
case snsError(domain: String)
case ensError(domain: String)
case udError(domain: String)
case notFilAddress
var errorDescription: String? {
switch self {
case .sameAsFromAddress:
return Strings.Wallet.sendWarningAddressIsOwn
case .contractAddress:
return Strings.Wallet.sendWarningAddressIsContract
case .notEthAddress:
return Strings.Wallet.sendWarningAddressNotValid
case .missingChecksum:
return Strings.Wallet.sendWarningAddressMissingChecksumInfo
case .invalidChecksum:
return Strings.Wallet.sendWarningAddressInvalidChecksum
case .notSolAddress:
return Strings.Wallet.sendWarningSolAddressNotValid
case .snsError:
return String.localizedStringWithFormat(Strings.Wallet.sendErrorDomainNotRegistered, BraveWallet.CoinType.sol.localizedTitle)
case .ensError:
return String.localizedStringWithFormat(Strings.Wallet.sendErrorDomainNotRegistered, BraveWallet.CoinType.eth.localizedTitle)
case .udError:
return String.localizedStringWithFormat(Strings.Wallet.sendErrorDomainNotRegistered, BraveWallet.CoinType.eth.localizedTitle)
case .notFilAddress:
return Strings.Wallet.sendErrorInvalidRecipientAddress
}
}
var shouldBlockSend: Bool {
switch self {
case .missingChecksum:
return false
default:
return true
}
}
}
enum SendError: LocalizedError {
case insufficientBalance
var errorDescription: String? {
switch self {
case .insufficientBalance: return Strings.Wallet.insufficientBalance
}
}
}
private(set) lazy var selectTokenStore = SelectAccountTokenStore(
didSelect: { [weak self] account, token in
self?.didSelect(account: account, token: token)
},
keyringService: keyringService,
rpcService: rpcService,
walletService: walletService,
assetRatioService: assetRatioService,
ipfsApi: ipfsApi,
userAssetManager: assetManager,
query: prefilledToken?.symbol
)
private let keyringService: BraveWalletKeyringService
private let rpcService: BraveWalletJsonRpcService
private let walletService: BraveWalletBraveWalletService
private let txService: BraveWalletTxService
private let blockchainRegistry: BraveWalletBlockchainRegistry
private let assetRatioService: BraveWalletAssetRatioService
private let ethTxManagerProxy: BraveWalletEthTxManagerProxy
private let solTxManagerProxy: BraveWalletSolanaTxManagerProxy
private var allTokens: [BraveWallet.BlockchainToken] = []
private var sendAddressUpdatedTimer: Timer?
private var sendAmountUpdatedTimer: Timer?
private var prefilledToken: BraveWallet.BlockchainToken?
private var metadataCache: [String: NFTMetadata] = [:]
private let ipfsApi: IpfsAPI
private let assetManager: WalletUserAssetManagerType
private var keyringServiceObserver: KeyringServiceObserver?
private var rpcServiceObserver: JsonRpcServiceObserver?
var isObserving: Bool {
keyringServiceObserver != nil && rpcServiceObserver != nil
}
public init(
keyringService: BraveWalletKeyringService,
rpcService: BraveWalletJsonRpcService,
walletService: BraveWalletBraveWalletService,
txService: BraveWalletTxService,
blockchainRegistry: BraveWalletBlockchainRegistry,
assetRatioService: BraveWalletAssetRatioService,
ethTxManagerProxy: BraveWalletEthTxManagerProxy,
solTxManagerProxy: BraveWalletSolanaTxManagerProxy,
prefilledToken: BraveWallet.BlockchainToken?,
ipfsApi: IpfsAPI,
userAssetManager: WalletUserAssetManagerType
) {
self.keyringService = keyringService
self.rpcService = rpcService
self.walletService = walletService
self.txService = txService
self.blockchainRegistry = blockchainRegistry
self.assetRatioService = assetRatioService
self.ethTxManagerProxy = ethTxManagerProxy
self.solTxManagerProxy = solTxManagerProxy
self.prefilledToken = prefilledToken
self.ipfsApi = ipfsApi
self.assetManager = userAssetManager
self.setupObservers()
}
func tearDown() {
keyringServiceObserver = nil
rpcServiceObserver = nil
selectTokenStore.tearDown()
}
func setupObservers() {
guard !isObserving else { return }
self.keyringServiceObserver = KeyringServiceObserver(
keyringService: keyringService,
_selectedWalletAccountChanged: { [weak self] _ in
guard let self else { return }
self.selectedSendTokenBalance = nil
self.addressError = nil
self.update() // `selectedSendTokenBalance` needs updated for new account
self.validateSendAddress() // `sendAddress` may equal selected account address
}
)
self.rpcServiceObserver = JsonRpcServiceObserver(
rpcService: rpcService,
_chainChangedEvent: { [weak self] _, coin, _ in
guard let self else { return }
self.selectedSendToken = nil
self.selectedSendTokenBalance = nil
if coin != .eth { // if changed to ethereum coin network, address is still valid
// offchain resolve is for ENS-only, for other coin types the address is invalid
self.isOffchainResolveRequired = false
}
self.update() // `selectedSendToken` & `selectedSendTokenBalance` need updated for new chain
self.validateSendAddress() // `sendAddress` may no longer be valid if coin type changed
}
)
self.selectTokenStore.setupObservers()
}
func suggestedAmountTapped(_ amount: ShortcutAmountGrid.Amount) {
var decimalPoint = 6
var rounded = true
if amount == .all {
decimalPoint = Int(selectedSendToken?.decimals ?? 18)
rounded = false
}
sendAmount = ((selectedSendTokenBalance ?? 0) * amount.rawValue).decimalExpansion(precisionAfterDecimalPoint: decimalPoint, rounded: rounded).trimmingTrailingZeros
}
func didSelect(account: BraveWallet.AccountInfo, token: BraveWallet.BlockchainToken) {
Task { @MainActor in
guard let selectedAccount = await keyringService.allAccounts().selectedAccount else {
assertionFailure("selectedAccount should never be nil.")
return
}
if selectedAccount.accountId.uniqueKey != account.accountId.uniqueKey {
_ = await self.keyringService.setSelectedAccount(account.accountId)
}
let selectedChain = await rpcService.network(selectedAccount.coin, origin: nil)
if self.selectedSendToken != token || selectedChain.chainId != token.chainId {
_ = await self.rpcService.setNetwork(token.chainId, coin: token.coin, origin: nil)
self.prefilledToken = token
}
self.update()
}
}
@MainActor private func validatePrefilledToken(on network: inout BraveWallet.NetworkInfo) async {
guard let prefilledToken = self.prefilledToken else {
return
}
if prefilledToken.coin == network.coin && prefilledToken.chainId == network.chainId {
// valid for current network
self.selectedSendToken = prefilledToken
} else {
// need to try and select correct network.
let allNetworksForTokenCoin = await rpcService.allNetworks(prefilledToken.coin)
guard let networkForToken = allNetworksForTokenCoin.first(where: { $0.chainId == prefilledToken.chainId }) else {
// don't set prefilled token if it belongs to a network we don't know
return
}
let success = await rpcService.setNetwork(networkForToken.chainId, coin: networkForToken.coin, origin: nil)
if success {
let accountId = await walletService.ensureSelectedAccount(forChain: networkForToken.coin, chainId: networkForToken.chainId)
if accountId == nil {
assertionFailure("accountId should not be nil. An account should exist for token's chain.")
}
self.selectedSendToken = prefilledToken
}
}
self.prefilledToken = nil
}
/// Cancellable for the last running `update()` Task.
private var updateTask: Task<(), Never>?
/// Updates the `userAssets`, `allTokens`, and `selectedSendTokenBalance`
func update() {
self.updateTask?.cancel()
self.updateTask = Task { @MainActor in
self.isLoading = true
defer { self.isLoading = false }
guard let selectedAccount = await keyringService.allAccounts().selectedAccount else {
assertionFailure("selectedAccount should never be nil.")
return
}
var network = await rpcService.network(selectedAccount.coin, origin: nil)
await validatePrefilledToken(on: &network) // network may change
// fetch user visible assets
let userVisibleAssets = assetManager.getAllUserAssetsInNetworkAssetsByVisibility(networks: [network], visible: true).flatMap { $0.tokens }
let allTokens = await self.blockchainRegistry.allTokens(network.chainId, coin: network.coin)
guard !Task.isCancelled else { return }
if selectedSendToken == nil {
self.selectedSendToken = userVisibleAssets.first(where: { network.isNativeAsset($0) })
?? userVisibleAssets.first(where: { $0.symbol.caseInsensitiveCompare("bat") == .orderedSame })
?? userVisibleAssets.sorted(by: { $0.name < $1.name }).first
}
self.userVisibleAssets = userVisibleAssets
self.allTokens = allTokens
self.validateSendAddress() // `sendAddress` may match a token contract address
// fetch balance for `selectedSendToken`
guard let selectedSendToken = self.selectedSendToken else {
self.selectedSendTokenBalance = nil // no selected account, or send token is nil
return
}
let balance = await self.rpcService.balance(
for: selectedSendToken,
in: selectedAccount.address,
network: network,
decimalFormatStyle: .decimals(precision: Int(selectedSendToken.decimals))
)
if (selectedSendToken.isErc721 || selectedSendToken.isNft), metadataCache[selectedSendToken.id] == nil {
metadataCache[selectedSendToken.id] = await rpcService.fetchNFTMetadata(for: selectedSendToken, ipfsApi: self.ipfsApi)
}
guard !Task.isCancelled else { return }
self.selectedSendTokenBalance = balance
self.selectedSendNFTMetadata = metadataCache[selectedSendToken.id]
self.validateBalance()
}
}
private func makeEIP1559Tx(
chainId: String,
baseData: BraveWallet.TxData,
from accountId: BraveWallet.AccountId,
completion: @escaping (_ success: Bool, _ errMsg: String?) -> Void
) {
let eip1559Data = BraveWallet.TxData1559(baseData: baseData, chainId: chainId, maxPriorityFeePerGas: "", maxFeePerGas: "", gasEstimation: nil)
let txDataUnion = BraveWallet.TxDataUnion(ethTxData1559: eip1559Data)
self.txService.addUnapprovedTransaction(txDataUnion, chainId: chainId, from: accountId) { success, txMetaId, errorMessage in
completion(success, errorMessage)
}
}
private var validateSendAddressTask: Task<Void, Never>?
private func validateSendAddress() {
validateSendAddressTask?.cancel()
validateSendAddressTask = Task { @MainActor in
guard !sendAddress.isEmpty,
let selectedAccount = await keyringService.allAccounts().selectedAccount,
!Task.isCancelled else {
return
}
switch selectedAccount.coin {
case .eth:
await validateEthereumSendAddress(fromAddress: selectedAccount.address)
case .sol:
await validateSolanaSendAddress(fromAddress: selectedAccount.address)
case .fil:
validateFilcoinSendAddress()
case .btc:
break
@unknown default:
break
}
}
}
@MainActor private func validateEthereumSendAddress(fromAddress: String) async {
let normalizedFromAddress = fromAddress.lowercased()
let normalizedToAddress = sendAddress.lowercased()
let isSupportedENSExtension = sendAddress.endsWithSupportedENSExtension
let isSupportedUDExtension = sendAddress.endsWithSupportedUDExtension
if isSupportedENSExtension {
self.resolvedAddress = nil
self.isResolvingAddress = true
defer { self.isResolvingAddress = false }
let domain = sendAddress
let (address, isOffchainConsentRequired, status, _) = await rpcService.ensGetEthAddr(domain)
guard !Task.isCancelled else { return }
if isOffchainConsentRequired {
self.isOffchainResolveRequired = true
self.addressError = nil
return // do not continue unless ens is enabled
}
if status != .success || address.isEmpty {
addressError = .ensError(domain: sendAddress)
return
}
// If found address is the same as the selectedAccounts Wallet Address
if address.lowercased() == normalizedFromAddress {
addressError = .sameAsFromAddress
return
}
guard domain == sendAddress, !Task.isCancelled else {
// address changed while resolving, or validation cancelled.
return
}
// store address for sending
resolvedAddress = address
addressError = nil
} else if isSupportedUDExtension {
await resolveUnstoppableDomain(sendAddress)
} else {
if !sendAddress.isETHAddress {
// 1. check if send address is a valid eth address
addressError = .notEthAddress
} else if normalizedFromAddress == normalizedToAddress {
// 2. check if send address is the same as the from address
addressError = .sameAsFromAddress
} else if (userVisibleAssets.first(where: { $0.contractAddress.lowercased() == normalizedToAddress }) != nil)
|| (allTokens.first(where: { $0.contractAddress.lowercased() == normalizedToAddress }) != nil) {
// 3. check if send address is a contract address
addressError = .contractAddress
} else {
let checksumAddress = await keyringService.checksumEthAddress(sendAddress)
if sendAddress == checksumAddress {
// 4. check if send address is the same as the checksum address from the `KeyringService`
addressError = nil
} else if sendAddress.removingHexPrefix.lowercased() == sendAddress.removingHexPrefix || sendAddress.removingHexPrefix.uppercased() == sendAddress.removingHexPrefix {
// 5. check if send address has each of the alphabetic character as uppercase, or has each of
// the alphabeic character as lowercase
addressError = .missingChecksum
} else {
// 6. send address has mixed with uppercase and lowercase and does not match with the checksum address
addressError = .invalidChecksum
}
}
}
}
@MainActor private func resolveUnstoppableDomain(_ domain: String) async {
guard selectedSendToken != nil else {
// token is required for `unstoppableDomainsGetWalletAddr`
// else it returns `invalidParams` error immediately
return
}
self.resolvedAddress = nil
self.isResolvingAddress = true
defer { self.isResolvingAddress = false }
let token = selectedSendToken
let (address, status, _) = await rpcService.unstoppableDomainsGetWalletAddr(domain, token: token)
guard !Task.isCancelled else { return }
if status != .success || address.isEmpty {
addressError = .udError(domain: sendAddress)
return
}
guard domain == sendAddress, token == selectedSendToken, !Task.isCancelled else {
// address changed while resolving, or validation cancelled.
return
}
// store address for sending
resolvedAddress = address
addressError = nil
}
private func validateFilcoinSendAddress() {
addressError = sendAddress.isFILAddress ? nil : .notFilAddress
}
public func enableENSOffchainLookup() {
Task { @MainActor in
rpcService.setEnsOffchainLookupResolveMethod(.enabled)
self.isOffchainResolveRequired = false
await self.validateEthereumSendAddress(fromAddress: sendAddress)
}
}
@MainActor private func validateSolanaSendAddress(fromAddress: String) async {
let normalizedFromAddress = fromAddress.lowercased()
let normalizedToAddress = sendAddress.lowercased()
let isSupportedSNSExtension = sendAddress.endsWithSupportedSNSExtension
let isSupportedUDExtension = sendAddress.endsWithSupportedUDExtension
if isSupportedSNSExtension {
self.resolvedAddress = nil
self.isResolvingAddress = true
defer { self.isResolvingAddress = false }
let domain = sendAddress
let (address, status, _) = await rpcService.snsGetSolAddr(domain)
guard !Task.isCancelled else { return }
if status != .success || address.isEmpty {
addressError = .snsError(domain: sendAddress)
return
}
// If found address is the same as the selectedAccounts Wallet Address
if address.lowercased() == normalizedFromAddress {
addressError = .sameAsFromAddress
return
}
guard domain == sendAddress, !Task.isCancelled else {
// address changed while resolving, or validation cancelled.
return
}
// store address for sending
resolvedAddress = address
addressError = nil
} else if isSupportedUDExtension {
await resolveUnstoppableDomain(sendAddress)
} else { // not supported SNS extension, validate address
let isValid = await walletService.isBase58EncodedSolanaPubkey(sendAddress)
if !isValid {
addressError = .notSolAddress
} else if normalizedFromAddress == normalizedToAddress {
addressError = .sameAsFromAddress
} else {
addressError = nil
}
}
}
/// Validate `selectedSendTokenBalance` against the `sendAmount`
private func validateBalance() {
guard let selectedSendToken = self.selectedSendToken,
let balance = selectedSendTokenBalance,
case let sendAmount = (selectedSendToken.isErc721 || selectedSendToken.isNft) ? "1" : self.sendAmount,
let sendAmount = BDouble(sendAmount) else {
sendError = nil
return
}
sendError = balance < sendAmount ? .insufficientBalance : nil
}
func sendToken(
amount: String,
completion: @escaping (_ success: Bool, _ errMsg: String?) -> Void
) {
guard let token = self.selectedSendToken else {
completion(false, Strings.Wallet.internalErrorMessage)
return
}
let amount = (token.isErc721 || token.isNft) ? "1" : amount
keyringService.allAccounts { allAccounts in
guard let selectedAccount = allAccounts.selectedAccount else {
completion(false, Strings.Wallet.internalErrorMessage)
return
}
switch selectedAccount.coin {
case .eth:
self.sendTokenOnEth(amount: amount, token: token, from: selectedAccount.accountId, completion: completion)
case .sol:
self.sendTokenOnSol(amount: amount, token: token, from: selectedAccount.accountId, completion: completion)
case .fil:
self.sendTokenOnFil(amount: amount, token: token, from: selectedAccount.accountId, completion: completion)
default:
completion(false, Strings.Wallet.internalErrorMessage)
}
}
}
func sendTokenOnEth(
amount: String,
token: BraveWallet.BlockchainToken,
from fromAccountId: BraveWallet.AccountId,
completion: @escaping (_ success: Bool, _ errMsg: String?) -> Void
) {
let weiFormatter = WeiFormatter(decimalFormatStyle: .decimals(precision: 18))
guard let weiHexString = weiFormatter.weiString(from: amount.normalizedDecimals, radix: .hex, decimals: Int(token.decimals)) else {
completion(false, Strings.Wallet.internalErrorMessage)
return
}
let sendToAddress = resolvedAddress ?? sendAddress
isMakingTx = true
rpcService.network(.eth, origin: nil) { [weak self] network in
guard let self = self else { return }
if network.isNativeAsset(token) {
let baseData = BraveWallet.TxData(nonce: "", gasPrice: "", gasLimit: "", to: sendToAddress, value: "0x\(weiHexString)", data: .init(), signOnly: false, signedTransaction: nil)
if network.isEip1559 {
self.makeEIP1559Tx(chainId: network.chainId, baseData: baseData, from: fromAccountId) { success, errorMessage in
self.isMakingTx = false
completion(success, errorMessage)
}
} else {
let txDataUnion = BraveWallet.TxDataUnion(ethTxData: baseData)
self.txService.addUnapprovedTransaction(txDataUnion, chainId: network.chainId, from: fromAccountId) { success, txMetaId, errorMessage in
self.isMakingTx = false
completion(success, errorMessage)
}
}
} else if token.isErc721 {
self.ethTxManagerProxy.makeErc721Transfer(fromData: fromAccountId.address, to: sendToAddress, tokenId: token.tokenId, contractAddress: token.contractAddress) { success, data in
guard success else {
completion(false, nil)
return
}
let baseData = BraveWallet.TxData(nonce: "", gasPrice: "", gasLimit: "", to: token.contractAddress, value: "0x0", data: data, signOnly: false, signedTransaction: nil)
let txDataUnion = BraveWallet.TxDataUnion(ethTxData: baseData)
self.txService.addUnapprovedTransaction(txDataUnion, chainId: network.chainId, from: fromAccountId) { success, txMetaId, errorMessage in
self.isMakingTx = false
completion(success, errorMessage)
}
}
} else {
self.ethTxManagerProxy.makeErc20TransferData(sendToAddress, amount: "0x\(weiHexString)") { success, data in
guard success else {
completion(false, nil)
return
}
let baseData = BraveWallet.TxData(nonce: "", gasPrice: "", gasLimit: "", to: token.contractAddress, value: "0x0", data: data, signOnly: false, signedTransaction: nil)
if network.isEip1559 {
self.makeEIP1559Tx(chainId: network.chainId, baseData: baseData, from: fromAccountId) { success, errorMessage in
self.isMakingTx = false
completion(success, errorMessage)
}
} else {
let txDataUnion = BraveWallet.TxDataUnion(ethTxData: baseData)
self.txService.addUnapprovedTransaction(txDataUnion, chainId: network.chainId, from: fromAccountId) { success, txMetaId, errorMessage in
self.isMakingTx = false
completion(success, errorMessage)
}
}
}
}
}
}
private func sendTokenOnSol(
amount: String,
token: BraveWallet.BlockchainToken,
from fromAccountId: BraveWallet.AccountId,
completion: @escaping (_ success: Bool, _ errMsg: String?) -> Void
) {
guard let amount = WeiFormatter.decimalToAmount(amount.normalizedDecimals, tokenDecimals: Int(token.decimals)) else {
completion(false, Strings.Wallet.internalErrorMessage)
return
}
let sendToAddress = resolvedAddress ?? sendAddress
rpcService.network(.sol, origin: nil) { [weak self] network in
guard let self = self else { return }
if network.isNativeAsset(token) {
self.solTxManagerProxy.makeSystemProgramTransferTxData(
fromAccountId.address,
to: sendToAddress,
lamports: amount
) { solTxData, error, errMsg in
guard let solanaTxData = solTxData else {
completion(false, errMsg)
return
}
let txDataUnion = BraveWallet.TxDataUnion(solanaTxData: solanaTxData)
self.txService.addUnapprovedTransaction(txDataUnion, chainId: network.chainId, from: fromAccountId) { success, txMetaId, errMsg in
completion(success, errMsg)
}
}
} else {
self.solTxManagerProxy.makeTokenProgramTransferTxData(
network.chainId,
splTokenMintAddress: token.contractAddress,
fromWalletAddress: fromAccountId.address,
toWalletAddress: sendToAddress,
amount: amount
) { solTxData, error, errMsg in
guard let solanaTxData = solTxData else {
completion(false, errMsg)
return
}
let txDataUnion = BraveWallet.TxDataUnion(solanaTxData: solanaTxData)
self.txService.addUnapprovedTransaction(txDataUnion, chainId: network.chainId, from: fromAccountId) { success, txMetaId, errorMessage in
completion(success, errorMessage)
}
}
}
}
}
private func sendTokenOnFil(
amount: String,
token: BraveWallet.BlockchainToken,
from fromAccountId: BraveWallet.AccountId,
completion: @escaping (_ success: Bool, _ errMsg: String?) -> Void
) {
let weiFormatter = WeiFormatter(decimalFormatStyle: .decimals(precision: Int(token.decimals)))
guard let weiString = weiFormatter.weiString(from: amount.normalizedDecimals, decimals: Int(token.decimals)) else {
completion(false, Strings.Wallet.internalErrorMessage)
return
}
isMakingTx = true
rpcService.network(.fil, origin: nil) { [weak self] network in
guard let self = self else { return }
let filTxData = BraveWallet.FilTxData(
nonce: "",
gasPremium: "",
gasFeeCap: "",
gasLimit: "",
maxFee: "0",
to: sendAddress,
value: weiString
)
self.txService.addUnapprovedTransaction(BraveWallet.TxDataUnion(filTxData: filTxData), chainId: network.chainId, from: fromAccountId) { success, txMetaId, errorMessage in
self.isMakingTx = false
completion(success, errorMessage)
}
}
}
@MainActor func fetchNFTMetadata(tokens: [BraveWallet.BlockchainToken]) async -> [String: NFTMetadata] {
return await rpcService.fetchNFTMetadata(tokens: tokens, ipfsApi: ipfsApi)
}
}