137 lines
4.2 KiB
Swift
137 lines
4.2 KiB
Swift
//
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// WalletTransactionEncoder.swift
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// ZcashLightClientKit
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//
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// Created by Francisco Gindre on 11/20/19.
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//
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import Foundation
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class WalletTransactionEncoder: TransactionEncoder {
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let lightWalletService: LightWalletService
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let rustBackend: ZcashRustBackendWelding
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let repository: TransactionRepository
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let logger: Logger
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private let outputParamsURL: URL
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private let spendParamsURL: URL
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private let dataDbURL: URL
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private let fsBlockDbRoot: URL
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private let networkType: NetworkType
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init(
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rustBackend: ZcashRustBackendWelding,
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dataDb: URL,
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fsBlockDbRoot: URL,
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service: LightWalletService,
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repository: TransactionRepository,
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outputParams: URL,
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spendParams: URL,
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networkType: NetworkType,
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logger: Logger
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) {
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self.rustBackend = rustBackend
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self.dataDbURL = dataDb
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self.fsBlockDbRoot = fsBlockDbRoot
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self.lightWalletService = service
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self.repository = repository
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self.outputParamsURL = outputParams
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self.spendParamsURL = spendParams
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self.networkType = networkType
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self.logger = logger
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}
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convenience init(initializer: Initializer) {
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self.init(
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rustBackend: initializer.rustBackend,
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dataDb: initializer.dataDbURL,
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fsBlockDbRoot: initializer.fsBlockDbRoot,
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service: initializer.lightWalletService,
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repository: initializer.transactionRepository,
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outputParams: initializer.outputParamsURL,
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spendParams: initializer.spendParamsURL,
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networkType: initializer.network.networkType,
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logger: initializer.logger
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)
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}
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func proposeTransfer(
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accountIndex: Int,
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recipient: String,
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amount: Zatoshi,
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memoBytes: MemoBytes?
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) async throws -> Proposal {
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let proposal = try await rustBackend.proposeTransfer(
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account: Int32(accountIndex),
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to: recipient,
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value: amount.amount,
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memo: memoBytes
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)
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return Proposal(inner: proposal)
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}
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func proposeShielding(
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accountIndex: Int,
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shieldingThreshold: Zatoshi,
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memoBytes: MemoBytes?
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) async throws -> Proposal {
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let proposal = try await rustBackend.proposeShielding(
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account: Int32(accountIndex),
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memo: memoBytes,
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shieldingThreshold: shieldingThreshold
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)
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return Proposal(inner: proposal)
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}
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func createProposedTransactions(
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proposal: Proposal,
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spendingKey: UnifiedSpendingKey
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) async throws -> [ZcashTransaction.Overview] {
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guard ensureParams(spend: self.spendParamsURL, output: self.outputParamsURL) else {
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throw ZcashError.walletTransEncoderCreateTransactionMissingSaplingParams
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}
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let txId = try await rustBackend.createProposedTransaction(
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proposal: proposal.inner,
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usk: spendingKey
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)
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logger.debug("transaction id: \(txId)")
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return [try await repository.find(rawID: txId)]
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}
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func submit(
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transaction: EncodedTransaction
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) async throws {
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let response = try await self.lightWalletService.submit(spendTransaction: transaction.raw)
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guard response.errorCode >= 0 else {
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throw TransactionEncoderError.submitError(code: Int(response.errorCode), message: response.errorMessage)
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}
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}
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func ensureParams(spend: URL, output: URL) -> Bool {
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let readableSpend = FileManager.default.isReadableFile(atPath: spend.path)
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let readableOutput = FileManager.default.isReadableFile(atPath: output.path)
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// TODO: [#713] change this to something that makes sense, https://github.com/zcash/ZcashLightClientKit/issues/713
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return readableSpend && readableOutput
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}
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func closeDBConnection() {
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self.repository.closeDBConnection()
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}
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}
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extension ZcashTransaction.Overview {
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func encodedTransaction() throws -> EncodedTransaction {
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guard let raw else {
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throw TransactionEncoderError.notEncoded(txId: self.rawID)
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}
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return EncodedTransaction(transactionId: self.rawID, raw: raw)
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}
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}
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