96 lines
3.6 KiB
Swift
96 lines
3.6 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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var rustBackend: ZcashRustBackendWelding.Type
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var repository: TransactionRepository
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// var initializer: Initializer
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var queue: DispatchQueue
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private var outputParamsURL: URL
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private var spendParamsURL: URL
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private var dataDbURL: URL
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init(rust: ZcashRustBackendWelding.Type,
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dataDb: URL,
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repository: TransactionRepository,
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outputParams: URL,
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spendParams: URL) {
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self.rustBackend = rust
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self.dataDbURL = dataDb
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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.queue = DispatchQueue(label: "wallet.transaction.encoder.serial.queue")
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}
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convenience init(initializer: Initializer) {
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self.init(rust: initializer.rustBackend,
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dataDb: initializer.dataDbURL,
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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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}
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func createTransaction(spendingKey: String, zatoshi: Int, to: String, memo: String?, from accountIndex: Int) throws -> EncodedTransaction {
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let txId = try createSpend(spendingKey: spendingKey, zatoshi: zatoshi, to: to, memo: memo, from: accountIndex)
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do {
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let transaction = try repository.findBy(id: txId)
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guard let tx = transaction else {
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throw TransactionEncoderError.notFound(transactionId: txId)
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}
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LoggerProxy.debug("sentTransaction id: \(txId)")
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return EncodedTransaction(transactionId: tx.transactionId , raw: tx.raw)
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} catch {
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throw TransactionEncoderError.notFound(transactionId: txId)
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}
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}
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func createTransaction(spendingKey: String, zatoshi: Int, to: String, memo: String?, from accountIndex: Int, result: @escaping TransactionEncoderResultBlock) {
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queue.async { [weak self] in
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guard let self = self else { return }
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do {
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result(.success(try self.createTransaction(spendingKey: spendingKey, zatoshi: zatoshi, to: to, memo: memo, from: accountIndex)))
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} catch {
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result(.failure(error))
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}
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}
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}
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func createSpend(spendingKey: String, zatoshi: Int, to address: String, memo: String?, from accountIndex: Int) throws -> Int {
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guard ensureParams(spend: self.spendParamsURL, output: self.spendParamsURL) else {
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throw TransactionEncoderError.missingParams
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}
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let txId = rustBackend.createToAddress(dbData: self.dataDbURL, account: Int32(accountIndex), extsk: spendingKey, to: address, value: Int64(zatoshi), memo: memo, spendParamsPath: self.spendParamsURL.path, outputParamsPath: self.outputParamsURL.path)
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guard txId > 0 else {
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throw rustBackend.lastError() ?? RustWeldingError.genericError(message: "create spend failed")
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}
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return Int(txId)
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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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return readableSpend && readableOutput // Todo: change this to something that makes sense
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}
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}
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