181 lines
4.9 KiB
Swift
181 lines
4.9 KiB
Swift
//
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// AccountEntity.swift
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// ZcashLightClientKit
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//
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// Created by Francisco Gindre on 11/14/19.
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//
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import Foundation
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protocol AccountEntity {
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var account: Int { get set }
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var ufvk: String { get set }
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var address: String { get set }
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var transparentAddress: String { get set }
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}
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struct Account: AccountEntity, Encodable, Decodable {
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enum CodingKeys: String, CodingKey {
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case account
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case ufvk
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case address
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case transparentAddress = "transparent_address"
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}
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var account: Int
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var ufvk: String
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var address: String
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var transparentAddress: String
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}
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extension Account: Hashable {
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func hash(into hasher: inout Hasher) {
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hasher.combine(account)
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hasher.combine(ufvk)
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hasher.combine(address)
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hasher.combine(transparentAddress)
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}
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static func == (lhs: Self, rhs: Self) -> Bool {
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guard
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lhs.account == rhs.account,
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lhs.ufvk == rhs.ufvk,
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lhs.address == rhs.address,
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lhs.transparentAddress == rhs.transparentAddress
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else { return false }
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return true
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}
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}
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protocol AccountRepository {
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func getAll() throws -> [AccountEntity]
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func findBy(account: Int) throws -> AccountEntity?
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func findBy(address: String) throws -> AccountEntity?
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func update(_ account: AccountEntity) throws
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}
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import SQLite
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class AccountSQDAO: AccountRepository {
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enum TableColums {
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static let account = Expression<Int>("account")
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static let extfvk = Expression<String>("extfvk")
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static let address = Expression<String>("address")
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static let transparentAddress = Expression<String>("transparent_address")
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}
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let table = Table("accounts")
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var dbProvider: ConnectionProvider
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init (dbProvider: ConnectionProvider) {
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self.dbProvider = dbProvider
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}
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func getAll() throws -> [AccountEntity] {
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let allAccounts: [Account] = try dbProvider.connection().prepare(table).map({ row in
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try row.decode()
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})
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return allAccounts
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}
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func findBy(account: Int) throws -> AccountEntity? {
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let query = table.filter(TableColums.account == account).limit(1)
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return try dbProvider.connection().prepare(query).map({ try $0.decode() as Account }).first
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}
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func findBy(address: String) throws -> AccountEntity? {
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let query = table.filter(TableColums.address == address).limit(1)
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return try dbProvider.connection().prepare(query).map({ try $0.decode() as Account }).first
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}
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func update(_ account: AccountEntity) throws {
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guard let acc = account as? Account else {
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throw StorageError.updateFailed
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}
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let updatedRows = try dbProvider.connection().run(table.filter(TableColums.account == acc.account).update(acc))
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if updatedRows == 0 {
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LoggerProxy.error("attempted to update pending transactions but no rows were updated")
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throw StorageError.updateFailed
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}
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}
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}
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class CachingAccountDao: AccountRepository {
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var dao: AccountRepository
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lazy var cache: [Int: AccountEntity] = {
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var accountCache: [Int: AccountEntity] = [:]
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guard let all = try? dao.getAll() else {
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return accountCache
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}
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for acc in all {
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accountCache[acc.account] = acc
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}
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return accountCache
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}()
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init(dao: AccountRepository) {
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self.dao = dao
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}
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func getAll() throws -> [AccountEntity] {
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guard cache.isEmpty else {
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return cache.values.sorted(by: { $0.account < $1.account })
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}
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let all = try dao.getAll()
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for acc in all {
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cache[acc.account] = acc
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}
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return all
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}
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func findBy(account: Int) throws -> AccountEntity? {
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if let acc = cache[account] {
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return acc
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}
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let acc = try dao.findBy(account: account)
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cache[account] = acc
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return acc
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}
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func findBy(address: String) throws -> AccountEntity? {
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if !cache.isEmpty, let account = cache.values.first(where: { $0.address == address }) {
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return account
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}
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guard let account = try dao.findBy(address: address) else {
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return nil
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}
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cache[account.account] = account
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return account
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}
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func update(_ account: AccountEntity) throws {
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try dao.update(account)
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}
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}
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enum AccountRepositoryBuilder {
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static func build(dataDbURL: URL, readOnly: Bool = false, caching: Bool = false) -> AccountRepository {
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if caching {
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return CachingAccountDao(dao: AccountSQDAO(dbProvider: SimpleConnectionProvider(path: dataDbURL.path, readonly: readOnly)))
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} else {
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return AccountSQDAO(dbProvider: SimpleConnectionProvider(path: dataDbURL.path, readonly: readOnly))
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}
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}
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}
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