85 lines
3.2 KiB
Swift
85 lines
3.2 KiB
Swift
//
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// Copyright (c) 2022 Touch Instinct
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the Software), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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import TIFoundationUtils
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import KeychainAccess
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import Foundation
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open class SingleValueAuthKeychainStorage<ValueType>: SingleValueStorage {
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open class Defaults {
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public static var keychainServiceIdentifier: String {
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Bundle.main.bundleIdentifier ?? "ru.touchin.TIAuth"
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}
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}
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public typealias GetValueClosure = (Keychain, String) -> Result<ValueType, StorageError>
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public typealias SetValueClosure = (Keychain, ValueType, String) -> Result<Void, StorageError>
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public let keychain: Keychain
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public let settingsStorage: AuthSettingsStorage
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public let storageKey: String
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public let getValueClosure: GetValueClosure
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public let setValueClosure: SetValueClosure
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public init(keychain: Keychain = Keychain(service: Defaults.keychainServiceIdentifier),
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settingsStorage: AuthSettingsStorage = DefaultAuthSettingsStorage(),
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storageKey: String,
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getValueClosure: @escaping GetValueClosure,
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setValueClosure: @escaping SetValueClosure) {
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self.keychain = keychain
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self.settingsStorage = settingsStorage
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self.storageKey = storageKey
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self.getValueClosure = getValueClosure
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self.setValueClosure = setValueClosure
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}
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// MARK: - SingleValueStorage
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open func hasStoredValue() -> Bool {
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!settingsStorage.shouldResetStoredAuthData && ((try? keychain.contains(storageKey)) ?? false)
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}
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open func store(value: ValueType) -> Result<Void, StorageError> {
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return setValueClosure(keychain, value, storageKey)
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}
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open func getValue() -> Result<ValueType, StorageError> {
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guard !settingsStorage.shouldResetStoredAuthData else {
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let result: Result<ValueType, StorageError>
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do {
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try keychain.remove(storageKey)
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settingsStorage.shouldResetStoredAuthData = false
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result = .failure(.valueNotFound)
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} catch {
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result = .failure(.unableToWriteData(underlyingError: error))
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}
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return result
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}
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return getValueClosure(keychain, storageKey)
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}
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}
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