77 lines
2.8 KiB
Swift
77 lines
2.8 KiB
Swift
//
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// Copyright (c) 2023 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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open class SingleValueExpirationStorage<Storage: SingleValueStorage>: SingleValueStorage
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where Storage.ErrorType == StorageError {
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public typealias ExpirationCheckClosure = (ValueType) -> Bool
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public let isExpiredCheckClosure: ExpirationCheckClosure
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public let wrappedStorage: Storage
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public init(wrappedStorage: Storage, isExpiredCheckClosure: @escaping ExpirationCheckClosure) {
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self.wrappedStorage = wrappedStorage
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self.isExpiredCheckClosure = isExpiredCheckClosure
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}
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open func hasStoredValue() -> Bool {
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guard wrappedStorage.hasStoredValue() else {
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return false
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}
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switch getValue() {
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case .success:
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return true
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case .failure:
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return false
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}
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}
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open func store(value: Storage.ValueType) -> Result<Void, Storage.ErrorType> {
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wrappedStorage.store(value: value)
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}
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open func getValue() -> Result<Storage.ValueType, Storage.ErrorType> {
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wrappedStorage.getValue()
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.flatMap {
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if isExpiredCheckClosure($0) {
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return .failure(.valueNotFound)
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} else {
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return .success($0)
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}
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}
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}
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open func deleteValue() -> Result<Void, Storage.ErrorType> {
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wrappedStorage.deleteValue()
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}
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}
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public extension SingleValueStorage where ErrorType == StorageError {
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typealias ExpirationStorage = SingleValueExpirationStorage<Self>
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func isExpireCheck(_ isExpiredCheck: @escaping ExpirationStorage.ExpirationCheckClosure) -> ExpirationStorage {
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ExpirationStorage(wrappedStorage: self, isExpiredCheckClosure: isExpiredCheck)
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}
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}
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