//
//  Copyright (c) 2023 Touch Instinct
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the Software), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  THE SOFTWARE.
//

open class SingleValueExpirationStorage<Storage: SingleValueStorage>: SingleValueStorage
where Storage.ErrorType == StorageError {

    public typealias ExpirationCheckClosure = (ValueType) -> Bool

    public let isExpiredCheckClosure: ExpirationCheckClosure
    public let wrappedStorage: Storage

    public init(wrappedStorage: Storage, isExpiredCheckClosure: @escaping ExpirationCheckClosure) {
        self.wrappedStorage = wrappedStorage
        self.isExpiredCheckClosure = isExpiredCheckClosure
    }

    open func hasStoredValue() -> Bool {
        guard wrappedStorage.hasStoredValue() else {
            return false
        }

        switch getValue() {
        case .success:
            return true

        case .failure:
            return false
        }
    }

    open func store(value: Storage.ValueType) -> Result<Void, Storage.ErrorType> {
        wrappedStorage.store(value: value)
    }

    open func getValue() -> Result<Storage.ValueType, Storage.ErrorType> {
        wrappedStorage.getValue()
            .flatMap {
                if isExpiredCheckClosure($0) {
                    return .failure(.valueNotFound)
                } else {
                    return .success($0)
                }
            }
    }

    open func deleteValue() -> Result<Void, Storage.ErrorType> {
        wrappedStorage.deleteValue()
    }
}

public extension SingleValueStorage where ErrorType == StorageError {
    typealias ExpirationStorage = SingleValueExpirationStorage<Self>

    func isExpireCheck(_ isExpiredCheck: @escaping ExpirationStorage.ExpirationCheckClosure) -> ExpirationStorage {
        ExpirationStorage(wrappedStorage: self, isExpiredCheckClosure: isExpiredCheck)
    }
}