//
// Copyright (c) 2025 Loverde Co.
//
// 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.

import Foundation
import LCEssentials
import LCECryptoKit

public final class LCECryptoKitManager {

    private let hashKey: String

    public init() {
        self.hashKey = ""
    }

    public init(privateKey: String) {
        self.hashKey = privateKey
    }

    public static func generateKey() -> String {
        LCECryptoKit.generateRandomAESKeyString()
    }

    public func encodeTP(email: String, password: String) -> String? {
        return LCECryptoKit.encodeSeed(email: email, password: password)
    }

    public func decodeOTP(_ otpHash: String) -> String? {
        return LCECryptoKit.decodeSeed(otpKey: otpHash)
    }

    // MARK: Need hashKey to decode

    public func encodeOTPWithKey(email: String, password: String) -> String? {
        return LCECryptoKit.encodeSeed(email: email, password: password, hashKey: self.hashKey)
    }

    public func decodeOTPWithKey(_ otpHash: String) -> Bool {
        LCECryptoKit.decodeSeed(otpKey: otpHash, hashKey: self.hashKey)
    }

    // MARK: - Salted/Iterated/Peppered Login (atomenta-cryptokit-pepper-refactor-sdd.md)

    public static func generateSalt() -> String {
        LCECryptoKit.generateSalt()
    }

    public static func computeClientHash(email: String, password: String, salt: String) -> String {
        LCECryptoKit.computeClientHash(email: email, password: password, salt: salt)
    }

    public static func computeLoginBearerToken(userId: String, clientHash: String) -> String? {
        LCECryptoKit.computeLoginBearerToken(userId: userId, clientHash: clientHash)
    }

    public static func otpEncode(_ plainText: String) -> String? {
        LCECryptoKit.otpEncode(plainText)
    }

    public static func otpDecode(_ otpEncoded: String) -> String? {
        LCECryptoKit.otpDecode(otpEncoded)
    }
}