//
//  UserSessionStore.swift
//  PaiaiDataKit
//
//  Created by ffib on 2018/12/20.
//  Copyright © 2018 yb. All rights reserved.
//

import Foundation

fileprivate extension UserDefaults {
    struct Account: BoolUserDefaultable, DictionaryUserDefaultable {
        enum DictionaryDefaultKey: String {
            case userInfo
        }
        
        enum BoolDefaultKey: String {
            case isLogin
            case isAudit
        }
    }
}

final class UserSessionStore {
    #warning("是否加密存储userId")
    func save(_ userInfo: UserInfo) {
        UserDefaults.Account.set(true, forKey: .isLogin)
        UserDefaults.Account.set(userInfo.toJSON(), forKey: .userInfo)
    }
    
    func delete() {
        UserDefaults.Account.set([:], forKey: .userInfo)
        UserDefaults.Account.set(false, forKey: .isLogin)
    }
    
    func load() -> UserInfo {
        let json = UserDefaults.Account.dictionary(forKey: .userInfo)
        return UserInfo(json: json as [String: AnyObject])
    }
    
    func getUUID() -> String {
        let keyChainDic = NSMutableDictionary()
        keyChainDic.setObject(String(kSecClassGenericPassword), forKey: kSecClass as! NSCopying)
        keyChainDic.setObject("uuid", forKey: kSecAttrAccount as! NSCopying)
        keyChainDic.setObject(kCFBooleanTrue, forKey: kSecReturnAttributes as! NSCopying)
        keyChainDic.setObject(kCFBooleanTrue, forKey: kSecReturnData as! NSCopying)

        var result: AnyObject?
        var uuid: String? = nil
        SecItemCopyMatching(keyChainDic, &result)
        if let resultDic = result as? NSDictionary {
            if let data = resultDic.object(forKey: kSecValueData) as? Data {
                uuid = NSString(data: data, encoding: String.Encoding.ascii.rawValue) as String?
            }
        }
        
        if let uuid = uuid { return uuid }
        let uuidStr = UUID().uuidString
        let data = uuidStr.data(using: .ascii)
        keyChainDic.setObject(data!, forKey: kSecValueData as! NSCopying)
        SecItemAdd(keyChainDic, nil)
        return uuidStr
    }
}