LoginUser.swift

//
//  User.swift
//  WaterLand
//
//  Created by fujiwara on 2016/12/15.
//  Copyright © 2016年 fujiwara. All rights reserved.
//

import UIKit
import KeychainAccess

class LoginUser: NSCoder {
    static let sharedInstance = LoginUser()
    
    let keychain = Keychain()
    enum LoginUserState {
        case loggedIn, loggedOut, noneUser
    }
    
    var userState: LoginUserState = .noneUser
    
    var name: String = ""
    var email: String = ""
    var password: String = ""
    var rePassword: String = ""
    var token: String = ""
    
    fileprivate override init() {
        super.init()
    }
    
    func encodeWithCoder(_ aCoder: NSCoder) {
        aCoder.encode(self.email, forKey: "email")
        aCoder.encode(self.name, forKey: "name")
        aCoder.encode(self.password, forKey: "password")
        aCoder.encode(self.rePassword, forKey: "rePassword")
        aCoder.encode(self.token, forKey: "token")
    }
    
    required init(coder aDecoder: NSCoder) {
        super.init()
        if keychain[AppConst.tokenKey] != nil {
            self.userState = .loggedIn
        } else {
            self.userState = .loggedOut
        }
        
        self.name = aDecoder.decodeObject(forKey: "name") as! String
        self.email = aDecoder.decodeObject(forKey: "email") as! String
        self.password = aDecoder.decodeObject(forKey: "password") as! String
        self.rePassword = aDecoder.decodeObject(forKey: "rePassword") as! String
        self.token = aDecoder.decodeObject(forKey: "token") as! String
    }
    
    final func logout() {
        resetUser()
        keychain[AppConst.tokenKey] = nil
        userState = .loggedOut
    }
    
    final func getAccessToken() -> String? {
        return keychain[AppConst.tokenKey]
    }
    
    final func setAccessToken(_ accessToken: String) {
        do {
            try keychain.set(accessToken, key: AppConst.tokenKey)
        }
        catch let error {
            print(error)
            userState = .loggedOut
            return
        }
        userState = .loggedIn
    }
    
    
    func resetUser() {
        name = ""
        email = ""
        password = ""
        rePassword = ""
        userState = .loggedOut
    }
}