//
//  LoginInteractor.swift
//  GMERemittance
//
//  Created by gme_2 on 07/09/2018.
//Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import Foundation

class LoginInteractor {
  
  // MARK: Properties
  
  weak var output: LoginInteractorOutput?
  private let service: LoginServiceType
  
  // MARK: Initialization
  
  init(service: LoginServiceType) {
    self.service = service
  }
  
  func toBase64(text: String) -> String? {
    guard let data = text.data(using: String.Encoding.utf8) else {
      return nil
    }
    
    return data.base64EncodedString(options: Data.Base64EncodingOptions(rawValue: 0))
  }
  
  // MARK: Converting entities
}

// MARK: Login interactor input interface

extension LoginInteractor: LoginInteractorInput {
  
  func login(userName: String, encryptedPassword: String) {
    // send encrypted password to server for kftc
    self.service.accessCode(
      userId: userName,
      password: encryptedPassword,
      success: { (user) in
        let accessCode = user?.accessCode ?? ""
        let accessCodeBase64 = accessCode
        Utility.save(user: user, accessCodeBase64: accessCodeBase64, password: encryptedPassword, login: true)
        
        self.output?.loggedIn()
        
      },
      failure: { (error) in
        self.output?.show(error: error)
        guard
          let storedEmail = KeyChain.shared.get(key: .id),
          storedEmail == userName else {
            return
        }
        
        KeyChain.shared.removeAll()
      }
    )
  }
}