//
//  IDUtil.swift
//  武极天下
//
//  Created by zhl on 2020/6/17.
//  Copyright © 2020 egret. All rights reserved.
//

import UIKit
public class IDUtil: NSObject{
    static let serviceName = "Wjtx"
    static let accessGroup: String? = nil
    static let accountName = "wjtx_uid"
    
    public static func getUid() -> String {
        let id = getSavedUid()
        if (id != "") {
            return id
        }
        let strIDFV = UIDevice.current.identifierForVendor!.uuidString.lowercased();
        saveUid(uid: strIDFV)
        return strIDFV;
    }
    
    static func saveUid(uid: String) {
        do {
            let passwordItem = KeychainPasswordItem(service: serviceName, account: accountName, accessGroup: accessGroup)
            try passwordItem.savePassword(uid)
        } catch {
            print("Error updating keychain - \(error)")
        }
    }
    
    static func getSavedUid() -> String {
        do {
            let passwordItem = KeychainPasswordItem(service: serviceName, account: accountName, accessGroup: accessGroup)
            let password = try passwordItem.readPassword()
            return password
        } catch {
            print("Error reading password from keychain - \(error)")
            return ""
        }
        
    }
    
}