//
//  LoginView.swift
//  Weibo
//
//  Created by Qihua Pan on 2020/8/17.
//  Copyright © 2020 Qihua Pan. All rights reserved.
//

import SwiftUI
import CoreData
import SwiftyJSON
import Alamofire
struct UserProfile {
    var name:String?
}

struct LoginView: View {
    
    @Environment(\.managedObjectContext) var contenxt:NSManagedObjectContext
    
    @EnvironmentObject var user:User
    
    @State var userInfo=UserProfile()
    
    let queue=OperationQueue()

    
    func login() {
        let request=WBAuthorizeRequest()
        request.redirectURI="https://api.weibo.com/oauth2/default.html"
        WeiboSDK.send(request)
    }
    
    func loadUserInfo(){
        print("toekn=\(self.user.access_token),date=\(self.user.expiration_Date)")

        AF.request("https://api.weibo.com/2/users/show.json",parameters: ["access_token":self.user.access_token,"uid":self.user.uid]).responseJSON { response in
            if let data=response.data,let json = try? JSON(data: data){
                print(json)
             }else{
                 print("loadUserInfo error")
             }
        }
        

    }
    
    var body: some View {
        VStack {
            if self.user.access_token==nil{
                Text("正在跳转到授权页面").onAppear(perform: {
                    self.login()
                })
            }
            else if self.user.expiration_Date<Date().timeIntervalSince1970{
                Text("正在跳转到授权页面").onAppear(perform: {
                    self.login()
                })
            }
            else if self.userInfo.name==nil{
                Text("正在获取用户信息").onAppear(perform: {
                    self.loadUserInfo()
                })
            }else{
                Text("username=\(self.userInfo.name!)")
            }
            
        }
    }
}


struct LoginView_Previews: PreviewProvider {

    static var previews: some View {
        LoginView().environment(\.managedObjectContext, UserData.getContext()).environmentObject(UserData.getUser())
    }
}