Facebook Login in swift 3.0

FacebookLogin.swift

func FbLoginButton() {
	
        if (FBSDKAccessToken.current() != nil)
        {
            // User is logged in, do work such as go to next view controller.
            print("already login")
            self.getFBUserData()
            
        }else{
           
            let fbLoginManager : FBSDKLoginManager = FBSDKLoginManager()
            
            fbLoginManager.logIn(withReadPermissions: ["email"], from: self) { (result, error) in
                if (error == nil){
                    let fbloginresult : FBSDKLoginManagerLoginResult = result!
                    if fbloginresult.grantedPermissions != nil {
                        if(fbloginresult.grantedPermissions.contains("email"))
                        {
                            print("fb result data::\(result)")
                            self.getFBUserData()
                            //fbLoginManager.logOut()
                        }
                    }
                }
            }
        }
        
    }
    
    func getFBUserData()
    {
        print("getFBUserData already login")
        
        if((FBSDKAccessToken.current()) != nil)
        {
            
            print("getFBUserData ")
            
            FBSDKGraphRequest(graphPath: "/me", parameters: ["fields": "id, name, picture.type(large), email"]).start(completionHandler: { (connection, result, error) -> Void in
                if (error == nil)
                {
                    print("\(result)")
                    
                    
                    
                    var name = ""
                    var email = ""
                    var id = ""
                    
                    if let dic =  result as? NSDictionary{
                        
                        if let email1 = dic.value(forKey: "email") as? String{
                            print("email is ::\(email)")
                            email = email1
                            
                        }
                        if let name1 = dic.value(forKey: "name") as? String{
                            print("name is::\(name)")
                            name = name1
                            
                        }
                        if let id1 = dic.value(forKey: "id") as? String{
                            print("id  is::\(id)")
                            id = id1
                            
                            
                        }
                        if let picture = dic.value(forKey: "picture") as? NSDictionary{
                            
                            if let data = picture.value(forKey: "data") as? NSDictionary{
                                
                                if let url = data.value(forKey: "url") as? String{
                                    print("url is \(url)")
                                    self.sendFbData(id: id, name: name, email: email, user_image: url)
                                    
                                }
                                
                            }
                            
                        }
                    }
                    
                }
            })
            
        }else{
            print("fb already login")
        }
        
        
    }
    
    func sendFbData(id:String , name:String ,email:String,user_image:String){
        
        
        let prs = [
            "id" : id,
            "login_type" : "2" as String,
            "name" : name,
            "mobile" : "",
            "email" : email,
            "user_image" : user_image,
            "house_number": "",
            "locality" : "",
            "city" : "",
            "pincode" : ""
            ] as [String:String]
        
        Service.Start(VC: self,dic: prs, url: "\(GlobalVariable.serverName)user_insert.php", onCompletion: { result in
            DispatchQueue.main.async(execute: {
                
                if let dic =  result as? NSDictionary{
                

                    if let city = dic.value(forKey: "city") as? String{
                        print("city:\(city)")
                     UserDefaults.standard.setValue(city, forKey: "city")
                        
                    }
                    if let house_number = dic.value(forKey: "house_number") as? String{
                        print("house_number:\(house_number)")
                          UserDefaults.standard.setValue(house_number, forKey: "house_number")
                    }
                    if let id = dic.value(forKey: "id") as? String{
                        print("id\(id)")
                        UserDefaults.standard.setValue(id, forKey: "id")
                    }
                    if let locality = dic.value(forKey: "locality") as? String{
                        print("locality\(locality)")
                        UserDefaults.standard.setValue(locality, forKey: "locality")
                    }
                    if let login_type = dic.value(forKey: "login_type") as? String{
                        print("login type\(login_type)")
                    }
                    if let mobile = dic.value(forKey: "mobile") as? String{
                        print("mobile\(mobile)")
                         UserDefaults.standard.setValue(mobile, forKey: "mobile")
                    }
                    if let pincode = dic.value(forKey: "pincode") as? String{
                        print("pincode\(pincode)")
                         UserDefaults.standard.setValue(pincode, forKey: "pincode")
                    }
                    if let user_image = dic.value(forKey: "user_image") as? String{
                        print("user_image\(user_image)")
                        UserDefaults.standard.setValue(user_image, forKey: "user_image")
                    }
                    if let useremail = dic.value(forKey: "useremail") as? String{
                        print("useremail\(useremail)")
                        UserDefaults.standard.setValue(useremail, forKey: "email")
                    }
                    if let username = dic.value(forKey: "username") as? String{
                        print("username\(username)")
                         UserDefaults.standard.setValue(name, forKey: "name")
                    }
                    CurrentUser.getData()
                    
                }
            })
        })
    }