problem when authorize then how to define provider in swifter.authorize method - authentication

Question

i am facing problem to give provider name because i dont know how to give proper provider in swifter.authorize
my controller is where i am using login code
you can check func actiontwitter in which i have used provider then please suggest me how to use provider as parameter
i have installed swifter package in project
//
// twitterVc.swift
// socialLogin
//
// Created by ios on 19/11/22.
//
import UIKit
import FirebaseAuth
import Swifter
import SafariServices
struct TwitterConstants {
static let CONSUMER_KEY = "MY_CONSUMER_KEY"
static let CONSUMER_SECRET_KEY = "MY_CONSUMER_SECRET_KEY"
static let CALLBACK_URL = "MY_CALLBACK_URL"
}
class twitterVc: UIViewController {
var swifter: Swifter!
var accToken: Credential.OAuthAccessToken?
#IBOutlet weak var submitBtn: UIButton!
var provider = OAuthProvider(providerID: "twitter.com")
override func viewDidLoad() {
super.viewDidLoad()
self.isLoggedIn { loggedin in
if loggedin {
// Show the ViewController with the logged in user
print("Logged In?: YES")
} else {
// Show the Home ViewController
print("Logged In?: NO")
}
}
}
func isLoggedIn(completion: #escaping (Bool) -> ()) {
let userDefaults = UserDefaults.standard
let accessToken = userDefaults.string(forKey: "oauth_token") ?? ""
let accessTokenSecret = userDefaults.string(forKey: "oauth_token_secret") ?? ""
let swifter = Swifter(consumerKey: TwitterConstants.CONSUMER_KEY, consumerSecret: TwitterConstants.CONSUMER_SECRET_KEY, oauthToken: accessToken, oauthTokenSecret: accessTokenSecret)
swifter.verifyAccountCredentials(includeEntities: false, skipStatus: false, includeEmail: true, success: { _ in
// Verify Succeed - Access Token is valid
completion(true)
}) { _ in
// Verify Failed - Access Token has expired
completion(false)
}
}
#IBAction func actionSubmit(_ sender: Any) {
self.actionTwitter()
}
func actionTwitter(){
//~~~~~~~~~~~~~~problem is here it is not taking provider as parameter
self.swifter.authorize(withProvider: provider as! ASWebAuthenticationPresentationContextProviding, callbackURL: URL(string: TwitterConstants.CALLBACK_URL)!) { (tokan: Credential.OAuthAccessToken?, resp: URLResponse) in
}
}
}
func failureHandler(){
}
extension twitterVc: SFSafariViewControllerDelegate{
func getUserProfile() {
self.swifter.verifyAccountCredentials(includeEntities: false, skipStatus: false, includeEmail: true, success: { json in
let userDefaults = UserDefaults.standard
userDefaults.set(self.accToken?.key, forKey: "oauth_token")
userDefaults.set(self.accToken?.secret, forKey: "oauth_token_secret")
// Twitter Id
if let twitterId = json["id_str"].string {
print("Twitter Id: \(twitterId)")
} else {
// self.twitterId = "Not exists"
}
// Twitter Handle
if let twitterHandle = json["screen_name"].string {
print("Twitter Handle: \(twitterHandle)")
} else {
// self.twitterHandle = "Not exists"
}
// Twitter Name
if let twitterName = json["name"].string {
print("Twitter Name: \(twitterName)")
} else {
// self.twitterName = "Not exists"
}
// Twitter Email
if let twitterEmail = json["email"].string {
print("Twitter Email: \(twitterEmail)")
} else {
// self.twitterEmail = "Not exists"
}
// Twitter Profile Pic URL
if let twitterProfilePic = json["profile_image_url_https"].string?.replacingOccurrences(of: "_normal", with: "", options: .literal, range: nil) {
print("Twitter Profile URL: \(twitterProfilePic)")
} else {
// self.twitterProfilePicURL = "Not exists"
}
print("Twitter Access Token: \(self.accToken?.key ?? "Not exists")")
}) { error in
print("ERROR: \(error.localizedDescription)")
}
}
}