//
//  MastodonPinBasedAuthenticationViewModelNavigationDelegateShim.swift
//  Mastodon
//
//  Created by Cirno MainasuK on 2021/1/29.
//

import os.log
import Foundation
import WebKit

final class MastodonPinBasedAuthenticationViewModelNavigationDelegateShim: NSObject {
    
    weak var viewModel: MastodonPinBasedAuthenticationViewModel?
    
    init(viewModel: MastodonPinBasedAuthenticationViewModel) {
        self.viewModel = viewModel
    }
    
    deinit {
        os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
    }
}


// MARK: - WKNavigationDelegate
extension MastodonPinBasedAuthenticationViewModelNavigationDelegateShim: WKNavigationDelegate {
    
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        guard let url = webView.url,
              let components = URLComponents(url: url, resolvingAgainstBaseURL: false),
              let codeQueryItem = components.queryItems?.first(where: { $0.name == "code" }),
              let code = codeQueryItem.value else {
            return
        }
        
        viewModel?.pinCodePublisher.send(code)
    }
    
}