LONDON-IOS/GME Remit/Utilities/WebLinks/WebLinksViewController.swift

//
//  WebLinksViewController.swift
//
//
//  Created by shishir sapkota
//

import Foundation
import UIKit
import Alamofire
import WebKit

class WebLinksViewController: UIViewController, WKUIDelegate {
  
  // MARK: Properties
  
  // MARK: Outlets
  
  var navTitle: String = ""
  var url: String?
  var titleString: String = ""
  // MARK: VC's Life cycle
  
  var webView: WKWebView?
  var activityIndicator: UIActivityIndicatorView?
  
  override func viewDidLoad() {
    super.viewDidLoad()
    let barButton = UIBarButtonItem.init(
      title: "penny_test_close_text".localized(),
      style: UIBarButtonItem.Style.plain,
      target: self,
      action: #selector(self.cancel)
    )
    
    self.navigationItem.rightBarButtonItem = barButton
    webView = WKWebView(frame: self.view.frame)
    setupWebView()
    activityIndicator = UIActivityIndicatorView(style: UIActivityIndicatorView.Style.gray)
    activityIndicator?.center = self.view.center
    self.view.addSubview(webView!)
    self.view.addSubview(activityIndicator!)
  }
  
  private func setupWebView() {
    self.webView?.uiDelegate = self
    webView?.navigationDelegate = self
  }
  
  // MARK: IBActions
  
  override func viewWillAppear(_ animated: Bool) {
    self.navigationItem.title = titleString
    self.openURLInWebView()
  }
  
  @objc func cancel() {
    self.dismiss(animated: true, completion: nil)
  }
  
  func openURLInWebView() {
    if NetworkReachabilityManager()?.isReachable == true {
      if let url = URL.init(string: self.url ?? "") {
        let request = URLRequest(url: url)
        
        webView?.load(request)
      }
    } else {
      self.alert(type: .error, message: "no_internet_connection_error".localized(), title: "")
    }
  }
}

// MARK: WKNavigationDelegate
extension WebLinksViewController: WKNavigationDelegate {
  func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
    self.activityIndicator?.startAnimating()
  }
  
  func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
    self.activityIndicator?.stopAnimating()
  }
  func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
    self.activityIndicator?.stopAnimating()
    self.alert(type: .error, message: error.localizedDescription)
  }
}