//
//  NetworkIndicator.swift
//  Learn Genie
//
//  Created by Suraj Kumar Mandal on 31/08/21.
//

import Foundation
import UIKit

open class NetworkIndicator {
    var containerView = UIView()
    var progressView = UIView()
    var activityIndicator = UIActivityIndicatorView()
    
    open class  var networkIndicator:NetworkIndicator{
        struct Static{
            static let progressBar:NetworkIndicator  = NetworkIndicator()
        }
        return Static.progressBar
    }
    open func showProgressView(_ view: UIView){
        DispatchQueue.main.async {
            self.containerView.frame = view.frame
            self.containerView.center = view.center
            self.containerView.backgroundColor = UIColor.clear
            
            self.progressView.frame = CGRect(x: 0, y: 0, width: 80, height: 80)
            self.progressView.center = view.center
            self.progressView.backgroundColor = UIColor(hex: 0x444444, alpha: 0.7)
            self.progressView.clipsToBounds = true
            self.progressView.layer.cornerRadius = 10
            
            self.activityIndicator.frame = CGRect(x: 0, y: 0, width: 40, height: 40)
            self.activityIndicator.style = .large
            self.activityIndicator.center = CGPoint(x: self.progressView.bounds.width / 2, y: self.progressView.bounds.height / 2)
            
            DispatchQueue.main.async {
                self.progressView.addSubview(self.activityIndicator)
                self.containerView.addSubview(self.progressView)
                view.addSubview(self.containerView)
                view.bringSubviewToFront(self.containerView)
                self.activityIndicator.startAnimating()
            }
        }
    }
    open func hideProgressView(){
        DispatchQueue.main.async {
            self.activityIndicator.stopAnimating()
            self.containerView.removeFromSuperview()
        }
    }
    
}

extension UIColor {
    convenience init(hex: UInt32, alpha: CGFloat) {
        let red = CGFloat((hex & 0xFF0000) >> 16)/256.0
        let green = CGFloat((hex & 0xFF00) >> 8)/256.0
        let blue = CGFloat(hex & 0xFF)/256.0
        self.init(red: red, green: green, blue: blue, alpha: alpha)
    }
}