Proyectos de Subversion Iphone Microlearning - Nuevo Interface

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//
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//  ImageLoader.swift
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//  twogetskills
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//
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//  Created by Efrain Yanez Recanatini on 3/9/22.
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//
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import Combine
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import UIKit
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import SwiftUI
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class ImageLoader: ObservableObject {
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    @Published var image: UIImage?
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    private(set) var isLoading = false
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    private let url: URL
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    private var imageCache: ImageCache?
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    //private var imageCache: ImageCache
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    private var appData = Environment(\.appData).wrappedValue
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    private let key : String
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    /*
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    init(url: URL) {
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        self.url = url
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        self.imageCache = ImageCache.sharedInstance
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        let urlString : String = url.absoluteString
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        let arrayFullFilename = urlString.split(separator: "/")
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        self.key  = String(arrayFullFilename[arrayFullFilename.count - 1])
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    }*/
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    init(url: URL, cache: ImageCache? = nil) {
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        self.url = url
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        self.imageCache = cache
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        let urlString : String = url.absoluteString
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        let arrayFullFilename = urlString.split(separator: "/")
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        self.key  = String(arrayFullFilename[arrayFullFilename.count - 1])
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    }
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    func load() {
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        print("ImageLoaderkey: \(key)")
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        if imageCache!.cache.hasData(forKey: key) {
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            do {
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                self.image = try imageCache!.cache.readImageForKey(key: key)
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                return
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            } catch  {
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                print("Error cargando la imagen  desde el cache")
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            }
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        }
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        print("Cargando la imagen desde el URL")
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        /*
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        if let image = cache?[key as NSString] {
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            print("ImageLoader from cache key: \(key)")
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            self.image = image
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            return
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        }*/
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        var request = URLRequest(url: url)
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        let headerSecurity = HeaderSecurity()
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        request.httpMethod = "GET"
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        request.addValue(appData.deviceUuid, forHTTPHeaderField: Constants.HTTP_HEADER_SECURITY_TOKEN)
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        request.addValue(headerSecurity.secret, forHTTPHeaderField: Constants.HTTP_HEADER_SECURITY_SECRET)
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        request.addValue(String(headerSecurity.created), forHTTPHeaderField: Constants.HTTP_HEADER_SECURITY_CREATED)
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        request.addValue(String(headerSecurity.rand), forHTTPHeaderField: Constants.HTTP_HEADER_SECURITY_RAND)
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        let task = URLSession.shared.dataTask(with: request, completionHandler: setImageFromData)
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        task.resume()
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    }
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    private func setImageFromData(data: Data?, urlResponse: URLResponse?, error: Error?) {
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            guard error == nil else {
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               // print("\(error!)")
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                return
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            }
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            guard let content = data else {
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               // print("No data")
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                return
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            }
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            DispatchQueue.main.async {
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                self.image = UIImage(data: content)
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               // self.dataHasLoaded = true
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                print("ImageLoader save to cache key: \(self.key)")
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                self.imageCache!.cache.write(image: self.image!, forKey: self.key)
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                //self.cache?[self.key as NSString] = self.image
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            }
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        }
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}
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