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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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