Downloading video with alamofire not working - ios

Question

I have a list of URLMedia items, which can be a video or Image from and URL in the internet. I want to show to the user, and for improving the user experience, I want to catch the media locally, so the user can see the next media item immediately without needed to download it.
The interface is ready for testing the functionality. You have the media viewer, and down 2 buttons: 1 for go to next media, one for catch the data. There are 4 items as example, 2 videos 2 images, and you can go in loop over the 4 items over and over.
So far the functionality for the photos works fine, you can perceive the speed difference between going to next media before catching the data and after catching it, is immediate. The problem comes with the video, it does not work, and I can't figure out why. There are some limitations about the tempo folder I am unaware of?
This is the main view
struct ContentView: View {
#StateObject private var AS: AppState = AppState.singleton
func downloadUsingAlamofire(urlInput: URL, index: Int) {
AF.download(urlInput).responseURL { response in
// Read file from provided file URL.
AS.models[index].URLCachedMedia = response.fileURL!.absoluteString
print("Done downloading: \(AS.getCurrentModel().URLCachedMedia)")
print("In task: \(index)")
}
}
var body: some View {
VStack {
switch AS.currentType {
case .image:
AsyncImage(url: URL(string: AS.getCurrentModel().URLCachedMedia))
case .video:
PlayerView(videoURL: AS.getCurrentModel().URLCachedMedia)
}
HStack (spacing: 30) {
Button("Next model") {
AS.nextModel()
print("The URL of the model is: \(AS.getCurrentModel().URLCachedMedia)")
}
Button("Cach media") {
for (index, model) in AS.models.enumerated() {
downloadUsingAlamofire(urlInput: URL(string: model.URLMedia)!, index: index)
}
}
}
}
}
}
Video player view, optimise to auto-play when the video is ready:
struct PlayerView: View {
var videoURL : String
#State private var player : AVPlayer?
var body: some View {
VideoPlayer(player: player)
.onAppear() {
// Start the player going, otherwise controls don't appear
guard let url = URL(string: videoURL) else {
return
}
let player = AVPlayer(url: url)
self.player = player
player.play()
}
.onDisappear() {
// Stop the player when the view disappears
player?.pause()
}
}
}
This is the State of the app
class AppState: ObservableObject {
static let singleton = AppState()
private init() {}
#Published var models: [Model] = getModels()
#Published var currentModel: Int = 0
#Published var currentType: TypeMedia = getModels()[0].type
func nextModel() {
if currentModel < models.count - 1 {
currentModel += 1
} else {
currentModel = 0
}
currentType = getCurrentModel().type
}
func getCurrentModel() -> Model {
return models[currentModel]
}
}
And this is the model, with the demo data to test
enum TypeMedia {
case image, video
}
class Model: ObservableObject {
let URLMedia: String
#Published var URLCachedMedia: String
let type: TypeMedia
init(URLMedia: String, type: TypeMedia) {
self.URLMedia = URLMedia
self.type = type
self.URLCachedMedia = self.URLMedia
}
}
func getModels() -> [Model] {
let model1 = Model(URLMedia: "https://storage.googleapis.com/gtv-videos-bucket/sample/ElephantsDream.mp4", type: .video)
let model2 = Model(URLMedia: "https://storage.googleapis.com/gtv-videos-bucket/sample/ForBiggerEscapes.mp4", type: .video)
let model3 = Model(URLMedia: "https://i0.wp.com/www.wikiwiki.in/wp-content/uploads/2021/09/Palki-Sharma-Upadhyay-Journalist-4.jpg?resize=761.25%2C428&ssl=1", type: .image)
let model4 = Model(URLMedia: "https://static.dw.com/image/60451375_403.jpg", type: .image)
return [model1, model3, model2, model4]
}