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import SwiftUI
import UniformTypeIdentifiers
enum FilePreviewState: Equatable {
case unloaded
case loading
case loaded
case failed
}
@Observable
final class FilePreview: HotlineFileClientDelegate {
@ObservationIgnored let info: PreviewFileInfo
@ObservationIgnored var client: HotlineFileClient? = nil
var state: FilePreviewState = .unloaded
var progress: Double = 0.0
#if os(macOS)
var image: NSImage?
#endif
init(info: PreviewFileInfo) {
self.info = info
self.client = HotlineFileClient(address: info.address, port: UInt16(info.port), reference: info.id, size: UInt32(info.size), type: .preview)
self.client?.delegate = self
}
func download() {
self.client?.downloadToMemory()
}
func cancel() {
self.client?.cancel(deleteIncompleteFile: true)
}
func hotlineFileStatusChanged(client: HotlineFileClient, reference: UInt32, status: HotlineFileClientStatus, timeRemaining: TimeInterval) {
print("FILE STATUS CHANGED", status)
switch status {
case .unconnected:
state = .unloaded
progress = 0.0
case .connecting:
state = .loading
progress = 0.0
case .connected:
state = .loading
progress = 0.0
case .progress(let p):
state = .loading
progress = p
case .failed(_):
state = .failed
progress = 0.0
case .completed:
state = .loaded
progress = 1.0
}
}
func hotlineFileDownloadedData(client: HotlineFileClient, reference: UInt32, data: Data) {
self.state = .loaded
let fileExtension = (info.name as NSString).pathExtension
if let fileType = UTType(filenameExtension: fileExtension) {
if fileType.isSubtype(of: .image) {
self.image = NSImage(data: data)
}
}
}
}
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