@MainActor
class StreamManager: ObservableObject {
    @Published var currentStream: IPTVStream?
    @Published var playbackState: PlaybackState
    @Published var isLoading: Bool
    
    func loadStream(_ url: URL) async throws
    func startPlayback() async
    func pausePlayback()
    func stopPlayback()
}

actor DownloadManager {
    @Published var activeDownloads: [Download]
    @Published var completedDownloads: [Download]
    
    func startDownload(for item: DownloadableItem) async throws -> Download
    func pauseDownload(_ downloadId: UUID) async
    func resumeDownload(_ downloadId: UUID) async
    func cancelDownload(_ downloadId: UUID) async
    func deleteDownload(_ downloadId: UUID) async
}

actor HTTPStreamServer {
    var isRunning: Bool { get }
    var serverPort: Int { get }
    
    func startServer() async throws
    func stopServer() async
    func serveFile(at path: String) -> URL
    func getStreamingURL(for download: Download) -> URL?
}

struct PlatformNavigationView<Content: View>: View {
    let content: Content
    let navigationStyle: NavigationStyle
    
    init(@ViewBuilder content: () -> Content)
    
    var body: some View
}

struct IPTVStream: Codable, Identifiable {
    let id: UUID
    let name: String
    let url: URL
    let category: StreamCategory
    let logo: URL?
    let epgId: String?
    
    var isLive: Bool { get }
    var quality: StreamQuality { get }
}

struct Download: Identifiable, Codable {
    let id: UUID
    let originalURL: URL
    let localPath: URL
    let title: String
    let thumbnail: URL?
    
    var progress: Double
    var status: DownloadStatus
    var bytesDownloaded: Int64
    var totalBytes: Int64
    var estimatedTimeRemaining: TimeInterval?
    
    var downloadSpeed: Double { get }
    var isCompleted: Bool { get }
}

protocol DownloadableItem {
    var id: UUID { get }
    var title: String { get }
    var downloadURL: URL { get }
    var thumbnailURL: URL? { get }
    var estimatedSize: Int64? { get }
}

enum PlaybackState: CaseIterable {
    case stopped
    case loading
    case playing
    case paused
    case buffering
    case error(PlaybackError)
}

enum DownloadStatus: String, CaseIterable {
    case pending
    case downloading
    case paused
    case completed
    case failed
    case cancelled
}

enum StreamQuality: String, CaseIterable {
    case auto
    case sd480
    case hd720
    case hd1080
    case uhd4k
    
    var displayName: String { get }
    var bitrate: Int? { get }
}

enum StreamError: LocalizedError {
    case invalidURL
    case networkError(Error)
    case unsupportedFormat
    case authenticationFailed
    case serverError(Int)
    
    var errorDescription: String? { get }
}

enum DownloadError: LocalizedError {
    case networkError(Error)
    case insufficientStorage
    case fileSystemError
    case invalidURL
    case downloadCancelled
    
    var errorDescription: String? { get }
}

enum ServerError: LocalizedError {
    case portUnavailable
    case permissionDenied
    case serverStartupFailed
    case fileNotFound
    
    var errorDescription: String? { get }
}

struct IPTVConfiguration {
    static let shared = IPTVConfiguration()
    
    let baseURL: URL
    let apiKey: String?
    let userAgent: String
    let timeout: TimeInterval
    let maxConcurrentDownloads: Int
    let defaultQuality: StreamQuality
    
    private init()
}

struct ServerConfiguration {
    static let shared = ServerConfiguration()
    
    let defaultPort: Int
    let allowedOrigins: [String]
    let maxConnections: Int
    let bufferSize: Int
    
    private init()
}

let streamManager = StreamManager()
let streamURL = URL(string: "https://example.com/stream.m3u8")!

do {
    try await streamManager.loadStream(streamURL)
    await streamManager.startPlayback()
} catch {
    print("Failed to start stream: \(error)")
}

let downloadManager = DownloadManager()
let item = MovieItem(title: "Example Movie", downloadURL: movieURL)

do {
    let download = try await downloadManager.startDownload(for: item)
    print("Download started: \(download.id)")
} catch {
    print("Failed to start download: \(error)")
}

let server = HTTPStreamServer()

do {
    try await server.startServer()
    let streamURL = server.getStreamingURL(for: download)
    print("Streaming at: \(streamURL)")
} catch {
    print("Failed to start server: \(error)")
}