import MusubiCore
import NDIKit
import Observation

@MainActor @Observable
final class SourceListModel {
    enum State { case idle, searching, unavailable }

    private(set) var sources: [Source] = []
    private(set) var state: State = .idle
    private var finder: NDIFinder?

    func start() {
        guard state == .idle else { return }

        guard NDI.initialize() else {
            Log.ndi.error("NDI initialization failed (unsupported CPU)")
            state = .unavailable
            return
        }
        Log.ndi.info("NDI \(NDI.version, privacy: .public)")

        guard let finder = NDIFinder() else {
            Log.ndi.error("Could not create NDI finder")
            state = .unavailable
            return
        }
        self.finder = finder
        state = .searching

        Task { [weak self] in
            for await list in finder.sources {
                Log.ndi.info("Sources: \(list.map(\.ndiName), privacy: .public)")
                self?.sources = list.sorted { $0.ndiName.localizedStandardCompare($1.ndiName) == .orderedAscending }
            }
        }
    }
}