import Combine
import MPAKX

extension BusUI {
  public final class ManyButton: ObservableObject {
    let key: String
    public let v = PassthroughSubject<Void, Never>()
    @Published public var id: String?
    var sub = [AnyCancellable]()
    var subscriptions = [AnyCancellable]()
   
    public init(_ key: String) {
      self.key = key

      $id
        .sink { [weak self] id in self?.setup(id) }
        .store(in: &sub)
    }

    private func setup(_ id: String?) {
      subscriptions = []

      Bus.sendSync(
        key,
        v
          .compactMap { v -> Any? in
            guard let id else { return nil }
            var d = [String: Bool]()
            return MPAK.Many([id], d)
          }
          .eraseToAnyPublisher(),
        &subscriptions
      )
    }
  }
}