//===----------------------------------------------------------------------===//
// Copyright © 2026 Apple Inc. and the container project authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//

import ContainerResource
import ContainerXPC

/// Defines common characteristics and operations for a network.
public protocol Network: Sendable {
    /// The network's identifier.
    var id: String { get }

    /// An operational hint passed back to the runtime in the allocate response.
    /// Together with the plugin name, the runtime uses this to select the appropriate
    /// interface strategy for the sandbox. A `nil` value indicates that the plugin
    /// has only a single, default variant.
    nonisolated var variant: String? { get }

    /// The network's runtime status. `nil` before ``start()`` completes.
    var status: NetworkStatus? { get async }

    /// Use implementation-dependent network attributes.
    nonisolated func withAdditionalData(_ handler: (XPCMessage?) throws -> Void) throws

    /// Start the network.
    func start() async throws
}