#nullable enable

using System;
using System.Linq;
using Cysharp.Threading.Tasks;
using ShrinkApp;

namespace ShrinkNetwork.Integration.App
{
    [ShrinkAppModuleInstaller]
    [Obsolete("ClassicHost compatibility only. ContextLoader projects should use ShrinkNetworkAppComponent from a composition root.")]
    public sealed class ShrinkNetworkAppInstaller : IShrinkAppModuleInstaller
    {
        public string ModuleId => "shrink.network";
        public int Order => -1400;
        public System.Collections.Generic.IReadOnlyList<string> DependsOn => Array.Empty<string>();

        public void RegisterServices(ShrinkAppContext context)
        {
            context.Services.Register(new ShrinkNetworkAppService(ShrinkNetworkRuntime.Default));
        }

        public UniTask InitializeAsync(ShrinkAppContext context)
        {
            return UniTask.CompletedTask;
        }
    }

    public sealed class ShrinkNetworkAppService
    {
        public ShrinkNetworkAppService(ShrinkNetworkService service)
        {
            Service = service ?? throw new ArgumentNullException(nameof(service));
        }

        public ShrinkNetworkService Service { get; }

        public ShrinkNetworkServiceDiagnosticsSnapshot GetDiagnosticsSnapshot()
            => Service.GetDiagnosticsSnapshot();

        public System.Collections.Generic.IReadOnlyList<string> GetSessionSummaries()
        {
            return Service.Sessions.Values
                .OrderBy(session => session.SessionId)
                .Select(session => $"session={session.SessionId}, remote={session.RemoteAddress}, peer={session.PeerKind}")
                .ToArray();
        }
    }
}