using System;
using System.Threading;
using System.Threading.Tasks;
using PlayerIO.GameLibrary;

namespace UPIO.Server
{
    internal class RecourcesEngine : Player
    {
        private BigDB bigDb;

        private async Task CalculateRecources(string tableName, string clientName, string clientId, Player client,
                                              CancellationToken cancellationToken)
        {
            var delay = TimeSpan.FromSeconds(30);

            cancellationToken.ThrowIfCancellationRequested();

            int aluminium = 0, uranium = 0;
            await bigDb.LoadAsync(tableName,clientId,(databaseobject) =>
                {
                    var recources = databaseobject.GetObject("Recources");
                    var aluminium = recources.GetInt("Aluminium");
                    var uranium = recources.GetInt("Uranium");

                    aluminium += 30;
                    uranium += 40;

                    recources.Set("Aluminium", aluminium);
                    recources.Set("Uranium", uranium);
                }, cancellationToken).ConfigureAwait(false);

            cancellationToken.ThrowIfCancellationRequested();
            await client.SendAsync("Recources", aluminium, uranium);
            cancellationToken.ThrowIfCancellationRequested();
            await Task.Delay(delay, cancellationToken).ConfigureAwait(false);
        }
    }
}

namespace UPIO.DB
{
    class BigDB
    {
        private void Load(string tableName, string clientId, Action<DatabaseObject> process, CancellationToken ctx)
        {
            // ...
        }

        private TaskScheduler scheduler;

        public Task LoadAsync(
                string tableName,
                string clientId,
                Action<DatabaseObject> process,
                CancellationToken ctx)
        {
            return Task.Factory.StartNew(
                () => Load(tableName, clientId, process, ctx),
                ctx,
                TaskCreationOptions.None,
                scheduler);
        }
    }
}