using System;
using System.Collections.Generic;
using System.Linq;
using WCS.Core;
using WCS.Entity;

namespace WCS.Service.Handlers
{
    public abstract class Work<T> : Work
    {
        public override sealed void Execute(object obj)
        {
            Do((T)obj);
        }

        public override sealed IEnumerable<object> GetObjs()
        {
            return InitObjects().OfType<object>().ToArray();
        }

        protected abstract void Do(T obj);

        protected abstract bool SelectDevice(WCS_DEVICE dev);

        protected virtual IEnumerable<T> InitObjects()
        {
            var arr = Device.Where(v => v.ENABLED)
                .Where(SelectDevice).ToArray();
            var res = arr.Select(v => (T)Activator.CreateInstance(typeof(T), v));
            return res;
        }
    }
}