using System;
using Microsoft.Extensions.Logging;
using Quadarax.Foundation.Core.Business.Enums;
using Quadarax.Foundation.Core.Business.Interface;
using Quadarax.Foundation.Core.Data.Interface.Domain;
using Quadarax.Foundation.Core.Data.Interface.Entity;
using Quadarax.Foundation.Core.Data.Interface.Entity.Dto;
using Quadarax.Foundation.Core.Logging;

namespace Quadarax.Foundation.Core.Business
{
    public abstract class AbstractService : IService
    {
        #region *** Properties ***
        protected IQLog Log { get; }
        protected IContext CurrentContext { get; }
        protected IQLogger Logger { get; }

        public ServiceStateEnum State { get; protected set; }
        #endregion

        #region *** Constructors ***
        protected AbstractService(IContext currentContext, IQLogger logger)
        {
            State = ServiceStateEnum.Initializing;
            CurrentContext = currentContext ?? throw new ArgumentNullException(nameof(currentContext));
            if (logger == null)throw new ArgumentNullException(nameof(logger));

            Logger = logger;
            Log = logger.GetLogger(GetType());

                //if (currentContext == null)
            //{
            //    var genericIdentity = new GenericIdentity("genericIdentity");
            //    currentContext = new GenericPrincipal(genericIdentity, new string[] {});
            //}
            Log.Log(LogSeverityEnum.Trace, $"Service '{GetType().Name}' [Hash:{GetHashCode()}] initialized.");

            State = ServiceStateEnum.Online;
        }
        #endregion

        #region *** Private Operations ***
        protected TResult TryCatchBlock<TResult>(Func<TResult> fnc) where TResult : ResultDto
        {
            if (fnc == null)
                return null;
            var result = Activator.CreateInstance<TResult>();

            try
            {
                result = fnc();
            }
            catch (Exception e)
            {
                result.AppendException(e);
            }

            return result;
        }

        protected TContext GetContext<TContext>() where TContext : IContext
        {
            return (TContext)CurrentContext;
        }
        #endregion

        #region *** Public Operations ***


        public IResult Test()
        {
            return new ResultPlain();
        }

        #endregion
    }
}