using System;
using System.Collections.Generic;
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.Repository;
using Quadarax.Foundation.Core.Thread;
using ILogger = Quadarax.Foundation.Core.Logging.ILogger;

namespace Quadarax.Foundation.Core.Business
{
    public abstract class AbstractWorkerService<TWorker, TRepository> : AbstractRepositoryService<TRepository> 
        where TRepository: IRepository
        where TWorker : AbstractWorker, new()
    {

        #region *** Private fields ***
        private IList<Tuple<WorkerStatusInfo,TWorker>> _workers = new List<Tuple<WorkerStatusInfo,TWorker>>();
        private IWorkerSettings _wrkSettings;
        private object _lockTransient = null;
        #endregion

        #region *** Properties ***
        protected abstract string Name { get; }
        #endregion


        #region *** Constructors ***
        protected AbstractWorkerService(IWorkerSettings workerSettings, TRepository repository, IContext currentContext, ILoggerFactory logger) : base(repository, currentContext, logger)
        {
            State = ServiceStateEnum.Initializing;
            _wrkSettings = workerSettings ?? throw new ArgumentNullException(nameof(workerSettings));
            InitInternal();
        }
        #endregion

        #region *** Public Operations ***
        public void Start()
        {
            lock (_lockTransient)
            {
                _lockTransient = new object();

                for(var a=0;a<_wrkSettings.WorkerCount;a++)
                {
                    var wrk = (TWorker)Activator.CreateInstance(typeof(TWorker),$"{Name}#{a}", new RepoWorkerContext(Repository), (ILogger)LoggerFactory.CreateLogger(this.GetType()));
                    var info = new WorkerStatusInfo(wrk?.Name);
                    _workers.Add(new Tuple<WorkerStatusInfo, TWorker>(info, wrk));
                    wrk?.Start();
                    info.SetStart();
                    info.SetIterations(wrk.CurrentThreadId, wrk.IterationCount);
                }

                _lockTransient = null;
                State = ServiceStateEnum.Online;
            }
        }
        public void Stop()
        {
            lock (_lockTransient)
            {
                _lockTransient = new object();

                foreach (var wrk in _workers)
                {
                    wrk.Item2.Stop();
                    wrk.Item1.SetStop();
                    wrk.Item1.SetIterations(wrk.Item2.CurrentThreadId, wrk.Item2.IterationCount);

                }
                _lockTransient = null;
                State = ServiceStateEnum.Offline;
            }
        }

        #endregion


        #region *** Private Operations ***
        private void InitInternal()
        {
        }
        #endregion

        #region *** Nested Classes ***

        private class RepoWorkerContext : IWorkerContext
        {
            public TRepository Repository { get; }

            public RepoWorkerContext(TRepository repository)
            {
                Repository = repository ?? throw new ArgumentNullException(nameof(repository));
            }
        }

        #endregion
    }



    public abstract class AbstractWorkerService<TWorker, TRepository, TRepository1> : AbstractWorkerService<TWorker, TRepository>
        where TRepository : IRepository
        where TRepository1 : IRepository
        where TWorker : AbstractWorker, new()
    {
        protected TRepository1 Repository1 { get; }
        protected AbstractWorkerService(IWorkerSettings workerSettings,TRepository1 repository1, TRepository repository, IContext currentContext, ILoggerFactory logger) : base(workerSettings, repository, currentContext, logger)
        {
            Repository1 = repository1 ?? throw new ArgumentNullException(nameof(repository1));
        }
    }

    public abstract class AbstractWorkerService<TWorker, TRepository, TRepository1, TRepository2> : AbstractWorkerService<TWorker, TRepository, TRepository1>
        where TRepository : IRepository
        where TRepository1 : IRepository
        where TRepository2 : IRepository
        where TWorker : AbstractWorker, new()
    {
        protected TRepository2 Repository2 { get; }
        protected AbstractWorkerService(IWorkerSettings workerSettings,TRepository2 repository2, TRepository1 repository1, TRepository repository, IContext currentContext, ILoggerFactory logger) : base(workerSettings,repository1, repository, currentContext, logger)
        {
            Repository2 = repository2 ?? throw new ArgumentNullException(nameof(repository2));
        }
    }

    public abstract class AbstractWorkerService<TWorker, TRepository, TRepository1, TRepository2, TRepository3> : AbstractWorkerService<TWorker, TRepository, TRepository1, TRepository2>
        where TRepository : IRepository
        where TRepository1 : IRepository
        where TRepository2 : IRepository
        where TRepository3 : IRepository
        where TWorker : AbstractWorker, new()
    {
        protected TRepository3 Repository3 { get; }
        protected AbstractWorkerService(IWorkerSettings workerSettings,TRepository3 repository3, TRepository2 repository2, TRepository1 repository1, TRepository repository, IContext currentContext, ILoggerFactory logger) : base(workerSettings, repository2, repository1, repository, currentContext, logger)
        {
            Repository3 = repository3 ?? throw new ArgumentNullException(nameof(repository3));
        }
    }

    public abstract class AbstractWorkerService<TWorker, TRepository, TRepository1, TRepository2, TRepository3, TRepository4> : AbstractWorkerService<TWorker, TRepository, TRepository1, TRepository2, TRepository3>
        where TRepository : IRepository
        where TRepository1 : IRepository
        where TRepository2 : IRepository
        where TRepository3 : IRepository
        where TRepository4 : IRepository
        where TWorker : AbstractWorker, new()
    {
        protected TRepository4 Repository4 { get; }
        protected AbstractWorkerService(IWorkerSettings workerSettings,TRepository4 repository4, TRepository3 repository3, TRepository2 repository2, TRepository1 repository1, TRepository repository, IContext currentContext, ILoggerFactory logger) : base(workerSettings,repository3,repository2,repository1, repository, currentContext, logger)
        {
            Repository4 = repository4 ?? throw new ArgumentNullException(nameof(repository4));
        }
    }
    

}