using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;
using EnVisage.Models;

namespace EnVisage.Code.BLL
{
    public class WorkWeekManager : ManagerBase<WorkWeek, WorkWeekModel>
    {
        public WorkWeekManager(EnVisageEntities dbContext)
            : base(dbContext)
        {
        }
        protected override WorkWeek InitInstance()
        {
            return new WorkWeek { Id = Guid.NewGuid() };
        }

        protected override WorkWeek RetrieveReadOnlyById(Guid key)
        {
            return DataTable.AsNoTracking().FirstOrDefault(t => t.Id == key);
        }

        public override DbSet<WorkWeek> DataTable
        {
            get
            {
                return DbContext.WorkWeeks;
            }
        }

        public override WorkWeek Save(WorkWeekModel model)
        {
			WorkWeek oldModel = null;

			if (model.Id != Guid.Empty)
				oldModel = this.Load(model.Id, false);

			var workWeek = base.Save(model);

			if (model.IsDefault && ((oldModel == null) || !oldModel.IsDefault))
				this.Activate(workWeek);

            return workWeek;
        }

        public void Activate(Guid Id)
        {
            foreach (var ww in DataTable)
            {
                if (ww.Id == Id)
                {
                    ww.IsDefault = true;
                    DbContext.Entry(ww).State = EntityState.Modified;
                }
                else if (ww.IsDefault)
                {
                    ww.IsDefault = false;
                    DbContext.Entry(ww).State = EntityState.Modified;
                }
            }
        }

		public void Activate(WorkWeek ww)
		{
			if ((ww.Id == Guid.Empty) || ww.IsDefault)
				return;

			var currentActiveWorkWeeks = DataTable.Where(x => x.IsDefault && !x.Id.Equals(ww.Id)).ToList();
			currentActiveWorkWeeks.ForEach(x =>
			{
				x.IsDefault = false;
				DbContext.Entry(x).State = EntityState.Modified;
			});

			ww.IsDefault = true;
		}

		public WorkWeek LoadDefault()
        {
            return DataTable.AsNoTracking().FirstOrDefault(t => t.IsDefault == true);
        }

    }
}