using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Mavtozavr.DataAccess
{
    public class Repository
    {
        public static IQueryable<TEntity> FindAll<TEntity>()
            where TEntity : class
        {
            var context = new ListModelContainer();
            return context.Set<TEntity>();
        }

        public static void Insert<TEntity>(TEntity entity)
            where TEntity : class
        {
            var context = new ListModelContainer();

            context.Entry(entity).State = EntityState.Added;
            context.SaveChanges();
        }

        public static void InsertMany<TEntity>(IEnumerable<TEntity> entities)
            where TEntity : class
        {
            var context = new ListModelContainer();

            context.Configuration.AutoDetectChangesEnabled = false;
            context.Configuration.ValidateOnSaveEnabled = false;
            foreach (TEntity entity in entities)
                context.Entry(entity).State = EntityState.Added;
            context.SaveChanges();
            context.Configuration.AutoDetectChangesEnabled = true;
            context.Configuration.ValidateOnSaveEnabled = true;
        }

        public static void Delete<TEntity>(TEntity entity)
            where TEntity : class
        {
            var contex = new ListModelContainer();

            contex.Entry(entity).State = EntityState.Deleted;
            contex.SaveChanges();
        }

        public static void DeleteMany<TEntity>(IEnumerable<TEntity> entities)
            where TEntity : class
        {
            var context = new ListModelContainer();

            context.Configuration.AutoDetectChangesEnabled = false;
            context.Configuration.ValidateOnSaveEnabled = false;
            foreach (TEntity entity in entities)
                context.Entry(entity).State = EntityState.Deleted;
            context.SaveChanges();
            context.Configuration.AutoDetectChangesEnabled = true;
            context.Configuration.ValidateOnSaveEnabled = true;
        }
    }
}