Промежуточный слой БД + правки

Hotel/HotelContracts/BindingModels/ConferenceBookingBindingModel.cs

@@ -7,5 +7,8 @@ namespace HotelContracts.BindingModels
         public int ConferenceId { get; set; }
         public int HeadwaiterId { get; set; }
         public int Id { get; set; }
+        public string NameHall { get; set; } = string.Empty;
+        public DateTime? BookingDate { get; set; }
+        public Dictionary<int, ILunchModel> ConferenceBookingLunches { get; set; }
     }
 }

Hotel/HotelContracts/BindingModels/RoomBindingModel.cs

@@ -10,5 +10,6 @@ namespace HotelContracts.BindingModels
         public int MealPlanId { get; set; }
         public int HeadwaiterId { get; set; }
         public int Id { get; set; }
+        public Dictionary<int, ILunchModel> RoomLunches { get; set; }
     }
 }

Hotel/HotelContracts/SearchModels/ConferenceBookingSearchModel.cs

@@ -9,5 +9,11 @@ namespace HotelContracts.SearchModels
     public class ConferenceBookingSearchModel
     {
         public int? Id { get; set; }
+        public int? HeadwaiterId { get; set; }
+        public int? ConferenceId { get; set; }
+        public DateTime? BookingDate { get; set; }
+        public string? NameHall { get; set; }
+        public DateTime? DateFrom { get; set; }
+        public DateTime? DateTo { get; set; }
     }
 }

Hotel/HotelContracts/SearchModels/HeadwaiterSearchModel.cs

@@ -7,6 +7,7 @@
         public string? HeadwaiterPatronymic { get; set; }
         public string? HeadwaiterLogin { get; set; }
         public string? HeadwaiterPassword { get; set; }
+        public string? HeadwaiterEmail { get; set; }
         public int? Id { get; set; }
     }
 }

Hotel/HotelContracts/SearchModels/LunchSearchModel.cs

@@ -3,6 +3,7 @@
     public class LunchSearchModel
     {
         public string? LunchName { get; set; }
+        public int? HeadwaiterId { get; set; }
         public int? Id { get; set; }
     }
 }

Hotel/HotelContracts/SearchModels/RoomSearchModel.cs

@@ -3,6 +3,10 @@
     public class RoomSearchModel
     {
         public string? RoomName { get; set; }
+        public int? HeadwaiterId { get; set; }
+        public DateTime? DateFrom { get; set; }
+        public DateTime? DateTo { get; set; }
+        public int? MealPlanId { get; set; }
         public int? Id { get; set; }
     }
 }

Hotel/HotelContracts/ViewModels/ConferenceBookingViewModel.cs

@@ -1,4 +1,5 @@
 using HotelDataModels.Models;
+using System.ComponentModel;
 
 namespace HotelContracts.ViewModels
 {
@@ -7,5 +8,13 @@ namespace HotelContracts.ViewModels
         public int ConferenceId { get; set; }
         public int HeadwaiterId { get; set; }
         public int Id { get; set; }
+
+        [DisplayName("Дата начала конференции")]
+        public DateTime? BookingDate { get; set; }
+
+        public string ConfName { get; set; } = string.Empty;
+        public string NameHall { get; set; } = string.Empty;
+
+        public Dictionary<int, ILunchModel> ConferenceBookingLunches { get; set; }
     }
 }

Hotel/HotelContracts/ViewModels/RoomViewModel.cs

@@ -19,5 +19,7 @@ namespace HotelContracts.ViewModels
         public int MealPlanId { get; set; }
 
         public int HeadwaiterId { get; set; }
+
+        public Dictionary<int, ILunchModel> RoomLunches { get; set; }
     }
 }

Hotel/HotelDataBaseImplement/HotelDataBase.cs

@@ -1,5 +1,6 @@
 using HotelDataBaseImplement.Models;
 using Microsoft.EntityFrameworkCore;
+using System.Reflection;
 
 namespace HotelDataBaseImplement
 {
@@ -9,7 +10,7 @@ namespace HotelDataBaseImplement
         {
             if (optionsBuilder.IsConfigured == false)
             {
-                optionsBuilder.UseSqlServer(@"Data Source=ANNZHIMOL\SQLEXPRESS;Initial Catalog=HotelDataBaseFull;Integrated Security=True;MultipleActiveResultSets=True;;TrustServerCertificate=True");
+                optionsBuilder.UseSqlServer(@"Data Source=LAPTOP-M2G96S06\SQLEXPRESS;Initial Catalog=HotelDataBaseFull;Integrated Security=True;MultipleActiveResultSets=True;;TrustServerCertificate=True");
             }
             base.OnConfiguring(optionsBuilder);
         }
@@ -20,5 +21,11 @@ namespace HotelDataBaseImplement
         public virtual DbSet<Organiser> Organisers { set; get; }
         public virtual DbSet<ConferenceMember> ConferenceMembers { set; get; }
         public virtual DbSet<MealPlanMember> MealPlanMembers { set; get; }
+        public virtual DbSet<ConferenceBooking> ConferenceBookings { set; get; }
+        public virtual DbSet<Lunch> Lunches { set; get; }
+        public virtual DbSet<ConferenceBookingLunch> ConferenceBookingLunches { set; get; }
+        public virtual DbSet<Room> Rooms { set; get; }
+        public virtual DbSet<RoomLunch> RoomLunches { set; get; }
+        public virtual DbSet<Headwaiter> Headwaiters { set; get; }
     }
 }

Hotel/HotelDataBaseImplement/Implemets/ConferenceBookingStorage.cs

@@ -0,0 +1,167 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace HotelDataBaseImplement.Implemets
+{
+    public class ConferenceBookingStorage : IConferenceBookingStorage
+    {
+        public List<ConferenceBookingViewModel> GetFullList()
+        {
+            using var context = new HotelDataBase();
+
+            return context.ConferenceBookings
+                .Include(x => x.Lunches)
+                .ThenInclude(x => x.Lunch)
+                .ThenInclude(x => x.RoomLunches)
+                .ThenInclude(x => x.Room)
+                .Include(x => x.Conference)
+                .Include(x => x.Headwaiter)
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<ConferenceBookingViewModel> GetFilteredList(ConferenceBookingSearchModel model)
+        {
+            if (!model.DateFrom.HasValue && !model.DateTo.HasValue && !model.HeadwaiterId.HasValue)
+            {
+                return new();
+            }
+            using var context = new HotelDataBase();
+            if (model.DateFrom.HasValue)
+            {
+                return context.ConferenceBookings
+                       .Include(x => x.Lunches)
+                       .ThenInclude(x => x.Lunch)
+                       .ThenInclude(x => x.RoomLunches)
+                       .ThenInclude(x => x.Room)
+                       .Include(x => x.Conference)
+                       .Include(x => x.Headwaiter)
+                        .Where(x => x.BookingDate >= model.DateFrom && x.BookingDate <= model.DateTo && x.HeadwaiterId == model.HeadwaiterId)
+                        .Select(x => x.GetViewModel)
+                        .ToList();
+            }
+            else if (model.HeadwaiterId.HasValue)
+            {
+                return context.ConferenceBookings
+                    .Include(x => x.Lunches)
+                    .ThenInclude(x => x.Lunch)
+                    .ThenInclude(x => x.RoomLunches)
+                    .ThenInclude(x => x.Room)
+                    .Include(x => x.Conference)
+                    .Include(x => x.Headwaiter)
+                    .Where(x => x.HeadwaiterId == model.HeadwaiterId)
+                    .ToList()
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            return context.ConferenceBookings
+                .Include(x => x.Lunches)
+                .ThenInclude(x => x.Lunch)
+                .ThenInclude(x => x.RoomLunches)
+                .ThenInclude(x => x.Room)
+                .Include(x => x.Conference)
+                .Include(x => x.Headwaiter)
+                .Where(x => x.NameHall.Contains(model.NameHall))
+                .ToList()
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public ConferenceBookingViewModel? GetElement(ConferenceBookingSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.NameHall) && !model.Id.HasValue)
+            {
+                return null;
+            }
+
+            using var context = new HotelDataBase();
+
+            return context.ConferenceBookings
+                .Include(x => x.Lunches)
+                .ThenInclude(x => x.Lunch)
+                .ThenInclude(x => x.RoomLunches)
+                .ThenInclude(x => x.Room)
+                .Include(x => x.Conference)
+                .Include(x => x.Headwaiter)
+                .FirstOrDefault(x => (!string.IsNullOrEmpty(model.NameHall) && x.NameHall == model.NameHall) || (model.Id.HasValue && x.Id == model.Id))?
+               .GetViewModel;
+        }
+
+        public ConferenceBookingViewModel? Insert(ConferenceBookingBindingModel model)
+        {
+            using var context = new HotelDataBase();
+            var newConferenceBooking = ConferenceBooking.Create(context, model);
+
+            if (newConferenceBooking == null)
+            {
+                return null;
+            }
+
+            context.ConferenceBookings.Add(newConferenceBooking);
+            context.SaveChanges();
+
+            return context.ConferenceBookings
+                .Include(x => x.Lunches)
+                .ThenInclude(x => x.Lunch)
+                .ThenInclude(x => x.RoomLunches)
+                .ThenInclude(x => x.Room)
+                .Include(x => x.Conference)
+                .Include(x => x.Headwaiter)
+                .FirstOrDefault(x => x.Id == newConferenceBooking.Id)
+                ?.GetViewModel;
+        }
+
+        public ConferenceBookingViewModel? Update(ConferenceBookingBindingModel model)
+        {
+            using var context = new HotelDataBase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var elem = context.ConferenceBookings
+                     .Include(x => x.Lunches)
+                     .ThenInclude(x => x.Lunch)
+                     .ThenInclude(x => x.ConferenceBookingLunch)
+                     .ThenInclude(x => x.ConferenceBooking)
+                     .ThenInclude(x => x.Conference)
+                     .FirstOrDefault(rec => rec.Id == model.Id); if (elem == null)
+                {
+                    return null;
+                }
+                elem.Update(model);
+                context.SaveChanges();
+                if (model.ConferenceBookingLunches != null)
+                {
+                    elem.UpdateLunches(context, model);
+                }
+                transaction.Commit();
+                return elem.GetViewModel;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public ConferenceBookingViewModel? Delete(ConferenceBookingBindingModel model)
+        {
+            using var context = new HotelDataBase();
+
+            var element = context.ConferenceBookings.Include(x => x.Lunches).FirstOrDefault(rec => rec.Id == model.Id);
+
+            if (element != null)
+            {
+                context.ConferenceBookings.Remove(element);
+                context.SaveChanges();
+
+                return element.GetViewModel;
+            }
+
+            return null;
+        }
+    }
+}

Hotel/HotelDataBaseImplement/Implemets/HeadwaiterStorage.cs

@@ -0,0 +1,126 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace HotelDataBaseImplement.Implemets
+{
+    public class HeadwaiterStorage : IHeadwaiterStorage
+    {
+        public List<HeadwaiterViewModel> GetFullList()
+        {
+            using var context = new HotelDataBase();
+
+            return context.Headwaiters.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<HeadwaiterViewModel> GetFilteredList(HeadwaiterSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.HeadwaiterSurname) && string.IsNullOrEmpty(model.HeadwaiterName) 
+                && string.IsNullOrEmpty(model.HeadwaiterPatronymic))
+            {
+                return new();
+            }
+
+            using var context = new HotelDataBase();
+
+            return context.Headwaiters
+               .Include(x => x.ConferenceBookings)
+               .Include(x => x.Lunches)
+               .Include(x => x.Rooms)
+               .Where(x => x.HeadwaiterLogin.Contains(model.HeadwaiterLogin) && x.HeadwaiterPassword == model.HeadwaiterPassword)
+               .Select(x => x.GetViewModel)
+               .ToList();
+        }
+
+        public HeadwaiterViewModel? GetElement(HeadwaiterSearchModel model)
+        {
+            using var context = new HotelDataBase();
+
+            if (model.Id.HasValue)
+            {
+                return context.Headwaiters
+                    .Include(x => x.ConferenceBookings)
+                    .Include(x => x.Lunches)
+                    .Include(x => x.Rooms)
+                    .FirstOrDefault(x => x.Id == model.Id)?
+                    .GetViewModel;
+            }
+
+            if (!string.IsNullOrEmpty(model.HeadwaiterEmail) && !string.IsNullOrEmpty(model.HeadwaiterPassword))
+            {
+                return context.Headwaiters
+                    .Include(x => x.ConferenceBookings)
+                    .Include(x => x.Lunches)
+                    .Include(x => x.Rooms)
+                    .FirstOrDefault(x => x.HeadwaiterEmail.Equals(model.HeadwaiterEmail) && x.HeadwaiterPassword.Equals(model.HeadwaiterPassword))?
+                    .GetViewModel;
+            }
+
+            if (!string.IsNullOrEmpty(model.HeadwaiterEmail))
+            {
+                return context.Headwaiters
+                    .Include(x => x.ConferenceBookings)
+                    .Include(x => x.Lunches)
+                    .Include(x => x.Rooms)
+                    .FirstOrDefault(x => x.HeadwaiterEmail.Equals(model.HeadwaiterEmail))?
+                    .GetViewModel;
+            }
+
+            return null;
+        }
+
+        public HeadwaiterViewModel? Insert(HeadwaiterBindingModel model)
+        {
+            var newHeadwaiter = Headwaiter.Create(model);
+
+            if (newHeadwaiter == null)
+            {
+                return null;
+            }
+
+            using var context = new HotelDataBase();
+
+            context.Headwaiters.Add(newHeadwaiter);
+            context.SaveChanges();
+
+            return newHeadwaiter.GetViewModel;
+        }
+
+        public HeadwaiterViewModel? Update(HeadwaiterBindingModel model)
+        {
+            using var context = new HotelDataBase();
+
+            var headwaiter = context.Headwaiters.FirstOrDefault(x => x.Id == model.Id);
+
+            if (headwaiter == null)
+            {
+                return null;
+            }
+
+            headwaiter.Update(model);
+            context.SaveChanges();
+
+            return headwaiter.GetViewModel;
+        }
+
+        public HeadwaiterViewModel? Delete(HeadwaiterBindingModel model)
+        {
+            using var context = new HotelDataBase();
+
+            var element = context.Headwaiters.FirstOrDefault(rec => rec.Id == model.Id);
+
+            if (element != null)
+            {
+                context.Headwaiters.Remove(element);
+                context.SaveChanges();
+
+                return element.GetViewModel;
+            }
+
+            return null;
+        }
+    }
+}

Hotel/HotelDataBaseImplement/Implemets/LunchStorage.cs

@@ -0,0 +1,129 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System.Reflection;
+
+namespace HotelDataBaseImplement.Implemets
+{
+    public class LunchStorage : ILunchStorage
+    {
+        public List<LunchViewModel> GetFullList()
+        {
+            using var context = new HotelDataBase();
+
+            return context.Lunches
+                .Include(x => x.RoomLunches)
+                .ThenInclude(x => x.Room)
+                .Include(x => x.ConferenceBookingLunch)
+                .ThenInclude(x => x.ConferenceBooking)
+                .Include(x => x.Headwaiter)
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<LunchViewModel> GetFilteredList(LunchSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.LunchName) && !model.HeadwaiterId.HasValue)
+            {
+                return new();
+            }
+
+            using var context = new HotelDataBase();
+
+            if (model.HeadwaiterId.HasValue)
+            {
+                return context.Lunches
+                .Include(x => x.RoomLunches)
+                .ThenInclude(x => x.Room)
+                .Include(x => x.ConferenceBookingLunch)
+                .ThenInclude(x => x.ConferenceBooking)
+                .Include(x => x.Headwaiter)
+                    .Where(x => x.HeadwaiterId == model.HeadwaiterId)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+
+            return context.Lunches
+                .Include(x => x.RoomLunches)
+                .ThenInclude(x => x.Room)
+                .Include(x => x.ConferenceBookingLunch)
+                .ThenInclude(x => x.ConferenceBooking)
+                .Include(x => x.Headwaiter)
+                .Where(x => x.LunchName.Contains(model.LunchName))
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public LunchViewModel? GetElement(LunchSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.LunchName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+
+            using var context = new HotelDataBase();
+
+            return context.Lunches
+                .Include(x => x.RoomLunches)
+                .ThenInclude(x => x.Room)
+                .Include(x => x.ConferenceBookingLunch)
+                .ThenInclude(x => x.ConferenceBooking)
+                .FirstOrDefault(x => (!string.IsNullOrEmpty(model.LunchName) && x.LunchName == model.LunchName) || (model.Id.HasValue && x.Id == model.Id))?
+                .GetViewModel;
+        }
+
+        public LunchViewModel? Insert(LunchBindingModel model)
+        {
+            using var context = new HotelDataBase();
+
+            var newLunch = Lunch.Create(model);
+
+            if (newLunch == null)
+            {
+                return null;
+            }
+
+            context.Lunches.Add(newLunch);
+            context.SaveChanges();
+
+            return newLunch.GetViewModel;
+        }
+
+        public LunchViewModel? Update(LunchBindingModel model)
+        {
+            using var context = new HotelDataBase();
+
+            var lunch = context.Lunches.FirstOrDefault(x => x.Id == model.Id);
+
+            if (lunch == null)
+            {
+                return null;
+            }
+
+            lunch.Update(model);
+            context.SaveChanges();
+
+            return lunch.GetViewModel;
+        }
+
+        public LunchViewModel? Delete(LunchBindingModel model)
+        {
+            using var context = new HotelDataBase();
+
+            var element = context.Lunches.FirstOrDefault(rec => rec.Id == model.Id);
+
+            if (element != null)
+            {
+                context.Lunches.Remove(element);
+                context.SaveChanges();
+
+                return element.GetViewModel;
+            }
+
+            return null;
+        }
+    }
+}

Hotel/HotelDataBaseImplement/Implemets/RoomStorage.cs

@@ -0,0 +1,168 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace HotelDataBaseImplement.Implemets
+{
+    public class RoomStorage : IRoomStorage
+    {
+        public List<RoomViewModel> GetFullList()
+        {
+            using var context = new HotelDataBase();
+            return context.Rooms
+                .Include(x => x.Lunches)
+                .ThenInclude(x => x.Lunch)
+                .ThenInclude(x => x.ConferenceBookingLunch)
+                .ThenInclude(x => x.ConferenceBooking)
+                .Include(x => x.MealPlan)
+                .Include(x => x.Headwaiter)
+                .ToList()
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<RoomViewModel> GetFilteredList(RoomSearchModel model)
+        {
+            if (!model.Id.HasValue && !model.HeadwaiterId.HasValue)
+            {
+                return new();
+            }
+
+            using var context = new HotelDataBase();
+
+            if (model.HeadwaiterId.HasValue)
+            {
+                return context.Rooms
+                    .Include(x => x.Lunches)
+                    .ThenInclude(x => x.Lunch)
+                    .ThenInclude(x => x.ConferenceBookingLunch)
+                    .ThenInclude(x => x.ConferenceBooking)
+                    .Include(x => x.MealPlan)
+                    .Include(x => x.Headwaiter)
+                    .Where(x => x.HeadwaiterId == model.HeadwaiterId)
+                    .ToList()
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+
+            return context.Rooms
+                .Include(x => x.Lunches)
+                .ThenInclude(x => x.Lunch)
+                .ThenInclude(x => x.ConferenceBookingLunch)
+                .ThenInclude(x => x.ConferenceBooking)
+                .Include(x => x.MealPlan)
+                .Include(x => x.Headwaiter)
+                .Where(x => x.RoomName.Contains(model.RoomName))
+                .ToList()
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public RoomViewModel? GetElement(RoomSearchModel model)
+        {
+            if (!model.Id.HasValue && string.IsNullOrEmpty(model.RoomName))
+            {
+                return null;
+            }
+
+            using var context = new HotelDataBase();
+
+            return context.Rooms
+                .Include(x => x.Lunches)
+                .ThenInclude(x => x.Lunch)
+                .ThenInclude(x => x.ConferenceBookingLunch)
+                .ThenInclude(x => x.ConferenceBooking)
+                .Include(x => x.MealPlan)
+                .Include(x => x.Headwaiter)
+                .FirstOrDefault(x => (!string.IsNullOrEmpty(model.RoomName) && x.RoomName == model.RoomName) || (model.Id.HasValue && x.Id == model.Id))?
+                .GetViewModel;
+        }
+
+        
+        public RoomViewModel? Insert(RoomBindingModel model)
+        {
+            using var context = new HotelDataBase();
+            var newRoom = Room.Create(context, model);
+
+            if (newRoom == null)
+            {
+                return null;
+            }
+
+            context.Rooms.Add(newRoom);
+            context.SaveChanges();
+
+            return context.Rooms
+                .Include(x => x.Lunches)
+                .ThenInclude(x => x.Lunch)
+                .ThenInclude(x => x.ConferenceBookingLunch)
+                .ThenInclude(x => x.ConferenceBooking)
+                .ThenInclude(x => x.Conference)
+                .Include(x => x.MealPlan)
+                .Include(x => x.Headwaiter)
+                .FirstOrDefault(x => x.Id == newRoom.Id)
+                ?.GetViewModel;
+        }
+
+        public RoomViewModel? Update(RoomBindingModel model)
+        {
+            using var context = new HotelDataBase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var elem = context.Rooms
+                    .Include(x => x.Lunches)
+                    .ThenInclude(x => x.Lunch)
+                    .ThenInclude(x => x.ConferenceBookingLunch)
+                    .ThenInclude(x => x.ConferenceBooking)
+                    .ThenInclude(x => x.Conference)
+                    .FirstOrDefault(rec => rec.Id == model.Id);
+
+                if (elem == null)
+                {
+                    return null;
+                }
+
+                elem.Update(model);
+                context.SaveChanges();
+                if (model.RoomLunches != null)
+                {
+                    elem.UpdateLunches(context, model);
+                }
+                transaction.Commit();
+                return elem.GetViewModel;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public RoomViewModel? Delete(RoomBindingModel model)
+        {
+            using var context = new HotelDataBase();
+
+            var element = context.Rooms
+                .Include(x => x.Lunches)
+                .ThenInclude(x => x.Lunch)
+                .ThenInclude(x => x.ConferenceBookingLunch)
+                .ThenInclude(x => x.ConferenceBooking)
+                .ThenInclude(x => x.Conference)
+                .FirstOrDefault(rec => rec.Id == model.Id);
+
+            if (element != null)
+            {
+                context.Rooms.Remove(element);
+                context.SaveChanges();
+
+                return element.GetViewModel;
+            }
+
+            return null;
+        }
+    }
+}

Hotel/HotelDataBaseImplement/Models/ConferenceBooking.cs

@@ -1,11 +1,103 @@
-using HotelDataModels.Models;
+using HotelContracts.BindingModels;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace HotelDataBaseImplement.Models
 {
     public class ConferenceBooking : IConferenceBookingModel
     {
-        public int ConferenceId => throw new NotImplementedException();
+        public int ConferenceId { get; private set; }
-        public int HeadwaiterId => throw new NotImplementedException();
+        public int HeadwaiterId { get; private set; }
-        public int Id => throw new NotImplementedException();
+        public int Id { get; private set; }
+        public string NameHall { get; set; } = string.Empty;
+        public DateTime? BookingDate { get; set; }
+        public virtual Headwaiter Headwaiter { get; set; }
+        public virtual Conference Conference { get; set; }
+
+        [ForeignKey("ConferenceBookingId")]
+        public virtual List<ConferenceBookingLunch> Lunches { get; set; }
+
+        private Dictionary<int, ILunchModel> _conferenceBookingLunches = null;
+
+        [NotMapped]
+        public Dictionary<int, ILunchModel> ConferenceBookingLunches
+        {
+            get
+            {
+                if (_conferenceBookingLunches == null)
+                {
+                    using var context = new HotelDataBase();
+                    _conferenceBookingLunches = Lunches
+                        .ToDictionary(x => x.LunchId, x => (context.Lunches
+                        .FirstOrDefault(y => y.Id == x.LunchId)! as ILunchModel));
+                }
+                return _conferenceBookingLunches;
+            }
+        }
+
+        public static ConferenceBooking Create(HotelDataBase context, ConferenceBookingBindingModel model)
+        {
+            return new ConferenceBooking()
+            {
+                Id = model.Id,
+                ConferenceId = model.ConferenceId,
+                HeadwaiterId = model.HeadwaiterId,
+                NameHall = model.NameHall,
+                Lunches = model.ConferenceBookingLunches.Select(x => new ConferenceBookingLunch
+                {
+                    Lunch = context.Lunches.First(y => y.Id == x.Key),
+                }).ToList()
+            };
+        }
+
+        public void Update(ConferenceBookingBindingModel model)
+        {
+            ConferenceId = model.ConferenceId;
+            NameHall = model.NameHall;
+            BookingDate = model.BookingDate;
+        }
+
+        public ConferenceBookingViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ConferenceId = ConferenceId,
+            HeadwaiterId = HeadwaiterId,
+            NameHall = NameHall,
+            BookingDate = BookingDate,
+            ConferenceBookingLunches = ConferenceBookingLunches,
+            ConfName = Conference?.ConferenceName
+        };
+
+        public void UpdateLunches(HotelDataBase context, ConferenceBookingBindingModel model)
+        {
+            var conferenceBookingLunches = context.ConferenceBookingLunches.Where(rec => rec.ConferenceBookingId == model.Id).ToList();
+
+            if (conferenceBookingLunches != null && conferenceBookingLunches.Count > 0)
+            {
+                context.ConferenceBookingLunches.RemoveRange(conferenceBookingLunches.Where(rec => !model.ConferenceBookingLunches.ContainsKey(rec.LunchId)));
+                context.SaveChanges();
+
+                foreach (var updateLunch in conferenceBookingLunches)
+                {
+                    model.ConferenceBookingLunches.Remove(updateLunch.LunchId);
+                }
+                context.SaveChanges();
+            }
+
+            var conferenceBooking = context.ConferenceBookings.First(x => x.Id == Id);
+
+            foreach (var cm in model.ConferenceBookingLunches)
+            {
+                context.ConferenceBookingLunches.Add(new ConferenceBookingLunch
+                {
+                    ConferenceBooking = conferenceBooking,
+                    Lunch = context.Lunches.First(x => x.Id == cm.Key)
+                });
+                context.SaveChanges();
+            }
+            _conferenceBookingLunches = null;
+        }
     }
 }
+}

Hotel/HotelDataBaseImplement/Models/ConferenceBookingLunch.cs

@@ -10,7 +10,7 @@ namespace HotelDataBaseImplement.Models
 
         [Required]
         public int Count { get; set; }
-        public virtual ConferenceBooking ConferenceBookings { get; set; }
+        public virtual ConferenceBooking ConferenceBooking { get; set; }
-        public virtual Lunch Lunches { get; set; }
+        public virtual Lunch Lunch { get; set; }
     }
 }

Hotel/HotelDataBaseImplement/Models/Lunch.cs

@@ -17,13 +17,13 @@ namespace HotelDataBaseImplement.Models
         [Required]  
         public double LunchPrice { get; set; }
 
-        public virtual Headwaiter Headwaiters { get; set; }
+        public virtual Headwaiter Headwaiter { get; set; }
 
         [ForeignKey("LunchId")]
         public virtual List<RoomLunch> RoomLunches { get; set; } = new();
 
         [ForeignKey("LunchId")]
-        public virtual List<ConferenceBookingLunch> ConferenceBookingLunches { get; set; } = new();
+        public virtual List<ConferenceBookingLunch> ConferenceBookingLunch { get; set; } = new();
 
         public static Lunch? Create(LunchBindingModel model)
         {

Hotel/HotelDataBaseImplement/Models/Room.cs

@@ -1,14 +1,116 @@
-using HotelDataModels.Models;
+using HotelContracts.BindingModels;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace HotelDataBaseImplement.Models
 {
     public class Room : IRoomModel
     {
-        public string RoomName => throw new NotImplementedException();
+        public int Id { get; private set; }
-        public string RoomFrame => throw new NotImplementedException();
+
-        public double RoomPrice => throw new NotImplementedException();
+        [Required]
-        public int HeadwaiterId => throw new NotImplementedException();
+        public string RoomName { get; set; } = string.Empty;
-        public int MealPlanId => throw new NotImplementedException();
+
-        public int Id => throw new NotImplementedException();
+        [Required]
+        public string RoomFrame { get; set; } = string.Empty;
+
+        [Required]
+        public double RoomPrice { get; set; }
+
+        public int MealPlanId { get; private set; }
+        public int HeadwaiterId { get; private set; }
+
+        public virtual Headwaiter? Headwaiter { get; set; }
+        public virtual MealPlan? MealPlan { get; set; }
+
+        [ForeignKey("RoomId")]
+        public virtual List<RoomLunch> Lunches { get; set; }
+
+        private Dictionary<int, ILunchModel> _roomLunches = null;
+
+        [NotMapped]
+        public Dictionary<int, ILunchModel> RoomLunches
+        {
+            get
+            {
+                if (_roomLunches == null)
+                {
+                    using var context = new HotelDataBase();
+                    _roomLunches = Lunches
+                        .ToDictionary(x => x.LunchId, x => (context.Lunches
+                        .FirstOrDefault(y => y.Id == x.LunchId)! as ILunchModel));
+                }
+                return _roomLunches;
+            }
+        }
+
+        public static Room Create(HotelDataBase context, RoomBindingModel model)
+        {
+            return new Room()
+            {
+                Id = model.Id,
+                RoomName = model.RoomName,
+                RoomFrame = model.RoomFrame,
+                RoomPrice = model.RoomPrice,
+                HeadwaiterId = model.HeadwaiterId,
+                MealPlanId = model.MealPlanId,
+                Lunches = model.RoomLunches.Select(x => new RoomLunch
+                {
+                    Lunch = context.Lunches.First(y => y.Id == x.Key),
+                }).ToList()
+            };
+        }
+
+        public void Update(RoomBindingModel model)
+        {
+            RoomName = model.RoomName;
+            RoomFrame = model.RoomFrame;
+            RoomPrice = model.RoomPrice;
+            HeadwaiterId = model.HeadwaiterId;
+            MealPlanId = model.MealPlanId;
+        }
+
+        public RoomViewModel GetViewModel => new()
+        {
+            Id = Id,
+            RoomName = RoomName,
+            RoomFrame = RoomFrame,
+            HeadwaiterId = HeadwaiterId,
+            MealPlanId = MealPlanId,
+            RoomPrice = RoomPrice,
+            RoomLunches = RoomLunches
+        };
+
+        public void UpdateLunches(HotelDataBase context, RoomBindingModel model)
+        {
+            var roomLunches = context.RoomLunches.Where(rec => rec.RoomId == model.Id).ToList();
+
+            if (roomLunches != null)
+            {
+                context.RoomLunches.RemoveRange(roomLunches.Where(rec => !model.RoomLunches.ContainsKey(rec.LunchId)));
+                context.SaveChanges();
+
+                foreach (var updateLunch in roomLunches)
+                {
+                    model.RoomLunches.Remove(updateLunch.LunchId);
+                }
+                context.SaveChanges();
+            }
+
+            var room = context.Rooms.First(x => x.Id == Id);
+
+            foreach (var cm in model.RoomLunches)
+            {
+                context.RoomLunches.Add(new RoomLunch
+                {
+                    Room = room,
+                    Lunch = context.Lunches.First(x => x.Id == cm.Key)
+                });
+                context.SaveChanges();
+            }
+            _roomLunches = null;
+        }
     }
 }

Hotel/HotelDataBaseImplement/Models/RoomLunch.cs

@@ -10,7 +10,7 @@ namespace HotelDataBaseImplement.Models
 
         [Required]
         public int Count { get; set; }
-        public virtual Room Rooms { get; set; }
+        public virtual Room Room { get; set; }
-        public virtual Lunch Lunches { get; set; }
+        public virtual Lunch Lunch { get; set; }
     }
 }

Hotel/HotelDataModels/Models/IConferenceBookingModel.cs

@@ -4,5 +4,7 @@
     {
         int ConferenceId { get; }
         int HeadwaiterId { get; }
+        DateTime? BookingDate { get; }
+        public Dictionary<int, ILunchModel> ConferenceBookingLunches { get; }
     }
 }

Hotel/HotelDataModels/Models/IRoomModel.cs

@@ -7,5 +7,6 @@
         double RoomPrice { get; }
         int MealPlanId { get; }
         int HeadwaiterId { get; }
+        public Dictionary<int, ILunchModel> RoomLunches { get; }
     }
 }