Merge pull request 'entity customer added' (#4) from custom into provider

Reviewed-on: http://student.git.athene.tech/ker73rus/PIbd-21_Pyatakov_KM_Markov_DP_University/pulls/4

UniversityBusinessLogic/BusinessLogics/DisciplineLogic.cs

@@ -0,0 +1,97 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.BusinessLogicContracts;
+using UniversityContracts.SearchModels;
+using UniversityContracts.StoragesContracts;
+using UniversityContracts.ViewModels;
+
+namespace UniversityBusinessLogic.BusinessLogics
+{
+    public class DisciplineLogic : IDisciplineLogic
+    {
+        private readonly IDisciplineStorage _disciplineStorage;
+
+        public DisciplineLogic(IDisciplineStorage disciplineStorage)
+        {
+            _disciplineStorage = disciplineStorage;
+        }
+        public bool Create(DisciplineBindingModel model)
+        {
+            CheckModel(model);
+            if (_disciplineStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(DisciplineBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_disciplineStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public DisciplineViewModel? ReadElement(DisciplineSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var discipline = _disciplineStorage.GetElement(model);
+            if (discipline == null)
+            {
+                return null;
+            }
+            return discipline;
+        }
+
+        public List<DisciplineViewModel>? ReadList(DisciplineSearchModel? model)
+        {
+            var list = model == null ? _disciplineStorage.GetFullList() : _disciplineStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Update(DisciplineBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_disciplineStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        private void CheckModel(DisciplineBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentNullException("Нет Имени", nameof(model.Name));
+            }
+
+            var discipline = _disciplineStorage.GetElement(new DisciplineSearchModel { Name = model.Name });
+            if (discipline != null)
+            {
+                throw new InvalidOperationException("Дисциплина с таким названием уже есть");
+            }
+        }
+    }
+}

UniversityBusinessLogic/BusinessLogics/EducationGroupLogic.cs

@@ -0,0 +1,98 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.StoragesContracts;
+using UniversityContracts.ViewModels;
+
+namespace UniversityBusinessLogic.BusinessLogics
+{
+    public class EducationGroupLogic
+    {
+        private readonly IEducationGroupStorage _egStorage;
+
+        public EducationGroupLogic(IEducationGroupStorage cardStorage)
+        {
+            _egStorage = cardStorage;
+        }
+
+        public bool Create(EducationGroupBindingModel model)
+        {
+            CheckModel(model);
+            if (_egStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Update(EducationGroupBindingModel model)
+        {
+            CheckModel(model);
+            if (_egStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(EducationGroupBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_egStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public EducationGroupViewModel? ReadElement(EducationGroupSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var es = _egStorage.GetElement(model);
+            if (es == null)
+            {
+                return null;
+            }
+            return es;
+        }
+
+        public List<EducationGroupViewModel>? ReadList(EducationGroupSearchModel? model)
+        {
+            var list = model == null ? _egStorage.GetFullList() : _egStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        private void CheckModel(EducationGroupBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentNullException("Нет названия статуса обучения", nameof(model.Name));
+            }
+
+            var es = _egStorage.GetElement(new EducationGroupSearchModel
+            {
+                Name = model.Name,
+            });
+            if (es != null && es.Id != model.Id)
+            {
+                throw new InvalidOperationException("Статус с таким названием уже есть");
+            }
+        }
+    }
+}

UniversityBusinessLogic/BusinessLogics/StreamLogic.cs

@@ -0,0 +1,90 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.BusinessLogicContracts;
+using UniversityContracts.SearchModels;
+using UniversityContracts.StoragesContracts;
+using UniversityContracts.ViewModels;
+
+namespace UniversityBusinessLogic.BusinessLogics
+{
+    public class StreamLogic : IStreamLogic
+    {
+        private readonly IStreamStorage _streamStorage;
+
+        public StreamLogic(IStreamStorage streamStorage)
+        {
+            _streamStorage = streamStorage;
+        }
+
+        public bool Create(StreamBindingModel model)
+        {
+            CheckModel(model);
+            if (_streamStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Update(StreamBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_streamStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(StreamBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_streamStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public StreamViewModel? ReadElement(StreamSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var stream = _streamStorage.GetElement(model);
+            if (stream == null)
+            {
+                return null;
+            }
+            return stream;
+        }
+
+        public List<StreamViewModel>? ReadList(StreamSearchModel? model)
+        {
+            var list = model == null ? _streamStorage.GetFullList() : _streamStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        private void CheckModel(StreamBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentNullException("Нет названия потока", nameof(model.Name));
+            }
+        }
+    }
+}

UniversityContracts/BindingModels/DisciplineBindingModel.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityModels.Models;
+
+namespace UniversityContracts.BindingModels
+{
+    public class DisciplineBindingModel: IDisciplineModel
+    {
+        public int Id { get; set; }
+
+        public string Name { get; set; } = string.Empty;
+
+        public int Hours { get; set; }
+
+        public bool MarkType { get; set; }
+
+        public int StreamId { get; set; }
+
+        public int UserId { get; set; }
+    }
+}

UniversityContracts/BindingModels/EducationGroupBindingModel.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityModels.Models;
+
+namespace UniversityContracts.BindingModels
+{
+    public class EducationGroupBindingModel : IEducationGroupModel
+    {
+        public int Id { get; set; }
+        public string Name { get; set; } = string.Empty;
+        public int UserId { get; set; }
+        public int NumberOfStudent { get; set; }
+    }
+}

UniversityContracts/BindingModels/StreamBindingModel.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityModels.Models;
+
+namespace UniversityContracts.BindingModels
+{
+    public class StreamBindingModel : IStreamModel
+    {
+        public string Name { get; set; } = string.Empty;
+
+        public int Course { get; set; }
+
+        public int UserId { get; set; }
+
+        public int Id { get; set; }
+    }
+}

UniversityContracts/BusinessLogicContracts/IDisciplineLogic.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
+
+namespace UniversityContracts.BusinessLogicContracts
+{
+    public interface IDisciplineLogic
+    {
+        bool Create(DisciplineBindingModel model);
+        bool Update(DisciplineBindingModel model);
+        bool Delete(DisciplineBindingModel model);
+        List<DisciplineViewModel>? ReadList(DisciplineSearchModel? model);
+        DisciplineViewModel? ReadElement(DisciplineSearchModel model);
+    }
+}

UniversityContracts/BusinessLogicContracts/IEducationGroupLogic.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
+
+namespace UniversityContracts.BusinessLogicContracts
+{
+    public interface IEducationGroupLogic
+    {
+        bool Create(EducationGroupBindingModel model);
+        bool Update(EducationGroupBindingModel model);
+        bool Delete(EducationGroupBindingModel model);
+        List<EducationGroupViewModel>? ReadList(EducationGroupSearchModel? model);
+        EducationGroupViewModel? ReadElement(EducationGroupSearchModel model);
+    }
+}

UniversityContracts/BusinessLogicContracts/IStreamLogic.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
+
+namespace UniversityContracts.BusinessLogicContracts
+{
+    public interface IStreamLogic
+    {
+        bool Create(StreamBindingModel model);
+        bool Update(StreamBindingModel model);
+        bool Delete(StreamBindingModel model);
+        List<StreamViewModel>? ReadList(StreamSearchModel? model);
+        StreamViewModel? ReadElement(StreamSearchModel model);
+    }
+}

UniversityContracts/SearchModels/DisciplineSearchModel.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityContracts.SearchModels
+{
+    public class DisciplineSearchModel
+    {
+        public int? Id { get; set; }
+        public string Name { get; set; } = string.Empty;  
+        public int? StreamId { get; set; }
+        public int? UserId { get; set; }
+    }
+}

UniversityContracts/SearchModels/EducationGroupSearchModel.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityContracts.SearchModels
+{
+    public class EducationGroupSearchModel
+    {
+        public int? Id { get; set; }
+        public string? Name { get; set; }
+        public int? UserId { get; set; }
+        public int? NumberOfStudents { get; set; }
+    }
+}

UniversityContracts/SearchModels/StreamSearchModel.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityContracts.SearchModels
+{
+    public class StreamSearchModel
+    {
+        public int? Id { get; set; }
+        public int? UserId { get; set; }
+        public string? Name { get; set; }
+        public int? Course { get; set; }
+    }
+}

UniversityContracts/StoragesContracts/IDisciplineStorage.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
+
+namespace UniversityContracts.StoragesContracts
+{
+    public interface IDisciplineStorage
+    {
+        List<DisciplineViewModel> GetFullList();
+        List<DisciplineViewModel> GetFilteredList(DisciplineSearchModel model);
+        DisciplineViewModel? GetElement(DisciplineSearchModel model);
+        DisciplineViewModel? Insert(DisciplineBindingModel model);
+        DisciplineViewModel? Update(DisciplineBindingModel model);
+        DisciplineViewModel? Delete(DisciplineBindingModel model);
+    }
+}

UniversityContracts/StoragesContracts/IEducationGroupStorage.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
+
+namespace UniversityContracts.StoragesContracts
+{
+    public interface IEducationGroupStorage
+    {
+        List<EducationGroupViewModel> GetFullList();
+        List<EducationGroupViewModel> GetFilteredList(EducationGroupSearchModel model);
+        EducationGroupViewModel? GetElement(EducationGroupSearchModel model);
+        EducationGroupViewModel? Insert(EducationGroupBindingModel model);
+        EducationGroupViewModel? Update(EducationGroupBindingModel model);
+        EducationGroupViewModel? Delete(EducationGroupBindingModel model);
+    }
+}

UniversityContracts/StoragesContracts/IStreamStorage.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
+
+namespace UniversityContracts.StoragesContracts
+{
+    public interface IStreamStorage
+    {
+        List<StreamViewModel> GetFullList();
+        List<StreamViewModel> GetFilteredList(StreamSearchModel model);
+        StreamViewModel? GetElement(StreamSearchModel model);
+        StreamViewModel? Insert(StreamBindingModel model);
+        StreamViewModel? Update(StreamBindingModel model);
+        StreamViewModel? Delete(StreamBindingModel model);
+    }
+}

UniversityContracts/ViewModels/DisciplineViewModel.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityContracts.ViewModels
+{
+    public class DisciplineViewModel
+    {
+        public int Id { get; set; }
+        public int UserId { get; set; }
+        public int StreamId { get; set; }
+        [DisplayName("Название дисциплины")]
+        public string Name { get; set; } = string.Empty;
+        [DisplayName("Количество часов")]
+        public int Hours { get; set; } = 0;
+        [DisplayName("Тип оценки")]
+        public bool MarkType { get; set; } //TODO уточнить 
+    }
+}

UniversityContracts/ViewModels/EducationGroupViewModel.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityContracts.ViewModels
+{
+    public class EducationGroupViewModel
+    {
+        public int Id { get; set; }
+        [DisplayName("Название группы")]
+        public string Name { get; set; } = string.Empty;
+        [DisplayName("Количество студентов в группе")]
+        public int NumberOfStudents { get; set; }
+        public int UserId { get; set; }
+    }
+}

UniversityContracts/ViewModels/StreamViewModel.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityContracts.ViewModels
+{
+    public class StreamViewModel
+    {
+        public int Id { get; set; }
+        public int UserId { get; set; }
+        [DisplayName("Название потока")]
+        public string Name { get; set; } = string.Empty;
+        [DisplayName("Номер курса")]
+        public int Course { get; set; }
+    }
+}

UniversityDataBaseImplemet/Models/Discipline.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.ViewModels;
+using UniversityModels.Models;
+
+namespace UniversityDataBaseImplemet.Models
+{
+    public class Discipline : IDisciplineModel
+    {
+        public int Id { get; private set; }
+        [Required]
+        public string Name { get; set; } = string.Empty;
+        [Required]
+        public int UserId { get; set; }
+        [Required]
+        public int StreamId { get; set; }
+        [Required]
+        public int Hours { get; set; }
+        [Required]
+        public bool MarkType { get; set; }
+
+        public virtual Stream Stream { get; set; }
+        public virtual User User { get; set; }
+
+
+        public static Discipline? Create(DisciplineBindingModel model)
+        {
+            return new Discipline()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                UserId = model.UserId,
+                StreamId = model.StreamId,
+                Hours= model.Hours,
+                MarkType = model.MarkType
+            };
+        }
+        public void Update(DisciplineBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            UserId = model.UserId;
+            StreamId = model.StreamId;
+            Hours = model.Hours;
+            MarkType = model.MarkType;
+        }
+        public DisciplineViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            UserId = UserId,
+            StreamId = StreamId,
+            Hours = Hours,
+            MarkType = MarkType
+        };
+    }
+}

UniversityDataBaseImplemet/Models/Document.cs

@@ -22,7 +22,9 @@ namespace UniversityDataBaseImplemet.Models
         public int UserId { get; set; }
         [ForeignKey("DocumentId")]
         public virtual List<StudentDocument> Students { get; set; } = new();
-        public virtual EducationStatus User { get; set; }
+        [ForeignKey("DocumentId")]
+        public virtual List<EducationGroupDocument> EducationGroupDocument { get; set; } = new();
+        public virtual User User { get; set; }
 
         public static Document? Create(DocumentBindingModel model)
         {

UniversityDataBaseImplemet/Models/EducationGroup.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.ViewModels;
+using UniversityModels.Models;
+
+namespace UniversityDataBaseImplemet.Models
+{
+    public class EducationGroup : IEducationGroupModel
+    {
+        public int Id { get; private set; }
+        [Required]
+        public int NumberOfStudent { get; set; }
+        [Required]
+        public string Name { get; set; } = string.Empty;
+        [Required]
+        public int UserId { get; set; }
+        [ForeignKey("EducationGroupId")]
+        public virtual List<EducationGroupDocument> EducationGroupDocument { get; set; } = new();
+        [ForeignKey("EducationGroupId")]
+        public virtual List<EducationGroupStream> EducationGroupStream { get; set; } = new();
+        public virtual User User { get; set; }
+
+        public static EducationGroup? Create(EducationGroupBindingModel model)
+        {
+            return new EducationGroup()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                UserId = model.UserId,
+                NumberOfStudent= model.NumberOfStudent
+            };
+        }
+        public void Update(EducationGroupBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            UserId = model.UserId;
+        }
+        public EducationGroupViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            UserId = UserId,
+            NumberOfStudents= NumberOfStudent
+        };
+
+    }
+}

UniversityDataBaseImplemet/Models/EducationGroupDocument.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityDataBaseImplemet.Models
+{
+    public class EducationGroupDocument
+    {
+        public int Id { get; set; }
+        [Required]
+        public int EducationGroupId { get; set; }
+        [Required]
+        public int DocumentId { get; set; }
+        public virtual Document Document { get; set; } = new();
+        public virtual EducationGroup EducationGroup { get; set; } = new();
+    }
+}

UniversityDataBaseImplemet/Models/EducationGroupStream.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityDataBaseImplemet.Models
+{
+    public class EducationGroupStream
+    {
+        public int Id { get; set; }
+        [Required]
+        public int EducationGroupId { get; set; }
+        [Required]
+        public int StreamId { get; set; }
+        public virtual Stream Stream { get; set; } = new();
+        public virtual EducationGroup EducationGroup { get; set; } = new();
+    }
+}

UniversityDataBaseImplemet/Models/EducationStatus.cs

@@ -20,7 +20,7 @@ namespace UniversityDataBaseImplemet.Models
         public int UserId { get; set; }
         [ForeignKey("EducationStatusId")]
         public virtual List<Student> Students { get; set; } = new();
-        public virtual EducationStatus User { get; set; }
+        public virtual User User { get; set; }
 
         public static EducationStatus? Create(EducationStatusBindingModel model)
         {

UniversityDataBaseImplemet/Models/Stream.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using UniversityContracts.BindingModels;
+using UniversityContracts.ViewModels;
+using UniversityModels.Models;
+
+namespace UniversityDataBaseImplemet.Models
+{
+    public class Stream : IStreamModel
+    {
+        [Required]
+        public string Name { get; set; } = string.Empty;
+        [Required]
+        public int Course { get; set; }
+        [Required]
+        public int UserId { get; set; }
+
+        public int Id { get; private set; }
+        [ForeignKey("StreamId")]
+        public virtual List<EducationGroupStream> EducationGroupStream { get; set; } = new();
+        [ForeignKey("StreamId")]
+        public virtual List<StudentStream> StreamStudents { get; set; } = new();
+        public virtual User User { get; set; }
+
+        public static Stream Create(StreamBindingModel model)
+        {
+            return new Stream()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Course = model.Course,
+                UserId = model.UserId
+            };
+        }
+        public void Update(StreamBindingModel model)
+        {
+            Name = model.Name;
+            Course = model.Course;
+            UserId = model.UserId;
+        }
+        public StreamViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            UserId = UserId,
+            Course= Course
+        };
+    }
+}

UniversityDataBaseImplemet/Models/Student.cs

@@ -28,8 +28,10 @@ namespace UniversityDataBaseImplemet.Models
         public int UserId { get; set; }
         [ForeignKey("StudentId")]
         public virtual List<StudentDocument> DocumentStudents { get; set; } = new();
+        [ForeignKey("StudentId")]
+        public virtual List<StudentStream> StudentStream { get; set; } = new();
         public virtual EducationStatus EducationStatus { get; set; }
-        public virtual EducationStatus User { get; set; }
+        public virtual User User { get; set; }
 
         public static Student Create(StudentBindingModel model)
         {

UniversityDataBaseImplemet/Models/StudentStream.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityDataBaseImplemet.Models
+{
+    public class StudentStream
+    {
+        public int Id { get; set; }
+        [Required]
+        public int StudentId { get; set; }
+        [Required]
+        public int StreamId { get; set; }
+        public virtual Student Student { get; set; } = new();
+        public virtual Stream Stream { get; set; } = new();
+    }
+}

UniversityDataBaseImplemet/Models/User.cs

@@ -7,10 +7,11 @@ using System.Text;
 using System.Threading.Tasks;
 using UniversityContracts.BindingModels;
 using UniversityContracts.ViewModels;
+using UniversityModels.Models;
 
 namespace UniversityDataBaseImplemet.Models
 {
-    public class User
+    public class User : IUserModel
     {
         public int Id { get; private set; }
         [Required]

UniversityModels/Models/IDisciplineModel.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityModels.Models
+{
+    public interface IDisciplineModel : IId
+    {
+        string Name { get; }
+        int Hours { get; }
+        bool MarkType { get; }
+        int StreamId { get; }
+        int UserId { get; }
+    }
+}

UniversityModels/Models/IEducationGroupModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityModels.Models
+{
+    public interface IEducationGroupModel:IId
+    {
+        string Name { get;}
+        int NumberOfStudent { get;}
+        int UserId { get;}
+    }
+}

UniversityModels/Models/IStreamModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityModels.Models
+{
+    public interface IStreamModel:IId
+    {
+        string Name { get; }
+        int Course { get; }
+        int UserId { get; }
+    }
+}