Реализовал логику для приемов

Medical/MedicalBusinessLogic/BusinessLogics/VisitLogix.cs

@@ -0,0 +1,97 @@
+using MedicalDatabaseContracts;
+using MedicalDatabaseContracts.Models;
+using MedicalDatabaseContracts.SearchModels;
+using MedicalDatabaseContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+
+namespace MedicalBusinessLogic.BusinessLogics
+{
+    public class VisitLogix : AbstractLogic<Visit, VisitViewModel, VisitSearchModel>
+    {
+        private readonly IStorage<Patient> _patientStorage;
+        private readonly IStorage<Doctor> _doctorStorage;
+        private readonly IStorage<Diagnose> _diagnoseStorage;
+        public VisitLogix(
+            ILogger<AbstractLogic<Visit, VisitViewModel, VisitSearchModel>> logger,
+            IStorage<Visit> storage,
+            IStorage<Patient> patientStorage,
+            IStorage<Doctor> doctorStorage,
+            IStorage<Diagnose> diagnoseStorage) : base(logger, storage)
+        {
+            _patientStorage = patientStorage;
+            _doctorStorage = doctorStorage;
+            _diagnoseStorage = diagnoseStorage;
+        }
+
+        protected override bool CheckModelBySearchModel(Visit model, VisitSearchModel searchModel)
+        {
+            if (searchModel.Id != null && searchModel.Id != model.Id)
+                return false;
+            if (searchModel.DoctorId != null && searchModel.DoctorId != model.DoctorId)
+                return false;
+            if (searchModel.DiagnoseId != null && searchModel.DiagnoseId != model.DiagnoseId)
+                return false;
+            if (searchModel.PatientId != null && searchModel.PatientId != model.PatientId)
+                return false;
+            if (!string.IsNullOrEmpty(searchModel.Comment))
+            {
+                if (model.Comment == null)
+                    return false;
+                if (!model.Comment.Contains(searchModel.Comment))
+                    return false;
+            }
+            if (searchModel.Date != null && model.Date != searchModel.Date)
+                return false;
+            if (searchModel.Time != null && model.Time != searchModel.Time)
+                return false;
+            return true;
+        }
+
+        protected override void CheckModelIsValid(Visit model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            else if (ReadList(new VisitSearchModel { 
+                DoctorId = model.DoctorId,
+                Date = model.Date,
+                Time = model.Time
+            }).Count != 0)
+            {
+                throw new InvalidOperationException($"Запись приема к этому врачу на это время и дату уже есть");
+            }
+        }
+
+        protected override VisitViewModel GetViewModel(Visit model)
+        {
+            var visitViewModel = new VisitViewModel { 
+                PatientId = model.PatientId,
+                DoctorId = model.DoctorId,
+                DiagnoseId = model.DiagnoseId,
+                Date = model.Date,
+                Time = model.Time,
+                Comment = model.Comment ?? string.Empty,
+            };
+
+            var patient = _patientStorage.Get(model.PatientId);
+            if (patient != null)
+            {
+                visitViewModel.PatientFIO = patient.GetFIO();
+            }
+            var doctor = _doctorStorage.Get(model.DoctorId);
+            if (doctor != null)
+            {
+                visitViewModel.DoctorFIO = doctor.GetFIO();
+            }
+            if (model.DiagnoseId != null)
+            {
+                var diagnose = _diagnoseStorage.Get(model.DiagnoseId.Value);
+                if (diagnose != null)
+                {
+                    visitViewModel.DiagnoseName = diagnose.Name;
+                }
+            }
+        }
+    }
+}

Medical/MedicalDatabaseContracts/Models/AbstractPersonModel.cs

@@ -8,5 +8,9 @@ namespace MedicalDatabaseContracts.Models
         public string Surname { get; set; } = string.Empty;
         public string? Patronymic { get; set; }
         public string PhoneNumber { get; set; } = string.Empty;
+        public string GetFIO()
+        {
+            return string.Join(" ", Surname, Name, Patronymic ?? string.Empty);
+        }
     }
 }

Medical/MedicalDatabaseContracts/Models/Visit.cs

@@ -4,7 +4,7 @@
     {
         public int PatientId { get; set; }
         public int DoctorId { get; set; }
-        public int DiagnoseId { get; set; }
+        public int? DiagnoseId { get; set; }
         public string? Comment { get; set; }
         public DateOnly Date { get; set; }
         public TimeOnly Time { get; set; }

Medical/MedicalDatabaseContracts/SearchModels/VisitSearchModel.cs

@@ -8,5 +8,9 @@
         public TimeOnly? TimeFrom { get; set; }
         public TimeOnly? TimeTo { get; set; }
         public TimeOnly? Time { get; set; }
+        public string? Comment {  get; set; }
+        public int? PatientId { get; set; }
+        public int? DoctorId { get; set; }
+        public int? DiagnoseId { get; set; }
     }
 }

Medical/MedicalDatabaseContracts/ViewModels/VisitViewModel.cs

@@ -6,7 +6,7 @@ namespace MedicalDatabaseContracts.ViewModels
     {
         public int PatientId { get; set; }
         public int DoctorId { get; set; }
-        public int DiagnoseId { get; set; }
+        public int? DiagnoseId { get; set; }
         [DisplayName("Комментарий")]
         public string Comment { get; set; } = string.Empty;
         [DisplayName("Пациент")]