add: контракты записи расходов и доходов

back/Contracts/DTOs/ChangeRecordDto.cs

@@ -0,0 +1,10 @@
+namespace Contracts.DTO;
+
+public interface ChangeRecordDto
+{
+    public Guid Id { get; set; }
+    public Guid UserId { get; set; }
+    public Guid SpendingGroupId { get; set; }
+    public decimal Sum { get; set; }
+    public DateTime ChangedAt { get; set; }
+}

back/Contracts/Mappers/ChangeRecordMapper.cs

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+using Contracts.DTO;
+using Contracts.ViewModels;
+
+namespace Contracts.Mappers;
+
+public static class ChangeRecordMapper
+{
+    public static ChangeRecordViewModel ToView(this ChangeRecordDto changeRecord) 
+        => new() 
+        { 
+            Id = changeRecord.Id, 
+            Sum = changeRecord.Sum, 
+            ChangedAt = changeRecord.ChangedAt 
+        }; 
+}

back/Contracts/Repositories/IChangeRecordRepo.cs

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+using Contracts.DTO;
+using Contracts.SearchModels;
+
+namespace Contracts.Repositories;
+
+public interface IChangeRecordRepo
+{
+    Task<ChangeRecordDto> Create(ChangeRecordDto changeRecord);
+    Task<ChangeRecordDto?> Get(ChangeRecordSearch search);
+    Task<IEnumerable<ChangeRecordDto>> GetList(ChangeRecordSearch? search = null);
+    Task<ChangeRecordDto?> Update(ChangeRecordDto changeRecord);
+    Task<ChangeRecordDto?> Delete(ChangeRecordSearch search);
+}

back/Contracts/SearchModels/ChangeRecordSearch.cs

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+namespace Contracts.SearchModels;
+
+public class ChangeRecordSearch
+{
+    public Guid? Id { get; set; }
+    public Guid? SpendingGroupId { get; set; }
+    public DateTime? From { get; set; }
+    public DateTime? To { get; set; }
+}

back/Contracts/Services/IChangeRecordService.cs

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+using Contracts.DTO;
+using Contracts.SearchModels;
+using Contracts.ViewModels;
+
+namespace Contracts.Services;
+
+public interface IChangeRecordService
+{
+    Task<ChangeRecordViewModel> Create(ChangeRecordDto model);
+    Task<ChangeRecordViewModel> Update(ChangeRecordDto model);
+    Task<ChangeRecordViewModel> Delete(ChangeRecordSearch search);
+    Task<IEnumerable<ChangeRecordViewModel>> GetList(ChangeRecordSearch search);
+}

back/Contracts/ViewModels/ChangeRecordViewModel.cs

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+namespace Contracts.ViewModels;
+
+public class ChangeRecordViewModel
+{
+    public Guid Id { get; set; }
+    public decimal Sum { get; set; }
+    public DateTime ChangedAt { get; set; }
+}