initial commit

Core/Application/Features/CampaignManager/Queries/GetCampaignSingle.cs

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+using Application.Common.CQS.Queries;
+using AutoMapper;
+using Domain.Entities;
+using FluentValidation;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+
+namespace Application.Features.CampaignManager.Queries;
+
+public class GetCampaignSingleProfile : Profile
+{
+    public GetCampaignSingleProfile()
+    {
+    }
+}
+
+public class GetCampaignSingleResult
+{
+    public Campaign? Data { get; init; }
+}
+
+public class GetCampaignSingleRequest : IRequest<GetCampaignSingleResult>
+{
+    public string? Id { get; init; }
+}
+
+public class GetCampaignSingleValidator : AbstractValidator<GetCampaignSingleRequest>
+{
+    public GetCampaignSingleValidator()
+    {
+        RuleFor(x => x.Id).NotEmpty();
+    }
+}
+
+public class GetCampaignSingleHandler : IRequestHandler<GetCampaignSingleRequest, GetCampaignSingleResult>
+{
+    private readonly IQueryContext _context;
+
+    public GetCampaignSingleHandler(
+        IQueryContext context
+        )
+    {
+        _context = context;
+    }
+
+    public async Task<GetCampaignSingleResult> Handle(GetCampaignSingleRequest request, CancellationToken cancellationToken)
+    {
+        var query = _context
+            .Campaign
+            .AsNoTracking()
+            .Include(x => x.CampaignBudgetList.Where(budget => !budget.IsDeleted))
+            .Include(x => x.CampaignExpenseList.Where(expense => !expense.IsDeleted))
+            .Include(x => x.CampaignLeadList.Where(lead => !lead.IsDeleted))
+            .Where(x => x.Id == request.Id)
+            .AsQueryable();
+
+        var entity = await query.SingleOrDefaultAsync(cancellationToken);
+
+        return new GetCampaignSingleResult
+        {
+            Data = entity
+        };
+    }
+}