blazor-swm/Features/Organization/Employee/Cqrs/GetEmployeeListHandler.cs

using Indotalent.Infrastructure.Database;
using MediatR;
using Microsoft.EntityFrameworkCore;

namespace Indotalent.Features.Organization.Employee.Cqrs;

public class GetEmployeeListResponse
{
    public string? Id { get; set; }
    public string? AutoNumber { get; set; }
    public string? Name { get; set; }
    public string? PhoneNumber { get; set; }
    public string? EmailAddress { get; set; }
    public string? EmployeeGroupName { get; set; }
    public string? EmployeeCategoryName { get; set; }
}

public record GetEmployeeListQuery() : IRequest<List<GetEmployeeListResponse>>;

public class GetEmployeeListHandler : IRequestHandler<GetEmployeeListQuery, List<GetEmployeeListResponse>>
{
    private readonly AppDbContext _context;

    public GetEmployeeListHandler(AppDbContext context) => _context = context;

    public async Task<List<GetEmployeeListResponse>> Handle(GetEmployeeListQuery request, CancellationToken cancellationToken)
    {
        return await _context.Employee
            .AsNoTracking()
            .Include(x => x.EmployeeGroup)
            .Include(x => x.EmployeeCategory)
            .OrderBy(x => x.Name)
            .Select(x => new GetEmployeeListResponse
            {
                Id = x.Id,
                AutoNumber = x.AutoNumber,
                Name = x.Name,
                PhoneNumber = x.PhoneNumber,
                EmailAddress = x.EmailAddress,
                EmployeeGroupName = x.EmployeeGroup != null ? x.EmployeeGroup.Name : string.Empty,
                EmployeeCategoryName = x.EmployeeCategory != null ? x.EmployeeCategory.Name : string.Empty
            })
            .ToListAsync(cancellationToken);
    }
}