vegasco/src/WebApi/Cars/GetCars.cs

using Microsoft.AspNetCore.Http.HttpResults;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Vegasco.WebApi.Persistence;

namespace Vegasco.WebApi.Cars;

public static class GetCars
{
	public class ApiResponse
	{
		public IEnumerable<ResponseDto> Cars { get; set; } = [];
	}
	
	public record ResponseDto(Guid Id, string Name);

	public class Request
	{
		[FromQuery(Name = "page")] public int? Page { get; set; }
		[FromQuery(Name = "pageSize")] public int? PageSize { get; set; }
	}

	public static RouteHandlerBuilder MapEndpoint(IEndpointRouteBuilder builder)
	{
		return builder
			.MapGet("cars", Endpoint)
			.WithDescription("Returns all cars")
			.WithTags("Cars");
	}

	private static async Task<Ok<ApiResponse>> Endpoint(
		[AsParameters] Request request,
		ApplicationDbContext dbContext,
		CancellationToken cancellationToken)
	{
		List<ResponseDto> cars = await dbContext.Cars
			.Select(x => new ResponseDto(x.Id.Value, x.Name))
			.ToListAsync(cancellationToken);

		var response = new ApiResponse
		{
			Cars = cars
		};
		return TypedResults.Ok(response);
	}
}