using LiteCharms.Extensions;
using LiteCharms.Infrastructure.Database;
using LiteCharms.Models;

namespace LiteCharms.Features.Products.Queries.Handlers;

public class GetProductPricesQueryHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<GetProductPricesQuery, Result<ProductPrice[]>>
{
    public async ValueTask<Result<ProductPrice[]>> Handle(GetProductPricesQuery request, CancellationToken cancellationToken)
    {
        try
        {
            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);

            var products = await context.ProductPrices.AsNoTracking()
                .OrderByDescending(o => o.Id)
                .Take(request.MaxRecords)
                .ToArrayAsync(cancellationToken);

            return Result.Ok(products.Select(p => p.ToModel()).ToArray());
        }
        catch (Exception ex)
        {
            return Result.Fail<ProductPrice[]>(new Error(ex.Message).CausedBy(ex));
        }
    }
}