using LiteCharms.Extensions;
using LiteCharms.Features.Shop.Orders.Models;
using LiteCharms.Features.Shop.Postgres;

namespace LiteCharms.Features.Orders.Queries.Handlers;

public class GetOrderRefundQueryHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<GetOrderRefundQuery, Result<OrderRefund>>
{
    public async ValueTask<Result<OrderRefund>> Handle(GetOrderRefundQuery request, CancellationToken cancellationToken)
    {
		try
		{
            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);

            var refund = await context.OrderRefunds.AsNoTracking()
                .FirstOrDefaultAsync(r => r.OrderId == request.OrderId && r.Id == request.OrderRefundId, cancellationToken);
            
            return refund is not null
                ? Result.Ok(refund.ToModel())
                : Result.Fail<OrderRefund>(new Error($"Refund {request.OrderRefundId} not found for the given OrderId: {request.OrderId}"));
        }
		catch (Exception ex)
		{
            return Result.Fail<OrderRefund>(new Error(ex.Message).CausedBy(ex));
        }
    }
}