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

namespace LiteCharms.Features.CartPackages.Queries.Handlers;

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

            var package = await context.Packages.FirstOrDefaultAsync(p => p.Id == request.PackageId, cancellationToken);

            return package is not null
                ? Result.Ok(package.ToModel())
                : Result.Fail($"Failed to find package by ID {request.PackageId}");

        }
        catch (Exception ex)
        {
            return Result.Fail<Package>(new Error(ex.Message).CausedBy(ex));
        }
    }
}