using Grand.Business.Core.Interfaces.Catalog.Categories;
using Grand.Web.Features.Models.Catalog;
using MediatR;

namespace Grand.Web.Features.Handlers.Catalog;

public class GetCategoryLayoutViewPathHandler : IRequestHandler<GetCategoryLayoutViewPath, string>
{
    private readonly ICategoryLayoutService _categoryLayoutService;

    public GetCategoryLayoutViewPathHandler(
        ICategoryLayoutService categoryLayoutService)
    {
        _categoryLayoutService = categoryLayoutService;
    }

    public async Task<string> Handle(GetCategoryLayoutViewPath request, CancellationToken cancellationToken)
    {
        var layout = await _categoryLayoutService.GetCategoryLayoutById(request.LayoutId) ??
                     (await _categoryLayoutService.GetAllCategoryLayouts()).FirstOrDefault();
        if (layout == null)
            throw new Exception("No default layout could be loaded");
        return layout.ViewPath;
    }
}