PowderCoatingLogix/src/PowderCoating.Application/Mappings/FormulaLibraryProfile.cs

using AutoMapper;
using PowderCoating.Core.Entities;
using PowderCoating.Application.DTOs.Company;

namespace PowderCoating.Application.Mappings;

public class FormulaLibraryProfile : Profile
{
    public FormulaLibraryProfile()
    {
        CreateMap<FormulaLibraryItem, FormulaLibraryCardDto>()
            .ForMember(dest => dest.InspiredByName,
                opt => opt.MapFrom(src => src.InspiredBy != null ? src.InspiredBy.Name : null))
            .ForMember(dest => dest.InspiredByCompanyName,
                opt => opt.MapFrom(src => src.InspiredBy != null ? src.InspiredBy.SourceCompanyName : null))
            .ForMember(dest => dest.AlreadyImported, opt => opt.Ignore()); // set by service

        CreateMap<FormulaLibraryItem, FormulaLibraryDetailDto>()
            .IncludeBase<FormulaLibraryItem, FormulaLibraryCardDto>()
            .ForMember(dest => dest.FieldCount,
                opt => opt.MapFrom(src => CountFields(src.FieldsJson)));
    }

    private static int CountFields(string fieldsJson)
    {
        try
        {
            var doc = System.Text.Json.JsonDocument.Parse(fieldsJson);
            return doc.RootElement.ValueKind == System.Text.Json.JsonValueKind.Array
                ? doc.RootElement.GetArrayLength()
                : 0;
        }
        catch { return 0; }
    }
}