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

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

namespace PowderCoating.Application.Mappings;

public class CustomItemTemplateProfile : Profile
{
    public CustomItemTemplateProfile()
    {
        CreateMap<CustomItemTemplate, CustomItemTemplateListDto>()
            .ForMember(dest => dest.FieldCount,
                opt => opt.MapFrom(src => CountFields(src.FieldsJson)));

        CreateMap<CustomItemTemplate, CustomItemTemplateDto>();

        CreateMap<CustomItemTemplate, CustomItemTemplatePickerDto>();

        CreateMap<CreateCustomItemTemplateDto, CustomItemTemplate>();

        CreateMap<UpdateCustomItemTemplateDto, CustomItemTemplate>()
            .ForMember(dest => dest.DiagramImagePath, opt => opt.Ignore()); // set by controller after blob upload

        CreateMap<CustomItemTemplate, UpdateCustomItemTemplateDto>();
    }

    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;
        }
    }
}