using System.Linq;
using AutoMapper;
using LeafWeb.Core.Entities;

namespace LeafWeb.Web.ViewModels.LeafOutput
{
	public class LeafOutputViewModel
	{
		private static readonly IMapper Mapper;

		public int LeafInputFileId { get; set; }
		public string LeafInputFilename { get; set; }
		public string CurrentStatus { get; set; }
		public string[] ErrorMessages { get; set; }
		public string[] LeafOutputFilenames { get; set; }
		public string LeafInputName { get; set; }
		public string LeafInputIdentifier { get; set; }
		public string LeafInputSiteId { get; set; }
		public string LeafInputPhotosynthesisType { get; set; }

		static LeafOutputViewModel()
		{
			var config =
			new MapperConfiguration(cfg =>
			{
				cfg.CreateMap<LeafInputFile, LeafOutputViewModel>()
					.ForMember(dest => dest.LeafInputFileId, opt => opt.MapFrom(src => src.Id))
					.ForMember(dest => dest.LeafInputFilename, opt => opt.MapFrom(src => src.Filename))
					.ForMember(dest => dest.LeafOutputFilenames,
						opt => opt.ResolveUsing(
							file => 
								file.LeafOutputFiles?
								.Select(o => o.Filename)
								.ToArray() 
								?? new string[] {}))
					.ForMember(dest => dest.LeafInputName, opt => opt.MapFrom(src => src.LeafInput.Name))
					.ForMember(dest => dest.LeafInputIdentifier, opt => opt.MapFrom(src => src.LeafInput.Identifier))
					.ForMember(dest => dest.LeafInputSiteId, opt => opt.MapFrom(src => src.LeafInput.SiteId))
					.ForMember(dest => dest.LeafInputPhotosynthesisType, opt => opt.MapFrom(src => src.LeafInput.PhotosynthesisType.Name))
					.ForMember(dest => dest.ErrorMessages, 
						opt => opt.ResolveUsing(
							src =>
								src.StatusHistory?
								.Where(sh => sh.Status == LeafInputStatusType.Error)
								.Select(sh => sh.Description)
								.ToArray() 
								?? new string[] {}));
			});
			Mapper = config.CreateMapper();
		}

		public LeafOutputViewModel(LeafInputFile leafInput)
		{
			Mapper.Map(leafInput, this);
		}
	}
}