using AutoMapper;
using Entities.Contracts;
using Entities.DTO;

namespace TechHelper.Context
{
	public class AutoMapperProFile : Profile
	{
		public AutoMapperProFile()
		{
			CreateMap<UserForRegistrationDto, User>()
				.ForMember(dest => dest.Id, opt => opt.Ignore())                                    // ID由IdentityUser生成
				.ForMember(dest => dest.UserName, opt => opt.MapFrom(src => src.Name))              // 或者 MapFrom(src => src.Name)
				.ForMember(dest => dest.Email, opt => opt.MapFrom(src => src.Email))
				.ForMember(dest => dest.PhoneNumber, opt => opt.MapFrom(src => src.PhoneNumber))
				.ForMember(dest => dest.Address, opt => opt.MapFrom(src => src.HomeAddress))        // 映射到 IdentityUser 的 Address 属性
				.ForMember(dest => dest.PasswordHash, opt => opt.Ignore())                          // 密码哈希由 UserManager 处理
				.ForMember(dest => dest.EmailConfirmed, opt => opt.Ignore());                       // 邮箱确认状态由服务层处理

			CreateMap<ClassDto, Class>()
				.ForMember(d => d.Number, o => o.MapFrom(src => src.Class)).ReverseMap();

			CreateMap<SubQuestionDto, Question>()
				 .ForMember(dest => dest.Id, opt => opt.Ignore())
				 .ForMember(dest => dest.QuestionText, opt => opt.MapFrom(src => src.Stem))
				 .ForMember(dest => dest.CorrectAnswer, opt => opt.MapFrom(src => src.SampleAnswer))
				 .ForMember(dest => dest.QuestionType, opt => opt.MapFrom(src => Enum.Parse<QuestionType>(src.QuestionType, true)))
				 .ForMember(dest => dest.DifficultyLevel, opt => opt.MapFrom(src => Enum.Parse<DifficultyLevel>(src.DifficultyLevel, true)))
				 .ForMember(dest => dest.SubjectArea, opt => opt.Ignore()) // SubjectArea 来自 Assignment 而不是 SubQuestionDto
				 .ForMember(dest => dest.CreatedBy, opt => opt.Ignore())
				 .ForMember(dest => dest.CreatedAt, opt => opt.Ignore())
				 .ForMember(dest => dest.UpdatedAt, opt => opt.Ignore())
				 .ForMember(dest => dest.IsDeleted, opt => opt.Ignore());

			// 2. Question -> SubQuestionDto (查看时)
			CreateMap<Question, SubQuestionDto>()
				.ForMember(dest => dest.Stem, opt => opt.MapFrom(src => src.QuestionText))
				.ForMember(dest => dest.Score, opt => opt.Ignore()) // Question 实体没有 Score 字段，需要从 AssignmentQuestion 获取
				.ForMember(dest => dest.SampleAnswer, opt => opt.MapFrom(src => src.CorrectAnswer))
				.ForMember(dest => dest.QuestionType, opt => opt.MapFrom(src => src.QuestionType.ToString()))
				.ForMember(dest => dest.DifficultyLevel, opt => opt.MapFrom(src => src.DifficultyLevel.ToString()))
				.ForMember(dest => dest.Options, opt => opt.Ignore()); // Options 需要单独处理
		}
	}
	
}