using AutoMapper;
using DTO;
using IServices;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using zhengcaioa.Models;

namespace Services
{
   public class AreaService: IAreaService
    {

        private readonly zhengcaioaContext _context;
        private readonly IMapper _mapper;
        public AreaService(zhengcaioaContext context, IMapper mapper)
        {
            _context = context;
            _mapper = mapper;
        }
        public ResultEntity save(AreaDTO dto)
        {
            ResultEntity resultEntity = new ResultEntity();
            try
            {
                var Area = _mapper.Map<Area>(dto);
                if (String.IsNullOrEmpty(Area.CodeId))
                {
                   // Area.CodeId = Guid.NewGuid().ToString();


                    _context.Areas.Add(Area);
                }
                else
                {
                    var updatepltRole = _context.Areas.Find(Area.CodeId);
                    if (updatepltRole != null)
                    {
                        updatepltRole.Name = Area.Name;
                        updatepltRole.ParentId = Area.ParentId;
                    }
                    else
                    {
                       // Area.CodeId = Guid.NewGuid().ToString();


                        _context.Areas.Add(Area);
                    }
                    
                   





                    

                }

                _context.SaveChanges();
                resultEntity.ReturnID = Area.CodeId;
                resultEntity.Result = true;
            }
            catch (Exception ex)
            {
                resultEntity.Result = false;
                resultEntity.Message = "保存失败，请联系管理员";

            }
            return resultEntity;
        }

        public AreaDTO Get(string id)
        {
            var entity = _context.Areas.Find(id);

            if (entity == null)
            {
                entity = new Area();
            }
            var AreaDTO = _mapper.Map<AreaDTO>(entity);
            return AreaDTO;
        }

        public ResultDataEntity<AreaDTO> SearchByPaging(AreaDTOSearch searchEntity)
        {
            ResultDataEntity<AreaDTO> data = new ResultDataEntity<AreaDTO>();

            

            var query = (from a in _context.Areas//.Where(x => x.RecStatus == "A")
                         join b in _context.Areas
                        on a.ParentId equals b.CodeId
                         into bsss
                         from bbb in bsss.DefaultIfEmpty()


                         where 1==1
                         && (string.IsNullOrWhiteSpace(searchEntity.Name) || a.Name.Contains(searchEntity.Name.Trim()))
                            && (string.IsNullOrWhiteSpace(searchEntity.ParentName) || bbb.Name.Contains(searchEntity.ParentName.Trim()))
                         select new AreaDTO
                         {
                             CodeId = a.CodeId,
                             Name = a.Name,
                             ParentName = bbb.Name,
                             ParentId = a.ParentId,
                         }).OrderBy(x => x.CodeId).ToList();








            //if (searchEntity.totalrows == 0)
                searchEntity.totalrows = query.Count();
            var rolelist = query.Skip((searchEntity.page - 1) * searchEntity.rows).Take(searchEntity.rows).ToList();

            data.LoadData(searchEntity, rolelist);
            return data;
        }

        public ResultEntity ModifyStatus(string id, string userid)
        {

            ResultEntity result = new ResultEntity();
            result.Result = true;

            var model = _context.Areas.Find(id);
            if (model != null)
            {
                _context.Areas.Remove(model);
                _context.SaveChanges();
            }

            return result;
        }



        /// <summary>
        /// 获取所有有效科目
        /// </summary>
        /// <returns></returns>
        public List<AreaDTO> GetList()
        {


            var listPosition = _context.Areas.ToList();

            var list = _mapper.Map<List<AreaDTO>>(listPosition);
            return list;
        }
    }
}