using AutoMapper;
using AutoMapper.QueryableExtensions;
using IRaCIS.Application.ExpressionExtend;
using IRaCIS.Application.Interfaces;
using IRaCIS.Application.ViewModels;
using IRaCIS.Core.Application.Contracts.RequestAndResponse;
using IRaCIS.Core.Domain.Interfaces;
using IRaCIS.Core.Domain.Models;
using IRaCIS.Infra.Data.ExpressionExtend;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;

namespace IRaCIS.Application.Services
{
    public class DictionaryService : IDictionaryService
    {
        private readonly IDictionaryRepository _dicRepository;
        private readonly IDoctorDictionaryRepository _doctorDictionaryRepository;
        private readonly ITrialDictionaryRepository _trialDictionaryRepository;
        private readonly IMapper _mapper;

        public DictionaryService(IDictionaryRepository sysDicRepository, IDoctorDictionaryRepository doctorDictionaryRepository, ITrialDictionaryRepository trialDictionaryRepository,IMapper mapper)
        {
            _dicRepository = sysDicRepository;
            _doctorDictionaryRepository = doctorDictionaryRepository;
            _trialDictionaryRepository = trialDictionaryRepository;
            _mapper = mapper;
        }

        /// <summary> 根据字典 Key 获取字典数据 </summary>
        public DicResultDTO GetDictionaryResult(string[] searchArray)
        {
            var doctorViewList = _dicRepository.GetAll().ProjectTo<DicViewModelDTO>(_mapper.ConfigurationProvider).OrderBy(t => t.KeyName)
                .ThenBy(t => t.ShowOrder).ToList();

            var projectDicResult = new DicResultDTO();
            foreach (var searchItem in searchArray)
            {
                var item = searchItem.Trim();
                var tempDic = new Dictionary<Guid, string>();
                doctorViewList.Where(o => o.KeyName == item).ToList().ForEach(o => tempDic.Add(o.Id, o.Value));
                projectDicResult.DicList.Add(item, tempDic);
            }
            return projectDicResult;
        }

        public DicResultDTO GetAllDictionary()
        {
            var list = _dicRepository.GetAll().ProjectTo<DicViewModelDTO>(_mapper.ConfigurationProvider).OrderBy(t => t.KeyName)
                  .ThenBy(t => t.ShowOrder).ToList();

            var types = list.Select(u => u.KeyName).Distinct();

            var projectDicResult = new DicResultDTO();
            foreach (var type in types)
            {
                var tempDic = new Dictionary<Guid, string>();
                list.Where(o => o.KeyName == type).ToList().ForEach(o => tempDic.Add(o.Id, o.Value));
                projectDicResult.DicList.Add(type, tempDic);
            }
            return projectDicResult;
        }

        /// <summary> 根据Key，获取单个字典数组 </summary>
        public PageOutput<DicViewModelDTO> GetDicSelectList(DicQueryDTO dicSearchModel)
        {
            Expression<Func<Dictionary, bool>> dictionaryLambda = x => true;
            if (!string.IsNullOrWhiteSpace(dicSearchModel.KeyName.Trim()))
            {
                dictionaryLambda = dictionaryLambda.And(t => t.KeyName == dicSearchModel.KeyName.Trim());
            }
            var dicQueryable = _dicRepository.GetAll().Where(dictionaryLambda).ProjectTo<DicViewModelDTO>(_mapper.ConfigurationProvider);
            var totalCount = dicQueryable.Count();

            //处理排序字段
            var propName = dicSearchModel.SortField == string.Empty ? "KeyName" : dicSearchModel.SortField;
            //处理升序和降序
            dicQueryable = dicSearchModel.Asc ? dicQueryable.OrderBy(propName) : dicQueryable.OrderByDescending(propName);
            //分页
            dicQueryable = dicQueryable
                .Skip((dicSearchModel.PageIndex - 1) * dicSearchModel.PageSize)
                .Take(dicSearchModel.PageSize);
            var list = dicQueryable.OrderBy(t => t.ShowOrder).ToList();
            return new PageOutput<DicViewModelDTO>(dicSearchModel.PageIndex, dicSearchModel.PageSize, totalCount, list);
        }

        /// <summary> 根据Type、Key 获取字典 树结构 </summary>
        public List<DictionaryTreeNode> GetDicTree()
        {
            var keyNameTypeDistinctList = _dicRepository.Find(u => !(u.KeyName == "UserType" || u.KeyName == "InstitutionalType")).ProjectTo<KeyNameType>(_mapper.ConfigurationProvider).Distinct().ToList();
            var treeNodeList = new List<DictionaryTreeNode>();
            var group = keyNameTypeDistinctList.GroupBy(t => t.Type);
            foreach (var groupItem in group)
            {
                var node = new DictionaryTreeNode()
                {
                    Id = Guid.NewGuid(),
                    KeyName = groupItem.Key,
                    Type = groupItem.Key,
                    Children = keyNameTypeDistinctList.Where(t => t.Type == groupItem.Key).Select(t =>
                        new DictionaryTreeNode()
                        {
                            Id = Guid.NewGuid(),
                            KeyName = t.KeyName,
                            Type = t.Type,
                            Children = new List<DictionaryTreeNode>()
                        }).ToList()
                };
                treeNodeList.Add(node);
            }
            return treeNodeList;
        }

        /// <summary> 添加或更新字典数据 </summary>
        public IResponseOutput AddOrUpdateDictionary(DicViewModelDTO viewModel)
        {
            if (viewModel.Id == Guid.Empty)
            {
                var existItem = _dicRepository.FindSingleOrDefault(dic => dic.KeyName.Equals(viewModel.KeyName) && dic.Value.Equals(viewModel.Value));
                if (existItem != null)
                {
                    return ResponseOutput.NotOk("新添加项不能与当前类别下面子项同名，请修改名称");
                }
                var result = _dicRepository.Add(_mapper.Map<Dictionary>(viewModel));
                var success = _dicRepository.SaveChanges();
                return ResponseOutput.Result(success);
            }
            else
            {
                var existItem = _dicRepository.FindSingleOrDefault(dic => dic.KeyName.Equals(viewModel.KeyName) && dic.Value.Equals(viewModel.Value));
                if (existItem != null && existItem.Id != viewModel.Id)
                {
                    return ResponseOutput.NotOk("更新后的名称不能与该类别下子项同名，请修改名称");
                }
                var updateItem = _dicRepository.GetAll().FirstOrDefault(t => t.Id == viewModel.Id);
                _mapper.Map(viewModel, updateItem);
                _dicRepository.Update(updateItem);
                var success = _dicRepository.SaveChanges();
                return ResponseOutput.Result(success);
            }
        }

        /// <summary> 删除字典数据 </summary>
        public IResponseOutput DeleteDictionary(Guid id)
        {
            if (_doctorDictionaryRepository.GetAll().Any(t => t.DictionaryId == id))
            {
                return ResponseOutput.NotOk("医生简历表有数据关联此字典表项");
            }

            if (_trialDictionaryRepository.GetAll().Any(t => t.DictionaryId == id))
            {
                return ResponseOutput.NotOk("项目表有数据关联此字典表项");
            }

            var success = _dicRepository.Delete(t => t.Id == id);
            return ResponseOutput.Result(success);
        }

        /// <summary> 获取所有字典数据 </summary>
        public IEnumerable<string> GetDicSelect()
        {
            return _dicRepository.GetAll().Select(t => t.KeyName).Distinct().ToList();
        }

        public DicViewModelDTO GetDetailById(Guid id)
        {
            var result = _dicRepository.FindSingleOrDefault(u => u.Id == id);
            return _mapper.Map<DicViewModelDTO>(result);
        }
    }
}