using Infrastructure.Attribute;
using Microsoft.AspNetCore.Http;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Infrastructure;
using ARW.Model;
using ARW.Repository;
using ARW.Model.Dto.Business.Custom.Regions;
using ARW.Model.Models.Business.Custom.Regions;
using ARW.Model.Vo.Business.Custom.Regions;
using ARW.Repository.Business.Custom.Regions;
using ARW.Service.Business.IBusinessService.Custom.Regions;

namespace ARW.Service.Business.BusinessService.Custom.Regions
{
    /// <summary>
    /// 省市区数据表接口实现类
    /// </summary>
    [AppService(ServiceType = typeof(IRegionService), ServiceLifetime = LifeTime.Transient)]
    public class RegionServiceImpl : BaseService<Region>, IRegionService
    {
        private readonly RegionRepository _RegionRepository;

        public RegionServiceImpl(RegionRepository RegionRepository)
        {
            _RegionRepository = RegionRepository;
        }

        #region 业务逻辑代码


        /// <summary>
        /// 查询省市区数据表树形列表
        /// </summary>
        public async Task<List<RegionVo>> GetRegionTreeList(RegionQueryDto parm)
        {
            //开始拼装查询条件
            var predicate = Expressionable.Create<Region>();
            predicate = predicate.AndIF(!string.IsNullOrEmpty(parm.RegionName), s => s.RegionName.Contains(parm.RegionName));
            predicate = predicate.AndIF(!string.IsNullOrEmpty(parm.RegionCode), s => s.RegionCode == parm.RegionCode);

            var query = _RegionRepository
                .Queryable()
                .LeftJoin<Region>((s, c) => s.RegionPid == c.RegionId)
                .Where(predicate.ToExpression())
                .OrderBy(s => s.RegionId, OrderByType.Asc)
                .Select((s, c) => new RegionVo
                {
                    RegionId = s.RegionId,
                    RegionName = s.RegionName,
                    RegionPid = s.RegionPid,
                    RegionCode = s.RegionCode,
                    RegionLevel = s.RegionLevel,
                    ParentName = c.RegionName,
                });

            return await query.ToTreeAsync(it => it.Children, it => it.RegionPid, 0);
        }


        /// <summary>
        /// 查询省市区数据表树形列表(二级)
        /// </summary>
        public async Task<List<SecondRegionVo>> GetSecondRegionTreeList(RegionQueryDto parm)
        {
            //开始拼装查询条件
            var predicate = Expressionable.Create<Region>();
            predicate = predicate.AndIF(!string.IsNullOrEmpty(parm.RegionName), s => s.RegionName.Contains(parm.RegionName));
            predicate = predicate.AndIF(!string.IsNullOrEmpty(parm.RegionCode), s => s.RegionCode == parm.RegionCode);
            predicate = predicate.And(s => s.RegionLevel <= 2);

            var query = _RegionRepository
                .Queryable()
                .LeftJoin<Region>((s, c) => s.RegionPid == c.RegionId)
                .Where(predicate.ToExpression())
                .OrderBy(s => s.RegionId, OrderByType.Asc)
                .Select((s, c) => new SecondRegionVo
                {
                    Id = s.RegionId,
                    Label = s.RegionName,
                    Pid = s.RegionPid,
                    Code = s.RegionCode,
                    ParentName = c.RegionName
                });

            return await query.ToTreeAsync(it => it.Children, it => it.Pid, 0);
        }


        /// <summary>
        /// 查询省市区数据表列表
        /// </summary>
		public Task<List<RegionVo>> GetRegionList(RegionQueryDto parm)
        {
            //开始拼装查询条件d
            var predicate = Expressionable.Create<Region>();

            predicate = predicate.AndIF(!string.IsNullOrEmpty(parm.RegionName), it => it.RegionName.Contains(parm.RegionName));
            predicate = predicate.AndIF(!string.IsNullOrEmpty(parm.RegionCode), it => it.RegionCode == parm.RegionCode);
            var query = _RegionRepository
                .Queryable()
                .Where(predicate.ToExpression())
                .OrderBy(s => s.RegionId, OrderByType.Asc)
                .Select(s => new RegionVo
                {
                    RegionId = s.RegionId,
                    RegionName = s.RegionName,
                    RegionPid = s.RegionPid,
                    RegionCode = s.RegionCode,
                    RegionLevel = s.RegionLevel,
                });


            return query.ToListAsync();
        }

        /// <summary>
        ///  添加或修改省市区数据表
        /// </summary>
        public async Task<string> AddOrUpdateRegion(Region model)
        {
            if (model.RegionId != 0)
            {
                var type = await _RegionRepository.GetListAsync(s => s.RegionPid == model.RegionId);
                if (type != null)
                {
                    foreach (var item in type)
                    {
                        if (model.RegionPid == item.RegionId) throw new CustomException("上级菜单不能选择自己的子级！");
                    }
                }
                if (model.RegionPid == model.RegionId) throw new CustomException("上级菜单不能选择与当前菜单一样的！");
                var response = await _RegionRepository.UpdateAsync(model);
                return "修改成功！";
            }
            else
            {
                var info = _RegionRepository.GetFirst(it => it.RegionId == model.RegionPid);

                var response = await _RegionRepository.InsertAsync(model);
                return "添加成功！";
            }
        }


        /// <summary>
        /// 获取省市区Id
        /// </summary>
        /// <param name="RegionCode">省市区编码</param>
        /// <returns></returns>
        /// <exception cref="NotImplementedException"></exception>
        public async Task<int> GetRegionId(string RegionCode, int level)
        {
            var region = await _RegionRepository.GetFirstAsync(s => s.RegionCode == RegionCode && s.RegionLevel == level);
            if (region == null) throw new Exception(RegionCode + "编码不正确");
            return region.RegionId;
        }



        #region Excel处理


        /// <summary>
        /// Excel数据导出处理
        /// </summary>
        public async Task<List<RegionVo>> HandleExportData(List<RegionVo> data)
        {
            return data;
        }

        #endregion



        #endregion

    }
}