using langguanApi.Extensions;
using langguanApi.Extensions.AutoDI;
using langguanApi.Model;
using langguanApi.Model.Entity;
using Mapster;
using Microsoft.AspNetCore.Mvc.ApiExplorer;
using System.Linq.Expressions;

namespace langguanApi.Service
{
    [ServiceInjection(InjectionType.Transient)]
    public class MenuService : BaseService<Menu>
    {
        private ILogger<MenuService> _logger;
        public MenuService(IConfiguration config, ILogger<MenuService> logger) : base(config, nameof(Menu))
        {
            _logger = logger;
        }
        public async Task<List<Menu>> GetMenusByParentId(string parentId)
        {
            Expression<Func<Menu, bool>> exp = filter => filter.IsDelete == false && filter.ParentId == parentId;
            return (await base.GetListWithExp(exp)).OrderBy(x => x.Sort).ToList();
        }
        /// <summary>
        /// 新增菜单
        /// </summary>
        /// <param name="menu">菜单实体</param>
        /// <returns></returns>
        public async Task<ApiResult> AddMenu(AddMenuDto menu)
        {
            try
            {
                var entity = menu.Adapt<Menu>();
                await base.CreateAsync(entity);
            }
            catch (Exception ex)
            {

                _logger.LogError($"新增菜单出现异常,请求参数:{Newtonsoft.Json.JsonConvert.SerializeObject(menu)}," +
                                $"请求接口：'api/Menu/AddMenu'，" +
                                $"异常信息：{ex.Message}," +
                                $"异常位置:{ex.StackTrace}"
                                );
                return new ApiResult { code = 1, msg = "保存菜单失败", data = false };
            }
            finally
            {
                _logger.LogInformation($"新增菜单参数：menu:{Newtonsoft.Json.JsonConvert.SerializeObject(menu)}");
            }
            return new ApiResult { code = 0, msg = "保存菜单信息成功", data = true };
        }
        public async Task<ApiResult> UpdateMenu(UpdateMenuDto menu)
        {
            var entity = menu.Adapt<Menu>();
            await base.UpdateAsync(entity.Id, entity);
            return new ApiResult();
        }
        /// <summary>
        /// 获取菜单树
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public async Task<ApiResult> Pager(reqpage input)
        {
            List<MenuTreeDto> dto = new List<MenuTreeDto>();
            try
            {
                var MenuList = await GetChildList("0");//获取跟节点
                if (MenuList.Any())
                {
                    foreach (var item in MenuList)
                    {
                        dto.Add(new MenuTreeDto()
                        {
                            Id = item.Id,
                            Name = item.Name,
                            Sort = item.Sort,
                            ParentId = item.ParentId,
                            ParentName = item.ParentName,
                            Children = await GetChildList(item.Id)
                        });
                    }
                    //筛选数据
                    if (!string.IsNullOrEmpty(input.key))
                    {
                        if (dto.Exists(p => p.Name == input.key) || 
                            dto.Exists(p => p.Children.Exists(c => c.Name == input.key)) ||
                            dto.Exists(p => p.ParentName == input.key))
                        {
                            if (dto.Exists(p => p.Name == input.key))
                            {
                                dto = dto.Where(p => p.Name == input.key).ToList();
                            }
                            else if (dto.Exists(p => p.Children.Exists(c => c.Name == input.key)))
                            {
                                dto = dto.SelectMany(p => p.Children).Where(p => p.Name == input.key).ToList();
                            }
                            else
                            {
                                dto = dto.SelectMany(p => p.Children).Where(p => p.ParentName == input.key).ToList();
                            }
                            return new ApiResult() { code = 0, data = dto, msg = "获取菜单列表" };
                        }
                        else
                        {
                            return new ApiResult() { code = 0, data = null, msg = "获取菜单列表不存在" };
                        }
                    }
                }
            }
            catch (Exception ex)
            {

                _logger.LogError($"获取菜单列表出现异常,请求参数:{Newtonsoft.Json.JsonConvert.SerializeObject(input)}," +
                                $"请求接口：'api/Menu/Pager'，" +
                                $"异常信息：{ex.Message}," +
                                $"异常位置:{ex.StackTrace}"
                                );
                return new ApiResult { code = 1, msg = "获取菜单列表失败", data = false };
            }
            finally
            {
                _logger.LogInformation($"获取菜单列表参数：menu:{Newtonsoft.Json.JsonConvert.SerializeObject(input)}");
            }
            return new ApiResult() { code = 0, data = dto, msg = "获取菜单列表" };
        }
        /// <summary>
        /// 递归获取子菜单列表
        /// </summary>
        /// <param name="parentId"></param>
        /// <returns></returns>
        public async Task<List<MenuTreeDto>> GetChildList(string parentId)
        {
            Expression<Func<Menu, bool>> exp = filter => filter.IsDelete == false && filter.ParentId == parentId;
            Expression<Func<Menu, bool>> expDataSource = filter => filter.IsDelete;
            var list = (await GetListWithExp(exp))
                .OrderBy(x => x.Sort)
                .ToList().Adapt<List<MenuTreeDto>>();
            var DataSourceList = (await GetAsync())
                .OrderBy(x => x.Sort)
                .ToList();//拿到所有数据源，筛选结果
            foreach (var item in list)
            {
                item.Children = await GetChildList(item.Id);
                item.ParentName = DataSourceList.FirstOrDefault(p => p.Id == item.ParentId)?.Name;
                item.ParentId = DataSourceList.FirstOrDefault(p => p.Id == item.ParentId)?.Id;
            }
            return list;
        }
    }
}