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)
        {
            var entity = menu.Adapt<Menu>();
            await base.CreateAsync(entity);
            return new ApiResult { code = 0, msg = "保存菜单信息成功", data = true };
        }
        /// <summary>
        /// 更改菜单
        /// </summary>
        /// <param name="menu">菜单实体类</param>
        /// <returns></returns>
        public async Task<ApiResult> UpdateMenu(UpdateMenuDto menu)
        {
            var entity = menu.Adapt<Menu>();
            await base.UpdateAsync(entity.Id, entity);
            return new ApiResult() { code = 0, data = true, msg = "更新菜单成功" };
        }
        /// <summary>
        /// 获取菜单树
        /// </summary>
        /// <returns></returns>
        public async Task<ApiResult> GetMenuTree()
        {
            var result = await GetMenuTreeList();
            return new ApiResult() { data = result };
        }
        /// <summary>
        /// 获取菜单树
        /// </summary>
        /// <returns></returns>
        public async Task<List<MenuTreeDto>> GetMenuTreeList()
        {
            List<MenuTreeDto> dto = new List<MenuTreeDto>();
            var MenuList = await GetChildList("0");
            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)
                });
            }
            return dto;
        }
        /// <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;
            var list = (await GetListWithExp(exp))
                .OrderBy(x => x.Sort)
                .ToList().Adapt<List<MenuTreeDto>>();
            var DataSourceList = (await GetAsync()).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;
        }

        /// <summary>
        /// 作废菜单 (废弃，不做处理)
        /// </summary>
        /// <param name="id">当前菜单id</param>
        /// <returns></returns>
        public async Task<ApiResult> DeleteMenu(string id)
        {
            var entity = await base.GetAsync(id);
            if (entity == null)
            {
                return new ApiResult() { code = 0, data = false, msg = "删除菜单失败，Id不存在" };
            }
            entity.IsDelete = true;
            await base.UpdateAsync(id, entity);
            return new ApiResult() { code = 0, data = true, msg = "删除菜单成功" };
        }
    }
}