using System.Diagnostics;
using AutoMapper;
using DMS.Core.Enums;
using DMS.Core.Interfaces.Repositories;
using DMS.Core.Models;
using DMS.Infrastructure.Data;
using DMS.Infrastructure.Entities;
using Microsoft.Extensions.Logging;

namespace DMS.Infrastructure.Repositories;

/// <summary>
/// 菜单仓储实现类，负责菜单数据的持久化操作。
/// 继承自 <see cref="BaseRepository{DbMenu}"/> 并实现 <see cref="IMenuRepository"/> 接口。
/// </summary>
public class MenuRepository : BaseRepository<DbMenu>, IMenuRepository
{
    private readonly IMapper _mapper;

    /// <summary>
    /// 构造函数，注入 AutoMapper 和 SqlSugarDbContext。
    /// </summary>
    /// <param name="mapper">AutoMapper 实例，用于实体模型和数据库模型之间的映射。</param>
    /// <param name="dbContext">SqlSugar 数据库上下文，用于数据库操作。</param>
    /// <param name="logger">日志记录器实例。</param>
    public MenuRepository(IMapper mapper, SqlSugarDbContext dbContext, ILogger<MenuRepository> logger)
        : base(dbContext, logger)
    {
        _mapper = mapper;
    }


    /// <summary>
    /// 异步根据ID获取单个菜单。
    /// </summary>
    /// <param name="id">菜单的唯一标识符。</param>
    /// <returns>对应的菜单实体，如果不存在则为null。</returns>
    public async Task<MenuBean> GetByIdAsync(int id)
    {
        var dbMenu = await base.GetByIdAsync(id);
        return _mapper.Map<MenuBean>(dbMenu);
    }

    /// <summary>
    /// 异步获取所有菜单。
    /// </summary>
    /// <returns>包含所有菜单实体的列表。</returns>
    public async Task<List<MenuBean>> GetAllAsync()
    {
        var dbList = await base.GetAllAsync();
        return _mapper.Map<List<MenuBean>>(dbList);
    }

    /// <summary>
    /// 异步添加新菜单。
    /// </summary>
    /// <param name="entity">要添加的菜单实体。</param>
    /// <returns>添加成功后的菜单实体（包含数据库生成的ID等信息）。</returns>
    public async Task<MenuBean> AddAsync(MenuBean entity)
    {
        var dbMenu = await base.AddAsync(_mapper.Map<DbMenu>(entity));
        return _mapper.Map(dbMenu, entity);
    }

    /// <summary>
    /// 异步更新现有菜单。
    /// </summary>
    /// <param name="entity">要更新的菜单实体。</param>
    /// <returns>受影响的行数。</returns>
    public async Task<int> UpdateAsync(MenuBean entity) => await base.UpdateAsync(_mapper.Map<DbMenu>(entity));

    /// <summary>
    /// 异步删除菜单。
    /// </summary>
    /// <param name="entity">要删除的菜单实体。</param>
    /// <returns>受影响的行数。</returns>
    public async Task<int> DeleteAsync(MenuBean entity)
    {
        var menuToDeleteList =new List<MenuBean>();
        foreach (var item in entity.Children)
        {
            menuToDeleteList.Add(item);
            foreach (var menu in item.Children)
            {
                menuToDeleteList.Add(menu);
            }
        }
        menuToDeleteList.Add(entity);
        return await base.DeleteAsync( _mapper.Map<List<DbMenu>>(menuToDeleteList) );
    }



    public async Task<List<MenuBean>> AddAsync(List<MenuBean> entities)
    {
        var dbEntities = _mapper.Map<List<DbMenu>>(entities);
        var addedEntities = await base.AddAsync(dbEntities);
        return _mapper.Map<List<MenuBean>>(addedEntities);
    }

    /// <summary>
    /// 异步批量更新菜单。
    /// </summary>
    /// <param name="entities">要更新的菜单实体列表。</param>
    /// <returns>受影响的行数。</returns>
    public async Task<int> UpdateAsync(List<MenuBean> entities)
    {
        var dbEntities = _mapper.Map<List<DbMenu>>(entities);
        return await base.UpdateAsync(dbEntities);
    }


    /// <summary>
    /// 异步根据实体列表批量删除菜单。
    /// </summary>
    /// <param name="entities">要删除的菜单实体列表。</param>
    /// <returns>受影响的行数。</returns>
    public async Task<int> DeleteAsync(List<MenuBean> entities)
    {
        var deleteList = entities.SelectMany(c => c.Children).ToList();
        deleteList.AddRange(entities);
        var dbEntities = _mapper.Map<List<DbMenu>>(entities);
        return await base.DeleteAsync(dbEntities);
    }
}