using FlexJobApi.Core;
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using Furion.DatabaseAccessor;
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using Mapster;
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using MediatR;
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using Microsoft.EntityFrameworkCore;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace FlexJobApi.UserServer.Application
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{
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/// <summary>
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/// 查询菜单列表
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/// </summary>
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public class GetMenusQueryHandler(
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IRepository<Menu> rep)
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: IRequestHandler<GetMenusQuery, List<GetMenusQueryResultItem>>
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{
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private readonly IRepository<Menu> rep = rep;
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/// <inheritdoc/>
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public async Task<List<GetMenusQueryResultItem>> Handle(GetMenusQuery request, CancellationToken cancellationToken)
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{
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var q = rep.AsQueryable().AsNoTracking()
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.OrderBy(it => it.Sort).ThenBy(it => it.CreatedTime)
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.Where(it => it.UserType == request.UserType && it.ClientType == request.ClientType)
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.Where(it => it.Type == EnumMenuType.Menu || it.Type == EnumMenuType.Page || it.Type == EnumMenuType.Modal);
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var all = await q.ProjectToType<GetMenusQueryResultItem>().ToListAsync();
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var models = all.Where(it => it.ParentId == null).ToList();
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var roleMenuIds =
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request.RoleId.HasValue
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? rep.Change<RoleMenu>().Where(it => it.RoleId == request.RoleId).DistinctSelect(it => it.MenuId)
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: [];
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LoopChildrens(models, all, roleMenuIds);
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return models;
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}
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/// <summary>
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/// 递归赋值下级菜单
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/// </summary>
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/// <param name="models"></param>
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/// <param name="all"></param>
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/// <param name="roleMenuIds"></param>
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private void LoopChildrens(List<GetMenusQueryResultItem> models, List<GetMenusQueryResultItem> all, List<Guid> roleMenuIds)
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{
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foreach (var item in models)
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{
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item.IsChecked = roleMenuIds.Contains(item.Id);
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item.Children = all.Where(it => it.ParentId == item.Id).ToList();
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if (item.Children.IsNotNull())
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{
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LoopChildrens(item.Children, all, roleMenuIds);
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}
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}
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}
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}
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}
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