using Dlhis.Basic.Organization.Response;
using Dlhis.Entity.Basic.Entity;
using Kurisu.AspNetCore.DataAccess.SqlSugar.Services;
using Kurisu.AspNetCore.Utils.Extensions;

namespace Dlhis.Basic.Organization.Services.Implements;

public class DepartmentService : IDepartmentService
{
    private readonly IDbContext _dbContext;

    public DepartmentService(IDbContext dbContext)
    {
        _dbContext = dbContext;
    }

    public async Task<List<DepartmentTreeResponse>> GetTreeAsync()
    {
        var departments = await _dbContext.Queryable<DepartmentEntity>().Select<DepartmentTreeResponse>().ToListAsync();
        //00001000 一定是这个开头的
        var tops = departments.Where(x => x.PNo == "00001000").ToList();

        tops.ForEach(x => { RecursionGetNext(x, departments); });
        return tops;
    }


    public async Task<List<DepartmentTreeResponse>> GetNextListAsync(string nextNo)
    {
        return await _dbContext.Queryable<DepartmentEntity>()
            .WhereIF(nextNo.IsPresent(), x => x.PNo == nextNo)
            .WhereIF(nextNo.IsEmpty(), x => x.PNo == "00001000")
            .Select<DepartmentTreeResponse>()
            .ToListAsync();
    }

    //***************************************************** help methods ****************************************************************

    private static void RecursionGetNext(DepartmentTreeResponse current, List<DepartmentTreeResponse> data)
    {
        var next = data.Where(x => x.PNo == current.No).ToList();
        current.CurrentNext = next;
        foreach (var item in next)
        {
            RecursionGetNext(item, data);
        }
    }
}