using System.Collections.Generic;
using System.Linq;

namespace Myshipping.Core;

/// <summary>
/// 通用输入帮助类
/// </summary>
public class PageInputOrder
{
    /// <summary>
    /// 排序方式(默认降序)
    /// </summary>
    /// <returns></returns>
    public static string OrderBuilder(string SortField, bool descSort = true)
    {
        // 约定默认每张表都有Id排序
        var orderStr = descSort ? "Id Desc" : "Id Asc";

        // 排序是否可用-排序字段和排序顺序都为非空才启用排序            
        if (!string.IsNullOrEmpty(SortField))
        {
            orderStr = $"{SortField} {(descSort ? "Desc" : "Asc")}";
        }
        return orderStr;
    }

    /// <summary>
    /// 多列排序
    /// </summary>
    /// <param name="sortList"></param>
    /// <returns></returns>
    public static string MultiOrderBuilder(List<QuerySortModel> sortList)
    {
        string orderStr = null;

        // 约定默认每张表都有Id排序
        if (sortList == null || sortList.Count == 0)
        {
            orderStr = "Id Desc";
        }
        else
        {
            var lst = sortList.Select(x => $"{x.SortField} {(x.DescSort ? "Desc" : "Asc")}").ToList();
            orderStr = string.Join(",", lst);
        }


        return orderStr;
    }
}