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>
    /// <param name="pageInput"></param>
    /// <param name="descSort">是否降序</param>
    /// <returns></returns>
    public static string OrderBuilder(PageInputBase pageInput, 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(pageInput.SortField) && !string.IsNullOrEmpty(pageInput.SortOrder))
        {
            orderStr = $"{pageInput.SortField} {(pageInput.SortOrder == pageInput.DescStr ? "Desc" : "Asc")}";
        }
        return orderStr;
    }
}