predavanja/MVC-SimpleCRUD-Layered/MVC-SimpleCRUD-Layered.Application/Models/PagingInfo.cs

namespace MVC_SimpleCRUD_Layered.Application.Models;

public class PagingInfo
{
    public int TotalItemsCount { get; set; }

    public int FilteredItemsCount { get; set; }

    public int ItemsPerPage { get; set; }

    public int CurrentPage { get; set; }

    public string? Sorts { get; set; }

    public string? SearchText { get; set; }

    public int TotalPages => Math.Max(1, (int)Math.Ceiling((decimal)FilteredItemsCount / ItemsPerPage));

    public bool IsFiltered => !string.IsNullOrWhiteSpace(SearchText);

    public string ToggleSort(string propertyName)
    {
        return string.Equals(Sorts, propertyName, StringComparison.OrdinalIgnoreCase)
            ? $"-{propertyName}"
            : propertyName;
    }

    public bool IsSortedBy(string propertyName)
    {
        return string.Equals(Sorts?.TrimStart('-'), propertyName, StringComparison.OrdinalIgnoreCase);
    }

    public bool IsDescending()
    {
        return Sorts?.StartsWith("-", StringComparison.Ordinal) == true;
    }
}