using System;
using System.Collections.Generic;

namespace LCU.Library.Internal.DocumentIngestorModels.Models.Pagination
{
    public class PagedResponse<T> where T: class
    {
        public PagedResponse() { }
        public PagedResponse(PagedResult<T> pagedResult, Filter filter)
        {
            TotalItems = pagedResult.Total;
            Items = pagedResult.Items;
            TotalPages = pagedResult.Total == 0 ? 1 : (int)Math.Ceiling((decimal)pagedResult.Total / filter.Limit);
            CurrentPage = filter.Page > this.TotalPages ? this.TotalPages : filter.Page;

            if (pagedResult.Total > (filter.Page * filter.Limit))
            {
                NextPage = filter.Page + 1; 
            }
            if (filter.Page > 1)
            {
                PreviousPage = filter.Page - 1; 
            }
        }
        public IEnumerable<T> Items { get; set; }
        public int NextPage { get; set; }
        public int PreviousPage { get; set; }
        public int TotalItems { get; set; }
        public int CurrentPage { get; set; }
        public int TotalPages { get; set; }
    }
}