@model BasePagingViewModel

<nav aria-label="..." class="w-100">
    @if (Model.Total != 0)
    {
        <ul class="pagination float-left">
            <li class="page-item @(Model.Skip == 0 ? "disabled" : null)">
                <a class="page-link" tabindex="-1" href="@NavigatePages(-1, Model.Count)">&laquo;</a>
            </li>
            <li class="page-item disabled">
                @if (Model.Total <= Model.Count)
                {
                    <span class="page-link">
                        1–@Model.Total
                    </span>
                }
                else
                {
                    <span class="page-link">
                        @(Model.Skip + 1)–@(Model.Skip + Model.Count), Total: @Model.Total
                    </span>
                }
            </li>
            <li class="page-item @(Model.Total > (Model.Skip + Model.Count) ? null : "disabled")">
                <a class="page-link" href="@NavigatePages(1, Model.Count)">&raquo;</a>
            </li>
        </ul>
    }
    <ul class="pagination float-right">
        <li class="page-item disabled">
            <span class="page-link">Page Size:</span>
        </li>
        <li class="page-item @(Model.Count == 50 ? "active" : null)">
            <a class="page-link" href="@NavigatePages(0, 50)">50</a>
        </li>
        <li class="page-item @(Model.Count == 100 ? "active" : null)">
            <a class="page-link" href="@NavigatePages(0, 100)">100</a>
        </li>
        <li class="page-item @(Model.Count == 250 ? "active" : null)">
            <a class="page-link" href="@NavigatePages(0, 250)">250</a>
        </li>
        <li class="page-item @(Model.Count == 500 ? "active" : null)">
            <a class="page-link" href="@NavigatePages(0, 500)">500</a>
        </li>
    </ul>
</nav>
@{
    string NavigatePages(int prevNext, int count)
    {
        var skip = Model.Skip;
        if (prevNext == -1)
        {
            skip = Math.Max(0, Model.Skip - Model.Count);
        }
        else if (prevNext == 1)
        {
            skip = Model.Skip + count;
        }

        var act = Url.Action(null, new
        {
            searchTerm = Model.SearchTerm,
            timezoneOffset = Model.TimezoneOffset,
            skip = skip,
            count = count,
        });

        return act;
    }
}