@page "/labs"
@using Microsoft.EntityFrameworkCore

<PageTitle>Labs</PageTitle>

<h1>Labs</h1>

<a href="/labs/add" class="btn btn-primary">Add new</a>

<table class="table table-striped">
    <thead>
    <tr>
        <td>Name</td>
        <td>Location</td>
    </tr>
    </thead>
    <tbody>
    @foreach (var lab in Labs)
    {
        <tr>
            <td>
                <a href="@($"/labs/{lab.Id.Value}")">@lab.Name</a>
            </td>
            <td>
                @if (!string.IsNullOrEmpty(lab.AddressCity))
                {
                    <span>@lab.AddressCity</span>@(", ")
                }
                <span>@lab.Country.Name</span>
            </td>
        </tr>
    }
    </tbody>
</table>

<div>
    <ul class="pagination">
        @for (var i = 1; i <= TotalPages; i++)
        {
            var p = i;
            <li class="page-item @(i == CurrentPage ? "active" : "")">
                <a class="page-link" href="@($"/labs?page={p}")">@p</a>
            </li>
        }
    </ul>
</div>

@code {

    [Inject]
    public IDbContextFactory<AppDbContext> DbContextFactory { get; set; } = null!;

    [Parameter]
    [SupplyParameterFromQuery(Name = "page")]
    public int? CurrentPage { get; set; }

    private int Count { get; set; }
    private int PageSize { get; set; } = 10;

    private int TotalPages => (int)Math.Ceiling(decimal.Divide(Count, PageSize));


    private List<Lab> Labs { get; set; } = new();


    private void Load()
    {
        using var ctx = DbContextFactory.CreateDbContext();

        Count = ctx.Set<Lab>().Count();

        var page = CurrentPage ?? 1;

        Labs = ctx.Set<Lab>()
            .OrderBy(x => x.Id)
            .Skip((page - 1) * PageSize)
            .Take(PageSize)
            .Include(x => x.Country)
            .ToList();
    }

    protected override void OnInitialized()
    {
        base.OnInitialized();
        Load();
    }

    protected override void OnParametersSet()
    {
        base.OnParametersSet();
        Load();
    }

}