using Elternbeirat.Contracts;
using Elternbeirat.PocketBase;
using Microsoft.AspNetCore.Components;

namespace Elternbeirat.Web.Features.Events;

public partial class EventList
{
    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load events from PocketBase.")]
    private static partial void LogLoadFailed(ILogger logger, Exception exception);

    [Inject]
    private PocketBaseClient PocketBase { get; set; } = default!;

    [Inject]
    private ILogger<EventList> Logger { get; set; } = default!;

    private IReadOnlyList<Event> _upcoming = [];
    private IReadOnlyList<Event> _past = [];

    protected override async Task OnInitializedAsync()
    {
        IReadOnlyList<Event> events;
        try
        {
            events = await PocketBase.GetEventsAsync();
        }
        catch (HttpRequestException ex)
        {
            // Source unreachable -> show empty sections instead of a 500. The page
            // stays up; the "keine Termine" note is rendered.
            LogLoadFailed(Logger, ex);
            return;
        }

        // Split into upcoming and past by date, so an event earlier today still
        // counts as upcoming. Upcoming earliest first, past most recent first.
        var today = DateOnly.FromDateTime(DateTime.Today);
        _upcoming = events
            .Where(e => DateOnly.FromDateTime(e.Start) >= today)
            .OrderBy(e => e.Start)
            .ToList();
        _past = events
            .Where(e => DateOnly.FromDateTime(e.Start) < today)
            .OrderByDescending(e => e.Start)
            .ToList();
    }
}