@page "/termine"
@using System.Globalization
@using Elternbeirat.Web.Services
@inject EventService EventService

<PageTitle>Termine</PageTitle>

<h1>Termine</h1>

<p class="intro">
    Alle Termine des Elternbeirats auf einen Blick. Sie können den Kalender auch
    <a href="/termine.ics">abonnieren</a> und in Ihrer Kalender-App automatisch
    aktuell halten.
</p>

<h2>Kommende Termine</h2>

@if (EventService.Upcoming.Count == 0)
{
    <p>Zurzeit sind keine Termine geplant.</p>
}
else
{
    <ul class="event-list">
        @foreach (var ev in EventService.Upcoming)
        {
            <li>
                <time datetime="@ev.Start.ToString("s")">@Format(ev)</time>
                <span class="event-title">@ev.Title</span>
                @if (!string.IsNullOrWhiteSpace(ev.Location))
                {
                    <span class="event-location">@ev.Location</span>
                }
                @if (!string.IsNullOrWhiteSpace(ev.Note))
                {
                    <p class="event-note">@ev.Note</p>
                }
            </li>
        }
    </ul>
}

@if (EventService.Past.Count > 0)
{
    <h2>Vergangene Termine</h2>
    <ul class="event-list event-list-past">
        @foreach (var ev in EventService.Past)
        {
            <li>
                <time datetime="@ev.Start.ToString("s")">@Format(ev)</time>
                <span class="event-title">@ev.Title</span>
                @if (!string.IsNullOrWhiteSpace(ev.Location))
                {
                    <span class="event-location">@ev.Location</span>
                }
            </li>
        }
    </ul>
}

@code {
    private static readonly CultureInfo _german = CultureInfo.GetCultureInfo("de-DE");

    // Formats the entry's date range for display: a single day, a date with a
    // time, or a span across days.
    private static string Format(Event ev)
    {
        var start = ev.HasTime
            ? ev.Start.ToString("dddd, d. MMMM yyyy, HH:mm", _german) + " Uhr"
            : ev.Start.ToString("dddd, d. MMMM yyyy", _german);

        if (ev.End is not { } end)
        {
            return start;
        }

        // Same day: append just the end time. Different days: append the full
        // end date.
        if (end.Date == ev.Start.Date)
        {
            return ev.HasTime
                ? start + "–" + end.ToString("HH:mm", _german) + " Uhr"
                : start;
        }

        var endText = ev.HasTime
            ? end.ToString("d. MMMM yyyy, HH:mm", _german) + " Uhr"
            : end.ToString("d. MMMM yyyy", _german);
        return start + " – " + endText;
    }
}