using Heron.MudCalendar;

namespace WebApp.Models;

/// <summary>
/// Type discriminator for calendar item types.
/// </summary>
public enum CalendarItemType
{
    Event,
    Meeting
}

/// <summary>
/// Wrapper class for calendar items that can hold either a CalendarEventItem or CalendarMeetingItem.
/// This allows MudCalendar to display mixed item types while maintaining type safety.
/// </summary>
public class CalendarItemWrapper : CalendarItem
{
    /// <summary>
    /// Gets the type of calendar item this wrapper contains.
    /// </summary>
    public CalendarItemType ItemType { get; private set; }

    /// <summary>
    /// Gets the wrapped CalendarEventItem if ItemType is Event, otherwise null.
    /// </summary>
    public CalendarEventItem? EventItem { get; private set; }

    /// <summary>
    /// Gets the wrapped CalendarMeetingItem if ItemType is Meeting, otherwise null.
    /// </summary>
    public CalendarMeetingItem? MeetingItem { get; private set; }

    /// <summary>
    /// Parameterless constructor required by Heron.MudCalendar component.
    /// </summary>
    public CalendarItemWrapper()
    {
        // Initialize base class properties to avoid null reference issues
        Text = string.Empty;
        Start = DateTime.MinValue;
        End = DateTime.MinValue;
    }

    /// <summary>
    /// Creates a wrapper for a CalendarEventItem.
    /// </summary>
    public CalendarItemWrapper(CalendarEventItem eventItem)
    {
        ItemType = CalendarItemType.Event;
        EventItem = eventItem;
        // Delegate properties to wrapped item
        Text = eventItem.Text;
        Start = eventItem.Start;
        End = eventItem.End;
    }

    /// <summary>
    /// Creates a wrapper for a CalendarMeetingItem.
    /// </summary>
    public CalendarItemWrapper(CalendarMeetingItem meetingItem)
    {
        ItemType = CalendarItemType.Meeting;
        MeetingItem = meetingItem;
        // Delegate properties to wrapped item
        Text = meetingItem.Text;
        Start = meetingItem.Start;
        End = meetingItem.End;
    }
}