using System.ComponentModel.DataAnnotations;

namespace Lagerbestand.Models;

/// <summary>
/// Type of comment (chat message or system activity)
/// </summary>
public enum KanbanCommentType
{
    Chat = 0,
    Activity = 1
}

/// <summary>
/// Represents a chat message or activity log entry on a Kanban task
/// </summary>
public class KanbanTaskComment
{
    public Guid Id { get; set; } = Guid.NewGuid();

    public Guid TaskId { get; set; }

    /// <summary>
    /// User who created the comment (null for system activities)
    /// </summary>
    public Guid? UserId { get; set; }

    [Required]
    public string Content { get; set; } = string.Empty;

    /// <summary>
    /// Whether this is a chat message or system activity
    /// </summary>
    public KanbanCommentType CommentType { get; set; } = KanbanCommentType.Chat;

    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;

    // Navigation properties
    public virtual KanbanTask? Task { get; set; }
    public virtual AppUser? User { get; set; }

    // Computed properties
    public bool IsActivity => CommentType == KanbanCommentType.Activity;
    public bool IsChat => CommentType == KanbanCommentType.Chat;
}