using System.ComponentModel.DataAnnotations;

namespace ASTRAIN.Shared.Models;

/// <summary>
/// Represents an application user identified by an 8-character key.
/// </summary>
public class User
{
    /// <summary>
    /// Gets or sets the unique 8-character user identifier.
    /// </summary>
    [Key]
    [MaxLength(8)]
    public string Id { get; set; } = string.Empty;

    /// <summary>
    /// Gets or sets the creation timestamp in UTC.
    /// </summary>
    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;

    /// <summary>
    /// Gets or sets the exercises owned by this user.
    /// </summary>
    public List<Exercise> Exercises { get; set; } = new();

    /// <summary>
    /// Gets or sets the routines owned by this user.
    /// </summary>
    public List<Routine> Routines { get; set; } = new();
}