namespace Backend.DatabaseHandler; public sealed class AlertRecord { public long Id { get; set; } public string Username { get; set; } = string.Empty; public string Symbol { get; set; } = string.Empty; public string AlertType { get; set; } = string.Empty; public string Parameters { get; set; } = "{}"; public string LastState { get; set; } = "{}"; public bool IsTriggered { get; set; } public DateTime CreatedAt { get; set; } = DateTime.UtcNow; }