using System.ComponentModel.DataAnnotations;

namespace FrameProcessor.Configuration;

/// <summary>
/// Bound from the <c>Mqtt</c> section of <c>appsettings.json</c>. See SPEC.md §6.1.
/// </summary>
public sealed class MqttOptions
{
    public const string SectionName = "Mqtt";

    [Required(AllowEmptyStrings = false)]
    public string Host { get; set; } = string.Empty;

    [Range(1, 65535)]
    public int Port { get; set; } = 1883;

    [Required(AllowEmptyStrings = false)]
    public string ClientId { get; set; } = string.Empty;

    public string? Username { get; set; }

    public string? Password { get; set; }

    public bool UseTls { get; set; }

    [Required(AllowEmptyStrings = false)]
    public string BaseTopic { get; set; } = "frames";

    [Range(0, 2)]
    public int PublishQos { get; set; } = 1;

    [MinLength(1)]
    public int[] RetryBackoffSeconds { get; set; } = Array.Empty<int>();
}