using System;

namespace Svrnty.CQRS.Events.ConsumerGroups.Monitoring;

/// <summary>
/// Configuration options for the consumer health monitor background service.
/// </summary>
public class ConsumerHealthMonitorOptions
{
    /// <summary>
    /// How often to check for stale consumers.
    /// Default: 30 seconds
    /// </summary>
    public TimeSpan CleanupInterval { get; set; } = TimeSpan.FromSeconds(30);

    /// <summary>
    /// How long a consumer can be inactive before being considered stale.
    /// This should be longer than the heartbeat interval to avoid false positives.
    /// Default: 60 seconds
    /// </summary>
    public TimeSpan SessionTimeout { get; set; } = TimeSpan.FromSeconds(60);

    /// <summary>
    /// Whether the health monitor is enabled.
    /// Default: true
    /// </summary>
    public bool Enabled { get; set; } = true;

    /// <summary>
    /// Validates the configuration.
    /// </summary>
    public void Validate()
    {
        if (CleanupInterval <= TimeSpan.Zero)
            throw new ArgumentException("CleanupInterval must be positive", nameof(CleanupInterval));

        if (SessionTimeout <= TimeSpan.Zero)
            throw new ArgumentException("SessionTimeout must be positive", nameof(SessionTimeout));

        if (SessionTimeout < TimeSpan.FromSeconds(10))
            throw new ArgumentException("SessionTimeout should be at least 10 seconds to avoid false positives", nameof(SessionTimeout));
    }
}