using System;
using System.Collections.Generic;

namespace Svrnty.CQRS.Events.Abstractions.Configuration;

/// <summary>
/// Configuration for stream access control and quotas.
/// </summary>
public class AccessControlConfiguration
{
    /// <summary>
    /// Gets or sets whether anyone can read from this stream.
    /// </summary>
    public bool PublicRead { get; set; }

    /// <summary>
    /// Gets or sets whether anyone can write to this stream.
    /// </summary>
    public bool PublicWrite { get; set; }

    /// <summary>
    /// Gets or sets the list of users/services allowed to read from this stream.
    /// </summary>
    public List<string>? AllowedReaders { get; set; }

    /// <summary>
    /// Gets or sets the list of users/services allowed to write to this stream.
    /// </summary>
    public List<string>? AllowedWriters { get; set; }

    /// <summary>
    /// Gets or sets the maximum number of consumer groups allowed for this stream.
    /// </summary>
    public int? MaxConsumerGroups { get; set; }

    /// <summary>
    /// Gets or sets the maximum events per second rate limit for this stream.
    /// </summary>
    public long? MaxEventsPerSecond { get; set; }

    /// <summary>
    /// Validates the access control configuration.
    /// </summary>
    /// <exception cref="ArgumentException">Thrown when configuration is invalid.</exception>
    public void Validate()
    {
        if (MaxConsumerGroups.HasValue && MaxConsumerGroups.Value < 0)
            throw new ArgumentException("MaxConsumerGroups cannot be negative", nameof(MaxConsumerGroups));

        if (MaxEventsPerSecond.HasValue && MaxEventsPerSecond.Value <= 0)
            throw new ArgumentException("MaxEventsPerSecond must be positive", nameof(MaxEventsPerSecond));
    }
}