// -----------------------------------------------------------------------------
// RateLimitRule.cs
// Sprint: SPRINT_1200_001_003_router_rate_limiting_rule_stacking
// Task: 3.1 - Extend Configuration for Rule Arrays
// Description: Single rate limit rule definition (window + max requests)
// -----------------------------------------------------------------------------

using Microsoft.Extensions.Configuration;

namespace StellaOps.Router.Gateway.RateLimit;

/// <summary>
/// A single rate limit rule (window + max requests).
/// </summary>
public sealed class RateLimitRule
{
    [ConfigurationKeyName("per_seconds")]
    public int PerSeconds { get; set; }

    [ConfigurationKeyName("max_requests")]
    public int MaxRequests { get; set; }

    [ConfigurationKeyName("name")]
    public string? Name { get; set; }

    public void Validate(string path)
    {
        if (PerSeconds <= 0)
            throw new ArgumentException($"{path}: per_seconds must be > 0");

        if (MaxRequests <= 0)
            throw new ArgumentException($"{path}: max_requests must be > 0");
    }
}