using System.Diagnostics;
using Xunit;

namespace VRCAuthProxy.Tests.Helpers
{
    /// <summary>
    /// Collection definition for Redis tests
    /// </summary>
    [CollectionDefinition("Redis")]
    public class RedisCollection : ICollectionFixture<RedisFixture>
    {
        // This class has no code, and is never created. Its purpose is simply
        // to be the place to apply [CollectionDefinition] and all the
        // ICollectionFixture<> interfaces.
    }
    
    /// <summary>
    /// Redis test fixture that ensures a Redis instance is available for tests
    /// </summary>
    public class RedisFixture : IDisposable
    {
        private Process? _redisProcess; // Kept for future implementation where we might start Redis
        private bool _disposedValue;
        
        public RedisFixture()
        {
            // For CI environments, this would start Redis using Docker
            // For local development, we assume Redis is already running
            
            // Check if Redis is available
            if (!IsRedisRunning())
            {
                // In a real implementation, we could start Redis here if needed
                Console.WriteLine("Warning: Redis is not running. Redis integration tests will be skipped.");
            }
        }
        
        /// <summary>
        /// Check if Redis is available on localhost:6379
        /// </summary>
        private bool IsRedisRunning()
        {
            try
            {
                using var client = new System.Net.Sockets.TcpClient();
                var result = client.BeginConnect("localhost", 6379, null, null);
                var success = result.AsyncWaitHandle.WaitOne(TimeSpan.FromSeconds(1));
                client.EndConnect(result);
                return success;
            }
            catch
            {
                return false;
            }
        }
        
        protected virtual void Dispose(bool disposing)
        {
            if (!_disposedValue)
            {
                if (disposing)
                {
                    // Stop Redis if we started it
                    _redisProcess?.Kill();
                    _redisProcess?.Dispose();
                }
                
                _disposedValue = true;
            }
        }
        
        public void Dispose()
        {
            Dispose(disposing: true);
            GC.SuppressFinalize(this);
        }
    }
}