using System;
using System.ComponentModel;
using System.Security.Authentication;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using SyncEngine.Configuration;
using SyncEngine.Sync;

namespace SyncEngine.Tests
{
    [TestClass]
    public class MySqlTlsConnectionStringTests
    {
        [TestMethod]
        public void MySqlConnectionString_PinsTls12AndPreferredSsl()
        {
            var options = new SyncOptions
            {
                MySqlHost = "db.example.com",
                MySqlPort = 3306,
                MySqlUser = "sync",
                MySqlPassword = "secret",
                MySqlDatabase = "annies_angels_shop"
            };

            var cs = options.MySqlConnectionString;

            StringAssert.Contains(cs, "SslMode=Preferred");
            StringAssert.Contains(cs, "TlsVersion=Tls12");
            StringAssert.Contains(cs, "Connection Timeout=30");
            StringAssert.Contains(cs, "Server=db.example.com");
            StringAssert.Contains(cs, "Database=annies_angels_shop");
        }
    }

    [TestClass]
    public class SyncErrorFormatterSslTests
    {
        [TestMethod]
        public void IsSslHandshakeFailure_SslAuthenticationMessage_ReturnsTrue()
        {
            var ex = new Exception("SSL Authentication Error",
                new AuthenticationException("A call to SSPI failed",
                    new Win32Exception("The function requested is not supported")));

            Assert.IsTrue(SyncErrorFormatter.IsSslHandshakeFailure(ex));
        }

        [TestMethod]
        public void IsSslHandshakeFailure_Unrelated_ReturnsFalse()
        {
            Assert.IsFalse(SyncErrorFormatter.IsSslHandshakeFailure(new Exception("timeout waiting for host")));
        }

        [TestMethod]
        public void Describe_SslAuthentication_MentionsTlsHandshakeNotTemporaryNetwork()
        {
            // Mimic MySqlConnector wrap: outer message + AuthenticationException + Win32Exception
            var ex = new Exception(
                "SSL Authentication Error",
                new AuthenticationException("A call to SSPI failed",
                    new Win32Exception("The function requested is not supported")));

            var message = SyncErrorFormatter.Describe(ex);

            StringAssert.Contains(message, "TLS handshake");
            StringAssert.Contains(message, "SBS 2011");
            Assert.IsFalse(
                message.IndexOf("Temporary MySQL connection failure", StringComparison.OrdinalIgnoreCase) >= 0,
                "SSL failures must not be described as temporary network failures. Got: " + message);
        }
    }
}