using Xunit;
using Svrnty.MCP.Gateway.Infrastructure.Transport;
using Svrnty.MCP.Gateway.Core.Models;

namespace Svrnty.MCP.Gateway.Infrastructure.Tests.Transport;

/// <summary>
/// Unit tests for transport factory logic.
/// Tests transport creation based on server configuration.
/// </summary>
public class TransportFactoryTests
{
    [Fact]
    public void StdioTransport_WithValidCommand_CreatesSuccessfully()
    {
        // Arrange & Act
        var transport = new StdioServerTransport("echo", new[] { "test" });

        // Assert
        Assert.NotNull(transport);
        Assert.False(transport.IsConnected);
    }

    [Fact]
    public void StdioTransport_WithEmptyArgs_CreatesSuccessfully()
    {
        // Arrange & Act
        var transport = new StdioServerTransport("ls", Array.Empty<string>());

        // Assert
        Assert.NotNull(transport);
    }

    [Fact]
    public void HttpTransport_WithValidUrl_CreatesSuccessfully()
    {
        // Arrange & Act
        var transport = new HttpServerTransport("http://localhost:8080");

        // Assert
        Assert.NotNull(transport);
        Assert.False(transport.IsConnected);
    }

    [Fact]
    public void HttpTransport_WithHttpsUrl_CreatesSuccessfully()
    {
        // Arrange & Act
        var transport = new HttpServerTransport("https://api.example.com");

        // Assert
        Assert.NotNull(transport);
    }

    [Fact]
    public void StdioTransport_WithNullArgs_UsesEmptyArray()
    {
        // Arrange & Act
        var transport = new StdioServerTransport("echo", null!);

        // Assert
        Assert.NotNull(transport);
    }

    [Theory]
    [InlineData("http://localhost:5000")]
    [InlineData("https://api.example.com:8443")]
    [InlineData("http://192.168.1.1:3000")]
    public void HttpTransport_WithVariousUrls_CreatesSuccessfully(string baseUrl)
    {
        // Arrange & Act
        var transport = new HttpServerTransport(baseUrl);

        // Assert
        Assert.NotNull(transport);
        Assert.False(transport.IsConnected);
    }

    [Theory]
    [InlineData("dotnet", "run")]
    [InlineData("python3", "server.py")]
    [InlineData("node", "index.js")]
    public void StdioTransport_WithVariousCommands_CreatesSuccessfully(string command, string arg)
    {
        // Arrange & Act
        var transport = new StdioServerTransport(command, new[] { arg });

        // Assert
        Assert.NotNull(transport);
    }

    [Fact]
    public void StdioTransport_Dispose_CanBeCalledMultipleTimes()
    {
        // Arrange
        var transport = new StdioServerTransport("echo", new[] { "test" });

        // Act & Assert - should not throw
        transport.Dispose();
        transport.Dispose();
    }

    [Fact]
    public void HttpTransport_Dispose_CanBeCalledMultipleTimes()
    {
        // Arrange
        var httpClient = new HttpClient();
        var transport = new HttpServerTransport("http://localhost:5000", httpClient);

        // Act & Assert - should not throw
        transport.Dispose();
        transport.Dispose();
    }

    [Fact]
    public void HttpTransport_WithCustomHttpClient_UsesProvidedClient()
    {
        // Arrange
        var customHttpClient = new HttpClient();
        customHttpClient.Timeout = TimeSpan.FromSeconds(5);

        // Act
        var transport = new HttpServerTransport("http://localhost:5000", customHttpClient);

        // Assert
        Assert.NotNull(transport);
    }
}