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

namespace Svrnty.MCP.Gateway.Core.Tests.Models;

/// <summary>
/// Unit tests for RoutingContext model following TDD approach.
/// Tests routing metadata.
/// </summary>
public class RoutingContextTests
{
    [Fact]
    public void RoutingContext_WithToolName_CreatesSuccessfully()
    {
        // Arrange & Act
        var context = new RoutingContext
        {
            ToolName = "search_codex",
            ClientId = "web-client-123"
        };

        // Assert
        Assert.Equal("search_codex", context.ToolName);
        Assert.Equal("web-client-123", context.ClientId);
        Assert.Null(context.Headers);
        Assert.Null(context.Metadata);
    }

    [Fact]
    public void RoutingContext_WithHeaders_StoresCorrectly()
    {
        // Arrange & Act
        var context = new RoutingContext
        {
            ToolName = "get_document",
            Headers = new Dictionary<string, string>
            {
                { "Authorization", "Bearer token123" },
                { "X-Client-Version", "1.0" }
            }
        };

        // Assert
        Assert.NotNull(context.Headers);
        Assert.Equal(2, context.Headers.Count);
        Assert.Equal("Bearer token123", context.Headers["Authorization"]);
    }

    [Fact]
    public void RoutingContext_WithMetadata_StoresCorrectly()
    {
        // Arrange & Act
        var context = new RoutingContext
        {
            Metadata = new Dictionary<string, object>
            {
                { "priority", 5 },
                { "timeout", TimeSpan.FromSeconds(30) },
                { "retry", true }
            }
        };

        // Assert
        Assert.NotNull(context.Metadata);
        Assert.Equal(5, context.Metadata["priority"]);
        Assert.Equal(TimeSpan.FromSeconds(30), context.Metadata["timeout"]);
        Assert.True((bool)context.Metadata["retry"]);
    }

    [Fact]
    public void RoutingContext_AllNullable_AllowsNullValues()
    {
        // Arrange & Act
        var context = new RoutingContext();

        // Assert
        Assert.Null(context.ToolName);
        Assert.Null(context.ClientId);
        Assert.Null(context.Headers);
        Assert.Null(context.Metadata);
    }
}