using System.Text.Json;
using OpenHarbor.MCP.Client.Core.Models;
using Xunit;

namespace OpenHarbor.MCP.Client.Core.Tests.Models;

/// <summary>
/// Unit tests for McpTool model.
/// Tests tool creation and property validation.
/// </summary>
public class McpToolTests
{
    [Fact]
    public void Constructor_WithRequiredProperties_CreatesTool()
    {
        // Arrange & Act
        var tool = new McpTool
        {
            Name = "test_tool",
            Description = "Test tool description"
        };

        // Assert
        Assert.Equal("test_tool", tool.Name);
        Assert.Equal("Test tool description", tool.Description);
        Assert.Null(tool.Schema);
    }

    [Fact]
    public void Constructor_WithSchema_StoresSchema()
    {
        // Arrange
        var schema = JsonDocument.Parse("""
        {
            "type": "object",
            "properties": {
                "param1": {"type": "string"}
            }
        }
        """);

        // Act
        var tool = new McpTool
        {
            Name = "test_tool",
            Description = "Test description",
            Schema = schema
        };

        // Assert
        Assert.Equal("test_tool", tool.Name);
        Assert.NotNull(tool.Schema);
        Assert.Equal("object", tool.Schema.RootElement.GetProperty("type").GetString());
    }

    [Fact]
    public void Constructor_WithoutSchema_HasNullSchema()
    {
        // Arrange & Act
        var tool = new McpTool
        {
            Name = "simple_tool",
            Description = "Simple tool without parameters"
        };

        // Assert
        Assert.Null(tool.Schema);
    }
}