using Kompas.Mcp.Core.Documents;
using Kompas.Mcp.Core.Drawings;
using Kompas.Mcp.Core.Modeling;

namespace Kompas.Mcp.Tests.Integration;

/// <summary>Интеграция: ассоциативная привязка диаметрального/радиального размера к окружности вида
/// (BaseObject). Модель — цилиндр R10 (вид проецирует окружность).</summary>
[Trait("Category", "Integration")]
[Collection(KompasCollection.Name)]
public sealed class DrawingAssociativeDimensionTests : IntegrationTestBase
{
    private readonly DocumentService _docs;
    private readonly PartModeler _modeler;
    private readonly DrawingService _drawing;

    public DrawingAssociativeDimensionTests(KompasFixture fx) : base(fx)
    {
        _docs = new DocumentService(fx.Session, fx.Dispatcher);
        _modeler = new PartModeler(fx.Session, fx.Dispatcher);
        _drawing = new DrawingService(fx.Session, fx.Dispatcher);
    }

    private async Task<string> BuildAndSaveCylinderAsync()
    {
        var path = TestPaths.NewFile(".m3d");
        await _docs.CreateAsync(KompasDocumentType.Part);
        try
        {
            var s = await _modeler.OpenSketchAsync(BasePlane.XOY);
            await _modeler.AddCircleAsync(s, 0, 0, 10);
            await _modeler.CloseSketchAsync(s);
            await _modeler.ExtrudeAsync(s, depth: 20);
            await _modeler.RebuildAsync();
            await _docs.SaveAsAsync(path);
        }
        finally { await _docs.CloseAsync(save: false); }
        return path;
    }

    [Fact]
    public async Task Diametral_associative_reads_diameter_from_geometry()
    {
        var partFile = await BuildAndSaveCylinderAsync();
        await _docs.CreateAsync(KompasDocumentType.Drawing);
        try
        {
            var views = await _drawing.CreateStandardViewsAsync(partFile, 1.0, 100, 150);
            var target = views.ViewNumbers[0]; // вид с окружностью (спайк)

            var before = await _drawing.GetViewDiametralDimensionCountAsync(target);
            // Ключ radius=10.3 (в допуске 1.0 находит окружность R10). Ассоциативно → Ø=20 из геометрии,
            // а НЕ 2·10.3=20.6 → доказывает чтение значения из геометрии, а не из входа.
            var r = await _drawing.AddDiametralDimensionAsync(target, xc: 0, yc: 0, radius: 10.3,
                angleDeg: 45, associate: true);
            var after = await _drawing.GetViewDiametralDimensionCountAsync(target);

            Assert.Equal(target, r.ViewNumber);
            Assert.InRange(r.Value, 19.9, 20.1); // Ø=20 из геометрии (не 20.6)
            Assert.Equal(before + 1, after);
        }
        finally { await _docs.CloseAsync(save: false); }
    }

    [Fact]
    public async Task Radial_associative_reads_radius_from_geometry()
    {
        var partFile = await BuildAndSaveCylinderAsync();
        await _docs.CreateAsync(KompasDocumentType.Drawing);
        try
        {
            var views = await _drawing.CreateStandardViewsAsync(partFile, 1.0, 100, 150);
            var target = views.ViewNumbers[0];
            var r = await _drawing.AddRadialDimensionAsync(target, xc: 0, yc: 0, radius: 10.3,
                angleDeg: -45, associate: true);
            Assert.InRange(r.Value, 9.9, 10.1); // R=10 из геометрии (не 10.3)
        }
        finally { await _docs.CloseAsync(save: false); }
    }

    [Fact]
    public async Task Associative_no_circle_near_throws_and_no_orphan()
    {
        var partFile = await BuildAndSaveCylinderAsync();
        await _docs.CreateAsync(KompasDocumentType.Drawing);
        try
        {
            var views = await _drawing.CreateStandardViewsAsync(partFile, 1.0, 100, 150);
            var target = views.ViewNumbers[0];
            var before = await _drawing.GetViewDiametralDimensionCountAsync(target);
            // Ключ далеко от любой окружности → отбор бросит до Add (размер не создаётся).
            await Assert.ThrowsAsync<InvalidOperationException>(() =>
                _drawing.AddDiametralDimensionAsync(target, xc: 1000, yc: 1000, radius: 5,
                    angleDeg: 0, associate: true));
            var after = await _drawing.GetViewDiametralDimensionCountAsync(target);
            Assert.Equal(before, after); // нет «осиротевшего» размера
        }
        finally { await _docs.CloseAsync(save: false); }
    }

    [Fact]
    public async Task Free_diametral_path_unchanged()
    {
        var partFile = await BuildAndSaveCylinderAsync();
        await _docs.CreateAsync(KompasDocumentType.Drawing);
        try
        {
            var views = await _drawing.CreateStandardViewsAsync(partFile, 1.0, 100, 150);
            // associate=false (по умолчанию) — свободный размер: значение = 2·radius.
            var r = await _drawing.AddDiametralDimensionAsync(views.ViewNumbers[0], xc: 0, yc: 0,
                radius: 15, angleDeg: 0, associate: false);
            Assert.InRange(r.Value, 29.9, 30.1);
        }
        finally { await _docs.CloseAsync(save: false); }
    }

    [Fact]
    public async Task Free_radial_path_unchanged()
    {
        var partFile = await BuildAndSaveCylinderAsync();
        await _docs.CreateAsync(KompasDocumentType.Drawing);
        try
        {
            var views = await _drawing.CreateStandardViewsAsync(partFile, 1.0, 100, 150);
            var r = await _drawing.AddRadialDimensionAsync(views.ViewNumbers[0], xc: 0, yc: 0,
                radius: 12, angleDeg: 0, associate: false);
            Assert.InRange(r.Value, 11.9, 12.1);
        }
        finally { await _docs.CloseAsync(save: false); }
    }

    [Fact]
    public async Task Associative_no_views_throws()
    {
        await _docs.CreateAsync(KompasDocumentType.Drawing);
        try
        {
            await Assert.ThrowsAsync<InvalidOperationException>(() =>
                _drawing.AddDiametralDimensionAsync(0, xc: 0, yc: 0, radius: 10, angleDeg: 0, associate: true));
        }
        finally { await _docs.CloseAsync(save: false); }
    }
}