using System.IO;
using ACadSharp.Entities;
using ACadSharp.IO;
using Rozpisky.Dxf;
using Rozpisky.Rendering;
using Xunit;

namespace Rozpisky.Tests;

/// <summary>
/// Oblique úhel textu (kurzíva náklonem, DXF group 51/50) – dřív se ignoroval a text
/// se kreslil vzpřímeně. „SUDOP BRNO" má v DXF group 51 = 15° a group 41 (width) = 0,7.
/// </summary>
public class ObliqueTesty
{
    [Fact]
    public void SudopBrno_TextNeseObliqueAWidthFactor()
    {
        var rec = new RecordingRenderer();
        new DxfTemplate(TestData.Logo("sudopBrno.dxf")).Replay(rec);

        var t = Assert.Single(rec.Texts);
        Assert.Equal("SUDOP BRNO", t.Text);
        Assert.Equal(15.0, t.Style.ObliqueDeg, 2); // DXF group 51 = 15.0
        Assert.Equal(0.7, t.WidthFactor, 3);
    }

    [Fact]
    public void OstatniLoga_MajiObliqueNula()
    {
        // Regrese: žádné jiné logo oblique nemá – nesmí se objevit nenulový sklon.
        foreach (var name in TestData.VsechnaLoga.Where(n => n != "sudopBrno.dxf"))
        {
            var rec = new RecordingRenderer();
            new DxfTemplate(TestData.Logo(name)).Replay(rec);
            Assert.All(rec.Texts, t => Assert.Equal(0, t.Style.ObliqueDeg));
        }
    }

    [Fact]
    public void DxfExport_ZachovaObliqueNaTextu()
    {
        var dxf = new DxfProfileRenderer();
        dxf.Layer("0", 0x000000, 0.25);
        dxf.Text(10, 20, "Zkouška", 2.5, style: new TextStyle("Arial", ObliqueDeg: 3));

        string path = Path.Combine(Path.GetTempPath(), $"rozpisky-oblique-{Guid.NewGuid():N}.dxf");
        try
        {
            DxfWriter.Write(path, dxf.Document, binary: false);
            var doc = DxfReader.Read(path);
            var t = Assert.Single(doc.Entities.OfType<TextEntity>());
            Assert.Equal(3.0 * Math.PI / 180.0, t.ObliqueAngle, 6);
        }
        finally
        {
            File.Delete(path);
        }
    }
}