using Avalonia;
using LehrerApp.TemplateDesigner;
using Xunit;

namespace LehrerApp.TemplateDesigner.Tests;

public sealed class OverlayEditorTests
{
    [Fact]
    public void Koordinatenabbildung_BeruecksichtigtLetterboxUndIstUmkehrbar()
    {
        var displayedPage = OverlayCoordinateMapper.PageRect(new Size(1000, 1000), 210, 297);
        var dslRect = new Rect(20, 30, 80, 45);

        var controlRect = OverlayCoordinateMapper.ToControl(dslRect, displayedPage, 210, 297);
        var mappedTopLeft = OverlayCoordinateMapper.ToDsl(controlRect.TopLeft, displayedPage, 210, 297);
        var mappedBottomRight = OverlayCoordinateMapper.ToDsl(controlRect.BottomRight, displayedPage, 210, 297);

        Assert.Equal(1000, displayedPage.Height, 6);
        Assert.True(displayedPage.X > 140);
        Assert.Equal(dslRect.X, mappedTopLeft.X, 6);
        Assert.Equal(dslRect.Y, mappedTopLeft.Y, 6);
        Assert.Equal(dslRect.Right, mappedBottomRight.X, 6);
        Assert.Equal(dslRect.Bottom, mappedBottomRight.Y, 6);
    }

    [Fact]
    public void Messbereich_WirdInElementformularUebernommen()
    {
        var viewModel = new DesignerViewModel();

        viewModel.ApplyMeasurement(new(12.5, 34.25, 80, 22.5, true));

        Assert.Equal("12.5", viewModel.NewX);
        Assert.Equal("34.25", viewModel.NewY);
        Assert.Equal("80", viewModel.NewWidth);
        Assert.Equal("22.5", viewModel.NewHeight);
    }

    [Fact]
    public void TextVerschieben_ErhaeltInhaltUndAttribute()
    {
        var viewModel = new DesignerViewModel
        { LayoutSource = "PAGE 210 297 mm\nTEXT 20 30 \"Hallo Welt\" size=10 bold=true" };

        viewModel.ApplyElementGeometry(new(2, "TEXT", 25.5, 40, 70, 5));

        Assert.Contains("TEXT 25.5 40 \"Hallo Welt\" size=10 bold=true", viewModel.LayoutSource);
    }

    [Fact]
    public void SkaliertesBildResize_RechnetEffektivenRahmenZurueckUndErhaeltScale()
    {
        var viewModel = new DesignerViewModel
        { LayoutSource = "PAGE 210 297 mm\nIMG logo.png 10 15 30 12 scale=50%" };

        viewModel.ApplyElementGeometry(new(2, "IMG", 20, 25, 30, 12));

        Assert.Contains("IMG logo.png 20 25 60 24 scale=50%", viewModel.LayoutSource);
    }

    [Fact]
    public void DslSeitengroesse_SteuertOverlayAuchBeiAbweichendemManifestformular()
    {
        var viewModel = new DesignerViewModel { PageWidth = 210, PageHeight = 297 };

        viewModel.LayoutSource = "PAGE 200 200 pt";

        Assert.Equal(200, viewModel.OverlayPageWidth);
        Assert.Equal(200, viewModel.OverlayPageHeight);
        Assert.Equal("pt", viewModel.OverlayPageUnit);
    }
}