using System.Globalization;

namespace QuikDawEditor;

public partial class PlayGridHeader : UserControl
{
    public PlayGridHeader()
    {
        InitializeComponent();
    }

    FormattedText fText = null;
    Typeface typefaceMeasure = new Typeface(new FontFamily("Verdana"), FontStyles.Normal, FontWeights.Normal, FontStretches.Condensed);
    Typeface typefaceBeat = new Typeface(new FontFamily("Verdana"), FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);

    Pen linePenMeasure = new Pen(Brushes.White, 1);
    Pen linePenBeat = new Pen(Brushes.White, 0.6);
    SolidColorBrush NumbersBrush = Brushes.White;
    private double ContinueTo = 100 + 20;
    private double ContinueToB = 100 + 20;
    double beatsPerSecond { get { return BeatsPerMinute / 60; } }

    public void UpdateGridVisual()
    {
        ContinueTo = Math.Max(editingProject.projectEndPointMs / 1000 + 20, PixelsToMsec(this.ActualWidth) / 1000 / editingProject.ViewXZoomFac);
        ContinueToB = Math.Max(editingProject.projectEndPointMs / 1000 + 20, PixelsToMsec(this.ActualWidth) / 1000 / editingProject.ViewXZoomFac) * beatsPerSecond;

        this.InvalidateVisual();
    }

    protected override void OnRender(DrawingContext dc)
    {
        if (editingProject == null) return;


        switch (editingProject.IsTimePlayScale)
        {
            case true:
                //TimeScale

                double lineStart = this.ActualHeight / 2;
                double textY = this.ActualHeight / 2;
                int stride = editingProject.ViewXZoomFac < 0.6 ? 40 : (editingProject.ViewXZoomFac < 1 ? 20 : 10);
                int midStride = stride / 2;
                bool showMid = editingProject.ViewXZoomFac >= 1;
                bool showSecs = editingProject.ViewXZoomFac >= 3;
                bool showSecNos = editingProject.ViewXZoomFac >= 8;
                bool showSubSecs = editingProject.ViewXZoomFac > 30;

                for (int secNo = 1; secNo < ContinueTo; secNo++)
                {
                    double x = secNo * PixelsPerSecond * editingProject.ViewXZoomFac;

                    int oneBasedNo = secNo + 1;
                    string numString = (secNo + 1).ToString();
                    numString = TimeSpan.FromSeconds(secNo + 1).ToString().Substring(3, 5);

                    if (oneBasedNo % stride == 0)
                    {
                        textY = 0;
                        dc.DrawLine(linePenMeasure, new Point(x, 0), new Point(x, this.ActualHeight));
                        fText = new FormattedText(numString, CultureInfo.InvariantCulture, FlowDirection.LeftToRight, typefaceMeasure, 9, NumbersBrush, VisualTreeHelper.GetDpi(this).PixelsPerDip);
                        dc.DrawText(fText, new Point(x + 1, textY));
                    }
                    else
                    {
                        if (showMid)
                        {
                            if (oneBasedNo % midStride == 0)
                            {
                                textY = this.ActualHeight / 2 - 1;
                                fText = new FormattedText(numString, CultureInfo.InvariantCulture, FlowDirection.LeftToRight, typefaceBeat, 8, NumbersBrush, VisualTreeHelper.GetDpi(this).PixelsPerDip);
                                dc.DrawText(fText, new Point(x + 1, textY));
                                lineStart = this.ActualHeight / 2.5;
                                dc.DrawLine(linePenBeat, new Point(x, lineStart), new Point(x, this.ActualHeight));
                            }
                        }

                        if (showSecs)
                        {
                            lineStart = this.ActualHeight / 1.5;
                            dc.DrawLine(linePenBeat, new Point(x, lineStart), new Point(x, this.ActualHeight));
                        }
                        if (showSecNos)
                        {
                            textY = this.ActualHeight / 2 - 1;
                            fText = new FormattedText(numString, CultureInfo.InvariantCulture, FlowDirection.LeftToRight, typefaceBeat, 8, NumbersBrush, VisualTreeHelper.GetDpi(this).PixelsPerDip);
                            dc.DrawText(fText, new Point(x + 1, textY));
                        }

                    }

                    if (showSubSecs)
                    {
                        for (int i = 0; i < 10; i++)
                        {
                            lineStart = this.ActualHeight / 1.5;
                            double subxunit = PixelsPerSecond * editingProject.ViewXZoomFac / 10;
                            lineStart = this.ActualHeight / 1.5;
                            dc.DrawLine(linePenBeat, new Point(x + subxunit * i, lineStart), new Point(x + subxunit * i, this.ActualHeight));
                        }
                    }
                }

                break;


            case false:
                //BeatScale
                int measureStride = editingProject.ViewXZoomFac < 0.6 ? 16 : (editingProject.ViewXZoomFac < 1 ? 8 : editingProject.BeatsPerMeasure);
                double lineHeight = this.ActualHeight;
                double lineStartB = 0;
                double textYB = 0;
                bool showBeats = editingProject.ViewXZoomFac >= 4;

                string numStringB = "";

                for (int beatNo = 1; beatNo < ContinueToB; beatNo++)
                {
                    double x = MsecToPixelsZoomed((double)beatNo * MillisecondsPerBeat);

                    if (beatNo % measureStride == 0)
                    {
                        lineHeight = this.ActualHeight;
                        textYB = 0;
                        numStringB = Math.Truncate(beatNo / (decimal)editingProject.BeatsPerMeasure + 1).ToString();
                        dc.DrawLine(linePenMeasure, new Point(x, 0), new Point(x, lineHeight));
                        fText = new FormattedText(numStringB, CultureInfo.InvariantCulture, FlowDirection.LeftToRight, typefaceMeasure, 9, NumbersBrush, VisualTreeHelper.GetDpi(this).PixelsPerDip);
                        dc.DrawText(fText, new Point(x + 1, textYB));
                    }
                    else
                    {
                        if (showBeats)
                        {
                            textYB = this.ActualHeight / 2 - 1;
                            lineStartB = this.ActualHeight / 2;
                            numStringB = ((beatNo % measureStride) + 1).ToString();
                            dc.DrawLine(linePenBeat, new Point(x, lineStartB), new Point(x, this.ActualHeight));
                            fText = new FormattedText(numStringB, CultureInfo.InvariantCulture, FlowDirection.LeftToRight, typefaceBeat, 8, NumbersBrush, VisualTreeHelper.GetDpi(this).PixelsPerDip);
                            dc.DrawText(fText, new Point(x, textYB));
                        }

                    }

                }

                break;

        }
    }



}