using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace QuikDawEditor;

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

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

        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 showSubSecs = editingProject.ViewXZoomFac > 30;

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

            int oneBasedNo = secNo + 1;

            if (oneBasedNo % stride == 0)
            {
                textY = 0;
                dc.DrawLine(linePenMeasure, new Point(x, 0), new Point(x, this.ActualHeight));
            }
            else
            {
                if (showMid)
                {
                    if (oneBasedNo % midStride == 0)
                    {
                        textY = Math.Floor(this.ActualHeight / 2 - 1);
                        lineStart = Math.Floor(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 (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));
                }
            }
        }


    }
}