using QuikDawEditor.MiscClasses;
using QuikDawEditor.EditingClasses;
using QuikDawEditor.Undo;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;
using static QuikDawEditor.EDITING.MiscMethods;
using static QuikDawEditor.EDITING.StaticProperties;

namespace QuikDawEditor.EDITING.PianoRollModel;

public partial class PianoRollModel 
{
    private static SolidColorBrush MeasureLineStrokeBrush = Brushes.White;
    double strokeThicknessFactor = 0.6;
    public ObservableCollection<Separator> HorizontalLines { get; set; } = new ObservableCollection<Separator>();


    //This gets drawn each time piano roll is zoomed...  need to optimize!
    internal void DrawMeasureLines()
    {

        GridMeasureNos.Clear();
        GridMeasureScaleLines.Clear();
        GridMeasureContentLines.Clear();

        //Draw beat lines
        int measure = 0;
        for (int msec = 0; msec <= myClip.ClipSourceLenMilliseconds; msec += (int)(MillisecondsPerBeat * editingProject.BeatsPerMeasure))
        {
            string MeasureNoString = (measure + 1).ToString();
            double x1 = MsecToPixelsGrid(msec);

            GridMeasureScaleLines.Add(new Line() { X1 = x1, X2 = x1, Y1 = 0, Y2 = PianoRollHeight, Stroke = MeasureLineStrokeBrush, StrokeThickness = WorkingGridXZoomFacReverse * strokeThicknessFactor });
            GridMeasureContentLines.Add(new Line() { X1 = x1, X2 = x1, Y1 = 0, Y2 = PianoRollHeight, Stroke = MeasureLineStrokeBrush, StrokeThickness = WorkingGridXZoomFacReverse * strokeThicknessFactor });
            GridMeasureNos.Add(new TextBlock() { Text = MeasureNoString, Foreground = MeasureLineStrokeBrush, Margin = new Thickness(x1 + 3, 0, 0, 0), FontWeight = FontWeights.Bold, FontSize = 16, LayoutTransform = new ScaleTransform(WorkingGridXZoomFacReverse, 1) });

            DoubleCollection strokeDA = null;
            double strokeThickness = strokeThicknessFactor;
            double resolution = 16;
            for (double sfor = 1; sfor <= resolution; sfor += 1)
            {
                x1 += measurePixels / resolution;

                if (sfor % resolution % 4 == 0)
                {
                    strokeThickness = WorkingGridXZoomFacReverse * strokeThicknessFactor;
                    strokeDA = null;
                    if (sfor % resolution != 0)
                        GridMeasureNos.Add(new TextBlock() { Text = ((int)(sfor % resolution / 4) + 1).ToString(), Foreground =MeasureLineStrokeBrush, Margin = new Thickness(x1 + 2, 6, 0, 0), FontSize = 11, LayoutTransform = new ScaleTransform(WorkingGridXZoomFacReverse, 1) });
                }
                else
                {
                    if (sfor % resolution % 2 == 0)
                    {
                        strokeDA = new DoubleCollection() { 0, 4 * WorkingGridXZoomFac, 6 * WorkingGridXZoomFac };
                        strokeThickness = 0.7 * strokeThicknessFactor * WorkingGridXZoomFacReverse;
                    }
                    else
                    {
                        strokeDA = new DoubleCollection() { 0, 3 * WorkingGridXZoomFac, 4 * WorkingGridXZoomFac };
                        strokeThickness = 0.5 * strokeThicknessFactor * WorkingGridXZoomFacReverse;
                    }
                }


                GridMeasureScaleLines.Add(new Line() { X1 = x1, X2 = x1, Y1 = 0, Y2 = PianoRollHeight, Stroke = MeasureLineStrokeBrush, StrokeThickness = strokeThickness, StrokeDashArray = strokeDA });
                GridMeasureContentLines.Add(new Line() { X1 = x1, X2 = x1, Y1 = 0, Y2 = PianoRollHeight, Stroke = MeasureLineStrokeBrush, StrokeThickness = strokeThickness, StrokeDashArray = strokeDA });

            }

            measure += 1;

        }

        DrawTripletLines();

        UpdateUnusedSourceWidth();


    }

    internal double tripletRes = 1;

    internal void DrawTripletLines()
    {

        //Draw triplet lines
        TripletLines.Clear();

        int measure = 0;
        for (int msec = 0; msec <= myClip.ClipSourceLenMilliseconds; msec += (int)(MillisecondsPerBeat * editingProject.BeatsPerMeasure))
        {
            double x1 = MsecToPixelsGrid(msec);

            DoubleCollection strokeDA = null;
            double strokeThickness = WorkingGridXZoomFacReverse;
            double resolution = 6 / tripletRes;
            double lineOpacity = 1;
            for (double sfor = 1; sfor <= resolution; sfor += 1)
            {
                if (sfor % resolution % (6 / tripletRes) == 0)
                {
                    strokeThickness = WorkingGridXZoomFacReverse;
                    lineOpacity = 0.5;
                    strokeDA = null;
                }
                else
                {
                    strokeDA = null;
                    lineOpacity = 1;
                    //strokeDA = new DoubleCollection() { 0, 3, 4 };
                    strokeThickness = 0.8 * WorkingGridXZoomFacReverse;
                }

                x1 += measurePixels / resolution;
                TripletLines.Add(new Line() { X1 = x1, X2 = x1, Y1 = 0, Y2 = PianoRollHeight, Opacity = lineOpacity, Stroke = Brushes.Crimson, StrokeThickness = strokeThickness, StrokeDashArray = strokeDA });
            }

            measure += 1;

        }

    }

    //Only drawn once
    private void DrawHorizontalLines()
    {

        for (int noteno = 0; noteno < NumMidiNotesVertical; noteno++)
        {
            double lineYText = NoteYPix(noteno);
            double lineY = NoteYPix(noteno);
            Separator newSep = new Separator() { BorderBrush = Brushes.Black, BorderThickness = new Thickness(0, 0.1, 0, 0), VerticalAlignment = VerticalAlignment.Top, HorizontalAlignment = HorizontalAlignment.Stretch, Height = 1, Margin = new Thickness(0, lineY, 0, 0) };
            newSep.LayoutTransform = new ScaleTransform(1, 10);

            HorizontalLines.Add(newSep);

            switch (noteno % 12)
            {
                case 1:
                case 3:
                case 6:
                case 8:
                case 10:  // C#, Eb, F#, Ab, Bb
                    // Black key lines
                    newSep.Background = Brushes.DarkGray;
                    break;

                default:
                    // White key lines
                    newSep.Background = Brushes.Transparent;
                    if (noteno % 12 == 0)
                    {
                        var tbl = new TextBlock() { VerticalAlignment = VerticalAlignment.Top, HorizontalAlignment = HorizontalAlignment.Left };
                        tbl.Margin = new Thickness(54, lineYText - 6, 0, 0);
                        string ktext = "C" + Convert.ToInt32(noteno / (double)12).ToString();
                        tbl.Text = ktext.PadLeft(3, ' ');
                        NoteNames.Add(tbl);
                    }
                    break;
            }

        }
    }

    
}