using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Text;
using System.Windows.Forms.DataVisualization.Charting;

namespace JinYuan.Helper
{
    public class ChartHelper
    {
        // 字体缓存
        private static readonly Dictionary<string, Font> _fontCache = new Dictionary<string, Font>();
        private static PrivateFontCollection _fontCollection;
        private static readonly object _fontLock = new object();

        /// <summary>
        /// 初始化字体集合
        /// </summary>
        private static void InitializeFontCollection()
        {
            if (_fontCollection == null)
            {
                lock (_fontLock)
                {
                    if (_fontCollection == null)
                    {
                        _fontCollection = new PrivateFontCollection();
                        try
                        {
                            // 只加载一次字体文件
                            string fontPath = Environment.CurrentDirectory + "\\Assts\\Fonts\\Zen圓体-Regular.ttf";
                            if (System.IO.File.Exists(fontPath))
                            {
                                _fontCollection.AddFontFile(fontPath);
                            }
                        }
                        catch (Exception ex)
                        {
                            // 字体加载失败，使用默认字体
                            LogHelper.Instance.WriteError($"字体加载失败: {ex.Message}", "FontError");
                        }
                    }
                }
            }
        }

        /// <summary>
        /// 获取字体
        /// </summary>
        /// <param name="size">字体大小</param>
        /// <param name="style">字体样式</param>
        /// <returns>字体对象</returns>
        private static Font GetFont(float size, FontStyle style)
        {
            string key = $"{size}_{style}";
            
            if (_fontCache.TryGetValue(key, out Font cachedFont))
            {
                return cachedFont;
            }

            lock (_fontLock)
            {
                if (_fontCache.TryGetValue(key, out cachedFont))
                {
                    return cachedFont;
                }

                InitializeFontCollection();
                Font font;
                
                try
                {
                    if (_fontCollection != null && _fontCollection.Families.Length > 0)
                    {
                        FontFamily fontFamily = new FontFamily(_fontCollection.Families[0].Name, _fontCollection);
                        font = new Font(fontFamily, size, style);
                    }
                    else
                    {
                        // 使用默认字体作为 fallback
                        font = new Font("微软雅黑", size, style);
                    }
                }
                catch
                {
                    // 字体创建失败，使用默认字体
                    font = new Font("微软雅黑", size, style);
                }

                _fontCache[key] = font;
                return font;
            }
        }

        /// <summary>
        /// 清理字体缓存
        /// </summary>
        public static void ClearFontCache()
        {
            lock (_fontLock)
            {
                foreach (var font in _fontCache.Values)
                {
                    font.Dispose();
                }
                _fontCache.Clear();
                
                if (_fontCollection != null)
                {
                    _fontCollection.Dispose();
                    _fontCollection = null;
                }
            }
        }

        /// <summary>
        /// Name：添加序列
        ///
        /// </summary>
        /// <param name="chart">图表对象</param>
        /// <param name="seriesName">序列名称</param>
        /// <param name="chartType">图表类型</param>
        /// <param name="chartValueType">图表值类型</param>
        /// <param name="markerStyle">标记样式</param>
        /// <param name="markerSize">标记大小</param>
        /// <param name="seriesColor">颜色</param>
        /// <param name="markColor">标记点颜色</param>
        /// <param name="LabelStyle">标签样式</param>
        /// <param name="isShowBFH">是否显示百分比</param>
        /// <param name="showValue">是否显示数值</param>
        public static void AddSeries(Chart chart, string seriesName, SeriesChartType chartType, ChartValueType chartValueType, MarkerStyle markerStyle, int markerSize, Color seriesColor, Color markColor, string LabelStyle, bool isShowBFH, bool showValue = false)
        {
            chart.Series.Add(seriesName);
            chart.Series[seriesName].ChartType = chartType;
            chart.Series[seriesName].Color = seriesColor;
            if (showValue)
            {
                Font myFont = GetFont(9.0f, FontStyle.Bold);
                
                chart.Series[seriesName].IsValueShownAsLabel = showValue;
                chart.Series[seriesName].XValueType = chartValueType;
                chart.Series[seriesName].Label = LabelStyle;
                chart.Series[seriesName].Font = myFont;
                chart.Series[seriesName].MarkerStyle = markerStyle;
                chart.Series[seriesName].MarkerColor = markColor;
                chart.Series[seriesName].MarkerStyle = MarkerStyle.Circle;   //线条上的数据点标志类型
                chart.Series[seriesName].MarkerSize = markerSize;  //标志大小
                chart.Series[seriesName].LabelToolTip = "#VALX: #VALY";
                chart.Series[seriesName].LabelForeColor = markColor;
                chart.Series[seriesName].LabelAngle = -75;
                chart.Series[seriesName].BorderWidth = 3;
                chart.Series[seriesName].LabelBorderWidth = 5;

                if (isShowBFH)
                {
                    chart.Series[seriesName].YAxisType = AxisType.Secondary;
                }

            }
        }

        /// <summary>
        /// Name：设置标题
        ///  
        /// </summary>
        /// <param name="chart">图表对象</param>
        /// <param name="chartName">图表名称</param>
        /// <param name="font">字体</param>
        /// <param name="docking">停靠位置</param>
        /// <param name="foreColor">前景色</param>
        public static void SetTitle(Chart chart, string chartName, Font font, Docking docking, Color foreColor)
        {
            chart.Titles.Add(chartName);
            chart.Titles[0].Font = font;
            chart.Titles[0].Docking = docking;
            chart.Titles[0].ForeColor = foreColor;
        }

        /// <summary>
        /// Name：设置样式
        /// 2019-04-23 14:04
        /// </summary>
        /// <param name="chart">图表对象</param>
        /// <param name="backColor">背景颜色</param>
        /// <param name="foreColor">字体颜色</param>
        public static void SetStyle(Chart chart, Color backColor, Color foreColor)
        {
            chart.BackColor = backColor;
            chart.ChartAreas[0].BackColor = backColor;
            chart.ForeColor = Color.Red;
        }

        /// <summary>
        /// Name：设置图例
        /// Author：
        /// </summary>
        /// <param name="chart">图表对象</param>
        /// <param name="docking">停靠位置</param>
        /// <param name="align">对齐方式</param>
        /// <param name="backColor">背景颜色</param>
        /// <param name="foreColor">字体颜色</param>
        public static void SetLegend(Chart chart, Docking docking, StringAlignment align, Color backColor, Color foreColor)
        {
            Font myFont = GetFont(9.0f, FontStyle.Regular);

            chart.Legends[0].Docking = docking;
            chart.Legends[0].Alignment = align;
            chart.Legends[0].BackColor = backColor;
            chart.Legends[0].ForeColor = foreColor;
            chart.Legends[0].Font = myFont;

        }

        /// <summary>
        /// Name：设置XY轴
        /// Author：
        /// </summary>
        /// <param name="chart">图表对象</param>
        /// <param name="xTitle">X轴标题</param>
        /// <param name="yTitle">Y轴标题</param>
        /// <param name="Angle">角度</param>
        /// <param name="align">坐标轴标题对齐方式</param>
        /// <param name="foreColor">坐标轴字体颜色</param>
        /// <param name="lineColor">坐标轴颜色</param>
        /// <param name="arrowStyle">坐标轴箭头样式</param>
        /// <param name="xInterval">X轴的间距</param>
        /// <param name="isShowBFH">是否显示百分比</param>
        /// <param name="isShowTime">是否显示时间</param>
        public static void SetXY(Chart chart, string xTitle, string yTitle, int Angle, StringAlignment align, Color foreColor, Color lineColor, AxisArrowStyle arrowStyle, double xInterval, bool isShowBFH, bool isShowTime = false)
        {
            Font myFont = GetFont(15f, FontStyle.Regular);

            chart.ChartAreas[0].AxisX.TitleForeColor = foreColor;
            chart.ChartAreas[0].AxisX.LabelStyle = new LabelStyle() { ForeColor = foreColor };
            chart.ChartAreas[0].AxisX.LabelStyle.Angle = Angle;
            chart.ChartAreas[0].AxisX.LineColor = lineColor;
            chart.ChartAreas[0].AxisX.LabelStyle.ForeColor = lineColor;
            chart.ChartAreas[0].AxisX.ArrowStyle = arrowStyle;
            chart.ChartAreas[0].AxisX.Interval = xInterval;
            chart.ChartAreas[0].AxisX.Title = xTitle;
            chart.ChartAreas[0].AxisX.TitleAlignment = align;

            chart.ChartAreas[0].AxisY.TitleForeColor = foreColor;
            chart.ChartAreas[0].AxisY.LabelStyle = new LabelStyle() { ForeColor = foreColor };
            chart.ChartAreas[0].AxisY.LineColor = lineColor;
            chart.ChartAreas[0].AxisY.LabelStyle.ForeColor = lineColor;
            chart.ChartAreas[0].AxisY.ArrowStyle = arrowStyle;
            chart.ChartAreas[0].AxisY.Title = yTitle;
            chart.ChartAreas[0].AxisY.TitleAlignment = align;

            if (isShowBFH)
            {
                chart.ChartAreas[0].AxisY2.Minimum = 0;
                chart.ChartAreas[0].AxisY2.Maximum = 1.2;
                chart.ChartAreas[0].AxisY2.Interval = 0.2;
                chart.ChartAreas[0].AxisY2.LabelStyle = new LabelStyle() { ForeColor = foreColor };
                chart.ChartAreas[0].AxisY2.LineColor = lineColor;
                chart.ChartAreas[0].AxisY2.LabelStyle.ForeColor = lineColor;
                chart.ChartAreas[0].AxisY2.LabelStyle.Format = "0.00%";
            }

            ////设置图表显示样式
            if (isShowTime)
            {
                chart.ChartAreas[0].AxisX.LabelStyle.Format = "HH:mm:ss";         //毫秒格式： hh:mm:ss.fff ，后面几个f则保留几位毫秒小数，此时要注意轴的最大值和最小值不要差太大
                chart.ChartAreas[0].AxisX.LabelStyle.IntervalType = DateTimeIntervalType.Seconds;
                chart.ChartAreas[0].AxisX.Interval = xInterval; //坐标值间隔1S
                chart.ChartAreas[0].AxisX.LabelStyle.IsEndLabelVisible = false;   //防止X轴坐标跳跃
                chart.ChartAreas[0].AxisX.MajorGrid.IntervalType = DateTimeIntervalType.Seconds;

                //chart.ChartAreas[0].AxisY.L = 1;                 //网格间隔

                chart.ChartAreas[0].AxisX.Minimum = DateTime.Now.ToOADate();      //当前时间
                chart.ChartAreas[0].AxisX.Maximum = DateTime.Now.ToOADate();
            }
        }

        /// <summary>
        /// Name：设置网格
        /// Author：
        /// </summary>
        /// <param name="chart">图表对象</param>
        /// <param name="lineColor">网格线颜色</param>
        /// <param name="xInterval">X轴网格的间距</param>
        /// <param name="yInterval">Y轴网格的间距</param>
        /// <param name="isMajorGridX">是否显示X轴网格</param>
        /// <param name="isMajorGridY">是否显示Y轴网格</param>
        public static void SetMajorGrid(Chart chart, Color lineColor, double xInterval, double yInterval, bool isMajorGridX = false, bool isMajorGridY = false)
        {
            chart.ChartAreas[0].AxisX.MajorGrid.Enabled = isMajorGridX;
            chart.ChartAreas[0].AxisY.MajorGrid.Enabled = isMajorGridY;
            chart.ChartAreas[0].AxisY2.MajorGrid.Enabled = isMajorGridY;
            if (isMajorGridX)
            {
                chart.ChartAreas[0].AxisX.MajorGrid.LineColor = lineColor;

                chart.ChartAreas[0].AxisX.MajorGrid.Interval = xInterval;

                chart.ChartAreas[0].AxisX.MajorGrid.LineDashStyle = ChartDashStyle.Dash;

            }

            if (isMajorGridY)
            {
                chart.ChartAreas[0].AxisY.MajorGrid.LineColor = lineColor;
                chart.ChartAreas[0].AxisY.MajorGrid.Interval = yInterval;
                chart.ChartAreas[0].AxisY.MajorGrid.LineDashStyle = ChartDashStyle.Dash;
            }

        }
    }
}