using LiveCharts;
using LiveCharts.Wpf;
using System;
using System.Drawing;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Windows.Forms.Integration;

namespace 全自动水压检测仪
{
    /// <summary>
    /// 图表管理器 - 负责实时曲线图的创建和数据更新
    /// </summary>
    public class ChartManager
    {
        private ElementHost _chartHost;
        private LiveCharts.Wpf.CartesianChart _chart;
        private ChartValues<double> _pressureValues;
        private ChartValues<double> _temperatureValues;
        private ChartValues<string> _timeLabels;
        private const int MAX_DATA_POINTS = 60; // 最多显示60个数据点

        /// <summary>
        /// 初始化图表并添加到指定面板
        /// </summary>
        public void InitializeChart(Control targetPanel)
        {
            targetPanel.Invoke(new Action(() =>
            {
                if (targetPanel == null)
                    throw new ArgumentNullException(nameof(targetPanel));

                // 清除占位文字
                targetPanel.Text = null;

                // 初始化数据集合
                _pressureValues = new ChartValues<double>();
                _temperatureValues = new ChartValues<double>();
                _timeLabels = new ChartValues<string>();





                // 创建WPF图表控件
                _chart = new LiveCharts.Wpf.CartesianChart
                {
                    Background = System.Windows.Media.Brushes.White,
                    DisableAnimations = false,
                    Hoverable = true,
                    DataTooltip = null,
                    LegendLocation = LegendLocation.Top
                };


                // 配置X轴（时间轴）
                _chart.AxisX.Add(new Axis
                {
                    Title = "时间",
                    Labels = _timeLabels,
                    FontSize = 12,
                    Foreground = System.Windows.Media.Brushes.Black,
                    Separator = new LiveCharts.Wpf.Separator
                    {
                        Step = 5,
                        IsEnabled = true
                    }
                });

                // 配置Y轴（压力）
                _chart.AxisY.Add(new Axis
                {
                    Title = "压力 (MPa)",
                    FontSize = 12,
                    Foreground = System.Windows.Media.Brushes.Blue,
                    LabelFormatter = value => value.ToString("F2"),
                    MinValue = 0
                });

                // 配置第二Y轴（压力设定值）
                _chart.AxisY.Add(new Axis
                {
                    Title = "压力设定值 (MPa)",
                    FontSize = 12,
                    Foreground = System.Windows.Media.Brushes.Red,
                    LabelFormatter = value => value.ToString("F2"),
                    Position = AxisPosition.RightTop,
                    MinValue = 0
                });

                // 添加压力曲线
                _chart.Series.Add(new LineSeries
                {
                    Title = "实时压力",
                    Values = _pressureValues,
                    Stroke = System.Windows.Media.Brushes.Blue,
                    Fill = System.Windows.Media.Brushes.Transparent,
                    PointGeometry = DefaultGeometries.Circle,
                    PointGeometrySize = 5,
                    StrokeThickness = 2,
                    LineSmoothness = 0.3,
                    ScalesYAt = 0
                });

                // 添加压力设定值曲线
                _chart.Series.Add(new LineSeries
                {
                    Title = "压力设定值",
                    Values = _temperatureValues,
                    Stroke = System.Windows.Media.Brushes.Red,
                    Fill = System.Windows.Media.Brushes.Transparent,
                    PointGeometry = DefaultGeometries.Diamond,
                    PointGeometrySize = 5,
                    StrokeThickness = 2,
                    LineSmoothness = 0.3,
                    ScalesYAt = 1
                });

                // 创建ElementHost以承载WPF控件
                _chartHost = new ElementHost
                {
                    Dock = DockStyle.Fill,
                    Child = _chart
                };





                // 添加到目标面板
                targetPanel.Controls.Add(_chartHost);
            }));
        }

        /// <summary>
        /// 添加新的数据点
        /// </summary>
        /// <param name="pressure">实时压力值</param>
        /// <param name="temperature">压力设定值</param>
        /// <param name="time">时间标签（可选，默认使用当前时间）</param>
        public void AddDataPoint(double pressure, double temperature, string time = null)
        {
            if (_pressureValues == null || _temperatureValues == null || _timeLabels == null)
                return;

            // 使用当前时间作为默认标签
            if (string.IsNullOrEmpty(time))
                time = DateTime.Now.ToString("HH:mm:ss");

            // 添加数据点
            _pressureValues.Add(pressure);
            _temperatureValues.Add(temperature);
            _timeLabels.Add(time);

            // 限制数据点数量，保持图表流畅
            if (_pressureValues.Count > MAX_DATA_POINTS)
            {
                _pressureValues.RemoveAt(0);
                _temperatureValues.RemoveAt(0);
                _timeLabels.RemoveAt(0);
            }
        }

        /// <summary>
        /// 清除所有数据
        /// </summary>
        public void ClearData()
        {
            _pressureValues?.Clear();
            _temperatureValues?.Clear();
            _timeLabels?.Clear();
        }

        /// <summary>
        /// 更新图表配置（例如切换温度模式时）
        /// </summary>
        /// <param name="isHighTemperatureMode">是否为高温模式</param>
        public void UpdateChartMode(bool isHighTemperatureMode)
        {
            if (_chart == null || _chart.Series.Count < 2)
                return;

            // 压力设定值曲线标题保持不变
            var pressureSetSeries = _chart.Series[1] as LineSeries;
            if (pressureSetSeries != null)
            {
                pressureSetSeries.Title = "压力设定值";
            }

            // 可以根据模式调整Y轴范围（压力设定值范围）
            if (_chart.AxisY.Count > 1)
            {
                _chart.AxisY[1].MaxValue = 10; // 压力设定值通常不超过10MPa
            }
        }

        /// <summary>
        /// 释放资源
        /// </summary>
        public void Dispose()
        {
            _chartHost?.Dispose();
            _chart = null;
            _pressureValues = null;
            _temperatureValues = null;
            _timeLabels = null;
        }
    }
}