using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using BaseFunction;

namespace NSAnalysis
{
    /// <summary>
    /// 日志统计窗体，用于显示所有窗体的运行统计信息
    /// </summary>
    public partial class LogStatisticsForm : Form
    {
        private Timer refreshTimer;
        private TextBox txtStatistics;
        private Button btnRefresh;
        private Button btnReset;
        private Button btnExport;
        
        public LogStatisticsForm()
        {
            InitializeComponent();
            SetupControls();
            SetupTimer();
        }
        
        private void InitializeComponent()
        {
            this.Text = "窗体刷新统计监控";
            this.Size = new Size(800, 600);
            this.StartPosition = FormStartPosition.CenterScreen;
            this.FormBorderStyle = FormBorderStyle.Sizable;
            this.MinimumSize = new Size(600, 400);
        }
        
        private void SetupControls()
        {
            // 创建控件
            txtStatistics = new TextBox
            {
                Multiline = true,
                ScrollBars = ScrollBars.Both,
                ReadOnly = true,
                Font = new Font("Consolas", 9),
                Dock = DockStyle.Fill
            };
            
            Panel buttonPanel = new Panel
            {
                Height = 40,
                Dock = DockStyle.Bottom
            };
            
            btnRefresh = new Button
            {
                Text = "刷新统计",
                Size = new Size(80, 30),
                Location = new Point(10, 5)
            };
            
            btnReset = new Button
            {
                Text = "重置统计",
                Size = new Size(80, 30),
                Location = new Point(100, 5)
            };
            
            btnExport = new Button
            {
                Text = "导出日志",
                Size = new Size(80, 30),
                Location = new Point(190, 5)
            };
            
            // 添加事件处理
            btnRefresh.Click += BtnRefresh_Click;
            btnReset.Click += BtnReset_Click;
            btnExport.Click += BtnExport_Click;
            
            // 添加控件到窗体
            buttonPanel.Controls.Add(btnRefresh);
            buttonPanel.Controls.Add(btnReset);
            buttonPanel.Controls.Add(btnExport);
            
            this.Controls.Add(txtStatistics);
            this.Controls.Add(buttonPanel);
        }
        
        private void SetupTimer()
        {
            refreshTimer = new Timer
            {
                Interval = 5000 // 每5秒自动刷新
            };
            refreshTimer.Tick += RefreshTimer_Tick;
            refreshTimer.Start();
        }
        
        private void RefreshTimer_Tick(object sender, EventArgs e)
        {
            RefreshStatistics();
        }
        
        private void BtnRefresh_Click(object sender, EventArgs e)
        {
            RefreshStatistics();
        }
        
        private void BtnReset_Click(object sender, EventArgs e)
        {
            var result = MessageBox.Show("确定要重置所有窗体的统计信息吗？", "确认重置", 
                MessageBoxButtons.YesNo, MessageBoxIcon.Question);
            
            if (result == DialogResult.Yes)
            {
                RefreshMonitor.Reset();
                RefreshStatistics();
                MyBase.TraceWriteLine("[LogStatisticsForm] 用户手动重置了所有统计信息");
            }
        }
        
        private void BtnExport_Click(object sender, EventArgs e)
        {
            try
            {
                SaveFileDialog saveDialog = new SaveFileDialog
                {
                    Filter = "文本文件|*.txt|所有文件|*.*",
                    FileName = $"窗体刷新统计_{DateTime.Now:yyyyMMdd_HHmmss}.txt"
                };
                
                if (saveDialog.ShowDialog() == DialogResult.OK)
                {
                    System.IO.File.WriteAllText(saveDialog.FileName, txtStatistics.Text, Encoding.UTF8);
                    MessageBox.Show($"统计信息已导出到：{saveDialog.FileName}", "导出成功", 
                        MessageBoxButtons.OK, MessageBoxIcon.Information);
                    MyBase.TraceWriteLine($"[LogStatisticsForm] 统计信息已导出到: {saveDialog.FileName}");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show($"导出失败：{ex.Message}", "错误", 
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
                MyBase.TraceWriteLine($"[LogStatisticsForm] 导出失败: {ex.Message}");
            }
        }
        
        private void RefreshStatistics()
        {
            try
            {
                var sb = new StringBuilder();
                sb.AppendLine($"=== 窗体刷新监控统计 ===");
                sb.AppendLine($"更新时间: {DateTime.Now:yyyy-MM-dd HH:mm:ss}");
                sb.AppendLine();
                
                // 获取所有窗体的统计信息
                string[] windowNames = { "FEHYLeftCarData", "FEH3LeftCarData", "FEHYRightCarData", "FEH3RightCarData" };
                
                foreach (string windowName in windowNames)
                {
                    sb.AppendLine($"【{windowName}】");
                    sb.AppendLine($"  {RefreshMonitor.GetStatistics(windowName)}");
                    
                    // 检查是否有超时
                    if (RefreshMonitor.CheckRefreshTimeout(windowName, 5))
                    {
                        sb.AppendLine($"  ⚠️ 警告: 该窗体可能已停止刷新！");
                    }
                    sb.AppendLine();
                }
                
                // 添加系统信息
                sb.AppendLine("=== 系统信息 ===");
                sb.AppendLine($"当前时间: {DateTime.Now:yyyy-MM-dd HH:mm:ss}");
                sb.AppendLine($"系统运行时间: {Environment.TickCount / 1000 / 60:F1} 分钟");
                sb.AppendLine($"内存使用: {GC.GetTotalMemory(false) / 1024 / 1024:F1} MB");
                
                txtStatistics.Text = sb.ToString();
                
                // 自动滚动到底部
                txtStatistics.SelectionStart = txtStatistics.Text.Length;
                txtStatistics.ScrollToCaret();
            }
            catch (Exception ex)
            {
                txtStatistics.Text = $"刷新统计信息时出错: {ex.Message}";
                MyBase.TraceWriteLine($"[LogStatisticsForm] 刷新统计信息异常: {ex.Message}");
            }
        }
        
        protected override void OnFormClosing(FormClosingEventArgs e)
        {
            refreshTimer?.Stop();
            refreshTimer?.Dispose();
            MyBase.TraceWriteLine("[LogStatisticsForm] 统计监控窗体已关闭");
            base.OnFormClosing(e);
        }
        
        /// <summary>
        /// 显示统计窗体（单例模式）
        /// </summary>
        private static LogStatisticsForm instance;
        public static void ShowStatistics()
        {
            if (instance == null || instance.IsDisposed)
            {
                instance = new LogStatisticsForm();
            }
            
            if (!instance.Visible)
            {
                instance.Show();
            }
            else
            {
                instance.BringToFront();
            }
        }
    }
}