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 System.IO.Ports;
using System.Threading;
using Newtonsoft.Json.Linq;
using Ini;
using FileInfoClass;

namespace DGPosPay.Window
{
    public partial class WaitWindow : Form
    {
        FileClass fileclass = new FileClass();
        Thread th;
        IniFile ini = new IniFile();
        public string label3data = "";
        public int countDownTime = 60;
        public string posData = "";
        public string outstring = "";
        private SerialPort serialPort = new SerialPort();
        private System.Timers.Timer closeTimer;
        private bool isCountingDown = false;
        int closeDownTime = 60;
        public WaitWindow(SerialPort SerialPort)
        {
            InitializeComponent();
            countDownTime = int.Parse(ini.IniReadValue("Config", "waitTime"));
            string closeDownTimeinfo = ini.IniReadValue("Config", "closeDownTime");
            if (closeDownTimeinfo != "")
            {
                closeDownTime= int.Parse(closeDownTimeinfo);
            }
            this.label1.Text = "请操作POS,正在等待POS 返回.....";
            // 获取当前屏幕的工作区域
            Rectangle screenRectangle = Screen.GetWorkingArea(this);

            // 计算窗体居中的位置
            int left = screenRectangle.Left + (screenRectangle.Width - this.Width) / 2;
            int top = screenRectangle.Top + (screenRectangle.Height - this.Height) / 2;
            // 设置窗体的位置
            this.Location = new Point(left, top);
            serialPort = SerialPort;
            if (th == null || !th.IsAlive)
            {
                th = new Thread(Run);
                th.IsBackground = true;
                th.Start();
            }
            // 注册事件处理程序
            this.FormClosing += MainForm_FormClosing;
        }
        // FormClosing 事件处理 - 允许取消关闭
        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            // e.CloseReason 包含关闭原因（用户点击按钮、程序调用等）
            if (e.CloseReason == CloseReason.UserClosing)
            {
                // 如果正在倒计时，忽略本次关闭请求
                if (isCountingDown)
                {
                    e.Cancel = true;
                    return;
                }
                int warningTime = int.Parse(ini.IniReadValue("Config", "warningTime"));
                try
                {
                    
                    // 显示初始倒计时
                    UpdateCountdownLabel(closeDownTime);
                    // 标记为正在倒计时
                    isCountingDown = true;
                    // 防止多次启动计时器
                    if (closeTimer != null && closeTimer.Enabled)
                        return;

                    // 创建计时器
                    closeTimer = new System.Timers.Timer(1000);
                    closeTimer.Elapsed += (s, args) =>
                    {
                        if (closeDownTime > 0)
                        {
                            closeDownTime--;

                            // 更新UI
                            this.Invoke((MethodInvoker)delegate
                            {
                                UpdateCountdownLabel(closeDownTime);

                                // 时间不足时改变颜色
                                if (closeDownTime <= warningTime)
                                {
                                    label2.ForeColor = Color.Red;
                                }
                            });
                        }
                        else
                        {
                            closeTimer.Stop();

                            // 移除事件处理，防止递归
                            this.FormClosing -= MainForm_FormClosing;

                            // 关闭窗体
                            this.Invoke((MethodInvoker)delegate
                            {
                                this.Close();
                            });
                        }
                    };

                    // 阻止默认关闭行为
                    e.Cancel = true;
                    closeTimer.Start();
                }
                catch (Exception ex)
                {
                    MessageBox.Show($"关闭时出错: {ex.Message}", "错误",
                        MessageBoxButtons.OK, MessageBoxIcon.Error);

                    // 发生错误时允许正常关闭
                    e.Cancel = false;
                }
            }
        }
        private void UpdateCountdownLabel(int closeDownTime)
        {
            if ((closeDownTime!=0)&& (closeDownTime != 1))
            {
                label2.Text = $"将在 {closeDownTime} 秒后关闭,请操作POS取消";
            }
            
        }
        private void Run()
        {
            string errorCode = "-1";
            string errorMessage = "";
            JObject jObject = new JObject();
            int warningTime = int.Parse(ini.IniReadValue("Config", "warningTime"));
            try
            {
                Thread.Sleep(1000);
                this.Invoke((MethodInvoker)delegate
                {
                    this.TopMost = false;
                    this.BringToFront();
                    this.TopMost = true;
                });

                System.Timers.Timer timer = new System.Timers.Timer(1000);
                timer.Elapsed += (sender, e) =>
                {
                    if (countDownTime > 0)
                    {
                        countDownTime--;
                        if (countDownTime < warningTime)
                        {
                            this.Invoke((MethodInvoker)delegate
                            {
                                this.label2.ForeColor = Color.Red;
                            });
                        }

                        if (posData == "")
                        {
                            if (serialPort.BytesToRead > 0)
                            {
                                StringBuilder txt = new StringBuilder();
                                while (serialPort.BytesToRead > 0)
                                {
                                    string nextData = serialPort.ReadExisting();
                                    txt.Append(nextData);
                                    Thread.Sleep(100);
                                }
                                string receivedData = txt.ToString();
                                string logPath = ini.IniReadValue("LOG", "path");
                                string DateTimeinfo = DateTime.Now.TimeOfDay.ToString();
                                fileclass.WriteLogFile(logPath, " POS返参: " + receivedData);
                                posData = receivedData;
                                countDownTime = warningTime;
                                JObject posDataobj = JObject.Parse(posData);
                                JObject jObject2 = new JObject();
                                string status = posDataobj["status"].ToString();
                                errorMessage = posDataobj["message"].ToString();
                                 
                                this.Invoke((MethodInvoker)delegate
                                {
                                    this.label3.Text = errorMessage;
                                });

                                if (status == "100")
                                {
                                    errorCode = "0";
                                    countDownTime = 0;
                                    closeDownTime = 0;
                                }
                                else
                                {
                                    errorCode = status;
                                }
                                jObject2.Add("errorCode", errorCode);
                                jObject2.Add("errorMessage", errorMessage);
                                jObject2.Add("posData", receivedData);
                                outstring = jObject2.ToString();
                            }
                        }
                        else
                        {
                            if (errorMessage != "")
                            {
                                this.Invoke((MethodInvoker)delegate
                                {
                                    this.label3.Text = errorMessage;
                                });
                            }
                            this.Invoke((MethodInvoker)delegate
                            {
                                this.label2.Text = countDownTime + "";
                            });
                            closeDownTime = 0;
                        }
                    }
                    else
                    {
                        timer.Stop();
                        this.Invoke((MethodInvoker)delegate
                        {
                            this.Close();
                        });
                    }
                };
                timer.Start();
            }
            catch (Exception ex2)
            {
                errorCode = "-1";
                errorMessage = ex2.Message;
                JObject jObject2 = new JObject();
                jObject2.Add("errorCode", errorCode);
                jObject2.Add("errorMessage", errorMessage);
                outstring = jObject2.ToString();
            }
        }

    }
}