using MQTT_WinformV1.Model;
using MQTT_WinformV1.Service;
using MqttClient;
using MySql.Data.MySqlClient;
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.Timers;
using System.Windows.Forms;

namespace MQTT_WinformV1
{
    public partial class FormDataZF : Form
    {
        private System.Timers.Timer _timer;
        private DataUploadService _upLoadService;
        public DataTable sendDb = new DataTable();
        public FormDataZF()
        {
            InitializeComponent();
            _upLoadService = new DataUploadService();
        }

        private void FormDataZF_Load(object sender, EventArgs e)
        {
            timer1.Enabled = true;
            initDBData();
            button2_Click(null,null);
            button1_Click(null,null);
        }

        private void initDBData()
        {
            this.txtIP.Text = Globalstatic.localIP;
            this.txtPort.Text = Globalstatic.localPort;
            this.txtUser.Text = Globalstatic.localUser;
            this.txtPwd.Text = Globalstatic.localPwd;
            this.txtDBName.Text = Globalstatic.localDBName;

            this.txtMesIP.Text = Globalstatic.mesIP;
            this.txtMesPort.Text = Globalstatic.mesPort;
            this.txtMesDB.Text = Globalstatic.mesDBName;
        }

        private void _timer_Tick(object sender, ElapsedEventArgs e)
        {
            
            DataUpload();
        }

        
        //数据上传
        private async Task DataUpload()
        {
            if (TestDbConnection(this.txtIP.Text.Trim(), this.txtPort.Text, this.txtUser.Text, this.txtDBName.Text, this.txtPwd.Text))
            {
                AppendLog("开始上传数据");
                int count = await _upLoadService.QueryDataAsync(this.txtIP.Text.Trim(), this.txtPort.Text, this.txtDBName.Text, this.txtUser.Text, this.txtPwd.Text);
                AppendLog(count.ToString() + "条数据已上传！");
            }
        }

        private void AppendLog(string message)
        {
            try
            {
                if (InvokeRequired)
                {
                    BeginInvoke(new Action<string>(AppendLog), message);
                    return;
                }

                string timeStamped = $"[{DateTime.Now:yyyy-MM-dd HH:mm:ss}] {message}\r\n";
                textBoxLog.AppendText(timeStamped);
            }
            catch (Exception ex)
            {

            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int min;
            if (!int.TryParse(txtLUploadPL.Text, out min) || min <= 0)
            {
                min = 30;
            }
            // 设置定时器（转换为毫秒）
            _timer = new System.Timers.Timer(min * 60 * 1000);
            _timer.Elapsed += _timer_Tick;
            _timer.AutoReset = true; // 是否重复
            _timer.Enabled = true;   // 开始计时
            // 方法：立即执行一次
            _timer_Tick(null, null);
        }

        private async void button2_Click(object sender, EventArgs e)
        {
            //sendDb = await _upLoadService.getSendDB();
            //bindingSource1.DataSource = sendDb;
        }

        // 测试数据库连接的核心方法
        private bool TestDbConnection(string ip, string port, string user, string dbName, string pwd)
        {
            // 1. 基础参数校验
            if (string.IsNullOrWhiteSpace(ip) || string.IsNullOrWhiteSpace(port) ||
                string.IsNullOrWhiteSpace(user) || string.IsNullOrWhiteSpace(dbName))
            {
                MessageBox.Show("IP、端口、用户名、数据库名不能为空！", "参数错误",
                    MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return false;
            }

            // 2. 拼接连接字符串（MySQL）
            MySqlConnectionStringBuilder connStrBuilder = new MySqlConnectionStringBuilder();
            connStrBuilder.Server = ip;

            // 补充：端口解析异常处理（避免非数字端口崩溃）
            if (!uint.TryParse(port, out uint portNum))
            {
                MessageBox.Show("端口格式错误！请输入数字（如3306）", "连接失败",
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
                return false;
            }
            connStrBuilder.Port = portNum; // 端口转无符号整数
            connStrBuilder.UserID = user;
            connStrBuilder.Password = pwd;
            connStrBuilder.Database = dbName;
            connStrBuilder.CharacterSet = "utf8mb4"; // 字符集（避免中文乱码）

            // 3. 尝试连接数据库
            using (MySqlConnection conn = new MySqlConnection(connStrBuilder.ConnectionString))
            {
                try
                {
                    conn.Open(); // 打开连接（同步，WinForm UI 会短暂阻塞，简单场景够用）
                    return true;
                }
                catch (MySqlException ex)
                {
                    // 替换 switch 表达式为传统 switch 语句
                    string errorMsg = "";
                    switch (ex.Number)
                    {
                        case 0:
                            errorMsg = "无法连接到数据库服务器！请检查IP/端口是否正确";
                            break;
                        case 1045:
                            errorMsg = "用户名或密码错误！";
                            break;
                        case 1049:
                            errorMsg = "指定的数据库不存在！";
                            break;
                        default:
                            errorMsg = "数据库连接失败：" + ex.Message;
                            break;
                    }
                    MessageBox.Show(errorMsg, "连接失败",
                        MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                catch (Exception ex)
                {
                    MessageBox.Show("未知错误：" + ex.Message, "连接失败",
                        MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                return false;
            }
        }

        private void button2_Click_1(object sender, EventArgs e)
        {
            if (TestDbConnection(this.txtIP.Text.Trim(), this.txtPort.Text, this.txtUser.Text, this.txtDBName.Text, this.txtPwd.Text))
            {
                MessageBox.Show("数据库连接成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }
    }
}