using CnasSynchronusClient;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace CNAS_Authorize
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {

        private MachineAuth m_machines;

        public MainWindow()
        {
            InitializeComponent();

        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            m_machines = new MachineAuth();
            m_machines.Load();
            dataGrid.ItemsSource = m_machines.Page;
            this.DataContext = m_machines;
        }

        private void Window_SizeChanged(object sender, SizeChangedEventArgs e)
        {
            if (this.Width < 500) return;
            dataGrid.Width = this.Width - 48;
            dataGrid.Height = centerPanel.Height;

            //设置列宽
            double colWidth = this.Width - 60;// centerPanel.Width;
            for (int i = 1; i < dataGrid.Columns.Count; i++)
            {
                colWidth = colWidth - dataGrid.Columns[i].Width.Value;
            }
            if (colWidth > 0)
                dataGrid.Columns[0].Width = colWidth;

            edtMachine.Width = this.Width - lbMachine.Width - btnQuery.Width - 48;
            edtFactory.Width = edtMachine.Width;

        }

        private void refreshBind()
        {
            this.DataContext = null;
            this.DataContext = m_machines;
        }

        private void PrevPage_Click(object sender, RoutedEventArgs e)
        {
            bool ok;
            List<Machine> page = m_machines.PrevPage(out ok);
            if (ok)
            {
                dataGrid.ItemsSource = page;
                refreshBind();
            }


        }

        private void NextPage_Click(object sender, RoutedEventArgs e)
        {
            bool ok;
            List<Machine> page = m_machines.NextPage(out ok);
            if (ok)
            {
                dataGrid.ItemsSource = page;
                refreshBind();
            }

        }

        private void Query_Click(object sender, RoutedEventArgs e)
        {
            m_machines.ChangeFilter(edtMachine.Text.Trim(), edtFactory.Text.Trim());
            dataGrid.ItemsSource = m_machines.Page;
            refreshBind();
        }

        private void ConfirmImport_Click(object sender, RoutedEventArgs e)
        {
            //MySQLHelper.ExecuteNonQuery(strInsertSql, parameters);
            //int iReturn = CnasDataOperationFact.CnasDataOperation().InsertDataToCNASTable(ConvertDataRowToTable(drNewTarget), targetdataBase, banlanceitem.syncParamasInfos, banlanceitem.CnasInstrumentColumn, banlanceitem.lstFixedValue);
            //if (iReturn <= 0)  //此时出现问题
            //{
            //    if (iReturn == -1)
            //    {
            //        AppLog.ServiceInfo("数据库连接中断，终止本次上传。");
            //        break;   //此时数据库连接中断，直接跳出循环，结束本次数据同步传输
            //    }
            //    else if (iReturn == -2)  //等于-2表示插入准备更新时发现数据一致，不再执行
            //    {
            //        OtherCount++;
            //    }
            //    else
            //    {
            //        ErrorCount++;
            //        /*需要转换一下，否则会将整个dt全部写入日志*/
            //        lstError.Add(GlobalCommonOperation.ConvertDataRowToTable(drNewTarget).Rows[0]);
            //    }

            //    bSuccess = false;
            //}
        }

        private void DownloadActivationCode_Click(object sender, RoutedEventArgs e)
        {
            var button = sender as Button;
            var machine = button.DataContext as Machine;
            if (machine != null)
            {
                try
                {
                    // 生成激活码
                    string activationCode = GenerateActivationCode(machine.MachineCode);
                    
                    // 创建保存文件对话框
                    var saveFileDialog = new Microsoft.Win32.SaveFileDialog
                    {
                        FileName = $"激活码_{machine.MachineCode}_{DateTime.Now:yyyyMMdd}",
                        DefaultExt = ".txt",
                        Filter = "文本文件|*.txt"
                    };

                    if (saveFileDialog.ShowDialog() == true)
                    {
                        // 将激活码写入文件
                        System.IO.File.WriteAllText(saveFileDialog.FileName, activationCode);
                        MessageBox.Show("激活码已成功保存！", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                        
                        // 更新状态
                        machine.IsGenerated = true;
                        refreshBind();
                    }
                }
                catch (Exception ex)
                {
                    MessageBox.Show($"下载激活码失败: {ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                }
            }
        }

        private string GenerateActivationCode(string machineCode)
        {
            // 这里实现激活码生成算法
            // 示例：简单的加密算法，实际应用中应该使用更安全的加密方式
            using (var md5 = System.Security.Cryptography.MD5.Create())
            {
                // 加入时间戳使得生成的激活码具有时效性
                string input = machineCode + DateTime.Now.ToString("yyyyMMdd");
                byte[] inputBytes = Encoding.UTF8.GetBytes(input);
                byte[] hashBytes = md5.ComputeHash(inputBytes);
                
                // 转换为16进制字符串
                StringBuilder sb = new StringBuilder();
                for (int i = 0; i < hashBytes.Length; i++)
                {
                    sb.Append(hashBytes[i].ToString("X2"));
                    // 每4个字符添加一个分隔符，提高可读性
                    if ((i + 1) % 4 == 0 && i != hashBytes.Length - 1)
                    {
                        sb.Append("-");
                    }
                }
                return sb.ToString();
            }
        }
    }
}