using System;
using System.Collections.Generic;
using System.Linq;
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;
using System.IO;
using System.IO.Ports;
using MyGlib;
using Microsoft.Win32;

namespace DeviceUpdata
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private string mFile;

        private bool mWorking=false;

        private OkBootDevice mDev;

        public MainWindow()
        {
            InitializeComponent();
            Status.Content = "";
            mDev = new OkBootDevice();
            mDev.AddCallBack(UpdataChanged);
        }

        /// <summary>
        /// 升级进度有变化，运行在mDev的私有线程，无法直接操作控件
        /// </summary>
        /// <param name="Total">总字节数</param>
        /// <param name="Done">已完成字节数</param>
        /// <returns>true 事件不再传递，false 事件继续传递</returns>
        private bool UpdataChanged(OkBootUpdater.event_t errorCode, int Total, int Done)
        {
            // 委托UI线程执行 (应该也可以使用发送信号量/消息队列的方式进行线程同步)
            Dispatcher.Invoke(
                new Action(
                        delegate
                        {
                            switch (errorCode)
                            {
                                case OkBootUpdater.event_t.UPDATA_PROGESS:     // 一切正常，更新进度
                                    progress_bar.Maximum = Total;
                                    progress_bar.Value = Done;
                                    Status.Content = "" + Done + "Bytes/" + Total + "Bytes. "+ Done*100/ Total +"%. ";
                                    break;
                                case OkBootUpdater.event_t.UPDATA_COMPLATED:
                                    Status.Content = "Updata complated.";
                                    Cancel.IsEnabled = true;
                                    Bt_Update.IsEnabled = true;
                                    mWorking = false;
                                    mDev.DisConnect();
                                    break;
                                case OkBootUpdater.event_t.UPDATA_CHKERR:
                                    Status.Content = "Upgrade failed. Check error. The firmware of the device may be damaged.";
                                    Cancel.IsEnabled = true;
                                    Bt_Update.IsEnabled = true;
                                    mWorking = false;
                                    mDev.DisConnect();
                                    break;
                                case OkBootUpdater.event_t.UPDATA_DATAERR:
                                    Status.Content = "Upgrade failed. file error.";
                                    Cancel.IsEnabled = true;
                                    Bt_Update.IsEnabled = true;
                                    mWorking = false;
                                    mDev.DisConnect();
                                    break;
                                case OkBootUpdater.event_t.UPDATA_SIZEERR:
                                    Status.Content = "Upgrade failed. Firmware size error.";
                                    Cancel.IsEnabled = true;
                                    Bt_Update.IsEnabled = true;
                                    mWorking = false;
                                    mDev.DisConnect();
                                    break;
                                case OkBootUpdater.event_t.UPDATA_TIMEOUT:
                                    Status.Content = "Upgrade failed. Timeout.";
                                    Cancel.IsEnabled = true;
                                    Bt_Update.IsEnabled = true;
                                    mWorking = false;
                                    mDev.DisConnect();
                                    break;
                                case OkBootUpdater.event_t.UPDATA_UNKNOWCMD:
                                    Status.Content = "Upgrade failed. Unknow cmd.";
                                    Cancel.IsEnabled = true;
                                    Bt_Update.IsEnabled = true;
                                    mWorking = false;
                                    mDev.DisConnect();
                                    break;

                                case OkBootUpdater.event_t.UPDATA_NODEVICE:
                                    Status.Content = "Upgrade failed. Make sure the device is connected.";
                                    Cancel.IsEnabled = true;
                                    Bt_Update.IsEnabled = true;
                                    mWorking = false;
                                    mDev.DisConnect();
                                    break;

                                default: break;
                            }
                        }
                    ));
            return false;
        }

        // 关闭按钮
        private void Button_Cancel_Click(object sender, RoutedEventArgs e)
        {
            Close();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            PortList.ItemsSource = mDev.GetPortNames();
        }

        private void Window_Closed(object sender, EventArgs e)
        {
            mDev.DisConnect();
        }

        private void Bt_Update_Click(object sender, RoutedEventArgs e)
        {
            Cancel.IsEnabled = false;
            Bt_Update.IsEnabled = false;
            mFile = Tb_OupFile.Text;
            mDev.SetBaudRate(int.Parse(Tb_BaudRate.Text));
            mDev.SetRstCode(Misc.GetBytesFromHexString(Tb_RstCode.Text));
            mDev.SetShortCircuitHalfDuplex((bool)Cb_Shd.IsChecked);
            mDev.SetPort(PortList.Text);
            if (File.Exists(mFile))
            {   // 升级文件存在
                byte[] filedata = File.ReadAllBytes(mFile);
                if (filedata[0] == 0XAA && filedata[1] == 0X55)
                {   // 文件类型正确
                    if (mDev.StartUpDate(filedata))
                    {   // 启动升级成功
                        Status.Content = "正在升级(Updating)....";
                        mWorking = true;
                    }
                    else
                    {
                        Status.Content = "串口打开失败或者文件错误。(Can't open port, or file error.)";
                        Cancel.IsEnabled = true;    // 使能退出按钮
                        Bt_Update.IsEnabled = true;
                    }
                }
                else
                {
                    Status.Content = "文件错误。(File error.)";
                    Cancel.IsEnabled = true;    // 使能退出按钮
                    Bt_Update.IsEnabled = true;
                }
            }
            else
            {
                Status.Content = "找不到升级文件。(No file.)";
                Cancel.IsEnabled = true;    // 使能退出按钮
                Bt_Update.IsEnabled = true;
            }
        }

        private void Bt_OpenFile_Click(object sender, RoutedEventArgs e)
        {
            OpenFileDialog openFile = new OpenFileDialog();
            openFile.Filter = "oup file（*.oup）|*.oup";
            if (openFile.ShowDialog() == true)
            {
                Tb_OupFile.Text = openFile.FileName;     //获取选择的文件名
            }
        }

        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            if(mWorking)
            {
                MessageBoxResult result = MessageBox.Show("正在升级，确定是退出吗？", "询问", MessageBoxButton.YesNo, MessageBoxImage.Question);
                //关闭窗口
                if (result == MessageBoxResult.Yes)
                    e.Cancel = false;
                //不关闭窗口
                if (result == MessageBoxResult.No)
                    e.Cancel = true;
            }
        }
    }
}