using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;
using AutoFocusTool.Devices;
using AutoFocusTool.Imaging;
using AutoFocusTool.Serial;
using SerialCamera = AutoFocusTool.Camera.Camera;

namespace AutoFocusTool
{
    public partial class MainWindow : Window
    {
        private readonly DeviceScanner _scanner = new DeviceScanner();
        private List<HouseDevice> _houses = new List<HouseDevice>();

        private SerialCamera _camera;     // 当前连接的相机
        private HouseMotor _motor;        // 当前连接的串口马达+光源
        private HouseDevice _current;     // 当前舱室

        private CancellationTokenSource _liveCts;   // 实时预览
        private CancellationTokenSource _scanCts;   // Z扫描
        private volatile bool _busy;                // 串口忙（避免并发命令）

        private int _lastZ = -1, _lastH = -1, _curWell = -1;  // 最近回读的Z/水平位置、当前well(供参数显示)

        private int _camWidth = 2592, _camHeight = 1944;  // MVC2000 原生分辨率(参考图实测)，勿用1600x1200否则画面被裁中央
        private List<(int z, double score)> _curve = new List<(int, double)>();

        public MainWindow()
        {
            InitializeComponent();
            AutoFocusTool.Logging.FileLogger.Init();
            _scanner.Log = Log;
            Closing += (s, e) => { AutoFocusTool.Logging.FileLogger.Info("APP", "程序关闭"); Cleanup(); };
            Log("程序启动。先【扫描设备】，选舱室后【连接】。");
        }

        // ───────────────────────── 日志 ─────────────────────────
        private void Log(string msg)
        {
            AutoFocusTool.Logging.FileLogger.Info("RUN", msg);
            void Append()
            {
                string line = $"{DateTime.Now:HH:mm:ss} {msg}\n";
                TxtLog.AppendText(line);
                TxtLog.ScrollToEnd();
            }
            if (Dispatcher.CheckAccess()) Append();
            else Dispatcher.BeginInvoke((Action)Append);
        }

        /// <summary>记录界面操作（ACTION级落盘 + 界面日志）。</summary>
        private void LogAction(string msg)
        {
            AutoFocusTool.Logging.FileLogger.Action("UI", msg);
            void Append()
            {
                string line = $"{DateTime.Now:HH:mm:ss} ▶ {msg}\n";
                TxtLog.AppendText(line);
                TxtLog.ScrollToEnd();
            }
            if (Dispatcher.CheckAccess()) Append();
            else Dispatcher.BeginInvoke((Action)Append);
        }

        // ───────────────────────── 扫描设备 ─────────────────────────
        private async void BtnScan_Click(object sender, RoutedEventArgs e)
        {
            LogAction("点击 扫描设备");
            BtnScan.IsEnabled = false;
            Log("开始扫描设备（枚举相机 + 扫串口握手）...");
            try
            {
                var houses = await Task.Run(() => _scanner.ScanAll());
                _houses = houses;
                CmbHouse.Items.Clear();
                foreach (var h in houses)
                    CmbHouse.Items.Add(h.ToString());
                if (houses.Count > 0)
                {
                    CmbHouse.SelectedIndex = 0;
                    Log($"扫描完成，发现 {houses.Count} 个舱室。");
                }
                else
                {
                    Log("未发现舱室。检查串口连接/相机USB/驱动。");
                }
            }
            catch (Exception ex)
            {
                Log($"扫描异常: {ex.Message}");
            }
            finally
            {
                BtnScan.IsEnabled = true;
            }
        }

        // ───────────────────────── 连接 / 断开 ─────────────────────────
        private void BtnConnect_Click(object sender, RoutedEventArgs e)
        {
            LogAction($"点击 连接 舱室索引={CmbHouse.SelectedIndex}");
            int idx = CmbHouse.SelectedIndex;
            if (idx < 0 || idx >= _houses.Count)
            {
                Log("请先扫描并选择一个舱室。");
                return;
            }
            var h = _houses[idx];
            try
            {
                // 串口
                _motor = new HouseMotor(h.PortName) { Log = Log };
                if (!_motor.Open())
                {
                    Log($"串口 {h.PortName} 打开失败。");
                    _motor = null;
                    return;
                }
                _motor.MotorDelayMs = ParseInt(TxtMotorDelay.Text, 1500);

                // 相机（若配对到）
                if (h.HasCamera)
                {
                    _camera = new SerialCamera(h.CcdIndex, _camWidth, _camHeight, ParseInt(TxtExposure.Text, 400));
                    int init = _camera.Init(
                        (byte)ParseInt(TxtGainR.Text, 25),
                        (byte)ParseInt(TxtGainG.Text, 14),
                        (byte)ParseInt(TxtGainB.Text, 25));
                    if (init == 0)
                    {
                        _camera.SetOpMode(0); // 拍照模式
                        Log($"相机#{h.CcdIndex} 已连接。");
                    }
                    else
                    {
                        Log($"相机#{h.CcdIndex} 初始化失败(code={init})，仅串口可用。");
                        _camera.Dispose();
                        _camera = null;
                    }
                }
                else
                {
                    Log("该舱室未配对相机，仅串口可用。");
                }

                _current = h;
                TxtConnState.Text = $"已连接 舱室{h.HouseSn}";
                TxtConnState.Foreground = Brushes.LightGreen;
                ControlPanel.IsEnabled = true;
                BtnConnect.IsEnabled = false;
                BtnDisconnect.IsEnabled = true;
                BtnScan.IsEnabled = false;
                InitWellSelectors();   // 填充well下拉 + 16个勾选框
                RefreshPositions();
            }
            catch (Exception ex)
            {
                Log($"连接异常: {ex.Message}");
            }
        }

        private void BtnDisconnect_Click(object sender, RoutedEventArgs e)
        {
            LogAction("点击 断开");
            Cleanup();
            TxtConnState.Text = "未连接";
            TxtConnState.Foreground = Brushes.Salmon;
            ControlPanel.IsEnabled = false;
            BtnConnect.IsEnabled = true;
            BtnDisconnect.IsEnabled = false;
            BtnScan.IsEnabled = true;
            Log("已断开。");
        }

        private void Cleanup()
        {
            try { _liveCts?.Cancel(); } catch { }
            try { _scanCts?.Cancel(); } catch { }
            try { if (_motor != null && _camera != null) _motor.CloseLED(); } catch { }
            try { _camera?.Dispose(); } catch { }
            try { _motor?.Dispose(); } catch { }
            _camera = null;
            _motor = null;
            _current = null;
        }

        private static int ParseInt(string s, int def)
            => int.TryParse(s?.Trim(), out int v) ? v : def;
    }
}