using System;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;

namespace AutoFocusTool
{
    // 电机控制：Z对焦轴 / 水平轴 / 位置刷新
    public partial class MainWindow
    {
        /// <summary>串口操作统一包装：置忙、后台执行、完成后刷新位置。</summary>
        private void MotorAction(string name, Func<bool> action)
        {
            if (_motor == null) return;
            if (_busy) { Log("串口忙，请稍候。"); return; }
            int motorDelay = ParseInt2(TxtMotorDelay.Text, 1500); // UI线程先读
            Task.Run(() =>
            {
                _busy = true;
                try
                {
                    if (_motor != null) _motor.MotorDelayMs = motorDelay;
                    bool ok = action();
                    Log($"{name} {(ok ? "完成" : "失败")}");
                }
                catch (Exception ex) { Log($"{name} 异常: {ex.Message}"); }
                finally { _busy = false; }
                RefreshPositions();
            });
        }

        // ── Z 对焦轴 ──
        private void BtnZUp_Click(object sender, RoutedEventArgs e)
        {
            int step = ParseInt2(TxtZStep.Text, 128);
            LogAction($"点击 Z正转, 步距={step}");
            MotorAction($"Z正转 {step}步", () => _motor.VerticalForward(step));
        }

        private void BtnZDown_Click(object sender, RoutedEventArgs e)
        {
            int step = ParseInt2(TxtZStep.Text, 128);
            LogAction($"点击 Z反转, 步距={step}");
            MotorAction($"Z反转 {step}步", () => _motor.VerticalBackward(step));
        }

        private void BtnZReset_Click(object sender, RoutedEventArgs e)
        {
            LogAction("点击 Z复位");
            MotorAction("Z复位", () => _motor.VerticalReset());
        }

        private void BtnZMoveTo_Click(object sender, RoutedEventArgs e)
        {
            int abs = ParseInt2(TxtZAbs.Text, 0);
            LogAction($"点击 Z绝对移动, 目标={abs}");
            MotorAction($"Z绝对移动→{abs}", () => _motor.VerticalMoveTo(abs));
        }

        // ── 水平轴 ──
        private void BtnHFwd_Click(object sender, RoutedEventArgs e)
        {
            int step = ParseInt2(TxtHStep.Text, 100);
            LogAction($"点击 水平正转, 步距={step}");
            MotorAction($"水平正转 {step}步", () => _motor.HorizontalForward(step));
        }

        private void BtnHBwd_Click(object sender, RoutedEventArgs e)
        {
            int step = ParseInt2(TxtHStep.Text, 100);
            LogAction($"点击 水平反转, 步距={step}");
            MotorAction($"水平反转 {step}步", () => _motor.HorizontalBackward(step));
        }

        private void BtnHReset_Click(object sender, RoutedEventArgs e)
        {
            LogAction("点击 水平复位");
            MotorAction("水平复位", () => _motor.HorizontalReset());
        }

        // ── 读位置并显示 ──
        private void RefreshPositions()
        {
            if (_motor == null) return;
            Task.Run(() =>
            {
                if (_busy) return;
                _busy = true;
                int z = -1, hpos = -1;
                try
                {
                    z = _motor.ReadVerticalPosition();
                    hpos = _motor.ReadHorizontalPosition();
                }
                catch (Exception ex) { Log($"读位置异常: {ex.Message}"); }
                finally { _busy = false; }
                _lastZ = z; _lastH = hpos;
                Dispatcher.Invoke(() => { TxtZ.Text = $"Z: {z}  水平: {hpos}"; UpdateParamDisplay(); });
            });
        }

        private static int ParseInt2(string s, int def)
            => int.TryParse(s?.Trim(), out int v) ? v : def;
    }
}