using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using PaintDotNet.Base.SettingModel;
using TUCamera;

namespace PaintDotNet.ImageCollect.CameraComponent
{
    public partial class AdjustExposureControl : UserControl
    {
        private TUCamera.TUCamera m_camera;
        private CameraParamModel m_cameraParamModel;
        private System.Timers.Timer m_aeTimer;
        private bool m_use;

        private bool m_autoExposureOnce;
        private bool m_autoExposureComplete;

        private void InitializeLanguageText()
        {
            this.groupBox1.Text = PdnResources.GetString("Menu.timeofexposure.text");
            this.checkBoxAutoExposure.Text = PdnResources.GetString("Menu.auto-exposure.text");
            this.label6.Text = PdnResources.GetString("Menu.Exposurepercentage.text") + ":";
            this.label5.Text = PdnResources.GetString("Menu.timeofexposure.text") + ":";
            this.btnAutoExposureOnce.Text = PdnResources.GetString("Menu.Oneautomaticexposure.Text");
        }

        public AdjustExposureControl(CameraParamModel model, bool use)
        {
            m_use = use;
            m_camera = TUCameraManager.GetInstance().GetCurrentCamera();
            m_cameraParamModel = model;

            m_aeTimer = new System.Timers.Timer(1000);
            m_aeTimer.Elapsed += new System.Timers.ElapsedEventHandler(OnTimerAutoExposure);
            m_aeTimer.AutoReset = true;
            m_aeTimer.SynchronizingObject = this;
            m_aeTimer.Start();

            InitializeComponent();
            InitializeLanguageText();
            InitializeControlData();
        }

        public void ReLoad(CameraParamModel model, bool use)
        {
            m_cameraParamModel = model;
            m_use = use;
            UpdateConfigMode();
        }

        private void InitializeControlData()
        {
            if (m_camera.IsOpen())
            {
                // 曝光时间
                double aeMinVal = 0;
                double aeMaxVal = 0;
                double aeDftVal = 0;
                m_camera.GetExposureTimeRange(ref aeMinVal, ref aeMaxVal, ref aeDftVal);
                SetExposureBarRange(aeMinVal, aeMaxVal);
                lblBaoGuangMinVal.Text = ((int)aeMinVal).ToString() + "μs";
                lblBaoGuangMaxVal.Text = UpdateExposureTime((UInt64)aeMaxVal);
            }
        }

        private void UpdateConfigMode()
        {
            // 曝光时间
            int value = (int)(m_cameraParamModel.parame.LNExposure);
            SetExposureBarValue(value);
            DisplayExposureText(value);

            // 曝光百分比
            int preExposure = m_cameraParamModel.parame.Light;
            preExposure = preExposure < 0 ? 0 : preExposure > 255 ? 255 : preExposure;
            lightTBar.Value = preExposure;
            LightBox.Text = preExposure.ToString();

            UpdateExposureUI(m_cameraParamModel.parame.ATExposure);
        }

        /// <summary>
        /// 1:自动 ，0：手动
        /// </summary>
        private void UpdateExposureUI(int autoExposure)
        {
            ExposureTBar.Enabled = autoExposure != 1;
            ExposureBox.Enabled = autoExposure != 1;
            checkBoxAutoExposure.Checked = autoExposure == 1;
            m_camera.SetExposureMode((ExposureMode)autoExposure);
            m_cameraParamModel.parame.ATExposure = autoExposure;
        }

        double _log = 1.1;
        int _min;
        int _max;

        private int GetExposureBarValue()
        {
            var value = ExposureTBar.Value;
            if (ExposureTBar.Value == ExposureTBar.Minimum) return _min;
            if (ExposureTBar.Value == ExposureTBar.Maximum) return _max;
            return (int)Math.Pow(_log, value);
        }

        private void SetExposureBarValue(double value)
        {
            var ival = (int)Math.Log(Math.Max(_min, value), _log);
            ExposureTBar.Value = Math.Min(ival, ExposureTBar.Maximum);
        }

        private void SetExposureBarRange(double min, double max)
        {
            _min = (int)min;
            ExposureTBar.Minimum = (int)Math.Log(min, _log);
            _max = (int)max;
            ExposureTBar.Maximum = (int)Math.Log(max, _log); ;
        }

        public void OnTimerAutoExposure(object source, System.Timers.ElapsedEventArgs e)
        {
            if (m_autoExposureOnce)
            {
                checkBoxAutoExposure.Checked = false;
                m_autoExposureOnce = false;
                UpdateExposureUI(0);
              //  checkBoxAutoExposure_CheckedChanged(null, null);
            }
            else if (!checkBoxAutoExposure.Checked)
            {
                return;
            }
            double us = m_camera.GetExposureTime() * 1000;
            SetExposureBarValue(us);
            DisplayExposureText((int)us);
        }

        /// <summary>
        /// 曝光百分比滑块滑动事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Light_ValueChanged(object sender, System.EventArgs e)
        {
            m_camera.Light = lightTBar.Value;
            m_cameraParamModel.parame.Light = lightTBar.Value;
            LightBox.Text = lightTBar.Value + "";
        }

        /// <summary>
        /// 曝光时间滑块滑动事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Exposure_ValueChanged(object sender, System.EventArgs e)
        {
            int exposureTimeUSec = GetExposureBarValue();
            this.m_cameraParamModel.parame.LNExposure = exposureTimeUSec;
            DisplayExposureText(exposureTimeUSec);
            m_camera.SetExposureTime((ulong)(exposureTimeUSec));
        }

        private void checkBoxAutoExposure_CheckedChanged(object sender, EventArgs e)
        {
            int autoExposure = checkBoxAutoExposure.Checked ? 1 : 0;
            UpdateExposureUI(autoExposure);
            if (autoExposure == 0)
            {
                Light_ValueChanged(null, null);
            }
            else
            {
                m_autoExposureOnce = false;
            }
        }
        /// <summary>
        /// 一次自动曝光
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnAutoExposureOnce_Click(object sender, EventArgs e)
        {
            if (m_autoExposureComplete && checkBoxAutoExposure.Checked)
            {
                checkBoxAutoExposure.Checked = false;
            }
            else
            {
                if (checkBoxAutoExposure.Checked)
                {
                    checkBoxAutoExposure.Checked = false;
                }
                m_autoExposureOnce = true;
                UpdateExposureUI(1);
            }
        }

        /// <summary>
        /// 曝光时间内容输入后校验
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void baoGuangTBox_KeyPress(object sender, KeyPressEventArgs e)
        {

            if (!char.IsDigit(e.KeyChar) && (e.KeyChar != (char)Keys.Enter) && (e.KeyChar != (char)Keys.Back))  // 非数字键, 放弃该输入
            {
                e.Handled = true;
                return;
            }
            if (e.KeyChar == (char)Keys.Enter)
            {
                try
                {
                    double value = Convert.ToDouble(ExposureBox.Text);
                    switch (unitLabel.Text)
                    {
                        case "s":
                            value = value * 1000 * 1000;
                            break;
                        case "ms":
                            value = value * 1000;
                            break;
                    }
                    SetExposureBarValue(value);
                    Exposure_ValueChanged(null, null);
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
        }

        private void DisplayExposureText(int exposureTimeUSec)
        {
            decimal txtVale = 0;
            int sec = 0;
            int msec = 0;
            int usec = 0;
            m_camera.UpdateExposureTime(ref sec, ref msec, ref usec, (UInt64)exposureTimeUSec);
            if (sec > 0)
            {
                this.unitLabel.Text = "s";
                txtVale += sec;
            }
            if (msec > 0)
            {
                if (txtVale > 0)
                {
                    txtVale += ((decimal)msec / 1000);
                    this.unitLabel.Text = "s";
                    usec = 0; // 微秒舍掉不显示了
                }
                else
                {
                    this.unitLabel.Text = "ms";
                    txtVale += msec;
                }
            }
            if (usec > 0)
            {
                if (txtVale > 0)
                {
                    txtVale += ((decimal)usec / 1000);
                }
                else
                {
                    this.unitLabel.Text = "μs";
                    txtVale = usec;
                }
            }
            this.ExposureBox.Text = txtVale.ToString();
        }
        private string UpdateExposureTime(UInt64 exposureTime)
        {
            string str = "";
            int sec = 0;
            int msec = 0;
            int usec = 0;
            m_camera.UpdateExposureTime(ref sec, ref msec, ref usec, exposureTime);
            if (sec > 0)
            {
                str += sec + "s";
            }
            else if (msec > 0)
            {
                str += msec + "ms";
            }
            else if (usec > 0)
            {
                str += usec + "μs";
            }

            return str;
        }
    }
}