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 System.Threading;
using PaintDotNet.Camera;
using PaintDotNet.ImageCollect;

namespace PaintDotNet.Preview2
{
    public partial class ExposureSbControl : UserControl
    {
        private ICamera m_camera => CameraManager.CurrentCamera;
        private CameraParamModel.ParameterSets _settings
        {
            get
            {
                return CameraConfigs.Settings;
            }
        }
        private double _exposureValue;

        private void InitializeLanguageText()
        {
            this.cmpTarget.Caption = PdnResources.GetString("Menu.strength.text");///PdnResources.GetString("Menu.Exposurepercentage.text");
            lblExposure.Text = PdnResources.GetString("Menu.timeofexposure.text") + ":";

            this.groupBox1.Text = PdnResources.GetString("Menu.timeofexposure.text");
            this.ckbAutoExposure.Text = PdnResources.GetString("Menu.auto-exposure.text");
            this.btnAutoExposureOnce.Text = PdnResources.GetString("Menu.Oneautomaticexposure.Text");

            this.groupBox2.Text = PdnResources.GetString("Menu.Gainvalueadjustment.text");
            this.cmpGain.Caption = PdnResources.GetString("Menu.imagecapture.adjust.Gain.text");
        }

        public ExposureSbControl()
        {
            InitializeComponent();
        }


        public void Initialize()
        {
            InitializeLanguageText();
            if (m_camera.IsOpen())
            {
                ckbAutoExposure.Checked = m_camera.AutoExposure == 1;// _settings.ATExposure == 1;
                InitializeExposure();

                // 亮度
                Range range = m_camera.GetTargetRange();
                cmpTarget.Max = (int)range.Max;
                cmpTarget.Min = (int)range.Min;
                cmpTarget.OnValueChange += CmpTarget_OnValueChange;
                cmpTarget.Tag = range;
                cmpTarget.Value = m_camera.Target;

                //增益
                range = m_camera.GetGlobalGainRange();
                cmpGain.Max = (int)range.Max;
                cmpGain.Min = (int)range.Min;
                cmpGain.IsRangeVisible = false;
                cmpGain.OnValueChange += CmpGain_OnValueChange;
                cmpGain.Value = m_camera.Gain;
                if (ckbAutoExposure.Checked)
                {
                    SetAutoExposure();
                }
                else
                {
                    SetFixedExposure();
                }
            }
            else
            {
                btnLog_Click(null, null);//默认log 按下
                cmbExpUnit.SelectedIndex = 1;
                UpdateTimeRange();
            }
        }


        public void UpdateSettings()
        {
            ckbAutoExposure.Checked = _settings.ATExposure == 1;
            cmpTarget.Value = m_camera.Target;
            var value = m_camera.ExposureTime;
            cmpGain.Value = m_camera.Gain;

            UpdateTimeDisplay(value);
            UpdateTimeBar(value);
        }

        private void CmpGain_OnValueChange(int value)
        {
            m_camera.Gain = value;
            _settings.GlobalGain = value;
        }

        private void CmpTarget_OnValueChange(int value)
        {
            if (!ckbAutoExposure.Checked)
            {
                new Thread(() =>
                   {
                       m_camera.AutoExposure = 1;
                       m_camera.Target = value;
                       Thread.Sleep(500);
                       this.Invoke(new Action(OnTimerAutoExposure));
                       Thread.Sleep(500);
                       this.Invoke(new Action(OnTimerAutoExposure));
                       m_camera.AutoExposure = 0;
                   }).Start();
            }
            else
            {
                _settings.Brightness = value;
                m_camera.Target = value;
            }
        }

        #region Exposure
        Range _expRange;
        private void InitializeExposure()
        {
            _expRange = m_camera.GetExposureTimeRange();
            btnLog_Click(null, null);//默认log 按下
            var value = m_camera.ExposureTime;
            cmbExpUnit.SelectedIndex = 1;
            UpdateTimeRange();
            UpdateTimeDisplay(value);
            UpdateTimeBar(value);
        }
        /// <summary>
        /// 130us~100ms
        /// </summary>
        Range _rangeUs = new Range() { Min = 130, Max = 1000 };
        /// <summary>
        /// 130us~2s
        /// </summary>
        Range _rangeMs = new Range() { Min = 130, Max = 1000000 };
        /// <summary>
        /// 100ms~60s
        /// </summary>
        Range _rangeS = new Range() { Min = 1000/*ms*/, Max = 60000 /*ms*/};

        double _log = 1.05;
        void UpdateTimeRange()
        {
            if (_isLog)
            {
                if (cmbExpUnit.SelectedIndex == 0)
                {
                    tkbExposure.Minimum = (int)Math.Log(_rangeUs.Min, 1.05);
                    tkbExposure.Maximum = (int)Math.Log(_rangeUs.Max, 1.05);
                    lblExpMin.Text = _rangeUs.Min + "us";
                    lblExpMax.Text = _rangeUs.Max / 1000 + "ms";
                }
                else if (cmbExpUnit.SelectedIndex == 1)
                {
                    tkbExposure.Minimum = (int)Math.Log(_rangeMs.Min, 1.05);
                    tkbExposure.Maximum = (int)Math.Log(_rangeMs.Max, 1.05);
                    lblExpMin.Text = _rangeMs.Min + "us";
                    lblExpMax.Text = _rangeMs.Max / 1000000 + "s";
                }
                else
                {
                    tkbExposure.Minimum = (int)Math.Log(_rangeS.Min, 1.05);
                    tkbExposure.Maximum = (int)Math.Log(_rangeS.Max, 1.05);
                    lblExpMin.Text = _rangeS.Min / 1000 + "s";
                    lblExpMax.Text = _rangeS.Max / 1000 + "s";
                }
            }
            else
            {
                if (cmbExpUnit.SelectedIndex == 0)//130us~1ms
                {
                    tkbExposure.Minimum = (int)_rangeUs.Min;
                    tkbExposure.Maximum = (int)_rangeUs.Max;
                    lblExpMin.Text = _rangeUs.Min + "us";
                    lblExpMax.Text = _rangeUs.Max / 1000 + "ms";
                }
                else if (cmbExpUnit.SelectedIndex == 1)//130us~1s
                {
                    tkbExposure.Minimum = (int)_rangeMs.Min;
                    tkbExposure.Maximum = (int)_rangeMs.Max;
                    lblExpMin.Text = _rangeMs.Min + "us";
                    lblExpMax.Text = _rangeMs.Max / 1000000 + "s";
                }
                else//1s~60s
                {
                    tkbExposure.Minimum = (int)_rangeS.Min;
                    tkbExposure.Maximum = (int)_rangeS.Max;
                    lblExpMin.Text = _rangeS.Min / 1000 + "s";
                    lblExpMax.Text = _rangeS.Max / 1000 + "s";
                }
            }
        }

        private void tkbExposure_Scroll(object sender, EventArgs e)
        {
            double value = tkbExposure.Value;

            if (_isLog)
            {
                if (cmbExpUnit.SelectedIndex == 0)
                {
                    if (value == tkbExposure.Minimum)
                        value = _rangeUs.Min;
                    else if (value == tkbExposure.Maximum)
                        value = _rangeUs.Max;
                    else
                        value = Math.Pow(_log, value);
                    value /= 1000;
                }
                else if (cmbExpUnit.SelectedIndex == 1)
                {
                    if (value == tkbExposure.Minimum)
                        value = _rangeMs.Min;
                    else if (value == tkbExposure.Maximum)
                        value = _rangeMs.Max;
                    else
                        value = Math.Pow(_log, value);
                    value /= 1000;
                }
                else if (cmbExpUnit.SelectedIndex == 2)
                {
                    if (value == tkbExposure.Minimum)
                        value = _rangeS.Min;
                    else if (value == tkbExposure.Maximum)
                        value = _rangeS.Max;
                    else
                        value = Math.Pow(_log, value);
                }
            }
            else
            {
                if (cmbExpUnit.SelectedIndex == 0)
                {
                    value = value / 1000;
                }
                else if (cmbExpUnit.SelectedIndex == 1)
                {
                    value = value / 1000;
                }
                else if (cmbExpUnit.SelectedIndex == 2)
                {
                }
            }
            Exposure_OnValueChange(value);
            UpdateTimeDisplay(value);
        }

        private void UpdateTimeDisplay(double value)
        {
            if (cmbExpUnit.SelectedIndex == 0)
            {
                txbExpTime.Text = (int)(value * 1000) + "";
            }
            else if (cmbExpUnit.SelectedIndex == 1)
            {
                txbExpTime.Text = value.ToString("f2");
            }
            else if (cmbExpUnit.SelectedIndex == 2)
            {
                txbExpTime.Text = (value / 1000).ToString("f2");
            }
        }
        private void UpdateTimeBar(double value)
        {
            if (value == 0)
                return;
            Range range = _rangeMs;
            if (cmbExpUnit.SelectedIndex == 0)
            {
                range = _rangeUs; value *= 1000;
            }
            else if (cmbExpUnit.SelectedIndex == 1)
            {
                range = _rangeMs; value *= 1000;
            }
            else if (cmbExpUnit.SelectedIndex == 2)
            {
                range = _rangeS;
            }
            else
            { return; }
            value = Math.Max(range.Min, Math.Min(range.Max, value));
            value = _isLog ? Math.Log(value, _log) : value;
            try
            {
                tkbExposure.Value = (int)value;
            }
            catch { }
        }
        private void Exposure_OnValueChange(double obj)
        {
            _settings.LNExposure = obj;
            m_camera.ExposureTime = obj;
        }
        private void Exposure_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == (char)Keys.Delete)
            {
                if (txbExpTime.Text.Contains("."))
                    e.Handled = true;
                return;
            }
            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(txbExpTime.Text);
                    if (cmbExpUnit.SelectedIndex == 0)
                    {
                        value = value / 1000;
                    }
                    else if (cmbExpUnit.SelectedIndex == 1)
                    {
                    }
                    else if (cmbExpUnit.SelectedIndex == 2)
                    {
                        value = value * 1000;
                    }

                    value = Math.Min(_expRange.Max, Math.Max(_expRange.Min, value));

                    if (cmbExpUnit.SelectedIndex == 0)
                    {
                        txbExpTime.Text = (int)(value * 1000) + "";
                    }
                    else if (cmbExpUnit.SelectedIndex == 1)
                    {
                        txbExpTime.Text = value.ToString("f2");
                    }
                    else if (cmbExpUnit.SelectedIndex == 2)
                    {
                        txbExpTime.Text = (value / 1000).ToString("f2");
                    }

                    UpdateTimeDisplay(value);
                    UpdateTimeBar(value);
                    Exposure_OnValueChange(value);
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
        }
        #endregion

        #region Auto/Fixed Exposure
        public void OnTimerAutoExposure()
        {
            _exposureValue = m_camera.ExposureTime;
            cmpGain.Value = m_camera.Gain;
            UpdateTimeDisplay(_exposureValue);
            UpdateTimeBar(_exposureValue);
        }

        private void ckbAutoExposure_Click(object sender, EventArgs e)
        {
            var isAuto = ckbAutoExposure.Checked;
            if (isAuto)
            {
                SetAutoExposure();
            }
            else
            {
                SetFixedExposure();
            }
        }

        private void btnAutoExposureOnce_Click(object sender, EventArgs e)
        {
            SetAutoExposure();
            ckbAutoExposure.Checked = false;
            new Thread(() =>
            {
                Thread.Sleep(1000);
                SetFixedExposure();
                this.Invoke(new Action(OnTimerAutoExposure));
            }).Start();
        }

        void SetAutoExposure()
        {
            _settings.ATExposure = 1;
            m_camera.AutoExposure = 1;
            //自动曝光恢复默认Gain（增益）
            var defGain = 0;
            m_camera.Gain = defGain;
        }

        void SetFixedExposure()
        {
            _settings.ATExposure = 0;
            m_camera.AutoExposure = 0;
            _settings.LNExposure = m_camera.ExposureTime;
        }
        #endregion

        /// <summary>
        /// 刷新控件状态
        /// </summary>
        public void UpdateDisplay()
        {
            var isAuto = _settings.ATExposure == 1;
            ckbAutoExposure.Checked = isAuto;
            tkbExposure.Enabled = !isAuto;
            txbExpTime.Enabled = !isAuto;
            cmpGain.Enabled = !isAuto;
            //  cmpTarget.Enabled = isAuto;
            if (isAuto)//固定曝光
            {
                OnTimerAutoExposure();
            }
        }

        bool _isLog = false;
        private void btnLog_Click(object sender, EventArgs e)
        {
            _isLog = !_isLog;
            if (_isLog)
            {
                btnLog.BackColor = CommonDefine.Blue;
                btnLog.FlatStyle = FlatStyle.Flat;
            }
            else
            {
                btnLog.BackColor = SystemColors.Control;
                btnLog.FlatStyle = FlatStyle.Standard;
            }
            UpdateTimeRange();
            OnTimerAutoExposure();
        }

        private void cmbExpUnit_SelectedIndexChanged(object sender, EventArgs e)
        {
            UpdateTimeRange();
            OnTimerAutoExposure();
        }
    }
}