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 ExposureControl : 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.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 ExposureControl()
        {
            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();
                }
            }
        }

        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)
        {
            _settings.GlobalGain = value;
            m_camera.Target = value;
        }

        #region Exposure
        private void InitializeExposure()
        {
            Range range = m_camera.GetExposureTimeRange();
            tkbExposure.Tag = range;
            tkbExposure.Minimum = (int)Math.Log(range.Min * 1000, 1.1);
            tkbExposure.Maximum = (int)Math.Log(range.Max * 1000, 1.1);//毫秒转微秒
            var value = m_camera.ExposureTime;

            UpdateTimeDisplay(value);
            UpdateTimeBar(value);
        }

        private void tkbExposure_Scroll(object sender, EventArgs e)
        {
            double value = tkbExposure.Value;
            Range rang1 = tkbExposure.Tag as Range;
            if (value == tkbExposure.Minimum) value = rang1.Min;
            else if (value == tkbExposure.Maximum) value = rang1.Max;
            else value = Math.Pow(1.1, value) / 1000;//微秒转毫秒
            Exposure_OnValueChange(value);
            UpdateTimeDisplay(value);
        }

        private void UpdateTimeDisplay(double value)
        {
            txbUs.Text = (int)(value * 1000) % 1000 + "";
            txbMs.Text = (int)(value % 1000) + "";
            txbS.Text = (int)(value / 1000) % 1000 + "";
        }
        private void UpdateTimeBar(double value)
        {
            if (value == 0)
                return;
            int value1 = (int)Math.Log(value * 1000, 1.1);
            tkbExposure.Value = Math.Min(Math.Max(value1, tkbExposure.Minimum), tkbExposure.Maximum);
        }
        private void Exposure_OnValueChange(double obj)
        {
            _settings.LNExposure = obj;
            m_camera.ExposureTime = obj;
        }
        private void Exposure_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.ToInt32(txbUs.Text);
                    value += Convert.ToInt32(txbMs.Text) * 1000;
                    value += Convert.ToInt32(txbS.Text) * 1000 * 1000;
                    value /= 1000;
                    var range = tkbExposure.Tag as Range;
                    value = Math.Min(range.Max, Math.Max(range.Min, value));
                    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;
            pnlExposure.Enabled = !isAuto;
            cmpGain.Enabled = !isAuto;
            if (isAuto)//固定曝光
            {
                OnTimerAutoExposure();
            }
        }

    }
}