using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ThridLibray;

namespace LibCamera
{
    public class CameraDriver : ICameraDriver
    {
        public event OnCameraImage OnCameraImage;
        private IDevice m_dev_cam;
        private bool camOpened;
        public void Initialize(string serial, string pixelFormat, double exposure, double gain)
        {
            try
            {
                camOpened = false;
                List<IDeviceInfo> deviceList = Enumerator.EnumerateDevices(); 
                m_dev_cam = Enumerator.GetDeviceByKey(serial);
                if (m_dev_cam == null)
                    return;
                if (!m_dev_cam.Open())
                    return;
                using (IEnumParameter p = m_dev_cam.ParameterCollection[ParametrizeNameSet.ImagePixelFormat])
                {
                    p.SetValue(pixelFormat);
                }
                using (IFloatParameter p = m_dev_cam.ParameterCollection[ParametrizeNameSet.ExposureTime])
                {
                    p.SetValue(exposure);
                }
                using (IFloatParameter p = m_dev_cam.ParameterCollection[ParametrizeNameSet.GainRaw])
                {
                    p.SetValue(gain);
                }
                using (IEnumParameter p = m_dev_cam.ParameterCollection[ParametrizeNameSet.AcquisitionMode])
                {
                    p.SetValue("Continuous");
                }
                using (IEnumParameter p = m_dev_cam.ParameterCollection[ParametrizeNameSet.TriggerMode])
                {
                    p.SetValue("On");
                }

                m_dev_cam.StreamGrabber.ImageGrabbed += StreamGrabber_ImageGrabbed;
                m_dev_cam.TriggerSet.Open(TriggerSourceEnum.Software);
                if (!m_dev_cam.GrabUsingGrabLoopThread())
                    return;
                camOpened = true;
            }
            catch (Exception ex)
            {
                camOpened = false;
                m_dev_cam = null;
            }
        }
        private void StreamGrabber_ImageGrabbed(object sender, GrabbedEventArgs e)
        {
            OnCameraImage?.Invoke(e.GrabResult.ToBitmap(true));
        }
        public void Stop()
        {
            if (!IsOpened())
                return;
            m_dev_cam.StreamGrabber.ImageGrabbed -= StreamGrabber_ImageGrabbed;
            m_dev_cam.ShutdownGrab();
            m_dev_cam.Dispose();
            m_dev_cam = null;
        }
        public void GrabImage()
        {
            if (!IsOpened())
                return;
            m_dev_cam?.ExecuteSoftwareTrigger();
        }
        public bool IsOpened()
        {
            return m_dev_cam != null && camOpened;
        }
    }
}