///
/// Copyright (c) 2017 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using log4net;
using Config.Entities;
using TBF.UiBridge;

namespace TBF.UI.Camera
{
    public partial class PicturesTabPageCtrl : UserControl
    {
        static readonly ILog log = LogManager.GetLogger(typeof(TBF.UI.MainWnd));

        CameraDisplayResolution resolution;
        IList<ICameraPicture> cameraPictures;

        public PicturesTabPageCtrl()
        {
            InitializeComponent();

            cameraPictures = new List<ICameraPicture>();
            if (Program.LocalSettings != null) resolution = Program.LocalSettings.Resolution;

            System.Windows.Forms.Timer timer;
            timer = new System.Windows.Forms.Timer();
            timer.Tick += (s, e) => { TimerTick(); };
            timer.Interval = 250;
            timer.Start();

			Bridge.ImageHandler += delegate(object sender, ImageEventArgs args)
			    {
				    if (InvokeRequired)
                        Invoke(new EventHandler<ImageEventArgs>(ShowImage), sender, args);
				    else
					    ShowImage(sender, args);
                };

            Bridge.CameraInfoHandler += delegate(object sender, CameraInfoEventArgs args)
                {
                    if (InvokeRequired)
                        Invoke(new EventHandler<CameraInfoEventArgs>(ShowInfo), sender, args);
                    else
                        ShowInfo(sender, args);
                };
        }

        private void TimerTick()
        {
            DateTime now = DateTime.Now;
            for (int i = 0; i < cameraPictures.Count; i++)
            {
                if (cameraPictures[i] != null) cameraPictures[i].UpdateLed(now);
            }
        }

        void ShowInfo(object sender, CameraInfoEventArgs args)
        {
            if (args.CameraIdx < cameraPictures.Count)
            {
                cameraPictures[args.CameraIdx].Caption = args.Info;
            }
            else if (args.CameraIdx == cameraPictures.Count)
            {
                UserControl ctrl;
                switch (resolution)
                {
                    default:
                    case CameraDisplayResolution.Small:  ctrl = new CameraPictureCtrl(); break;
                    case CameraDisplayResolution.Medium: ctrl = new CameraPictureCtrl2(); break;
                    case CameraDisplayResolution.Large:  ctrl = new CameraPictureCtrl3(); break;
                }   
                cameraPictures.Add(ctrl as ICameraPicture);
                picturesFlowLayoutPanel.Controls.Add(ctrl);
                (ctrl as ICameraPicture).Caption = args.Info;
            }
            else
            {
                log.ErrorFormat("Unexpected camera: Idx={0} Info={1}", args.CameraIdx, args.Info);
            }
        }

		void ShowImage(object sender, ImageEventArgs args)
		{
            if (args.CameraIdx < cameraPictures.Count && cameraPictures[args.CameraIdx] != null)
            {
                cameraPictures[args.CameraIdx].NewImage = args.Image;
			}
		}

        /// <summary>
        /// Increase image resolution
        /// </summary>
        private void plusButton_Click(object sender, EventArgs e)
        {
            if (resolution < CameraDisplayResolution.Count - 1)
            {
                Program.LocalSettings.Resolution = ++resolution;
                RedrawPictures();
            }
        }

        /// <summary>
        /// Decrease image resolution
        /// </summary>
        private void minusButton_Click(object sender, EventArgs e)
        {
            if (resolution > 0)
            {
                Program.LocalSettings.Resolution = --resolution;
                RedrawPictures();
            }
        }

        void RedrawPictures()
        {
            int nrControls = cameraPictures.Count;
            ICameraPicture[] oriCamPictures = new ICameraPicture[nrControls];
            for (int i = 0; i < nrControls; i++) oriCamPictures[i] = cameraPictures[i];

            cameraPictures.Clear();
            picturesFlowLayoutPanel.Controls.Clear();

            for (int i = 0; i < nrControls; i++)
            {
                UserControl ctrl;
                switch (resolution)
                {
                    default:
                    case CameraDisplayResolution.Small:  ctrl = new CameraPictureCtrl(oriCamPictures[i]); break;
                    case CameraDisplayResolution.Medium: ctrl = new CameraPictureCtrl2(oriCamPictures[i]); break;
                    case CameraDisplayResolution.Large:  ctrl = new CameraPictureCtrl3(oriCamPictures[i]); break;
                }

                cameraPictures.Add(ctrl as ICameraPicture);
                picturesFlowLayoutPanel.Controls.Add(ctrl);
            }
        }


        private void grabButton_Click(object sender, EventArgs e)
        {
            Bridge.OnCameraUICmd(this, new CameraUICmdEventArgs(CameraUICmd.Grab, -1));
        }

        private void liveButton_Click(object sender, EventArgs e)
        {
            Bridge.OnCameraUICmd(this, new CameraUICmdEventArgs(CameraUICmd.Live, -1));
        }

        private void stopButton_Click(object sender, EventArgs e)
        {
            Bridge.OnCameraUICmd(this, new CameraUICmdEventArgs(CameraUICmd.Stop, -1));
        }

        private void saveImageButton_Click(object sender, EventArgs e)
        {
            Bridge.OnCameraUICmd(this, new CameraUICmdEventArgs(CameraUICmd.SaveImage, -1));
        }
    }
}