using Aurora.Api;
using VisionCommon;
using System;
using System.Linq;
using System.Windows;
using System.Reactive.Linq;
using DevExpress.Data.Extensions;

namespace VisionUI.Camera {
    /// <summary>
    /// 카메라 Usercontrol 매니저
    /// </summary>
    public class CameraUcManager {
        private static Logger _Logger = new Logger("CameraUcManager");
        private static object LockObj = new object();

        private static CameraUcManager _instance = null;
        /// <summary>
        /// 싱글톤 패턴 객체
        /// </summary>
        public static CameraUcManager Instance {
            get {
                lock (LockObj) {
                    if (_instance == null) {
                        _instance = new CameraUcManager();
                    }
                    return _instance;
                }
            }
        }

        private CameraUcManager() {
            SetObservable();
        }

        private void SetObservable() {
            VisionEnv.AuroraEnv.EventObservable.AsObservable(VisionEventId.SHOW_FOV_CAMERA_VIEW_WINDOW).
                Subscribe(msg => ShowFovCameraViewWindow(msg));

            var observable = VisionEventId.GetRecipeActivatedObservable();
            observable.Subscribe(_ => CloseFovCameraViewWindows());
        }

        private void ShowFovCameraViewWindow(EventMessage msg) {
            FovCameraViewWindowParam fovCameraViewWindowParam = msg.Param as FovCameraViewWindowParam;
            ShowFovCameraViewWindow(fovCameraViewWindowParam.fovInfo, fovCameraViewWindowParam.displayType);
        }

        /// <summary>
        /// 개별 카메라 뷰 윈도우 띄우기
        /// </summary>
        ///
        public void ShowFovCameraViewWindow(FovInfo fovInfo, eDisplayType displayType) {
            try {
                CamViewWindowUtil.SetFovCamViewWindowActivated(fovInfo, displayType, true);

                Application.Current.Dispatcher.BeginInvoke(
                    new System.Action(() => {
                        var cameraViewWindow = new CameraViewWindow(fovInfo, displayType);
                        cameraViewWindow.Title = CamViewWindowUtil.GetFovCamViewWindowTitle(fovInfo, displayType);
                        cameraViewWindow?.Show();
                        cameraViewWindow.Activate();
                    }));
            }
            catch (Exception e) {
                _Logger.FuncE(e.Message);
            }
        }

        /// <summary>
        /// 떠있는 개별 카메라 뷰 모두 닫기
        /// </summary>
        public void CloseFovCameraViewWindows() {
            Application.Current.Dispatcher.BeginInvoke(
                new System.Action(() => {
                    foreach (Window window in Application.Current.Windows) {
                        if (window.Title.Contains(VisionKeys.Title_FovCameraViewWindow)) {
                            window.Close();
                        }
                    }
                }));
        }

        /// <summary>
        /// 메인 카메라 윈도우 보여주기
        /// </summary>
        public void ShowMainCameraViewWindow() {
            try {
                Application.Current.Dispatcher.BeginInvoke(
                    new Action(() => {
                        if (!MainCameraViewWindow.Instance.IsVisible) {
                            System.Windows.Forms.Screen Monitor = System.Windows.Forms.Screen.AllScreens.Where(s => s.Primary).FirstOrDefault();
                            if (VisionSettingManager.VisionSetting.SetPopupMonitor != eMonitor.Primary_MainMonitor) {
                                // SubMonitor - Not Primary
                                if (VisionSettingManager.VisionSetting.SetPopupMonitor == eMonitor.NotPrimary_SubMonitor) {
                                    Monitor = System.Windows.Forms.Screen.AllScreens.Where(s => !s.Primary).FirstOrDefault() ?? Monitor;
                                }
                                // SelectMonitor
                                else {
                                    System.Windows.Forms.Screen.AllScreens.ToList().TryGetValue((int)VisionSettingManager.VisionSetting.SetPopupMonitor, out System.Windows.Forms.Screen findMonitor);
                                    Monitor = findMonitor ?? Monitor;
                                }
                            }

                            if (Monitor != null) {
                                var workingArea = Monitor.WorkingArea;
                                MainCameraViewWindow.Instance.WindowStartupLocation = WindowStartupLocation.Manual;
                                MainCameraViewWindow.Instance.WindowState = WindowState.Normal;
                                MainCameraViewWindow.Instance.Left = workingArea.Left;
                                MainCameraViewWindow.Instance.Top = workingArea.Top;
                                MainCameraViewWindow.Instance.WindowState = WindowState.Maximized;
                            }

                            MainCameraViewWindow.Instance?.Show();
                            MainCameraViewWindow.Instance.Activate();
                        }
                        else {
                            if (!MainCameraViewWindow.Instance.IsActive) {
                                MainCameraViewWindow.Instance.Activate();
                            }
                        }
                    }));
            }
            catch (Exception e) {
                _Logger.FuncE(e.Message);
            }
        }

        #region 카메라 라이브 On/Off
        /// <summary>
        /// 카메라 라이브 전체 켜기
        /// </summary>
        /// <param name="displayType">라이브 전체 On시킬 디스플레이 타입</param>
        public void StartLiveAll(eDisplayType displayType) {
            try {
                foreach (FovInfo fovInfo in VisionRecipeManager.GetFovInfos()) {
                    StartLive(fovInfo, displayType);
                }
            }
            catch (Exception e) {
                _Logger.FuncE(e.Message);
            }
        }

        /// <summary>
        /// 카메라 라이브 전체 끄기
        /// </summary>
        public void StopLiveAll() {
            try {
                foreach (FovInfo fovInfo in VisionRecipeManager.GetFovInfos()) {
                    StopLive(fovInfo);
                }
            }
            catch (Exception e) {
                _Logger.FuncE(e.Message);
            }
        }

        /// <summary>
        /// 카메라 라이브 켜기
        /// </summary>
        /// <param name="fovInfo">FOV 정보</param>
        /// <param name="displayType">디스플레이 유형</param>
        public void StartLive(FovInfo fovInfo, eDisplayType displayType) {
            try {
                var camAgent = CameraAgentManager.GetCameraAgent(fovInfo);
                var camDisplay = CameraDisplayManager.GetDisplay(fovInfo, displayType);

                if (camAgent != null && !camAgent.IsLiveRunning()) {
                    camAgent.StartLive(camDisplay);
                }
            }
            catch (Exception e) {
                _Logger.FuncE(e.Message);
            }
        }

        /// <summary>
        /// 카메라 라이브 중지
        /// </summary>
        /// <param name="fovInfo">FOV 정보</param>
        public void StopLive(FovInfo fovInfo) {
            var camAgent = CameraAgentManager.GetCameraAgent(fovInfo);

            if (camAgent != null && camAgent.IsLiveRunning()) {
                camAgent.StopLive();
            }
        }
        #endregion
    }
}