import datetime
import tkinter
import PIL.Image, PIL.ImageTk
import tisgrabber as IC
from PIL import Image, ImageTk


class VideoRec:

    _shock_delivery = False

    def __init__(self, window):
        self.window = window

        # Create the camera object.
        self.camera = IC.TIS_CAM()

        self.devices = self.camera.GetDevices()
        for i in range(len(self.devices)):
            print(str(i) + " : " + str(self.devices[i]))

        self.camera.ShowDeviceSelectionDialog()
        self.frame_rate = 100                            # fixed framerate of 100Hz
        self.camera.SetPropertySwitch("Exposure","Auto",0)
        self.camera.SetPropertyAbsoluteValue("Exposure","Value",0.01)       # fixed exposure time of 10ms
        self.camera.SetFrameRate(self.frame_rate)
        self.record = False
        self.__createWidgets()

        # icon
        ico = Image.open('img\\Arrenberg-Lab-Logo-karminrot-64x41.png')
        photo = ImageTk.PhotoImage(ico)
        self.window.wm_iconphoto(False, photo)

    def __createWidgets(self):
        # create canvas
        self.canvas = tkinter.Canvas(self.window, width=self.camera.get_video_format_width(),
                                     height=self.camera.get_video_format_height())
        self.canvas.grid(column=0, row=0, columnspan=4)

        # create buttons
        self.btn_record = tkinter.Button(self.window, text="start recording", command=self.__toggleStartRecord)
        self.btn_record.grid(column=1, row=1, ipadx=20, ipady=5, padx=3, pady=5)

        self.btn_snap = tkinter.Button(self.window, text="snapshot", command=self.saveSnapshot)
        self.btn_snap.grid(column=2, row=1, ipadx=20, ipady=5, padx=3, pady=5)

        self.lbl_record = tkinter.Label(self.window, text="", fg='red')
        self.lbl_record.grid(column=0, row=1, ipadx=20, ipady=5, padx=3, pady=5)

    def __flashRecord(self):
        bg = self.lbl_record.cget('background')
        fg = self.lbl_record.cget('foreground')
        self.lbl_record.config(bg=fg, fg=bg)
        if self.record:
            self.window.after(250, self.__flashRecord)

    def __toggleStartRecord(self):
        if self.btn_record['text'] == 'start recording':
            fourcc = cv2.VideoWriter_fourcc(*'MJPG')
            video_name = "recordings\\recording_" + str(datetime.datetime.now())
            video_name = video_name.replace(' ', '_')
            video_name = video_name.replace(':', '-')
            video_name = video_name.replace('.', '-')
            self.video_name = video_name + ".avi"
            self.writer = cv2.VideoWriter(self.video_name, fourcc, self.frame_rate, (self.camera.get_video_format_width(),
                                                                                self.camera.get_video_format_height()))
            self.record = True
            self.btn_record.config(text='stop recording')
            print('sys: start recording')
            self.lbl_record.config(text='RECORDING', fg='red', bg=self.window.cget("background"))
            self.__flashRecord()
        elif self.btn_record['text'] == 'stop recording':
            self.record = False
            self.writer.release()
            self.btn_record.config(text='start recording')
            print("sys: stop recording")
            self.lbl_record.config(text='', fg=self.window.cget("background"), bg=self.window.cget("background"))

    def saveSnapshot(self):
        snapshot_name = "snapshots\\snapshot_" + str(datetime.datetime.now())
        snapshot_name = snapshot_name.replace(' ', '_')
        snapshot_name = snapshot_name.replace(':', '-')
        snapshot_name = snapshot_name.replace('.', '-')
        cv2.imwrite(snapshot_name + ".png", self.image)
        print("sys: save snapshot")

    def openCamera(self):
        self.camera.StartLive(0)
        self.delay = 15
        self.__update()
        self.window.protocol("WM_DELETE_WINDOW", self.fakeClose)

    def __update(self):
        self.camera.SnapImage()
        self.image = self.camera.GetImage()

        cv2.putText(self.image, str(datetime.datetime.now()), (20, 40), cv2.FONT_HERSHEY_SIMPLEX, 0.35, (0, 0, 0,))

        if self._shock_delivery:
            cv2.putText(self.image, 'SHOCK', (20, 25), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255))
        if self.record:
            self.writer.write(self.image)

        self.photo = PIL.ImageTk.PhotoImage(image=PIL.Image.fromarray(self.image))
        self.canvas.create_image(0, 0, image=self.photo, anchor=tkinter.NW)

        self.window.after(self.delay, self.__update)

    def closeWindow(self):
        self.camera.StopLive()
        self.window.destroy()

    def fakeClose(self):
        pass