import PIL.Image
import PIL.ImageTk
import tkinter as tk

from constants import PROJECT_VIEW_NAME, FONT, PROJECTS_VIEW_NAME
from gestures.gesture_recognition import MyVideoCapture
from views.abstract_view import AbstractView


class ProjectView(tk.Frame, AbstractView):

    def __init__(self, parent, controller, main_view_controller):
        tk.Frame.__init__(self, parent)
        self.token = ''
        self.window = controller
        self.main_view_controller = main_view_controller
        self.delay = 20
        self.vid = None
        self.canvas = None
        self.index_label = None
        self.middle_label = None
        self.ring_label = None
        self.pinky_label = None
        self.back_button = None

    @staticmethod
    def get_view_name() -> str:
        return PROJECT_VIEW_NAME

    def start(self):
        self.vid = MyVideoCapture()

        self.canvas = tk.Canvas(self, width=self.vid.width, height=self.vid.height)
        self.canvas.pack()

        self.index_label = tk.Label(self, font=FONT)
        self.index_label.pack(anchor=tk.CENTER, expand=True)
        self.middle_label = tk.Label(self, font=FONT)
        self.middle_label.pack(anchor=tk.CENTER, expand=True)
        self.ring_label = tk.Label(self, font=FONT)
        self.ring_label.pack(anchor=tk.CENTER, expand=True)
        self.pinky_label = tk.Label(self, font=FONT)
        self.pinky_label.pack(anchor=tk.CENTER, expand=True)

        self.back_button = tk.Button(self, text="Back", font=FONT, command=lambda: self.back_to_projects_view())
        self.back_button.pack()

        self.update()

    def update(self):
        # Get a frame from the video source
        if self.vid is not None:
            fingers, frame, success = self.vid.get_frame()
            self.index_label['text'] = fingers['index']
            self.middle_label['text'] = fingers['middle']
            self.ring_label['text'] = fingers['ring']
            self.pinky_label['text'] = fingers['pinky']

            if success:
                self.photo = PIL.ImageTk.PhotoImage(image=PIL.Image.fromarray(frame))
            self.canvas.create_image(0, 0, image=self.photo, anchor=tk.NW)

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

    def back_to_projects_view(self):
        self.main_view_controller.show_frame(PROJECTS_VIEW_NAME)
        self.vid.release()
        self.destroy_components()

    def destroy_components(self):
        self.vid = None
        self.canvas.destroy()
        self.index_label.destroy()
        self.middle_label.destroy()
        self.ring_label.destroy()
        self.pinky_label.destroy()
        self.back_button.destroy()