from typing import Tuple

from .base import View
from .button_interface import ButtonInterface
from .list_select import ListItem, CarouselView

from PIL import ImageDraw, Image


def _make_text_item(text):
    return ListItem(lambda draw, pos, fill, t=text, **kw: draw.text(pos, str(t), fill=fill, **kw))


class MenuView(View, ButtonInterface):

    def __init__(self, parent, im_size, center,
                 bluetooth_pair_command=None,
                 deactivate_command=None):
        self.deactivate_command = deactivate_command
        self.bluetooth_pair_command = bluetooth_pair_command
        self.item_list = CarouselView(render_height=124, large_font_size=20)
        self._actions = [
            ("BT Pair", self.bluetooth_pair_command),
        ]
        self.item_list.items = [_make_text_item(label) for label, _ in self._actions]
        super().__init__(parent, im_size, center)

    def update_weight(self, weight: float) -> Image.Image:
        im = self.bkg_im.copy()
        draw = ImageDraw.Draw(im)
        self.item_list.render(draw, y_start=10)
        return im

    def left_press(self):
        self.item_list.select_previous()

    def left_long_press(self):
        self.deactivate_command()

    def right_press(self):
        self.item_list.select_next()

    def right_long_press(self):
        _, action = self._actions[self.item_list.selected_index]
        if action:
            action()

    def has_button(self) -> Tuple[bool, bool, bool, bool]:
        return True, True, True, True

    def render_left_press(self, draw, x, y):
        draw.regular_polygon((x, y + 2, 5), 3, fill='black')

    def render_left_long_press(self, draw, x, y):
        draw.text((x, y - 5), 'Back', fill='black')

    def render_right_press(self, draw, x, y):
        draw.regular_polygon((x, y + 4, 5), 3, fill='black', rotation=180)

    def render_right_long_press(self, draw, x, y):
        draw.text((x - 30, y - 5), 'Select', fill='black')