from typing import List
import logging


from PIL import Image, ImageDraw, ImageFont


from .screen import Screen


class Waveshare_233_SSD1305(Screen):
    def __init__(self):
        from drive import SSD1305

        self.type = "Waveshare 2.33 SSD1305 OLED"

        self.supports_custom_fonts = True

        self.ssd1305 = SSD1305.SSD1305()
        self.ssd1305.Init()

        self.width = self.ssd1305.width
        self.height = self.ssd1305.height
        self.image = Image.new('1', (self.width, self.height)) # Create new image with 1 bit colour
        self.draw = ImageDraw.Draw(self.image)

    def setDefaultFont(self):
        logging.debug("setting font to default font")
        self.font = ImageFont.load_default()

    def setFont(self, font, size):
        self.font_size = size
        self.font = ImageFont.truetype(font, size)

    def clearBuffer(self):
        self.draw.rectangle((0, 0, self.width, self.height), outline=0, fill=0)

    def displayOnScreen(self):
        self.ssd1305.getbuffer(self.image)
        self.ssd1305.ShowImage()

    def displayLines(self, lines: List[str], x_margin: int = 2):
    # displays text on the screen, the line that is first in the list is displayed on the top
        self.clearBuffer()
        self.clearScreen()

        x_start = x_margin
        y_start = 0
        x_padding = 0
        y_padding = 0
        for i, line in enumerate(lines):
            self.draw.text(
                (
                    x_start+(i*x_padding),
                    y_start+y_padding
                ),
                line,
                font=self.font,
                fill=255
            )
            bounding_box = self.draw.textbbox(
                (
                    (x_start+x_padding),
                    y_start+y_padding,
                ),
                line,
                font=self.font,
            )
            bottom = bounding_box[3]
            y_padding = bottom
        self.displayOnScreen()

    def clearScreen(self):
    # Used by parent class Screen
        buffer = Image.new('1', (self.width, self.height))
        draw = ImageDraw.Draw(self.image)
        # black rectangle to clear screen, without clearing buffer
        draw.rectangle((0, 0, self.width, self.height), outline=0, fill=0)
        self.ssd1305.getbuffer(buffer)
        self.ssd1305.ShowImage()