"""Simple full-screen clock."""

import time

from PIL import Image, ImageDraw

from screens.base import Screen
from screens.render_utils import load_font, text_width

LINE_GAP = 0.04  # fraction of min(width, height) between the time and date lines

WEEKDAYS_DE = ["Montag", "Dienstag", "Mittwoch", "Donnerstag", "Freitag", "Samstag", "Sonntag"]
MONTHS_DE = [
    "Januar", "Februar", "März", "April", "Mai", "Juni",
    "Juli", "August", "September", "Oktober", "November", "Dezember",
]


class ClockScreen(Screen):
    id = "clock"
    display_name = "Clock"
    poll_interval = 30

    def check(self, settings: dict):
        return time.strftime("%H:%M")

    def render(self, state, settings: dict, resolution: tuple[int, int]) -> Image.Image:
        width, height = resolution
        image = Image.new("RGB", (width, height), "white")
        draw = ImageDraw.Draw(image)

        now = time.localtime()
        time_str = state or time.strftime("%H:%M", now)
        date_str = f"{WEEKDAYS_DE[now.tm_wday]}, {now.tm_mday}. {MONTHS_DE[now.tm_mon - 1]}"

        scale = min(width, height)
        time_font = load_font(size=int(scale * 0.32), bold=True)
        date_font = load_font(size=int(scale * 0.06))
        gap = int(scale * LINE_GAP)

        time_left, time_top, time_right, time_bottom = draw.textbbox((0, 0), time_str, font=time_font)
        time_h = time_bottom - time_top
        date_left, date_top, date_right, date_bottom = draw.textbbox((0, 0), date_str, font=date_font)
        date_h = date_bottom - date_top

        block_h = time_h + gap + date_h
        block_top = (height - block_h) / 2

        tw = time_right - time_left
        draw.text(((width - tw) / 2, block_top - time_top), time_str, font=time_font, fill="black")

        dw = date_right - date_left
        draw.text(((width - dw) / 2, block_top + time_h + gap - date_top), date_str, font=date_font, fill=(90, 90, 90))

        return image