from typing import List, Tuple

from PIL import Image, ImageFont, ImageDraw
from hbutils.color import rnd_colors, Color


def plot_detection(pil_img: Image.Image, detection: List[Tuple[Tuple[float, float, float, float], int, float]],
                   captions: List[str], text_padding: int = 5, font: ImageFont.ImageFont = None,
                   no_label: bool = False):
    new_img = pil_img.copy()
    draw = ImageDraw.Draw(new_img, mode='RGBA')

    _colors = list(map(str, rnd_colors(len(captions))))
    _caption_map = {i: name for i, name in enumerate(captions)}
    for (xmin, ymin, xmax, ymax), label, score in detection:
        box_color = _colors[label]
        draw.rectangle((xmin, ymin, xmax, ymax), outline=box_color, width=2)

        if not no_label:
            label_text = _caption_map.get(label, str(label))
            label_text = f'{label_text}: {score * 100:.2f}%'

            font = font or ImageFont.load_default()
            _t_x0, _t_y0, _t_x1, _t_y1 = draw.textbbox((xmin, ymin), label_text, font=font)
            _t_width, _t_height = _t_x1 - _t_x0, _t_y1 - _t_y0
            if ymin - _t_height - text_padding < 0:
                _t_text_rect = (xmin, ymin, xmin + _t_width + text_padding * 2, ymin + _t_height + text_padding * 2)
                _t_text_co = (xmin + text_padding, ymin + text_padding)
            else:
                _t_text_rect = (xmin, ymin - _t_height - text_padding * 2, xmin + _t_width + text_padding * 2, ymin)
                _t_text_co = (xmin + text_padding, ymin - _t_height - text_padding)

            draw.rectangle(_t_text_rect, fill=str(Color(box_color, alpha=0.5)))
            draw.text(_t_text_co, label_text, fill="black", font=font)

    return new_img