"""
Drawing separate map elements.
"""
import argparse
import logging
from pathlib import Path

import numpy as np
import svgwrite

from roentgen.icon import ShapeExtractor
from roentgen.point import Point
from roentgen.scheme import LineStyle, Scheme
from roentgen.workspace import workspace

__author__ = "Sergey Vartanov"
__email__ = "me@enzet.ru"


def draw_element(options: argparse.Namespace) -> None:
    """Draw single node, line, or area."""
    if options.node:
        target: str = "node"
        tags_description = options.node
    else:
        # Not implemented yet.
        exit(1)

    tags: dict[str, str] = dict(
        [x.split("=") for x in tags_description.split(",")]
    )
    scheme: Scheme = Scheme(workspace.DEFAULT_SCHEME_PATH)
    extractor: ShapeExtractor = ShapeExtractor(
        workspace.ICONS_PATH, workspace.ICONS_CONFIG_PATH
    )
    processed: set[str] = set()
    icon, priority = scheme.get_icon(extractor, tags, processed)
    is_for_node: bool = target == "node"
    labels = scheme.construct_text(tags, "all", processed)
    point = Point(
        icon,
        labels,
        tags,
        processed,
        np.array((32, 32)),
        None,
        is_for_node=is_for_node,
        draw_outline=is_for_node,
    )
    border: np.array = np.array((16, 16))
    size: np.array = point.get_size() + border
    point.point = np.array((size[0] / 2, 16 / 2 + border[1] / 2))

    output_file_path: Path = workspace.output_path / "element.svg"
    svg = svgwrite.Drawing(str(output_file_path), size.astype(float))
    for style in scheme.get_style(tags):
        style: LineStyle
        path = svg.path(d="M 0,0 L 64,0 L 64,64 L 0,64 L 0,0 Z")
        path.update(style.style)
        svg.add(path)
    point.draw_main_shapes(svg)
    point.draw_extra_shapes(svg)
    point.draw_texts(svg)
    with output_file_path.open("w+") as output_file:
        svg.write(output_file)
    logging.info(f"Element is written to {output_file_path}.")