#!/usr/bin/python3
import re
import typing as T
from dataclasses import dataclass
from pathlib import Path

GRID_MAX_SQUARES = 50
GRID_SQUARE_SIZE = 12
GRID_SQUARE_MARGIN = 2
LEGEND_SQUARE_SIZE = 12
LEGEND_SQUARE_MARGIN = 2
LEGEND_ROW_PADDING = 3
LEGEND_MARGIN = 15
TEXT_SIZE = 15
TEXT_MARGIN = 5
DOCS_DIR = Path(__file__).parent
PROGRESS_TXT_FILE = DOCS_DIR / "progress.txt"
PROGRESS_SVG_FILE = DOCS_DIR / "progress.svg"

COLOR_DECOMPILED = "green"
COLOR_TODO = "lightpink"


@dataclass
class Function:
    name: str
    offset: int
    size: int
    flags: str

    @property
    def is_decompiled(self):
        return "+" in self.flags


def collect_functions() -> T.Iterable[Function]:
    for line in PROGRESS_TXT_FILE.open():
        if line.startswith("#"):
            continue
        func_name, offset, size, flags = re.split(r"\s+", line.strip())
        yield Function(
            name=func_name,
            offset=int(offset, 16),
            size=int(size, 16),
            flags=flags,
        )


@dataclass
class BoundingBox:
    x1: int
    y1: int
    x2: int
    y2: int


class Shape:
    @property
    def bounds(self) -> BoundingBox:
        raise NotImplementedError("not implemented")

    def render(self) -> str:
        raise NotImplementedError("not implemented")


def get_common_bbox(shapes: T.List[Shape]) -> BoundingBox:
    return BoundingBox(
        x1=min(shape.bounds.x1 for shape in shapes),
        y1=min(shape.bounds.y1 for shape in shapes),
        x2=max(shape.bounds.x2 for shape in shapes),
        y2=max(shape.bounds.y2 for shape in shapes),
    )


@dataclass
class Square(Shape):
    x: int
    y: int
    color: str
    size: int = GRID_SQUARE_SIZE

    @property
    def bounds(self) -> BoundingBox:
        return BoundingBox(
            x1=self.x, y1=self.y, x2=self.x + self.size, y2=self.y + self.size
        )

    def render(self) -> str:
        return (
            f"<rect "
            f'width="{self.size}" '
            f'height="{self.size}" '
            f'x="{self.x}" '
            f'y="{self.y}" '
            f'fill="{self.color}"/>'
        )


@dataclass
class Text(Shape):
    x: int
    y: int
    text: str

    @property
    def bounds(self) -> BoundingBox:
        return BoundingBox(
            x1=self.x, y1=self.y, x2=self.x, y2=self.y + TEXT_SIZE
        )

    def render(self) -> str:
        return (
            f'<text alignment-baseline="central" '
            f'x="{self.x}" y="{self.y + TEXT_SIZE/2}" '
            f'style="font-family: sans-serif; font-size: {TEXT_SIZE}px">'
            f"{self.text}"
            f"</text>"
        )


@dataclass
class LegendText(Shape):
    x: int
    y: int
    color: str
    text: str

    @property
    def _square(self) -> Square:
        return Square(
            x=self.x,
            y=self.y + (TEXT_SIZE - LEGEND_SQUARE_SIZE) / 2,
            color=self.color,
            size=LEGEND_SQUARE_SIZE,
        )

    @property
    def _text(self) -> Text:
        return Text(
            x=LEGEND_SQUARE_SIZE + TEXT_MARGIN,
            y=self.y,
            text=self.text,
        )

    @property
    def bounds(self) -> BoundingBox:
        return get_common_bbox([self._square, self._text])

    def render(self) -> str:
        return self._square.render() + self._text.render()


def render_svg(functions: T.List[Function]) -> T.Iterable[Shape]:
    for i, function in enumerate(functions):
        x = (i % GRID_MAX_SQUARES) * (GRID_SQUARE_SIZE + GRID_SQUARE_MARGIN)
        y = (i // GRID_MAX_SQUARES) * (GRID_SQUARE_SIZE + GRID_SQUARE_MARGIN)
        if function.is_decompiled:
            color = COLOR_DECOMPILED
        else:
            color = COLOR_TODO
        yield Square(x=x, y=y, color=color)

    y += GRID_SQUARE_SIZE + LEGEND_MARGIN

    ready_functions = sum(function.is_decompiled for function in functions)
    total_functions = len(functions)
    ready_size = sum(
        function.size for function in functions if function.is_decompiled
    )
    total_size = sum(function.size for function in functions)

    for (color, text) in [
        (
            COLOR_DECOMPILED,
            (
                f"Functions decompiled (count): "
                f"{ready_functions/total_functions:.02%}"
            ),
        ),
        (
            COLOR_DECOMPILED,
            f"Functions decompiled (bytesize): {ready_size/total_size:.02%}",
        ),
        (
            COLOR_TODO,
            (
                f"Functions remaining (count): "
                f"{(total_functions-ready_functions)/total_functions:.02%}"
            ),
        ),
        (
            COLOR_TODO,
            (
                f"Functions remaining (bytesize): "
                f"{(total_size-ready_size)/total_size:.02%}"
            ),
        ),
    ]:
        yield LegendText(
            x=0,
            y=y,
            color=color,
            text=text,
        )
        y += TEXT_SIZE + LEGEND_ROW_PADDING


def main() -> None:
    functions = list(collect_functions())
    with PROGRESS_SVG_FILE.open("w") as handle:
        shapes = list(render_svg(functions))
        bbox = get_common_bbox(shapes)

        print(
            f'<svg version="1.1" '
            f'width="{bbox.x2}" '
            f'height="{bbox.y2}" '
            f'xmlns="http://www.w3.org/2000/svg">',
            file=handle,
        )

        for shape in shapes:
            print(shape.render(), file=handle)

        print("</svg>", file=handle)


if __name__ == "__main__":
    main()