import re


__all__ = ("colorize",)

BOLD_PAT = re.compile(r"\*\*(.+?)\*\*", re.MULTILINE)
ITALIC_PAT = re.compile(r"//(.+?)//", re.MULTILINE)
INTEREST_PAT = re.compile(r"\(\((.+?)\)\)", re.MULTILINE)
SHADOW_PAT = re.compile(r"\{\{(.+?)\}\}", re.MULTILINE)

BOLD_COL = "\u001b[1m"
ITALIC_COL = "\u001b[3m"
INTEREST_COL = "\u001b[34;1m"
SHADOW_COL = "\u001b[30;1m"
RESET_COL = "\u001b[0m"


def colorize(text: str) -> str:
    """
    Colorizes text for output on an ANSI terminal.

    This will use escape codes to replace things.

    Style guide:
        ((This)) is "interest" styling. This will make the text blue.
        {{This}} is "shadow" styling. This will make the text a dark grey (or at
                 least, more subtle.)
    """
    replacements = [
        (INTEREST_PAT, INTEREST_COL),
        (SHADOW_PAT, SHADOW_COL),
        (BOLD_PAT, BOLD_COL),
        (ITALIC_PAT, ITALIC_COL),
    ]

    for (pat, col) in replacements:
        text = pat.sub(col + r"\1" + RESET_COL, text)

    return text