"""
Helpers pour parser des prix avec separateurs de milliers.
"""

from __future__ import annotations

import re
from typing import Optional


def parse_price_text(text: str) -> Optional[float]:
    """
    Parse un texte de prix en float.

    Gere les separateurs espace, point, virgule et espaces insécables.
    """
    if not text:
        return None

    text = re.sub(r"(\d)\s*€\s*(\d)", r"\1,\2", text)
    cleaned = text.replace("\u00a0", " ").replace("\u202f", " ").replace("\u2009", " ")
    cleaned = "".join(ch for ch in cleaned if ch.isdigit() or ch in ".,")
    if not cleaned:
        return None

    if "," in cleaned and "." in cleaned:
        if cleaned.rfind(",") > cleaned.rfind("."):
            cleaned = cleaned.replace(".", "")
            cleaned = cleaned.replace(",", ".")
        else:
            cleaned = cleaned.replace(",", "")
    elif "," in cleaned:
        parts = cleaned.split(",")
        if len(parts) > 1:
            decimal = parts[-1]
            integer = "".join(parts[:-1])
            cleaned = f"{integer}.{decimal}" if decimal else integer
    elif "." in cleaned:
        parts = cleaned.split(".")
        if len(parts) > 1:
            decimal = parts[-1]
            integer = "".join(parts[:-1])
            cleaned = f"{integer}.{decimal}" if decimal else integer

    try:
        return float(cleaned)
    except ValueError:
        return None