import re

INDIAN_MOBILE_RE = re.compile(r"^[6-9]\d{9}$")


def normalize_phone_number(value: str) -> str:
    cleaned = re.sub(r"\D", "", value.strip())
    if cleaned.startswith("91") and len(cleaned) == 12:
        cleaned = cleaned[2:]
    if cleaned.startswith("0") and len(cleaned) == 11:
        cleaned = cleaned[1:]
    if not INDIAN_MOBILE_RE.fullmatch(cleaned):
        raise ValueError("Enter a 10-digit mobile number without +91, e.g. 9876543210")
    return cleaned


def validate_price(value: float, label: str) -> float:
    if value < 0:
        raise ValueError(f"{label} must be zero or greater")
    if value > 999999:
        raise ValueError(f"{label} is too large")
    return round(float(value), 2)


def validate_per_min_price(value: float, label: str) -> float:
    if value < 0:
        raise ValueError(f"{label} must be zero or greater")
    if value > 9999:
        raise ValueError(f"{label} is too large")
    return round(float(value), 4)