"""
Validation utilities for COBY system.
"""

import re
from typing import Any


def validate_symbol(symbol: str) -> bool:
    """Validate trading symbol format"""
    if not symbol or not isinstance(symbol, str):
        return False
    
    # Basic symbol validation (letters and numbers, 3-12 chars)
    pattern = r'^[A-Z0-9]{3,12}$'
    return bool(re.match(pattern, symbol.upper()))


def validate_price(price: float) -> bool:
    """Validate price value"""
    return isinstance(price, (int, float)) and price > 0


def validate_volume(volume: float) -> bool:
    """Validate volume value"""
    return isinstance(volume, (int, float)) and volume >= 0


def validate_timestamp(timestamp: Any) -> bool:
    """Validate timestamp"""
    return timestamp is not None