from datetime import datetime, timedelta
from typing import List, Dict, Any

def filter_accounts_next_30_days(accounts: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
    """Filters accounts expiring within the next 30 days.

    Args:
        accounts: A list of account dictionaries, each with an 'expiaryDate'
            (epoch timestamp).

    Returns:
        A list of accounts expiring within the next 30 days, with added
        'expiaryDate_rendered' and 'days_to_expiry' keys.
    """
    now = datetime.now()
    thirty_days_later = now + timedelta(days=30)
    now_timestamp = int(now.timestamp())
    thirty_days_later_timestamp = int(thirty_days_later.timestamp())
    
    result = []
    today = now.date()

    for account in accounts:
        if now_timestamp <= account['expiaryDate'] < thirty_days_later_timestamp:
            expiry_date = datetime.fromtimestamp(account['expiaryDate'])
            account['expiaryDate_rendered'] = expiry_date.strftime('%d-%m-%Y')
            expiry_date_date = expiry_date.date()
            account['days_to_expiry'] = (expiry_date_date - today).days
            result.append(account)
    return result

def filter_accounts_expired(accounts: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
    """Filters accounts that have already expired.

    Args:
        accounts: A list of account dictionaries, each with an 'expiaryDate'
            (epoch timestamp).

    Returns:
        A list of expired accounts with an added 'expiaryDate_rendered' key.
    """
    current_timestamp = int(datetime.now().timestamp())

    expired_accounts = []
    for account in accounts:
        if account['expiaryDate'] < current_timestamp:
            expiry_date = datetime.fromtimestamp(account['expiaryDate'])
            account['expiaryDate_rendered'] = expiry_date.strftime('%d-%m-%Y')
            expired_accounts.append(account)

    return expired_accounts