"""Format data."""

from datetime import datetime
import re


def flatten_input_data(data):
    """Flatten input data to a single-level dict."""
    for key, value in data.copy().items():
        if type(value) is dict:
            del data[key]
            data.update(value)
            data.update(flatten_input_data(value))

    return data


def get_now_timestamp() -> int:
    """Get current timestamp."""
    dt = datetime.now()
    return int(datetime.timestamp(dt))


def snake_case(value):
    """Convert camel case string to snake case."""
    first_underscore = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', value)
    return re.sub('([a-z0-9])([A-Z])', r'\1_\2', first_underscore).lower()


def keys_to_snake_case(content):
    """Convert all keys for given dict to snake case."""
    return {snake_case(key): value for key, value in content.items()}