"""
Transaction Types Logic
=======================

Manages the retrieval of transaction types relevant to the account and
requested statement period.
"""

from ows_accounting.logic.samples import transaction_type_fixtures
from ows_accounting.models import transaction_types as model
from ows_accounting.presentation import transaction_types as presentation
from ows_accounting.response import Response
from ows_accounting.validation import validators


def get_transaction_types(account_id, account_type, periods):
    """Retrieve list of transaction types for account and periods.

    Args:
        account_id (int): id of account.
        account_type (string): 'vendor' or 'subaccount'.
        periods (list): a list of string period ids.

    Returns:
        Response: list of transaction types.
    """

    validation = validators.validate_account_type(account_type)

    if not validation:
        return validation

    periods = sorted(periods)
    trans_types = model.get_transaction_types_with_sales(
        account_id, account_type, periods[0], periods[-1])
    return Response(dict(items=presentation.long_and_short_names(trans_types)))


def get_sample_transaction_types():
    """Sample response until we implement actual transaction types retrieval.

    Returns:
        dict: sample response containing transaction types.
    """

    results = {
        'items': transaction_type_fixtures.transaction_types}

    return results