Source code for ecstask.productavailability.utilities.overlapping_util

def get_masking_for_overlapping(masking_data):
    """
        This method is used to get updated masking if new masking overlapped with existing masking
        :param masking_data: Override Periods Details
    """
    override_periods = masking_data.get("overridePeriods")
    new_overrides = []
    from_date = ""
    to_date = ""
    override_periods = sorted(override_periods, key=lambda i: i["from"])
    if len(override_periods) > 1:
        for idx, override in enumerate(override_periods):
            is_delete = False
            override_from_date = override.get("from")
            override_to_date = override.get("to")
            is_delete, from_date, to_date = check_mask_overlapping(is_delete, idx, override, from_date, to_date)
            if not is_delete:
                if from_date < override_from_date and to_date < override_to_date:
                    new_overrides.append(override)

        new_overrides.append({
            "from": from_date,
            "to": to_date,
            "available": False
        })
        masking_data["overridePeriods"] = new_overrides
    return masking_data


def check_mask_overlapping(is_delete, idx, override, from_date, to_date):
    """ This method is used to check mask overlapping & reduce Cognitive and Cyclomatic Complexity """
    override_from_date = override.get("from")
    override_to_date = override.get("to")
    if idx == 0:
        from_date = override_from_date
        to_date = override_to_date
        is_delete = True
    else:
        if override_from_date < to_date < override_to_date:
            to_date = override_to_date
            is_delete = True

        if override_from_date < from_date:
            from_date = override_from_date
            is_delete = True

    return is_delete, from_date, to_date


def get_overlapping_dates(existing_mask_from, existing_mask_until, new_mask_from, new_mask_until):
    from_date = existing_mask_from
    to_date = existing_mask_until
    if new_mask_from <= to_date <= new_mask_until:
        to_date = new_mask_until

    if new_mask_from < from_date:
        from_date = new_mask_from

    return {"from": from_date,
            "to": to_date}