"""Project logic."""
import logging

import const
from models import ows_project_manager
import util # noqa
from utils import document as document_utils


def prepare_doc(event):
    """Construct a Cloudsearch document for the projects corpus.

    Args:
        event (dict): event with project data from Maxwell's

    Returns:
        dict: cloudsearch document ready for upload

    """
    json_doc = {}
    doc_type = 'add'
    event_type = event.get('type')
    if not event_type or event.get('_metadata'):
        logging.warning(
            'An event with incompatible format received: %s',
            event)
        return json_doc

    if event_type == 'delete':
        doc_type = 'delete'

    if doc_type == 'add':
        json_doc = ows_project_manager.get_project_document(
            event['data']['project_id'])

    # Prevent subaccount_name from having a null value.
    if not json_doc.get('subaccount_name'):
        json_doc['subaccount_name'] = ''

    if event['data']['project_id'] in const.PROJECT_EXCLUSION_LIST:
        # Delete the cloudsearch record for exclusion list
        doc_type = 'delete'
    return document_utils.prepare_for_upload(
        util.parse_spec_file('projects'),
        {
            'type': doc_type,
            'id': 'proj{}'.format(event['data']['project_id']),
            'fields': json_doc})