""" List and manage repository vulnerabilities and other security information. """

import logging
import features

from app import secscan_api
from data import model
from endpoints.api import (require_repo_read, path_param,
                           RepositoryParamResource, resource, nickname, show_if, parse_args,
                           query_param, truthy_bool)
from endpoints.exception import NotFound, DownstreamIssue
from util.secscan.api import APIRequestFailure


logger = logging.getLogger(__name__)


class SCAN_STATUS(object):
  """ Security scan status enum """
  SCANNED = 'scanned'
  FAILED = 'failed'
  QUEUED = 'queued'


def _get_status(repo_image):
  if repo_image.security_indexed_engine is not None and repo_image.security_indexed_engine >= 0:
    return SCAN_STATUS.SCANNED if repo_image.security_indexed else SCAN_STATUS.FAILED

  return SCAN_STATUS.QUEUED


@show_if(features.SECURITY_SCANNER)
@resource('/v1/repository/<apirepopath:repository>/image/<imageid>/security')
@path_param('repository', 'The full path of the repository. e.g. namespace/name')
@path_param('imageid', 'The image ID')
class RepositoryImageSecurity(RepositoryParamResource):
  """ Operations for managing the vulnerabilities in a repository image. """

  @require_repo_read
  @nickname('getRepoImageSecurity')
  @parse_args()
  @query_param('vulnerabilities', 'Include vulnerabilities informations', type=truthy_bool,
               default=False)
  def get(self, namespace, repository, imageid, parsed_args):
    """ Fetches the features and vulnerabilities (if any) for a repository tag. """
    repo_image = model.image.get_repo_image(namespace, repository, imageid)
    if repo_image is None:
      raise NotFound()

    if not repo_image.security_indexed:
      logger.debug('Image %s under repository %s/%s not security indexed',
                   repo_image.docker_image_id, namespace, repository)
      return {
        'status': _get_status(repo_image),
      }

    try:
      if parsed_args.vulnerabilities:
        data = secscan_api.get_layer_data(repo_image, include_vulnerabilities=True)
      else:
        data = secscan_api.get_layer_data(repo_image, include_features=True)
    except APIRequestFailure as arf:
      raise DownstreamIssue({'message': arf.message})

    if data is None:
      raise NotFound()

    return {
      'status': _get_status(repo_image),
      'data': data,
    }