from flask import jsonify

from app import model_cache
from auth.registry_jwt_auth import process_registry_jwt_auth
from data.registry_model import registry_model
from endpoints.decorators import anon_protect, parse_repository_name
from endpoints.v2 import v2_bp, require_repo_read, paginate
from endpoints.v2.errors import NameUnknown


@v2_bp.route('/<repopath:repository>/tags/list', methods=['GET'])
@parse_repository_name()
@process_registry_jwt_auth(scopes=['pull'])
@require_repo_read
@anon_protect
@paginate()
def list_all_tags(namespace_name, repo_name, start_id, limit, pagination_callback):
  repository_ref = registry_model.lookup_repository(namespace_name, repo_name)
  if repository_ref is None:
    raise NameUnknown()

  # NOTE: We add 1 to the limit because that's how pagination_callback knows if there are
  # additional tags.
  tags = registry_model.lookup_cached_active_repository_tags(model_cache, repository_ref, start_id,
                                                             limit + 1)
  response = jsonify({
    'name': '{0}/{1}'.format(namespace_name, repo_name),
    'tags': [tag.name for tag in tags][0:limit],
  })

  pagination_callback(tags, response)
  return response