# Copyright 2015 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Implementation of the gcloud genomics operations list command.
"""

from googlecloudsdk.api_lib.genomics import genomics_util
from googlecloudsdk.calliope import base
from googlecloudsdk.calliope import exceptions
from googlecloudsdk.third_party.apitools.base.py import exceptions as apitools_exceptions
from googlecloudsdk.third_party.apitools.base.py import list_pager


class List(base.Command):
  """List Genomics operations in a project.

  Prints a table with summary information on operations in the project.
  """

  @staticmethod
  def Args(parser):
    """Args is called by calliope to gather arguments for this command.

    Args:
      parser: An argparse parser that you can use to add arguments that go
          on the command line after this command. Positional arguments are
          allowed.
    """
    base.LIMIT_FLAG.AddToParser(parser)
    f = parser.add_argument(
        '--where',
        default='',
        type=str,
        help='A filter spec for what operations to display.')
    f.detailed_help = ("""\
        A string for filtering operations. The following filter fields are
        supported:

            createTime - The time this job was created, in seconds from the
                         epoch. Can use '>=' and/or '<=' operators.
            status     - Can be 'RUNNING', 'SUCCESS', 'FAILURE' or 'CANCELED'.
                         Only one status may be specified.

        Example:

            'createTime >= 1432140000 AND
             createTime <= 1432150000 AND status = RUNNING'

        To calculate the timestamp as seconds from the epoch, on UNIX-like
        systems (e.g.: Linux, Mac) use the 'date' command:

          $ date --date '20150701' '+%s'

          1435734000

        or with Python (e.g.: Linux, Mac, Windows):

          $ python -c 'from time import mktime, strptime; print int(mktime(strptime("01 July 2015", "%d %B %Y")))'

          1435734000
        """)

  def Run(self, args):
    """Run 'operations list'.

    Args:
      args: argparse.Namespace, The arguments that this command was invoked
          with.

    Yields:
      The list of operations for this project.

    Raises:
      HttpException: An http error response was received while executing api
          request.
    """
    apitools_client = genomics_util.GetGenomicsClient()
    genomics_messages = genomics_util.GetGenomicsMessages()

    if args.where:
      args.where += ' AND '

    args.where += 'projectId=%s' % genomics_util.GetProjectId()

    request = genomics_messages.GenomicsOperationsListRequest(
        name='operations',
        filter=args.where)

    try:
      for resource in list_pager.YieldFromList(
          apitools_client.operations, request,
          limit=args.limit,
          batch_size_attribute='pageSize',
          batch_size=args.limit,  # Use limit if any, else server default.
          field='operations'):
        yield resource
    except apitools_exceptions.HttpError as error:
      raise exceptions.HttpException(genomics_util.GetErrorMessage(error))
