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#   to you 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
#
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#   distributed under the License is distributed on an "AS IS" BASIS,
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#   See the License for the specific language governing permissions and
#   limitations under the License.

# beam-playground:
#   name: WindowingFixedTime
#   description: Task from katas to count the number of events that happened based on fixed window with 1-day duration.
#   multifile: false
#   pipeline_options:
#   categories:
#     - Windowing
#     - Combiners

from datetime import datetime
import pytz

import apache_beam as beam
from apache_beam.transforms import window

from log_elements import LogElements


with beam.Pipeline() as p:

  (p | beam.Create([
          window.TimestampedValue("event", datetime(2020, 3, 1, 0, 0, 0, 0, tzinfo=pytz.UTC).timestamp()),
          window.TimestampedValue("event", datetime(2020, 3, 1, 0, 0, 0, 0, tzinfo=pytz.UTC).timestamp()),
          window.TimestampedValue("event", datetime(2020, 3, 1, 0, 0, 0, 0, tzinfo=pytz.UTC).timestamp()),
          window.TimestampedValue("event", datetime(2020, 3, 1, 0, 0, 0, 0, tzinfo=pytz.UTC).timestamp()),
          window.TimestampedValue("event", datetime(2020, 3, 5, 0, 0, 0, 0, tzinfo=pytz.UTC).timestamp()),
          window.TimestampedValue("event", datetime(2020, 3, 5, 0, 0, 0, 0, tzinfo=pytz.UTC).timestamp()),
          window.TimestampedValue("event", datetime(2020, 3, 8, 0, 0, 0, 0, tzinfo=pytz.UTC).timestamp()),
          window.TimestampedValue("event", datetime(2020, 3, 8, 0, 0, 0, 0, tzinfo=pytz.UTC).timestamp()),
          window.TimestampedValue("event", datetime(2020, 3, 8, 0, 0, 0, 0, tzinfo=pytz.UTC).timestamp()),
          window.TimestampedValue("event", datetime(2020, 3, 10, 0, 0, 0, 0, tzinfo=pytz.UTC).timestamp()),
       ])
     | beam.WindowInto(window.FixedWindows(24*60*60))
     | beam.combiners.Count.PerElement()
     | LogElements(with_window=True))

