#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file 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
#
# 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.
#

"""Unit tests for videointelligenceml."""

# pytype: skip-file

from __future__ import absolute_import
from __future__ import unicode_literals

import logging
import unittest

import mock

import apache_beam as beam
from apache_beam.metrics import MetricsFilter
from apache_beam.typehints.decorators import TypeCheckError

# Protect against environments where video intelligence lib is not available.
# pylint: disable=ungrouped-imports
try:
  from google.cloud.videointelligence import VideoIntelligenceServiceClient
  from google.cloud import videointelligence
  from apache_beam.ml.gcp import videointelligenceml
except ImportError:
  VideoIntelligenceServiceClient = None


@unittest.skipIf(
    VideoIntelligenceServiceClient is None,
    'Video intelligence dependencies are not installed')
class VideoIntelligenceTest(unittest.TestCase):
  def setUp(self):
    self._mock_client = mock.Mock()
    self.m2 = mock.Mock()
    self.m2.result.return_value = None
    self._mock_client.annotate_video.return_value = self.m2
    self.features = [videointelligence.enums.Feature.LABEL_DETECTION]
    self.location_id = 'us-west1'
    config = videointelligence.types.SpeechTranscriptionConfig(
        language_code='en-US', enable_automatic_punctuation=True)
    self.video_ctx = videointelligence.types.VideoContext(
        speech_transcription_config=config)

  def test_AnnotateVideo_with_side_input_context(self):
    videos_to_annotate = [
        'gs://cloud-samples-data/video/cat.mp4',
        'gs://some-other-video/sample.mp4',
        'gs://some-other-video/sample_2.mp4'
    ]
    video_contexts = [
        ('gs://cloud-samples-data/video/cat.mp4', self.video_ctx),
        ('gs://some-other-video/sample.mp4', self.video_ctx),
    ]

    expected_counter = len(videos_to_annotate)
    with mock.patch.object(videointelligenceml,
                           'get_videointelligence_client',
                           return_value=self._mock_client):
      p = beam.Pipeline()
      context_side_input = (p | "Video contexts" >> beam.Create(video_contexts))

      _ = (
          p
          | "Create data" >> beam.Create(videos_to_annotate)
          | "Annotate video" >> videointelligenceml.AnnotateVideo(
              self.features,
              context_side_input=beam.pvalue.AsDict(context_side_input)))
      result = p.run()
      result.wait_until_finish()

      read_filter = MetricsFilter().with_name('API Calls')
      query_result = result.metrics().query(read_filter)
      if query_result['counters']:
        read_counter = query_result['counters'][0]
        self.assertTrue(read_counter.committed == expected_counter)

  def test_AnnotateVideo_URIs(self):
    videos_to_annotate = [
        'gs://cloud-samples-data/video/cat.mp4',
        'gs://cloud-samples-data/video/cat.mp4'
    ]
    expected_counter = len(videos_to_annotate)
    with mock.patch.object(videointelligenceml,
                           'get_videointelligence_client',
                           return_value=self._mock_client):
      p = beam.Pipeline()
      _ = (
          p
          | "Create data" >> beam.Create(videos_to_annotate)
          |
          "Annotate video" >> videointelligenceml.AnnotateVideo(self.features))
      result = p.run()
      result.wait_until_finish()

      read_filter = MetricsFilter().with_name('API Calls')
      query_result = result.metrics().query(read_filter)
      if query_result['counters']:
        read_counter = query_result['counters'][0]
        self.assertTrue(read_counter.committed == expected_counter)

  def test_AnnotateVideoWithContext_b64_content(self):
    base_64_encoded_video = \
      b'YmVnaW4gNjQ0IGNhdC12aWRlby5tcDRNICAgICgmOVQ+NyFNPCMwUi4uZmFrZV92aWRlb'
    videos_to_annotate = [
        (base_64_encoded_video, self.video_ctx),
        (base_64_encoded_video, None),
        (base_64_encoded_video, self.video_ctx),
    ]
    expected_counter = len(videos_to_annotate)
    with mock.patch.object(videointelligenceml,
                           'get_videointelligence_client',
                           return_value=self._mock_client):
      p = beam.Pipeline()
      _ = (
          p
          | "Create data" >> beam.Create(videos_to_annotate)
          | "Annotate video" >> videointelligenceml.AnnotateVideoWithContext(
              self.features))
      result = p.run()
      result.wait_until_finish()

    read_filter = MetricsFilter().with_name('API Calls')
    query_result = result.metrics().query(read_filter)
    if query_result['counters']:
      read_counter = query_result['counters'][0]
      self.assertTrue(read_counter.committed == expected_counter)

  def test_AnnotateVideo_b64_content(self):
    base_64_encoded_video = \
      b'YmVnaW4gNjQ0IGNhdC12aWRlby5tcDRNICAgICgmOVQ+NyFNPCMwUi4uZmFrZV92aWRlb'
    videos_to_annotate = [
        base_64_encoded_video,
        base_64_encoded_video,
        base_64_encoded_video,
    ]
    expected_counter = len(videos_to_annotate)
    with mock.patch.object(videointelligenceml,
                           'get_videointelligence_client',
                           return_value=self._mock_client):
      p = beam.Pipeline()
      _ = (
          p
          | "Create data" >> beam.Create(videos_to_annotate)
          |
          "Annotate video" >> videointelligenceml.AnnotateVideo(self.features))
      result = p.run()
      result.wait_until_finish()

      read_filter = MetricsFilter().with_name('API Calls')
      query_result = result.metrics().query(read_filter)
      if query_result['counters']:
        read_counter = query_result['counters'][0]
        self.assertTrue(read_counter.committed == expected_counter)

  def test_AnnotateVideoWithContext_bad_input(self):
    """AnnotateVideoWithContext should not accept videos without context"""
    videos_to_annotate = [
        'gs://cloud-samples-data/video/cat.mp4',
        'gs://cloud-samples-data/video/cat.mp4'
    ]
    with mock.patch.object(videointelligenceml,
                           'get_videointelligence_client',
                           return_value=self._mock_client):
      with self.assertRaises(TypeCheckError):
        p = beam.Pipeline()
        _ = (
            p
            | "Create data" >> beam.Create(videos_to_annotate)
            | "Annotate video" >> videointelligenceml.AnnotateVideoWithContext(
                self.features))
        result = p.run()
        result.wait_until_finish()

  def test_AnnotateVideo_bad_input(self):
    videos_to_annotate = [123456789, 123456789, 123456789]
    with mock.patch.object(videointelligenceml,
                           'get_videointelligence_client',
                           return_value=self._mock_client):
      with self.assertRaises(TypeCheckError):
        p = beam.Pipeline()
        _ = (
            p
            | "Create data" >> beam.Create(videos_to_annotate)
            | "Annotate video" >> videointelligenceml.AnnotateVideo(
                self.features))
        result = p.run()
        result.wait_until_finish()


if __name__ == '__main__':
  logging.getLogger().setLevel(logging.INFO)
  unittest.main()
