docs(samples): add initial sample codes

.github/CODEOWNERS

@@ -8,4 +8,4 @@
 *               @googleapis/yoshi-python
 
 # The python-samples-reviewers team is the default owner for samples changes
-/samples/  @googleapis/python-samples-owners
+/samples/  @googleapis/python-samples-owners @wuyuexin

samples/AUTHORING_GUIDE.md

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+See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/AUTHORING_GUIDE.md

samples/CONTRIBUTING.md

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+See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/CONTRIBUTING.md

samples/snippets/README.rst

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+
+.. This file is automatically generated. Do not edit this file directly.
+
+Dialogflow CX API Python Samples
+===============================================================================
+
+.. image:: https://gstatic.com/cloudssh/images/open-btn.png
+   :target: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/python-docs-samples&page=editor&open_in_editor=/README.rst
+
+
+This directory contains samples for Dialogflow CX API. The `Dialogflow CX API`_ enables you to create conversational experiences across devices and platforms.
+
+
+
+
+.. _Dialogflow CX API: https://cloud.google.com/dialogflow/cx/docs/
+
+
+Setup
+-------------------------------------------------------------------------------
+
+
+
+Authentication
+++++++++++++++
+
+This sample requires you to have authentication setup. Refer to the
+`Authentication Getting Started Guide`_ for instructions on setting up
+credentials for applications.
+
+.. _Authentication Getting Started Guide:
+    https://cloud.google.com/docs/authentication/getting-started
+
+
+
+
+Install Dependencies
+++++++++++++++++++++
+
+#. Clone python-docs-samples and change directory to the sample directory you want to use.
+
+    .. code-block:: bash
+
+        $ git clone https://github.com/GoogleCloudPlatform/python-docs-samples.git
+
+#. Install `pip`_ and `virtualenv`_ if you do not already have them. You may want to refer to the `Python Development Environment Setup Guide`_ for Google Cloud Platform for instructions.
+
+   .. _Python Development Environment Setup Guide:
+       https://cloud.google.com/python/setup
+
+#. Create a virtualenv. Samples are compatible with Python 3.6+.
+
+    .. code-block:: bash
+
+        $ virtualenv env
+        $ source env/bin/activate
+
+#. Install the dependencies needed to run the samples.
+
+    .. code-block:: bash
+
+        $ pip install -r requirements.txt
+
+.. _pip: https://pip.pypa.io/
+.. _virtualenv: https://virtualenv.pypa.io/
+
+
+
+
+
+
+Samples
+-------------------------------------------------------------------------------
+
+
+Detect Intent Text
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+.. image:: https://gstatic.com/cloudssh/images/open-btn.png
+   :target: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/python-docs-samples&page=editor&open_in_editor=/detect_intent_texts.py,/README.rst
+
+
+
+
+To run this sample:
+
+.. code-block:: bash
+
+    $ python detect_intent_texts.py
+
+
+    usage: detect_intent_texts.py [-h] --agent AGENT [--session-id SESSION_ID]
+                                  [--language-code LANGUAGE_CODE]
+                                  texts [texts ...]
+
+    DialogFlow API Detect Intent Python sample with text inputs.
+
+    Examples:
+      python detect_intent_texts.py -h
+      python detect_intent_texts.py --agent AGENT   --session-id SESSION_ID   "hello" "book a meeting room" "Mountain View"
+      python detect_intent_texts.py --agent AGENT   --session-id SESSION_ID   "tomorrow" "10 AM" "2 hours" "10 people" "A" "yes"
+
+    positional arguments:
+      texts                 Text inputs.
+
+    optional arguments:
+      -h, --help            show this help message and exit
+      --agent AGENT         Agent resource name. Required.
+      --session-id SESSION_ID
+                            Identifier of the DetectIntent session. Defaults to a
+                            random UUID.
+      --language-code LANGUAGE_CODE
+                            Language code of the query. Defaults to "en-US".
+
+
+
+
+
+Detect Intent Audio
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+.. image:: https://gstatic.com/cloudssh/images/open-btn.png
+   :target: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/python-docs-samples&page=editor&open_in_editor=/detect_intent_audio.py,/README.rst
+
+
+
+
+To run this sample:
+
+.. code-block:: bash
+
+    $ python detect_intent_audio.py
+
+
+    usage: detect_intent_audio.py [-h] --agent AGENT [--session-id SESSION_ID]
+                                  [--language-code LANGUAGE_CODE]
+                                  --audio-file-path AUDIO_FILE_PATH
+
+    DialogFlow API Detect Intent Python sample with audio file.
+
+    Examples:
+      python detect_intent_audio.py -h
+      python detect_intent_audio.py --agent AGENT   --session-id SESSION_ID --audio-file-path resources/hello.wav
+
+    optional arguments:
+      -h, --help            show this help message and exit
+      --agent AGENT         Agent resource name. Required.
+      --session-id SESSION_ID
+                            Identifier of the DetectIntent session. Defaults to a
+                            random UUID.
+      --language-code LANGUAGE_CODE
+                            Language code of the query. Defaults to "en-US".
+      --audio-file-path AUDIO_FILE_PATH
+                            Path to the audio file.
+
+
+
+
+
+Detect Intent Stream
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+.. image:: https://gstatic.com/cloudssh/images/open-btn.png
+   :target: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/python-docs-samples&page=editor&open_in_editor=/detect_intent_stream.py,/README.rst
+
+
+
+
+To run this sample:
+
+.. code-block:: bash
+
+    $ python detect_intent_stream.py
+
+
+    usage: detect_intent_stream.py [-h] --agent AGENT [--session-id SESSION_ID]
+                                   [--language-code LANGUAGE_CODE]
+                                   --audio-file-path AUDIO_FILE_PATH
+
+    DialogFlow API Detect Intent Python sample with audio files processed as an audio stream.
+
+    Examples:
+      python detect_intent_stream.py -h
+      python detect_intent_stream.py --agent AGENT   --session-id SESSION_ID --audio-file-path resources/hello.wav
+
+    optional arguments:
+      -h, --help            show this help message and exit
+      --agent AGENT         Agent resource name. Required.
+      --session-id SESSION_ID
+                            Identifier of the DetectIntent session. Defaults to a
+                            random UUID.
+      --language-code LANGUAGE_CODE
+                            Language code of the query. Defaults to "en-US".
+      --audio-file-path AUDIO_FILE_PATH
+                            Path to the audio file.
+
+
+
+
+
+
+
+
+
+The client library
+-------------------------------------------------------------------------------
+
+This sample uses the `Google Cloud Client Library for Python`_.
+You can read the documentation for more details on API usage and use GitHub
+to `browse the source`_ and  `report issues`_.
+
+.. _Google Cloud Client Library for Python:
+    https://googlecloudplatform.github.io/google-cloud-python/
+.. _browse the source:
+    https://github.com/GoogleCloudPlatform/google-cloud-python
+.. _report issues:
+    https://github.com/GoogleCloudPlatform/google-cloud-python/issues
+
+
+
+.. _Google Cloud SDK: https://cloud.google.com/sdk/

samples/snippets/README.rst.in

@@ -0,0 +1,25 @@
+# This file is used to generate README.rst
+
+product:
+  name: Dialogflow CX API
+  short_name: Dialogflow CX API
+  url: https://cloud.google.com/dialogflow/cx/docs/
+  description: >
+    The `Dialogflow CX API`_ enables you to create conversational experiences across devices and platforms.
+
+setup:
+- auth
+- install_deps
+
+samples:
+- name: Detect Intent Text
+  file: detect_intent_texts.py
+  show_help: True
+- name: Detect Intent Audio
+  file: detect_intent_audio.py
+  show_help: True
+- name: Detect Intent Stream
+  file: detect_intent_stream.py
+  show_help: True
+
+cloud_client_library: true

samples/snippets/detect_intent_audio.py

@@ -0,0 +1,107 @@
+#!/usr/bin/env python
+
+# Copyright 2020 Google LLC
+#
+# 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.
+
+"""DialogFlow API Detect Intent Python sample with audio file.
+
+Examples:
+  python detect_intent_audio.py -h
+  python detect_intent_audio.py --agent AGENT \
+  --session-id SESSION_ID --audio-file-path resources/hello.wav
+"""
+
+import argparse
+import uuid
+
+from google.cloud.dialogflowcx_v3beta1.services.sessions import SessionsClient
+from google.cloud.dialogflowcx_v3beta1.types import audio_config
+from google.cloud.dialogflowcx_v3beta1.types import session
+
+
+# [START dialogflow_detect_intent_audio]
+def run_sample():
+    # TODO(developer): Replace these values when running the function
+    project_id = "YOUR-PROJECT-ID"
+    location_id = "YOUR-LOCATION-ID"
+    # For more info on agents see https://cloud.google.com/dialogflow/cx/docs/concept/agent
+    agent_id = "YOUR-AGENT-ID"
+    agent = f"projects/{project_id}/locations/{location_id}/agents/{agent_id}"
+    # For more information on sessions see https://cloud.google.com/dialogflow/cx/docs/concept/session
+    session_id = str(uuid.uuid4())
+    audio_file_path = "YOUR-AUDIO-FILE-PATH"
+    # For more supported languages see https://cloud.google.com/dialogflow/es/docs/reference/language
+    language_code = "en-us"
+
+    detect_intent_audio(agent, session_id, audio_file_path, language_code)
+
+
+def detect_intent_audio(agent, session_id, audio_file_path, language_code):
+    """Returns the result of detect intent with an audio file as input.
+
+    Using the same `session_id` between requests allows continuation
+    of the conversation."""
+    session_client = SessionsClient()
+    session_path = f"{agent}/sessions/{session_id}"
+    print(f"Session path: {session_path}\n")
+
+    input_audio_config = audio_config.InputAudioConfig(
+        audio_encoding=audio_config.AudioEncoding.AUDIO_ENCODING_LINEAR_16,
+        sample_rate_hertz=24000,
+    )
+
+    with open(audio_file_path, "rb") as audio_file:
+        input_audio = audio_file.read()
+
+    audio_input = session.AudioInput(config=input_audio_config, audio=input_audio)
+    query_input = session.QueryInput(audio=audio_input, language_code=language_code)
+    request = session.DetectIntentRequest(session=session_path, query_input=query_input)
+    response = session_client.detect_intent(request=request)
+
+    print("=" * 20)
+    print(f"Query text: {response.query_result.transcript}")
+    response_messages = [
+        " ".join(msg.text.text) for msg in response.query_result.response_messages
+    ]
+    print(f"Response text: {' '.join(response_messages)}\n")
+
+
+# [END dialogflow_detect_intent_audio]
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter
+    )
+    parser.add_argument(
+        "--agent", help="Agent resource name.  Required.", required=True
+    )
+    parser.add_argument(
+        "--session-id",
+        help="Identifier of the DetectIntent session. " "Defaults to a random UUID.",
+        default=str(uuid.uuid4()),
+    )
+    parser.add_argument(
+        "--language-code",
+        help='Language code of the query. Defaults to "en-US".',
+        default="en-US",
+    )
+    parser.add_argument(
+        "--audio-file-path", help="Path to the audio file.", required=True
+    )
+
+    args = parser.parse_args()
+
+    detect_intent_audio(
+        args.agent, args.session_id, args.audio_file_path, args.language_code
+    )