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quickstart_web.py
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# -*- coding: utf-8 -*-
import os
import flask
import google.oauth2.credentials
import google_auth_oauthlib.flow
import googleapiclient.discovery
# The CLIENT_SECRETS_FILE variable specifies the name of a file that contains
# the OAuth 2.0 information for this application, including its client_id and
# client_secret.
CLIENT_SECRETS_FILE = "client_secret.json"
# This OAuth 2.0 access scope allows for full read/write access to the
# authenticated user's account and requires requests to use an SSL connection.
SCOPES = ['https://www.googleapis.com/auth/youtube.force-ssl']
API_SERVICE_NAME = 'youtube'
API_VERSION = 'v3'
app = flask.Flask(__name__)
# Note: A secret key is included in the sample so that it works, but if you
# use this code in your application please replace this with a truly secret
# key. See http://flask.pocoo.org/docs/0.12/quickstart/#sessions.
app.secret_key = 'REPLACE ME - this value is here as a placeholder.'
@app.route('/')
def index():
if 'credentials' not in flask.session:
return flask.redirect('authorize')
# Load the credentials from the session.
credentials = google.oauth2.credentials.Credentials(
**flask.session['credentials'])
client = googleapiclient.discovery.build(
API_SERVICE_NAME, API_VERSION, credentials=credentials)
return channels_list_by_username(client,
part='snippet,contentDetails,statistics',
forUsername='GoogleDevelopers')
@app.route('/authorize')
def authorize():
# Create a flow instance to manage the OAuth 2.0 Authorization Grant Flow
# steps.
flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
CLIENT_SECRETS_FILE, scopes=SCOPES)
flow.redirect_uri = flask.url_for('oauth2callback', _external=True)
authorization_url, state = flow.authorization_url(
# This parameter enables offline access which gives your application
# both an access and refresh token.
access_type='offline',
# This parameter enables incremental auth.
include_granted_scopes='true')
# Store the state in the session so that the callback can verify that
# the authorization server response.
flask.session['state'] = state
return flask.redirect(authorization_url)
@app.route('/oauth2callback')
def oauth2callback():
# Specify the state when creating the flow in the callback so that it can
# verify the authorization server response.
state = flask.session['state']
flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
CLIENT_SECRETS_FILE, scopes=SCOPES, state=state)
flow.redirect_uri = flask.url_for('oauth2callback', _external=True)
# Use the authorization server's response to fetch the OAuth 2.0 tokens.
authorization_response = flask.request.url
flow.fetch_token(authorization_response=authorization_response)
# Store the credentials in the session.
# ACTION ITEM for developers:
# Store user's access and refresh tokens in your data store if
# incorporating this code into your real app.
credentials = flow.credentials
flask.session['credentials'] = {
'token': credentials.token,
'refresh_token': credentials.refresh_token,
'token_uri': credentials.token_uri,
'client_id': credentials.client_id,
'client_secret': credentials.client_secret,
'scopes': credentials.scopes
}
return flask.redirect(flask.url_for('index'))
def channels_list_by_username(client, **kwargs):
response = client.channels().list(
**kwargs
).execute()
return flask.jsonify(**response)
if __name__ == '__main__':
# When running locally, disable OAuthlib's HTTPs verification. When
# running in production *do not* leave this option enabled.
os.environ['OAUTHLIB_INSECURE_TRANSPORT'] = '1'
app.run('localhost', 8090, debug=True)