#!/usr/bin/env python
# coding: utf-8

# ### Execute WPS request without token

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base_url = 'http://demo-twitcher.cloud.dkrz.de/ows/proxy/emu'
url = "{}/ows/proxy/emu?service=WPS&version=1.0.0&request=Execute&identifier=hello&DataInputs=name=Stranger".format(base_url)
url


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import requests


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resp = requests.get(url)
resp.ok


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'AccessForbidden' in resp.text


# ### Execute WPS request with token

# Get a token from keycloak via phoenix client: 
# https://demo-phoenix.cloud.dkrz.de

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access_token = ''


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headers = {'Authorization': 'Bearer {}'.format(access_token)}


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resp = requests.get(url, headers=headers)
resp.ok


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'ProcessSucceeded' in resp.text


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'Hello Stranger' in resp.text


# ### Use Birdy

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from birdy import WPSClient
emu = WPSClient(url=base_url, headers=headers)


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response = emu.hello(name='Stranger')


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response.get()


# ### Keycloak client

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keycloak_url = 'https://auth-test.ceda.ac.uk'
token_endpoint = '/auth/realms/master/protocol/openid-connect/token'
client_id = 'demo-1'
# copy secret from demo-1 client
client_secret = ''


# ### Get OAuth access token from Keycloak

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token_url = "{}{}".format(keycloak_url, token_endpoint)
token_url


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from oauthlib.oauth2 import BackendApplicationClient
from requests_oauthlib import OAuth2Session

client = BackendApplicationClient(client_id=client_id)
oauth = OAuth2Session(client=client)
token = oauth.fetch_token(
    token_url,
    # scope='compute',
    client_id=client_id,
    client_secret=client_secret,
    include_client_id=True,
    verify=True)
token


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token['access_token']


# ### Run request with birdy

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from birdy import WPSClient
headers = {'Authorization': 'Bearer {}'.format(token['access_token'])}
emu = WPSClient(url=base_url, headers=headers)


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response = emu.hello(name='Stranger')


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response.get()