app.py

from flask import redirect, request, Flask
from cms_bluebutton.cms_bluebutton import BlueButton


app = Flask(__name__)
bb = BlueButton()

auth_data = bb.generate_auth_data()

# AuthorizationToken holds access grant info:
# access token, expire in, expire at, token type, scope, refreh token, etc.
# it is associated with current logged in user in real app,
# check SDK python docs for more details.

auth_token = None


@app.route('/', methods=['GET'])
def get_auth_url():
    redirect_url = bb.generate_authorize_url(auth_data)
    return redirect(redirect_url, code=302)


@app.route('/api/bluebutton/callback/', methods=['GET'])
def authorization_callback():
    request_query = request.args
    code = request_query.get('code')
    state = request_query.get('state')

    auth_token = bb.get_authorization_token(auth_data, code, state)

    print("============== check auth token =================")
    print(auth_token.get_dict())

    # pre-emptively refresh token
    print("============== pre-emptively refresh auth token =================")
    auth_token = bb.refresh_auth_token(auth_token)

    print("============== check refreshed auth token =================")
    print(auth_token.get_dict())

    config = {
        "auth_token": auth_token,
        "params": {},
        "url": "to be overriden"
    }

    result = {}

    print("============== before data requests =================")
    # fetch eob, patient, coverage, profile
    try:
        eob_data = bb.get_explaination_of_benefit_data(config)
        print("============== EOB pass auth token =================")
        auth_token = eob_data['auth_token']
        print("============== after EOB request =================")
        eob_data = eob_data['response'].json()
        result['eob_data'] = eob_data
        # fhir search response could contain large number of resources,
        # by default they are chunked into pages of 10 resources each,
        # the response above might be the 1st page of EOBs, it is in the 
        # format of a FHIR bundle resource with a link section where
        # page navigation urls such as 'first', 'last', 'self', 'next', 'previous'
        # might present depending on the current page.

        # Use bb.get_pages(data, config) to get all the pages

        print("============== get pages EOB request =================")
        eob_pages = bb.get_pages(eob_data, config)
        result['eob_pages'] = eob_pages['pages']
        auth_token = eob_pages['auth_token']
        pt_data = bb.get_patient_data(config)
        print("============== Patient pass auth token =================")
        auth_token = pt_data['auth_token']
        print("============== after Patient request =================")
        result['patient_data'] = pt_data['response'].json()
        coverage_data = bb.get_coverage_data(config)
        print("============== Coverage pass auth token =================")
        auth_token = coverage_data['auth_token']
        print("============== after Coverage request =================")
        result['coverage_data'] = coverage_data['response'].json()
        profile_data = bb.get_profile_data(config)
        print("============== Profile pass auth token =================")
        auth_token = profile_data['auth_token']
        print("============== after Profile request =================")
        result['profile_data'] = profile_data['response'].json()
    except Exception as ex:
        print(ex)

    return result


if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0', port=3001)