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#
# -------------------------------------------------------------------------
#   Copyright (c) 2018 Intel Corporation Intellectual Property
#
#   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.
#
# -------------------------------------------------------------------------
#

'''Secret Management Service Integration'''
from conductor.common import config_loader
from onapsmsclient import Client

from oslo_config import cfg
from oslo_log import log

LOG = log.getLogger(__name__)

CONF = cfg.CONF

AAF_SMS_OPTS = [
    cfg.StrOpt('aaf_sms_url',
               default='https://aaf-sms.onap:10443',
               help='Base URL for SMS, up to and not including '
                    'the version, and without a trailing slash.'),
    cfg.IntOpt('aaf_sms_timeout',
               default=30,
               help='Timeout for SMS API Call'),
    cfg.StrOpt('aaf_ca_certs',
               default='AAF_RootCA.cer',
               help='Path to the cacert that will be used to verify '
                    'If this is None, verify will be False and the server cert'
                    'is not verified by the client.'),
    cfg.StrOpt('secret_domain',
               default='has',
               help='Domain UUID - A unique UUID generated when the domain'
                    'for HAS is created by administrator during deployment')
]

CONF.register_opts(AAF_SMS_OPTS, group='aaf_sms')
config_spec = {
    "preload_secrets": "../preload_secrets.yaml"
}

secret_cache = {}


def preload_secrets():
    """ This is intended to load the secrets required for testing Application
        Actual deployment will have a preload script. Make sure the config is
        in sync"""
    preload_config = config_loader.load_config_file(
        config_spec.get("preload_secrets"))
    domain = preload_config.get("domain")
    config = CONF.aaf_sms
    sms_url = config.aaf_sms_url
    timeout = config.aaf_sms_timeout
    cacert = config.aaf_ca_certs
    sms_client = Client(url=sms_url, timeout=timeout, cacert=cacert)
    domain = sms_client.createDomain(domain)
    config.secret_domain = domain  # uuid
    secrets = preload_config.get("secrets")
    for secret in secrets:
        sms_client.storeSecret(domain, secret.get('name'),
                               secret.get('values'))
    LOG.debug("Preload secrets complete")


def retrieve_secrets():
    """Get all secrets under the domain name"""
    secret_dict = dict()
    config = CONF.aaf_sms
    sms_url = config.aaf_sms_url
    timeout = config.aaf_sms_timeout
    cacert = config.aaf_ca_certs
    domain = config.secret_domain
    sms_client = Client(url=sms_url, timeout=timeout, cacert=cacert)
    secrets = sms_client.getSecretNames(domain)
    for secret in secrets:
        values = sms_client.getSecret(domain, secret)
        secret_dict[secret] = values
    LOG.debug("Secret Dictionary Retrieval Success")
    return secret_dict


def delete_secrets():
    """ This is intended to delete the secrets for a clean initialization for
        testing Application. Actual deployment will have a preload script.
        Make sure the config is in sync"""
    config = CONF.aaf_sms
    sms_url = config.aaf_sms_url
    timeout = config.aaf_sms_timeout
    cacert = config.aaf_ca_certs
    domain = config.secret_domain
    sms_client = Client(url=sms_url, timeout=timeout, cacert=cacert)
    ret_val = sms_client.deleteDomain(domain)
    LOG.debug("Clean up complete")
    return ret_val


if __name__ == "__main__":
    # Initialize Secrets from SMS
    preload_secrets()

    # Retrieve Secrets from SMS and load to secret cache
    # Use the secret_cache instead of config files
    secret_cache = retrieve_secrets()

    # Clean up Delete secrets and domain
    delete_secrets()