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#
# -------------------------------------------------------------------------
#   Copyright (c) 2018 Intel Corporation Intellectual Property
#   Copyright (C) 2020 Wipro Limited.
#
#   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 onapsmsclient import Client

import osdf.config.base as cfg_base
from osdf.config.base import osdf_config
import osdf.config.credentials as creds
import osdf.config.loader as config_loader
from osdf.logging.osdf_logging import debug_log
from osdf.utils import cipherUtils

config_spec = {
    "preload_secrets": "config/preload_secrets.yaml"
}


def preload_secrets():
    """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 = osdf_config.deployment
    sms_url = config["aaf_sms_url"]
    timeout = config["aaf_sms_timeout"]
    cacert = config["aaf_ca_certs"]
    if not sms_url:
        debug_log.debug("SMS Disabled")
        return
    sms_client = Client(url=sms_url, timeout=timeout, cacert=cacert)
    domain_uuid = sms_client.createDomain(domain)
    debug_log.debug(
        "Created domain {} with uuid {}".format(domain, domain_uuid))
    secrets = preload_config.get("secrets")
    for secret in secrets:
        sms_client.storeSecret(domain, secret.get('name'),
                               secret.get('values'))
    debug_log.debug("Preload secrets complete")


def retrieve_secrets():
    """Get all secrets under the domain name"""
    secret_dict = dict()
    config = osdf_config.deployment
    sms_url = config["aaf_sms_url"]
    timeout = config["aaf_sms_timeout"]
    cacert = config["aaf_ca_certs"]
    domain = config["secret_domain"]
    if sms_url:
        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
        debug_log.debug("Secret Dictionary Retrieval Success")
    else:
        debug_log.debug("SMS Disabled. Secrets not loaded")
    return secret_dict


def load_secrets():
    config = osdf_config.deployment
    secret_dict = retrieve_secrets()
    if secret_dict:
        config['soUsername'] = secret_dict['so']['UserName']
        config['soPassword'] = decrypt_pass(secret_dict['so']['Password'])
        config['conductorUsername'] = secret_dict['conductor']['UserName']
        config['conductorPassword'] = decrypt_pass(secret_dict['conductor']['Password'])
        config['policyPlatformUsername'] = secret_dict['policyPlatform']['UserName']
        config['policyPlatformPassword'] = decrypt_pass(secret_dict['policyPlatform']['Password'])
        config['policyClientUsername'] = secret_dict['policyPlatform']['UserName']
        config['policyClientPassword'] = decrypt_pass(secret_dict['policyPlatform']['Password'])
        config['messageReaderAafUserId'] = secret_dict['dmaap']['UserName']
        config['messageReaderAafPassword'] = decrypt_pass(secret_dict['dmaap']['Password'])
        config['sdcUsername'] = secret_dict['sdc']['UserName']
        config['sdcPassword'] = decrypt_pass(secret_dict['sdc']['Password'])
        config['osdfPlacementUsername'] = secret_dict['osdfPlacement']['UserName']
        config['osdfPlacementPassword'] = decrypt_pass(secret_dict['osdfPlacement']['Password'])
        config['osdfPlacementSOUsername'] = secret_dict['osdfPlacementSO']['UserName']
        config['osdfPlacementSOPassword'] = decrypt_pass(secret_dict['osdfPlacementSO']['Password'])
        config['osdfPlacementVFCUsername'] = secret_dict['osdfPlacementVFC']['UserName']
        config['osdfPlacementVFCPassword'] = decrypt_pass(secret_dict['osdfPlacementVFC']['Password'])
        config['osdfCMSchedulerUsername'] = secret_dict['osdfCMScheduler']['UserName']
        config['osdfCMSchedulerPassword'] = decrypt_pass(secret_dict['osdfCMScheduler']['Password'])
        config['configDbUserName'] = secret_dict['configDb']['UserName']
        config['configDbPassword'] = decrypt_pass(secret_dict['configDb']['Password'])
        config['pciHMSUsername'] = secret_dict['pciHMS']['UserName']
        config['pciHMSPassword'] = decrypt_pass(secret_dict['pciHMS']['Password'])
        config['osdfPCIOptUsername'] = secret_dict['osdfPCIOpt']['UserName']
        config['osdfPCIOptPassword'] = decrypt_pass(secret_dict['osdfPCIOpt']['Password'])
        config['osdfOptEngineUsername'] = secret_dict['osdfOptEngine']['UserName']
        config['osdfOptEnginePassword'] = decrypt_pass(secret_dict['osdfOptEngine']['Password'])
    cfg_base.http_basic_auth_credentials = creds.load_credentials(osdf_config)
    cfg_base.dmaap_creds = creds.dmaap_creds()


def decrypt_pass(passwd):
    config = osdf_config.deployment
    if not config.get('appkey') or passwd == '' or passwd == 'NA':
        return passwd
    else:
        return cipherUtils.AESCipher.get_instance().decrypt(passwd)


def delete_secrets():
    """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 = osdf_config.deployment
    sms_url = config["aaf_sms_url"]
    timeout = config["aaf_sms_timeout"]
    cacert = config["aaf_ca_certs"]
    domain = config["secret_domain"]
    if sms_url:
        sms_client = Client(url=sms_url, timeout=timeout, cacert=cacert)
        ret_val = sms_client.deleteDomain(domain)
        debug_log.debug("Clean up complete")
    else:
        debug_log.debug("SMS Disabled. Secrets delete skipped")
    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()