#
# Copyright (c) 2022 Wind River Systems, Inc.
#
# 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.
#
import logging
from stx import utils  # pylint: disable=E0611
import subprocess

logger = logging.getLogger('STX-k8s')
utils.set_logger(logger)


class KubeHelper:
    """Common k8s commands"""

    """Constructor:
    :param config: an instance of stx.config.Config
    """
    def __init__(self, config):
        self.config = config

    def get_pods_info(self):
        '''Get all pods information of the stx building tools.'''

        cmd = self.config.kubectl() + ' get pods '
        logger.info('stx-tools pods list:')
        subprocess.check_call(cmd, shell=True)

    def get_deployment_info(self):
        '''Get all deployment information of the stx building tools.'''

        cmd = self.config.kubectl() + ' get deployment'
        logger.info('stx-tools deployments list:')
        subprocess.check_call(cmd, shell=True)

    def get_helm_info(self):
        '''Get the helm list information of the stx building tools.'''

        cmd = self.config.helm() + ' ls'
        logger.info('helm list:\n')
        subprocess.check_call(cmd, shell=True)

    def get_pod_name(self, dockername):
        '''get the detailed pod name from the four pods.'''

        cmd = self.config.kubectl() + ' get pods | grep Running | ' + \
            'grep stx-' + dockername + ' | awk \'{print $1}\' '
        output = subprocess.check_output(cmd, shell=True)
        podname = str(output.decode('utf8').strip())

        return podname

    def helm_release_exists(self, projectname):
        '''Check if the helm release exists'''

        cmd = self.config.helm() + ' ls | grep ' + projectname
        ret = subprocess.getoutput(cmd)
        if ret:
            return True
        else:
            return False

    def generatePrefixCommand(self, podname, command, enableuser):
        '''Generate the command executed in the host'''

        prefix_exec_cmd = self.config.kubectl() + ' exec -ti '
        builder_exec_cmd = prefix_exec_cmd + podname
        prefix_bash_cmd = ' -- bash -l -c '
        prefix_bash_with_user_cmd = ' -- bash -l -c \'sudo -u ${MYUNAME} bash \
    --rcfile /home/$MYUNAME/userenv -i -c '
        builder_exec_bash_cmd = builder_exec_cmd + prefix_bash_cmd
        builder_exec_bash_with_user_cmd = builder_exec_cmd + \
            prefix_bash_with_user_cmd

        if enableuser:
            cmd = builder_exec_bash_with_user_cmd + command
        else:
            cmd = builder_exec_bash_cmd + command

        return cmd