# coding: utf-8
# OceanBase Deploy.
# Copyright (C) 2021 OceanBase
#
# This file is part of OceanBase Deploy.
#
# OceanBase Deploy is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# OceanBase Deploy is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with OceanBase Deploy.  If not, see <https://www.gnu.org/licenses/>.


from __future__ import absolute_import, division, print_function

from tool import ConfigUtil


def generate_config(plugin_context, auto_depend=False, generate_check=True, return_generate_keys=False, only_generate_password=False, *args, **kwargs):
    if return_generate_keys:
        generate_keys = ['login_password']
        return plugin_context.return_true(generate_keys=generate_keys)

    cluster_config = plugin_context.cluster_config
    generate_random_password(cluster_config)
    if only_generate_password:
        return plugin_context.return_true()

    stdio = plugin_context.stdio
    success = True
    have_depend = False
    depend = 'prometheus'
    generate_configs = {'global': {}}
    plugin_context.set_variable('generate_configs', generate_configs)
    stdio.start_loading('Generate grafana configuration')

    global_config = cluster_config.get_original_global_conf()
    login_password = global_config.get('login_password')
    if login_password:
        if generate_check:
            login_password = str(login_password)
            if len(login_password) < 5:
                stdio.error("Grafana : the length of configuration 'login_password' cannot be less than 5")
                success = False
            elif login_password == "admin":
                stdio.error("Grafana : configuration 'login_password' in configuration file should not be 'admin'")
                success = False

    if not success:
        stdio.stop_loading('fail')
        return 

    for comp in cluster_config.depends:
        if comp == depend:
            have_depend = True

    if not have_depend and auto_depend:
        cluster_config.add_depend_component(depend)

    stdio.stop_loading('succeed')
    plugin_context.return_true()


def generate_random_password(cluster_config):
    global_config = cluster_config.get_original_global_conf()
    if 'login_password' not in global_config:
        cluster_config.update_global_conf('login_password', ConfigUtil.get_random_pwd_by_total_length())