# All Rights Reserved.
#
#    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 os
import re
import configparser

# Can be overriden by defining environment variables with same name
DEFAULTS = {
    'ES_URL': 'http://logstash.openstack.org:80/elasticsearch',
    'LS_URL': 'http://logstash.openstack.org',
    'DB_URI': 'mysql+pymysql://query:query@logstash.openstack.org/subunit2sql',
    'server_password': '',
    'CI_USERNAME': 'jenkins',
    'JOBS_RE': 'dsvm',
    'PID_FN': '/var/run/elastic-recheck/elastic-recheck.pid',
    'INDEX_FORMAT': r'logstash-%Y.%m.%d',
    'GERRIT_QUERY_FILE': 'queries',
    'GERRIT_HOST': 'review.opendev.org',
    'IRC_LOG_CONFIG': None
}

# Not all teams actively used elastic recheck for categorizing their
# work, so to keep the uncategorized page more meaningful, we exclude
# jobs from teams that don't use this toolchain.
EXCLUDED_JOBS = (
    # Docs team
    "api-site",
    "operations-guide",
    "openstack-manuals",
    # Ansible
    "ansible",
    # Puppet
    "puppet",
)

EXCLUDED_JOBS_REGEX = re.compile('(' + '|'.join(EXCLUDED_JOBS) + ')')

INCLUDED_PROJECTS_REGEX = "(^openstack/|devstack|grenade)"

# TODO(dmsimard): Revisit this query once Zuul v2 is no longer supported
# Let's value legibility over pep8 line width here...
ALL_FAILS_QUERY = (
    '('
    '(filename:"job-output.txt" AND message:"POST-RUN END" AND message:"playbooks/base/post.yaml")'  # noqa E501
    ' OR '
    '(filename:"console.html" AND (message:"[Zuul] Job complete" OR message:"[SCP] Copying console log" OR message:"Grabbing consoleLog"))'  # noqa E501
    ')'
    ' AND build_status:"FAILURE"'
    ' AND build_queue:"gate"'
    ' AND voting:"1"'
)

UNCAT_MAX_SEARCH_SIZE = 30000


class Config(object):

    def __init__(self,
                 config_file=None,
                 config_obj=None,
                 es_url=None,
                 ls_url=None,
                 db_uri=None,
                 jobs_re=None,
                 ci_username=None,
                 pid_fn=None,
                 es_index_format=None,
                 all_fails_query=None,
                 excluded_jobs_regex=None,
                 included_projects_regex=None,
                 uncat_search_size=None,
                 gerrit_query_file=None):

        # override defaults with environment variables
        for key, val in os.environ.items():
            if key in DEFAULTS:
                DEFAULTS[key] = val

        self.es_url = es_url or DEFAULTS['ES_URL']
        self.ls_url = ls_url or DEFAULTS['LS_URL']
        self.db_uri = db_uri or DEFAULTS['DB_URI']
        self.jobs_re = jobs_re or DEFAULTS['JOBS_RE']
        self.ci_username = ci_username or DEFAULTS['CI_USERNAME']
        self.es_index_format = es_index_format or DEFAULTS['INDEX_FORMAT']
        self.pid_fn = pid_fn or DEFAULTS['PID_FN']
        self.ircbot_channel_config = None
        self.irc_log_config = DEFAULTS['IRC_LOG_CONFIG']
        self.all_fails_query = all_fails_query or ALL_FAILS_QUERY
        self.excluded_jobs_regex = excluded_jobs_regex or EXCLUDED_JOBS_REGEX
        self.included_projects_regex = \
            included_projects_regex or INCLUDED_PROJECTS_REGEX
        self.uncat_search_size = uncat_search_size or UNCAT_MAX_SEARCH_SIZE
        self.gerrit_query_file = (gerrit_query_file or
                                  DEFAULTS['GERRIT_QUERY_FILE'])
        self.gerrit_user = None
        self.gerrit_host = None
        self.gerrit_host_key = None

        if config_file or config_obj:
            if config_obj:
                config = config_obj
            else:
                config = configparser.ConfigParser()
                config.read(config_file)
            cfg_map = {
                'db_uri': ('data_source', 'db_uri'),
                'es_url': ('data_source', 'es_url'),
                'gerrit_host': ('gerrit', 'host'),
                'gerrit_host_key': ('gerrit', 'key'),
                'gerrit_query_file': ('gerrit', 'query_file'),
                'gerrit_user': ('gerrit', 'user'),
                'index_format': ('data_source', 'index_format'),
                'irc_log_config': ('ircbot', 'log_config'),
                'ircbot_channel_config': ('ircbot', 'channel_config'),
                'ircbot_server': ('ircbot', 'server_password'),
                'ircbot_sever_password': ('ircbot', 'port'),
                'jobs_re': ('recheckwatch', 'jobs_re'),
                'ls_url': ('data_source', 'ls_url'),
                'nick': ('ircbot', 'nick'),
                'pass': ('ircbot', 'pass'),
                'pid_fn': ('ircbot', 'pidfile'),
                'recheckwatch': ('recheckwatch', 'ci_username'),
            }
            for k, v in cfg_map.items():
                try:
                    if hasattr(self, k) and getattr(self, k) is None:
                        setattr(self, k, config.get(v[0], v[1]))
                except (
                        configparser.NoOptionError,
                        configparser.NoSectionError):
                    pass