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# -*- coding: utf-8 -*-

# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2021 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT

import pwd
import logging
from dataclasses import dataclass, field
from datetime import datetime, timezone
from typing import Optional

from clcommon.clwpos_lib import is_wp_path
from clcommon.cpapi import docroot

@dataclass
class ThirdPartyAdvice:
    """
    Class for those advices which are generated not by Smart Advice,
    3rd utilities returns different values
    """
    username: str
    domain: str
    website: str
    id: int
    type: str
    status: str
    description: str
    detailed_description: str
    is_premium: str
    module_name: str
    license_status: str
    subscription_status: str
    upgrade_url: str
    total_stages: int
    completed_stages: int
    created_at: Optional[datetime] = field(default_factory=lambda: datetime.now(timezone.utc).isoformat())
    updated_at: Optional[datetime] = field(default_factory=lambda: datetime.now(timezone.utc).isoformat())

    def to_advice(self):
        return {
            'created_at': self.created_at,
            'updated_at': self.updated_at,
            'metadata': {
                'username': self.username,
                'domain': self.domain,
                'website': self.website
            },
            'advice': {
                'id': self.id,
                'type': self.type,
                'status': self.status,
                'description': self.description,
                'detailed_description': self.detailed_description,
                'is_premium': self.is_premium,
                'module_name': self.module_name,
                'license_status': self.license_status,
                'subscription': {
                    'status': self.subscription_status,
                    'upgrade_url': self.upgrade_url
                },
                'total_stages': self.total_stages,
                'completed_stages': self.completed_stages
            }
        }


def does_user_exist_on_server(username):
    try:
        pwd.getpwnam(username)
        return True
    except KeyError:
        return False

def filter_by_non_existence(advices_to_filter):
    filtered = []
    for item in advices_to_filter:
        # skip advices which appear to be linked with non-existing users
        if not does_user_exist_on_server(item['metadata']['username']):
            logging.info('User %s does not exist anymore on this server,'
                         'skipping advices for him', item['metadata']['username'])
            continue
        try:
            domain_docroot = docroot(item['metadata']['domain'])[0]
        except Exception:
            logging.info('Cannot obtain document root for domain=%s. '
                         'Most likely domain does not exist anymore or panel configs are malformed. '
                         'Skipping advice for this domain',
                         item['metadata']['domain'])
            continue
        full_website_path = domain_docroot + item['metadata']['website']
        if not is_wp_path(full_website_path):
            logging.info('Wordpress site %s does not exist anymore on this server, skipping advice for it',
                         full_website_path)
            continue
        filtered.append(item)
    return filtered