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import os
from typing import Tuple, List, Optional, Any, Dict  # NOQA

from vendors_api import CONFIG_PATH
from vendors_api.exceptions import NotFound, NotImplementedByVendor

from clcommon.cpapi.GeneralPanel import GeneralPanelPluginV1, PHPDescription
from clcommon.cpapi.cpapiexceptions import NoDBAccessData, NotSupported, NoDomain
from vendors_api.parser import PublicApi

from clcommon.features import ALL_CL_FEATURES, Feature


class PanelPlugin(GeneralPanelPluginV1):
    def __init__(self):
        super().__init__()
        self._api = PublicApi()

    def getCPName(self):
        if not os.path.exists(CONFIG_PATH):
            return None

        return self._api.panel_info().name

    def get_cp_description(self):
        if not os.path.exists(CONFIG_PATH):
            return None

        info = self._api.panel_info()
        return {'name': info.name, 'version': info.version, 'additional_info': None}

    def admin_packages(self, raise_exc=False):
        main_admin = self._api.admins(is_main=True)[0]
        return [pack.name for pack in self._api.packages(owner=main_admin.name)]

    def resellers_packages(self, raise_exc=False):
        result = {}
        main_admin = self._api.admins(is_main=True)[0]
        for pack in self._api.packages():
            if pack.owner == main_admin.name:
                continue

            if pack.owner not in result:
                result[pack.owner] = []
            result[pack.owner].append(pack.name)
        return result

    def get_uids_list_by_package(self, package_name, reseller_name=None):
        main_admin = self._api.admins(is_main=True)[0]
        try:
            users = self._api.users(
                package_name=package_name,
                package_owner=reseller_name or main_admin.name,
                fields=['id']
            )
        except NotFound:
            return []
        return [str(u.id) for u in users]

    def admins(self):
        admins = self._api.admins()
        return [admin.unix_user for admin in admins if admin.unix_user]

    def resellers(self):
        resellers = self._api.resellers()
        return tuple(r.name for r in resellers)

    def is_reseller(self, username):
        return username in self.resellers()

    def db_access(self):
        try:
            db = self._api.db_info().mysql
        except NotImplementedByVendor as e:
            raise NoDBAccessData(f'db_info is not implemented by vendor: `{e}`') from e

        if db is None:
            raise NoDBAccessData('db_access is not supported by this control panel')

        access = {}
        access['login'] = db.access.login
        access['pass'] = db.access.password
        access['host'] = db.access.host
        access['port'] = db.access.port
        return access

    def dblogin_cplogin_pairs(self, cplogin_lst=None, with_system_users=False):
        try:
            db = self._api.db_info().mysql
        except NotImplementedByVendor as e:
            raise NotSupported(f'db_info is not implemented by vendor: `{e}`') from e

        if db is None:
            raise NotSupported('dblogin_cplogin_pairs is not supported by this control panel')

        result = []
        for sys_user, db_users in db.mapping.items():
            if cplogin_lst and sys_user not in cplogin_lst:
                continue

            for db_user in db_users:
                result.append([db_user, sys_user])
        return tuple(result)

    def _convert_by_mapping(self, objects, mapping, keyls):
        def _get_key_nested(token, obj):
            keys = token.split('.')
            for key in keys:
                obj = getattr(obj, key, None)
            return obj

        result = []
        for user in objects:
            as_array = []
            for key in keyls:
                if key not in mapping:
                    value = None
                else:
                    value = _get_key_nested(mapping[key], user)
                as_array.append(value)
            result.append(as_array)

        return result

    def _sys_users_info(self, sys_login, keyls):
        # type: (Optional[str], Tuple[str]) -> List[Tuple]
        mapping = {
            'cplogin': 'username',
            'mail': 'email',
            'reseller': 'owner',
            'dns': 'domain',
            'locale': 'locale_code',
            'package': 'package.name'
        }

        try:
            users = self._api.users(filter_names=sys_login)
        except NotFound:
            return []

        return self._convert_by_mapping(users, mapping, keyls)

    def _resellers_info(self, sys_login, keyls):
        # type: (Optional[str], Tuple[str]) -> List[Tuple]
        mapping = {
            'cplogin': 'name',
            'mail': 'email',
            'locale': 'locale_code',
        }

        try:
            resellers = self._api.resellers(filter_names=sys_login)
        except NotFound:
            resellers = []

        try:
            admins = self._api.admins(filter_names=sys_login)
        except NotFound:
            admins = []

        return self._convert_by_mapping(resellers + admins, mapping, keyls)

    def cpinfo(self, cpuser=None, keyls=('cplogin', 'package', 'mail', 'reseller', 'dns'),
               search_sys_users=True):
        if search_sys_users:
            return self._sys_users_info(cpuser, keyls)
        else:
            return self._resellers_info(cpuser, keyls)

    def list_users(self, raise_exc=False):
        users = self._api.users(fields=['id', 'package', 'owner'])
        result = {}
        for user in users:
            result[user.id] = {
                'package': getattr(user.package, 'name', None),
                'reseller': user.owner
            }
        return result

    def get_reseller_users(self, reseller):
        try:
            users = self._api.users(owner=reseller, fields=['id', 'package', 'owner'])
        except NotFound:
            return {}
        return {
            user.id: {'package': getattr(user.package, 'name', None), 'reseller': user.owner}
            for user in users
        }

    def list_all(self, raise_exc=False):
        users = self._api.users(fields=['id', 'package'])
        return {
            user.id: getattr(user.package, 'name', None)
            for user in users
        }

    def reseller_package_by_uid(self, user_id):
        try:
            user = self._api.users(unix_id=user_id, fields=['owner', 'package'])[0]
        except (NotFound, IndexError):
            return '', ''
        return user.owner, getattr(user.package, 'name', None)

    def get_admin_emails_list(self):
        # see get_admin_email in __init__
        # we do not care how much admins exist
        # in control panel now
        # so just return one
        main_admin = self._api.admins(is_main=True)[0]
        return [main_admin.email]

    def docroot(self, domain):
        try:
            domain = self._api.domains(name=domain)[domain]
        except (NotFound, KeyError) as e:
            raise NoDomain(f"Can't obtain document root for domain '{domain}'") from e
        return domain.document_root, domain.owner

    @staticmethod
    def useraliases(cpuser, domain):
        """
        Return aliases from user domain
        :param str|unicode cpuser: user login
        :param str|unicode domain:
        :return list of aliases
        """
        return []

    def userdomains(self, cpuser):
        try:
            domains = self._api.domains(owner=cpuser)
        except NotFound:
            return []

        result = []
        # main domain must be first
        sorted_domains = sorted(list(domains.items()), key=lambda __d: not __d[1].is_main)
        for domain, info in sorted_domains:
            result.append((domain, info.document_root))
        return result

    def reseller_users(self, resellername=None):
        try:
            return [
                user.username for user in self._api.users(
                    owner=resellername, fields=['username'])
            ]
        except NotFound:
            return []

    def reseller_domains(self, resellername=None):
        try:
            users = self.reseller_users(resellername)
            return dict(self.cpinfo(users, keyls=('cplogin', 'dns')))
        except NotFound:
            return {}

    def get_user_login_url(self, domain):
        url_template = self._api.panel_info().user_login_url
        if url_template is None:
            return url_template
        return url_template.format(domain=domain)

    def get_reseller_id_pairs(self):
        return {r.name: r.id for r in self._api.resellers()}

    def get_admin_locale(self):
        main_admin = self._api.admins(is_main=True)[0]
        return main_admin.locale_code

    def get_unsupported_cl_features(self) -> tuple[Feature, ...]:
        feature_is_enabled_map = self._api.panel_info().supported_cl_features
        # when hoster does not define list of supported features
        # we assume that all of them are supported
        if feature_is_enabled_map is None:
            if self.is_feature_lve_supported():
                return tuple()
            return (Feature.LVE, )

        disabled_features = set(
            feature for feature in ALL_CL_FEATURES
            # we should show only feature that explicitly enabled by hoster
            # that is why we use default False value here
            if not feature_is_enabled_map.get(feature, False)
        )

        # LVE is critical for many other modules, so there is live-check
        if self.is_feature_lve_supported():
            if Feature.LVE in disabled_features:
                disabled_features.remove(Feature.LVE)
        else:
            disabled_features.add(Feature.LVE)

        # to not make all vendors edit theis custom scripts with new parameter
        if Feature.AUTOTRACING in disabled_features and Feature.XRAY not in disabled_features:
            disabled_features.remove(Feature.AUTOTRACING)

        return tuple(disabled_features)

    def is_feature_lve_supported(self):
        from clcommon.lib.cledition import is_container  # pylint: disable=import-outside-toplevel
        from clcommon.lib.cledition import is_cl_solo_edition  # pylint: disable=import-outside-toplevel

        is_binary_exists = os.path.exists('/usr/sbin/lvectl')
        return all([
            is_binary_exists,
            not is_container(),
            not is_cl_solo_edition(skip_jwt_check=True),
        ])

    def get_domains_php_info(self):
        domains = self._api.domains(with_php=True)

        domains_php_info = {}
        for domain, domain_info in domains.items():

            handler_type = 'fpm' if domain_info.php.fpm \
                else 'cgi'

            if domain_info.php.handler:
                handler_type = domain_info.php.handler

            php_version_full = domain_info.php.php_version_id
            if not php_version_full:
                continue

            domains_php_info[domain] = {
                'username': domain_info.owner,
                'php_version_id': php_version_full,
                'handler_type': handler_type,
                'display_version': php_version_full
            }

        return domains_php_info

    def get_installed_php_versions(self):
        phps = self._api.php()

        php_description = []
        for php in phps:
            php_description.append(PHPDescription(
                identifier=php.identifier,
                version=f'{php.identifier[-2]}.{php.identifier[-1]}',
                dir=php.dir,
                modules_dir=php.modules_dir,
                bin=php.bin,
                ini=php.ini,
            ))

        return php_description