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

# Copyright 2008-2010 Mir Calculate Ltd. http://www.calculate-linux.org
#
#  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, sys, re
from cl_print import color_print
from cl_datavars import DataVars
from server.utils import execProg

from cl_lang import lang
lang().setLanguage(sys.modules[__name__])

from cl_abstract import abs_api

class DataVarsLdap(DataVars):
    """Хранение переменных"""
    # Имя секции в calculate2.env
    envSection = "ldap"

    def importLdap(self, **args):
        '''Импорт переменных для calculate-ldap'''
        # Импорт переменных
        self.importData(self.envSection, ('cl_vars_ldap','cl_fill_ldap'))

class shareVars:
    """share methods template vars"""
    # template variables
    clVars = False

    def createClVars(self, clVars=False):
        """Создает объект Vars"""
        if not clVars:
            clVars = DataVarsLdap()
            # Импортируем переменные
            clVars.importLdap()
            # Заменяем значения переменных переменными из env файлов
            clVars.flIniFile()
            # Устанавливаем у объекта атрибут объект переменных
            self.clVars = clVars
        return True

class serviceAPI(color_print, shareVars, abs_api):
    '''Methods ldap service'''
    prioritet = 25
    nameService = "ldap"
    nameDaemon = 'slapd'
    _templDict = {'name':nameDaemon}
    # files
    pidFile = '/var/run/openldap/%(name)s.pid' %_templDict
    # command
    cmdPath = '/etc/init.d/%(name)s' %_templDict
    _templDict.update({'cmd':cmdPath})
    cmdStart = '%(cmd)s start' %_templDict
    cmdReStart = '%(cmd)s restart' %_templDict
    cmdStop = '%(cmd)s stop' %_templDict
    cmdShowDaemons = 'rc-update show default'
    reShowDaemons = re.compile("(.+)\s+\|\s+.+")
    cmdAddRunlevel = 'rc-update add %(name)s default' %_templDict
    cmdDelRunlevel = 'rc-update del %(name)s default' %_templDict

    def getServiceName(self):
        '''Get name service'''
        return self.nameService

    def isSetup(self):
        '''Is setup service (True/False)'''
        self.createClVars(self.clVars)
        return self.clVars.Get('sr_ldap_set') == "on"

    def _getRunlevelDaemons(self):
        """Получаем всех демонов в default уровне"""
        textLines = execProg(self.cmdShowDaemons)
        if textLines is False:
            self.printERROR(_("ERROR") + ": " + self.cmdShowDaemons)
            return False
        else:
            daemons = []
            for line in textLines:
                res = self.reShowDaemons.search(line)
                if res:
                    daemon = res.groups(0)[0]
                    daemons.append(daemon)
            return daemons

    def isStart(self):
        '''Run ldap server (True/False)'''
        if os.access(self.pidFile, os.R_OK):
            pid = open(self.pidFile).read().strip()
            if pid:
                procDir = "/proc"+"/"+pid
                if os.access(procDir, os.F_OK):
                    return True
        return False

    def start(self):
        '''Запускает LDAP сервер'''
        if execProg(self.cmdStart) is False:
            self.printERROR(_("Can't execute '%s'") %self.cmdStart)
            self.printNotOK(_("Starting LDAP") + " ...")
            return False
        else:
            return True

    def restart(self):
        '''Перезапускает LDAP сервер'''
        if execProg(self.cmdReStart) is False:
            self.printERROR(_("Can't execute '%s'") %self.cmdReStart)
            self.printNotOK(_("Restarting LDAP")+ " ...")
            return False
        else:
            return True

    def stop(self):
        '''Останавливает LDAP сервер'''
        if execProg(self.cmdStop) is False:
            self.printERROR(_("Can't execute '%s'") %self.cmdStop)
            self.printNotOK(_("Stopping LDAP")+ " ...")
            return False
        else:
            return True

    def isRunlevel(self):
        '''Находится ли LDAP в автозагрузке'''
        daemons = self._getRunlevelDaemons()
        if daemons is False:
            return False
        if self.nameDaemon in daemons:
            return True
        else:
            return False

    def addRunlevel(self):
        '''Add daemon to runlevel'''
        if not self.isRunlevel():
            if execProg(self.cmdAddRunlevel) is False:
                self.printERROR(_("Can't execute '%s'") %self.cmdAddRunlevel)
                self.printNotOK(_("service %(name)s added to runlevel")\
                                %self._templDict + " ...")
                return False
        return True

    def delRunlevel(self):
        '''Delete daemon from runlevel'''
        if self.isRunlevel():
            if execProg(self.cmdDelRunlevel) is False:
                self.printERROR(_("Can't execute '%s'") %self.cmdDelRunlevel)
                self.printNotOK(_("service %(name)s removed from runlevel")\
                                %self._templDict + " ...")
                return False
        return True

    def getRunPrioritet(self):
        '''Get run daemon prioritet'''
        return self.prioritet

    def delVarsFromEnv(self):
        '''Delete template vars in env files
        '''
        self.createClVars(self.clVars)
        deleteVariables = ("sr_ldap_set",)
        locations = map(lambda x: x[0], self.clVars.Get("cl_env_data"))
        for varName in deleteVariables:
            for locate in locations:
                if not self.clVars.Delete(varName, location=locate,
                                          header=self.clVars.envSection):
                    fileName = filter(lambda x: x[0] == locate,
                                      self.clVars.Get("cl_env_data"))[0][1]
                    self.printERROR(_("Can't delete variable '%(name)s' "
                                      "in file %(file)s") %{'name':varName,
                                                'file':fileName})
                    return False
        return True