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

# Copyright 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.


__version__ = "2.2.0.0"
__app__ = "calculate-lib"

import sys, os, stat, re
from cl_log import log
import cl_datavars
import cl_template
from cl_print import color_print as old_color_print
from cl_utils import runOsCommand
import cl_overriding

import cl_lang
# Перевод модуля
tr = cl_lang.lang()
tr.setLocalDomain('cl_lib')
tr.setLanguage(sys.modules[__name__])

cl_overriding.printERROR = lambda x:filter(lambda y:color_print().printERROR(y),
                                           str(x).splitlines())

packagePath = "/usr/lib/calculate-2.2"
for path in os.listdir(packagePath):
    realPath = os.path.join(packagePath,path)
    if os.path.isdir(realPath):
        pymPath = os.path.join(realPath,"pym")
        if len(filter(lambda x:x.startswith("cl_vars_") and\
            x.endswith(".py") or x.startswith("cl_fill_") and\
            x.endswith(".py"), os.listdir(pymPath)))==2:
            sys.path.insert(0, os.path.abspath(pymPath))

class writeLog:
    """Класс логгирования"""
    logger = log("apply-templates",
                 filename="/var/log/calculate/update_config.log",
                 formatter="%(asctime)s - %(levelname)s - %(message)s")


class color_print(old_color_print, writeLog):
    """Класс для переопределения печати сообщений"""
    _printObj = old_color_print()

    def printERROR(self, *arg, **argv):
        """Вывод на печать ошибки"""
        # Запись в log ошибки
        self.logger.error(arg[0])
        self._printObj.printERROR(*arg, **argv)

    def printSUCCESS(self, *arg, **argv):
        """Вывод на печать в случае успеха без  [ok] справа"""
        # Запись в log информации
        self.logger.info(arg[0])
        self._printObj.printSUCCESS(*arg, **argv)

    def printWARNING(self, *arg, **argv):
        """Вывод на печать предупреждения"""
        # Запись в log предупреждения
        self.logger.warn(arg[0])
        self._printObj.printWARNING(*arg, **argv)

    def printOK(self, *arg, **argv):
        """Вывод на печать в случае успеха с [ok] справа"""
        # Запись в log информации
        self.logger.info(arg[0])
        self._printObj.printOK(*arg, **argv)

    def printNotOK(self, *arg, **argv):
        """Вывод на печать в случае сбоя"""
        # Запись в log предупреждения
        self.logger.error(arg[0])
        self._printObj.printNotOK(*arg, **argv)

class DataVarsObject(cl_datavars.DataVars):
    """Класс переменных для десктопа"""
    def __init__(self, section):
        cl_datavars.DataVars.__init__(self)
        self.section=section

    def importDataObject(self, **args):
        '''Заполнить конфигурацию переменных, для десктопа'''
        # Имя секции в calculate.env
        #envSection = "calculate-desktop"
        # заполнить переменные окружения алгоритмом по умолнанию
        self.importData(self.section, ('cl_vars_%s' %self.section,
                                       'cl_fill_%s' %self.section))
        self.flIniFile()

class shareUpdateConfigs(color_print, writeLog):
    """Общие методы для обновления конфигурационных файлов"""
    patternBelongDir = re.compile("belong\(\)")
    patternBelongName = re.compile("belong\(([^\(\)]+)\)")
    patternSect = re.compile("^\s*\[([^\[\]]+)\]\s*")
    templatePaths = ['/usr/share/calculate/templates',
                    '/var/calculate/templates',
                    '/var/calculate/remote/templates']
    firstEnvFile = "/etc/calculate/calculate2.env"

    reCleanVer = re.compile("\d+\.?\d*\.?\d*")

    def _isApplyTemplateDir(self, scanDir, nameProgram, flagSkipDesktop=True,
                            flagDir=False):
        """Есть ли шаблоны в директории scanDir для пакета nameProgram

        выдает True, False
        """
        ret = False
        if flagDir or stat.S_ISDIR(os.stat(scanDir)[stat.ST_MODE]):
            for fileOrDir in sorted(os.listdir(scanDir)):
                absPath = os.path.join(scanDir,fileOrDir)
                statInfo = os.stat(absPath)[stat.ST_MODE]
                if stat.S_ISREG(statInfo):
                    textFile = open(absPath).read()
                    if flagSkipDesktop and\
                        "cl_pass_action==desktop" in textFile:
                        break
                    if self.patternBelongDir.search(textFile):
                        ret = os.path.basename(os.path.dirname(absPath))
                        if ret == nameProgram:
                            ret = True
                            break
                        else:
                            ret = False
                    else:
                        searchObj = self.patternBelongName.search(textFile)
                        if searchObj:
                            ret = searchObj.group(1)
                            if ret == nameProgram:
                                ret = True
                                break
                            else:
                                ret = False
                elif stat.S_ISDIR(statInfo):
                    ret = self._isApplyTemplateDir(absPath, nameProgram, True,
                                                   flagSkipDesktop)
                    if ret:
                        break
        return ret

class updateUserConfigs(shareUpdateConfigs):
    """Обновление пользовательских конфигурационных файлов"""

    def getXUsers(self):
        """Имена пользователей в X сессии"""
        xSession = 0
        foundTwoSession = False
        retCode, resWho = runOsCommand("who")
        xUsers = []
        if retCode==0:
            if resWho and type(resWho) == list:
                xUsers = map(lambda x: x[0],
                             filter(lambda x: x[1].startswith(":"),
                                    map(lambda x: filter(lambda y: y,
                                        x.split(" "))[:2] ,resWho)))
        else:
            self.printERROR(_("Can not execute 'who'"))
            return False
        return xUsers

    def _getUserTemplateDirs(self, scanDir, userTemplDirs=[], flagDir=False):
        """Находит в директории scanDir директории шаблонов для пользователя

        выдает найденные директории.
        """
        if flagDir or stat.S_ISDIR(os.stat(scanDir)[stat.ST_MODE]):
            for fileOrDir in sorted(os.listdir(scanDir)):
                absPath = os.path.join(scanDir,fileOrDir)
                statInfo = os.stat(absPath)[stat.ST_MODE]
                if stat.S_ISREG(statInfo):
                    textFile = open(absPath).read()
                    if "cl_pass_action==desktop" in textFile:
                        userTemplDirs.append(scanDir)
                        break
                elif stat.S_ISDIR(statInfo):
                    self._getUserTemplateDirs(absPath, userTemplDirs, True)
        return userTemplDirs


    def updateConfig(self, nameProgram, category, version, xUsers):
        """Обновление конфигурационных файлов у пользователей"""
        cleanVer = self.reCleanVer.search(version)
        if cleanVer:
            version = cleanVer.group()
        self.logger.info(_("Package %s") %nameProgram)
        self.logger.info(_("Update desktop configuration files"))
        if not os.path.exists(self.firstEnvFile):
            self.printWARNING(_("File '%s' does not exist")%self.firstEnvFile)
            return True
        if not os.access(self.firstEnvFile, os.R_OK):
            self.printWARNING(_("Permission denied: '%s'")%self.firstEnvFile)
            return True
        sectionsWork = []
        for line in open(self.firstEnvFile).readlines():
            sRet = self.patternSect.search(line)
            if sRet:
                sectionsWork.append(sRet.group(1))
        sectName = "desktop"
        dictPakkages = {}
        # Если установлен calculate-desktop
        if sectName in sectionsWork:
            section = ""
            for templatePath in self.templatePaths:
                fullPath = os.path.join(templatePath,sectName)
                if os.path.isdir(fullPath):
                    for foundUserPath in self._getUserTemplateDirs(fullPath):
                        if self._isApplyTemplateDir(foundUserPath, nameProgram,
                                                    flagSkipDesktop=False):
                            section = sectName
                            break
            if section:
                # Добавление условия, что программа category/nameProgram
                # установлена
                cl_template.templateFunction.installProg.update(\
                        {"%s/%s"%(category,nameProgram):[version],
                         "%s"%(nameProgram):[version]})
                for userName in xUsers:
                    clVars = DataVarsObject(section)
                    clVars.importDataObject()
                    clVars.Set("ur_login", userName, True)
                    clVars.Set("cl_pass_action", section, True)
                    clVars.Set("cl_belong_pkg", nameProgram, True)
                    clTempl = cl_template.template(clVars)
                    dirsFiles = clTempl.applyTemplates()
                    if dirsFiles is False:
                        self.printERROR(\
                            _("Error using templates for the user %s")%userName)
                        for errMess in clTempl.getError().splitlines():
                            self.printERROR(errMess)
                        return False
                    if dirsFiles and dirsFiles[1]:
                        nameAndVerPkg = clVars.Get("cl_name")+"-"+\
                                        clVars.Get("cl_ver")
                        if not nameAndVerPkg in dictPakkages:
                            dictPakkages[nameAndVerPkg] = []
                        dictPakkages[nameAndVerPkg].append((userName,
                            sorted(list(set(dirsFiles[1])))))
            if dictPakkages:
                for calcPkg in dictPakkages:
                    self.printWARNING(_("Package %s has changed files")\
                                      %calcPkg+":")
                    for userName, configFiles in dictPakkages[calcPkg]:
                        self.printWARNING(" "*2 + _("User %s")%userName + ":")
                        for nameConfigFile in configFiles:
                            self.printWARNING(" "*5 + nameConfigFile)
        if not dictPakkages:
             self.logger.warn(_("Not found templates"))
        return True


class updateSystemConfigs(shareUpdateConfigs):
    """Обновление системных конфигурационных файлов"""

    def isExistsProtectFiles(self, configPath):
        """Есть ли в защищенных директориях конфигурационные файлы"""
        if not "CONFIG_PROTECT" in os.environ:
            self.printERROR(_("Missing environment variable CONFIG_PROTECT"))
            exit(1)
        protectPaths = ["/etc"] + map(lambda x: x.strip(),
                                      os.environ["CONFIG_PROTECT"].split(" "))
        flagFoundProtect = False
        for pPath in protectPaths:
            fPath = os.path.join(configPath, pPath[1:])
            if os.path.exists(fPath) and os.listdir(fPath):
                flagFoundProtect = True
                break
        if not flagFoundProtect:
            return False
        return True

    def updateConfig(self, nameProgram, category, version, configPath):
        """Обновление системных конфигурационных файлов"""
        cleanVer = self.reCleanVer.search(version)
        if cleanVer:
            version = cleanVer.group()
        self.logger.info(_("Package %s") %nameProgram)
        self.logger.info(_("Update system cofiguration files"))
        if not os.path.exists(configPath):
            self.printERROR(_("Path '%s' does not exist")%configPath)
            return False
        if not os.path.exists(self.firstEnvFile):
            self.printWARNING(_("File '%s' does not exist")%self.firstEnvFile)
            return True
        if not os.access(self.firstEnvFile, os.R_OK):
            self.printWARNING(_("Permission denied: '%s'")%self.firstEnvFile)
            return True
        sections = []
        sectionsWork = []
        for line in open(self.firstEnvFile).readlines():
            sRet = self.patternSect.search(line)
            if sRet:
                sectionsWork.append(sRet.group(1))
        #sectionsWork = os.listdir(self.templatePaths[0])
        for sectName in sectionsWork:
            for templatePath in self.templatePaths:
                fullPath = os.path.join(templatePath,sectName)
                if not sectName in sections and os.path.isdir(fullPath):
                    if self._isApplyTemplateDir(fullPath, nameProgram):
                        sections.append(sectName)

        dictPakkages = {}
        if sections:
            # Добавление условия, что программа category/nameProgram установлена
            cl_template.templateFunction.installProg.update(\
                        {"%s/%s"%(category,nameProgram):[version],
                         "%s"%(nameProgram):[version]})
        for sectName in sections:
            clVars = DataVarsObject(sectName)
            clVars.importDataObject()
            clVars.Set("cl_root_path",configPath, True)
            clVars.Set("cl_belong_pkg",nameProgram, True)
            clTempl = cl_template.template(clVars)
            dirsFiles = clTempl.applyTemplates()
            nameAndVerPkg = clVars.Get("cl_name")+"-"+clVars.Get("cl_ver")
            if dirsFiles is False:
                self.printERROR(_("Error template in a package %s")\
                                %nameAndVerPkg)
                for errMess in clTempl.getError().splitlines():
                    self.printERROR(errMess)
                return False
            if dirsFiles and dirsFiles[1]:
                dictPakkages[nameAndVerPkg] =\
                    sorted(list(set(dirsFiles[1])))
        if dictPakkages:
            for calcPkg in dictPakkages:
                self.printWARNING(_("Package %s has changed files")%calcPkg+":")
                for nameF in dictPakkages[calcPkg]:
                    nameFile = nameF.partition(configPath)[2]
                    if nameFile[:1] != "/":
                        nameFile = "/" + nameFile
                    self.printWARNING(" "*5 + nameFile)
        else:
            self.logger.warn(_("Not found templates"))
        return True