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

# Copyright 2008-2013 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
import sys
import re
from os import path
from calculate.lib.datavars import (Variable,VariableError,ReadonlyVariable,
    ReadonlyTableVariable,TableVariable)
from calculate.lib.utils.portage import searchProfile
from calculate.lib.utils.files import readLinesFile, readFile

from calculate.lib.cl_lang import setLocalTranslate
setLocalTranslate('cl_update3',sys.modules[__name__])

class VariableAcUpdateSync(ReadonlyVariable):
    """
    Action variable which has value "up" for package install and
    install this package
    """
    def get(self):
        action = self.Get("cl_action")
        if action in ("sync",):
            if self.Get('cl_update_world'):
                return self.Get('cl_update_world')
        return ""

class VariableClUpdateWorld(Variable):
    def get(self):
        if self.Get('cl_rebuild_world_set') == "on":
            return "rebuild"
        else:
            return ""

class VariableClRebuildWorldSet(Variable):
    """
    List of action update world, rebuild world, 
    """
    type = "bool"
    opt = ["--rebuild-world"]
    untrusted = True
    value = "off"

    def init(self):
        self.help = _("Rebuild world")
        self.label = _("Rebuild world")

class VariableClUpdateRevSet(Variable):
    """
    List of action update world, rebuild world, 
    """
    type = "bool"
    opt = ["--update-rev"]
    untrusted = True
    value = "off"
    check_after = ["cl_update_sync_rep"]

    def init(self):
        self.help = _("revision update")
        self.label = _("Revision update")

    def check(self,value):
        if ( value == "off"  and self.Get('cl_rebuild_world_set') != 'on' and 
                          not self.Get('cl_update_sync_rep')):
            raise VariableError(_("Select at least one update action"))

class VariableClUpdateRep(Variable):
    """
    Обновлять репозитории до конкретной ревизии или до последней
    """
    type = "choice"
    value = "rev"

    def choice(self):
        return ["last","rev"]

class VariableClUpdateRepData(ReadonlyTableVariable):
    """
    Информация о репозиториях
    """
    source = ['cl_update_rep_name',
              'cl_update_rep_url',
              'cl_update_rep_path',
              'cl_update_rep_rev',
              'cl_update_branch_name']

class VariableClUpdateRepName(Variable):
    """
    Список имен используемых репозиториев
    """
    type = "list"
    value = []

class VariableClUpdateRepUrl(Variable):
    """
    Список путей до репозиториев
    """
    type = "list"
    value = []

class VariableClUpdateSystemProfile(ReadonlyVariable):
    """
    Профиль системы (симлинк /etc/make.profile')
    """
    def get(self):
        try:
            return path.normpath(
                path.join('/etc',os.readlink('/etc/make.profile')))
        except:
            raise VariableError(_("Failed to determine system profile"))

class VariableClUpdateLaymanStorage(ReadonlyVariable):
    """
    Путь к репозиториям layman
    """
    def get(self):
        laymanConf = "/etc/layman/layman.cfg"
        reStorage = re.compile("^storage\s*:\s*(\S+)")
        if path.exists(laymanConf):
            for line in readLinesFile(laymanConf):
                match = reStorage.search(line)
                if match:
                    return match.group(1)
        return "/var/lib/layman"

class VariableClUpdateRepPath(ReadonlyVariable):
    """
    Пути до репозиториев
    """
    type = "list"
    mapPath = {'portage':'/usr/portage'}

    def get(self):
        repPath = self.Get('cl_update_layman_storage')
        def generatePaths(names):
            for name in names:
                if name in self.mapPath:
                    yield self.mapPath[name]
                else:
                    yield path.join(repPath,name)
        return list(generatePaths(self.Get('cl_update_rep_name')))

class VariableClUpdateRepRev(Variable):
    """
    Ревизии до которых необходимо обновить репозитории
    """
    type = "list"

    def get(self):
        if self.Get('cl_update_rep') == 'rev':
            revPaths = searchProfile(self.Get('cl_update_system_profile'),
                                     "rev")
            if revPaths:
                revPath = revPaths[-1]
                dictNamesRevs = dict(map(lambda x:x.strip().partition('=')[::2],
                                readLinesFile(revPath)))
                return map(lambda x:dictNamesRevs.get(x,"last"),
                       self.Get('cl_update_rep_name'))
        return ["last"]*len(self.Get('cl_update_rep_name'))

class VariableClUpdateBranch(TableVariable):
    """
    Выбор веток репозиториев до которых необходимо обновиться
    """
    opt = ["--branch"]
    metavalue = 'BRANCHES'
    untrusted = True
    source = ["cl_update_branch_rep",
              "cl_update_branch_name"]

    def init(self):
        self.help = _("set branches for repository (REPOSITORY:BRANCH)")
        self.label = _("Repository branch")

    def raiseReadonlyIndexError(self,fieldname="",variablename="",
                                value=""):
        """
        Неизвестный оврелей
        """
        raise VariableError(_("Repository %s not found")%value)

class VariableClUpdateBranchRep(ReadonlyVariable):
    """
    Список доступных репозиторием
    """
    type = "list"

    def init(self):
        self.label = _("Repository")

    def get(self):
        return self.Get('cl_update_rep_name')

class VariableClUpdateBranchName(Variable):
    """
    Список доступных репозиторием
    """
    type = "choiceedit-list"

    def init(self):
        self.label = _("Branch")

    def choice(self):
        return ["master","develop","update"]

    def get(self):
        def generateBranch():
            for reppath in self.Get('cl_update_rep_path'):
                headPath = path.join(reppath,".git/HEAD")
                yield readFile(headPath).rpartition('/')[2].strip() or "master"
        return list(generateBranch())

class VariableClUpdateSyncRep(Variable):
    """
    Обновляемый репозиторий
    """
    type = "choice-list"
    element = "selecttable"
    opt = ["cl_update_sync_rep"]
    metavalue = "REPOSITORIES"
    untrusted = True

    def init(self):
        self.help = _("synchronize repositories (all by default)")
        self.label = _("Synchronize repositories")
    
    def get(self):
        return self.Get('cl_update_rep_name')

    def choice(self):
        return self.Get('cl_update_rep_name')