#
#  This file is part of Documancer (http://documancer.sf.net)
#
#  Copyright (C) 2004 Vaclav Slavik
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License version 2 as
#  published by the Free Software Foundation.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#  $Id: compatibility.py,v 1.4 2005/01/30 19:46:30 vaclavslavik Exp $
#
#  Handles upgrades to newer version
#

import sys, os, os.path

import utils, book

# -------------------------------------------------------------------------
#                          0.2.3 -> 0.2.4
# -------------------------------------------------------------------------
        
def upgradeFrom023_win32_datadir():
    olddir = os.path.expanduser('~/.documancer/')
    if not os.path.isdir(olddir): return
    newdir = utils.getConfigDir()
    if os.path.isdir(newdir): return
    print 'moving %s to %s...' % (olddir, newdir)
    import shutil
    shutil.move(olddir, newdir)

def upgradeFrom023_bookfiles():
    from gettext import gettext
    from providers import providersNameToId

    cfg = utils.config()
    cfg.SetPath('/Books')
    allBooks = cfg.Read('/Books/list')
    if allBooks == '':
        return
    allBooks = allBooks.split(':')

    def loadBook(cfg):
        title = cfg.Read('title')
        provider = providersNameToId[gettext(cfg.Read('provider'))]
        attr = {}
        bookmarks = {}
        cfg.SetPath('attr')
        cont, name, index = cfg.GetFirstEntry()
        while cont:
            attr[name] = cfg.Read(name)
            cont, name, index = cfg.GetNextEntry(index)
        bk = book.Book(book.BookData(title, provider, attr))
        cfg.SetPath('../bookmarks')
        cont, name, index = cfg.GetFirstGroup()
        while cont:
            bk.bookmarks[cfg.Read('%s/title' % name)] = cfg.Read('%s/url' % name)
            cont, name, index = cfg.GetNextGroup(index)
        return bk

    print 'converting book definitions from 0.2.3 to 0.2.4 format...'
    book.books = {}
    for name in allBooks:
        if name == '': continue
        cfg.SetPath('/Books/%s' % name)
        bk = loadBook(cfg)
        book.books[bk.title] = bk
    book.saveBooks()
    cfg.SetPath('/')
    cfg.DeleteGroup('Books')


def upgradeFrom023_indexes():
    print 'deleting old cache files in 0.2.3 format...'
    cdir = utils.getConfigDir() + 'indexes/'
    if not os.path.isdir(cdir):
        return
    import shutil
    shutil.rmtree(cdir)


def upgradeFrom023():
    if sys.platform == 'win32':
        upgradeFrom023_win32_datadir()
    upgradeFrom023_bookfiles()
    upgradeFrom023_indexes()


# -------------------------------------------------------------------------
#                         Upgrades handling
# -------------------------------------------------------------------------

CURRENT_VERSION = '0.2.4'

def upgrade():
    """Upgrade as needed."""
    modified = 0
    cfg = utils.config()
    lastVersion = cfg.Read('/Backend/cfg_version', '0.2.3')
    
    if lastVersion == '0.2.3':
        upgradeFrom023()
        modified = 1

    if modified:
        cfg.Write('/Backend/cfg_version', CURRENT_VERSION)
        cfg.Flush()