# -*- coding: utf-8
# $Id$
#
# Copyright 2001, 2002 by IVA Team and contributors
#
# This file is part of IVA.
#
# IVA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# IVA 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 IVA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

__version__ = "$Revision$"[11:-2]

import time
import Globals, os, cPickle
from threading import Lock
l = Lock()

data_dir = os.path.join(Globals.INSTANCE_HOME,'var','iva_stat')
try:
	os.mkdir(data_dir)
except:
	pass

def load_data(path):
    #global ug_stat, uc_stat, c_stat, o_stat
    ug_stat = {} # not course spec. user stats
    uc_stat = {} # course spec. user stats
    c_stat = {} # course stats
    o_stat = {} # object views
    
    ug = os.path.join(data_dir, path+'ug_stat.dat')
    uc = os.path.join(data_dir, path+'uc_stat.dat')
    c = os.path.join(data_dir, path+'c_stat.dat')
    o = os.path.join(data_dir, path+'o_stat.dat')

    try:
        f = open(ug, "r")
        ug_stat = cPickle.load(f)
        f.close()
    except:
        pass

    try:
        f = open(uc, "r")
        uc_stat = cPickle.load(f)
        f.close()
    except:
        pass

    try:
        f = open(c, "r")
        c_stat = cPickle.load(f)
        f.close()
    except:
        pass

    try:
        f = open(o, "r")
        o_stat = cPickle.load(f)
        f.close()
    except:
        pass
    return ug_stat, uc_stat, c_stat, o_stat

def load_stats(app, iva_instances):
    """ create stats objects into temp_folder """
    from stats2_engine import load_data
    from OFS import SimpleItem
    for iva in iva_instances:
        path = '_'.join(iva.getPhysicalPath()[1:]).lower()+'_'
        print "preparing IVA@", iva, "loading files starting with", path
        tf = iva.temp_folder
        ug_stat, uc_stat, c_stat, o_stat = load_data(path)

        ug = SimpleItem.SimpleItem()
        ug.ug_stat = ug_stat

        uc = SimpleItem.SimpleItem()
        uc.uc_stat = uc_stat

        c = SimpleItem.SimpleItem()
        c.c_stat = c_stat

        o = SimpleItem.SimpleItem()
        o.o_stat = o_stat

        try:
            tf._setObject('ug_stat', ug)
        except:
            pass
        try:
            tf._setObject('uc_stat', uc)
        except:
            pass
        try:
            tf._setObject('c_stat', c)
        except:
            pass
        try:
            tf._setObject('o_stat', o)
        except:
            pass
        try:
            tf.ug_stat._p_changed = True
            tf._p_changed = True
        except:
            pass