# -*- coding: utf-8 -*-
##############################################################################
#
#    OpenERP, Open Source Management Solution
#    Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version.
#
#    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 Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################

from datetime import date,timedelta
import time
from osv import fields, osv
from datetime import datetime

class project_project(osv.osv):
    _inherit = 'project.project'

    def write(self, cr, uid, ids,vals, *args, **kwargs):
        if 'date' in vals and vals['date']:
            data_project = self.browse(cr,uid,ids)
            for prj in data_project:
                c= date(*time.strptime(vals['date'],'%Y-%m-%d')[:3])
                if prj.date:
                    d= date(*time.strptime(prj.date,'%Y-%m-%d')[:3])
                    for task in prj.tasks:
                        start_dt = (datetime(*time.strptime(task.date_start,'%Y-%m-%d  %H:%M:%S')[:6])+(c-d)).strftime('%Y-%m-%d %H:%M:%S')
                        if task.date_deadline:
                            deadline_dt = (datetime(*time.strptime(task.date_deadline,'%Y-%m-%d  %H:%M:%S')[:6])+(c-d)).strftime('%Y-%m-%d %H:%M:%S')
                            self.pool.get('project.task').write(cr,uid,task.id,{'date_start':start_dt, 'date_deadline':deadline_dt})
                        else:
                            self.pool.get('project.task').write(cr,uid,task.id,{'date_start':start_dt})
        return super(project_project,self).write(cr, uid, ids, vals, *args, **kwargs)

project_project()
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