# -*- 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/>.
#
##############################################################################

import logging
import threading
from openerp import pooler, SUPERUSER_ID, tools

from openerp.osv import fields, osv

_logger = logging.getLogger(__name__)

class procurement_compute_all(osv.osv_memory):
    _name = 'procurement.order.compute.all'
    _description = 'Compute all schedulers'

    _columns = {
        'automatic': fields.boolean('Automatic orderpoint',help='Triggers an automatic procurement for all products that have a virtual stock under 0. You should probably not use this option, we suggest using a MTO configuration on products.'),
    }

    _defaults = {
         'automatic': lambda *a: False,
    }

    def _procure_calculation_all(self, cr, uid, ids, context=None):
        """
        @param self: The object pointer.
        @param cr: A database cursor
        @param uid: ID of the user currently logged in
        @param ids: List of IDs selected
        @param context: A standard dictionary
        """
        proc_obj = self.pool.get('procurement.order')
        #As this function is in a new thread, i need to open a new cursor, because the old one may be closed
        new_cr = pooler.get_db(cr.dbname).cursor()
        scheduler_cron_id = self.pool['ir.model.data'].get_object_reference(new_cr, SUPERUSER_ID, 'procurement', 'ir_cron_scheduler_action')[1]
        # Avoid to run the scheduler multiple times in the same time
        try:
            with tools.mute_logger('openerp.sql_db'):
                new_cr.execute("SELECT id FROM ir_cron WHERE id = %s FOR UPDATE NOWAIT", (scheduler_cron_id,))
        except Exception:
            _logger.info('Attempt to run procurement scheduler aborted, as already running')
            new_cr.rollback()
            new_cr.close()
            return {}
        for proc in self.browse(new_cr, uid, ids, context=context):
            proc_obj.run_scheduler(new_cr, uid, automatic=proc.automatic, use_new_cursor=new_cr.dbname,\
                    context=context)
        #close the new cursor
        new_cr.close()
        return {}

    def procure_calculation(self, cr, uid, ids, context=None):
        """
        @param self: The object pointer.
        @param cr: A database cursor
        @param uid: ID of the user currently logged in
        @param ids: List of IDs selected
        @param context: A standard dictionary
        """
        threaded_calculation = threading.Thread(target=self._procure_calculation_all, args=(cr, uid, ids, context))
        threaded_calculation.start()
        return {'type': 'ir.actions.act_window_close'}


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