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+# -*- coding: utf-8 -*-
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+#################################################################################
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+#
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+# OpenERP, Open Source Management Solution
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+# Copyright (C) 2013 Julius Network Solutions SARL <contact@julius.fr>
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+#
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+# This program is free software: you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation, either version 3 of the License, or
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+# (at your option) any later version.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+#
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+# You should have received a copy of the GNU General Public License
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+# along with this program. If not, see <http://www.gnu.org/licenses/>.
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+#
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+#################################################################################
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+
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+from openerp.osv import fields, orm
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+from openerp.tools.translate import _
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+
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+
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+def isodd(x):
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+ return bool(x % 2)
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+
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+# class product_template(orm.Model):
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+# _inherit = 'product.template'
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+#
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+# _columns = {
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+# 'variants': fields.one2many('product.product', 'product_tmpl_id', 'Variants'),
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+# }
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+#
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+# def generate_ean13(self, cr, uid, ids, context=None):
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+# if context is None: context = {}
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+# product_obj = self.pool.get('product.product')
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+# templates = self.browse(cr, uid, ids, context=context)
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+# for template in templates:
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+# variant_ids = [x.id for x in template.variant_ids]
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+# product_obj.generate_ean13(cr, uid, variant_ids, context=context)
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+# return True
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+
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+
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+class product_category(orm.Model):
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+ _inherit = 'product.category'
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+
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+ _columns = {
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+ 'ean_sequence_id': fields.many2one('ir.sequence', 'Ean Sequence'),
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+ }
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+
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+
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+class product_product(orm.Model):
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+ _inherit = 'product.product'
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+
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+ _columns = {
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+ 'ean_sequence_id': fields.many2one('ir.sequence', 'Ean Sequence'),
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+ }
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+
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+ def _get_ean_next_code(self, cr, uid, product, context=None):
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+ if context is None:
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+ context = {}
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+ sequence_obj = self.pool.get('ir.sequence')
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+ ean = ''
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+ if product.ean_sequence_id:
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+ ean = sequence_obj.next_by_id(cr, uid, product.ean_sequence_id.id, context=context)
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+ elif product.categ_id.ean_sequence_id:
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+ ean = sequence_obj.next_by_id(cr, uid, product.categ_id.ean_sequence_id.id, context=context)
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+ elif product.company_id and product.company_id.ean_sequence_id:
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+ ean = sequence_obj.next_by_id(cr, uid, product.company_id.ean_sequence_id.id, context=context)
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+ elif context.get('sequence_id'):
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+ ean = sequence_obj.next_by_id(cr, uid, context.get('sequence_id'), context=context)
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+ else:
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+ return None
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+ if len(ean) > 12:
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+ raise orm.except_orm(_("Configuration Error!"),
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+ _("There next sequence is upper than 12 characters. This can't work."
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+ "You will have to redefine the sequence or create a new one"))
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+ else:
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+ ean = (len(ean[0:6]) == 6 and ean[0:6] or ean[0:6].ljust(6, '0')) + ean[6:].rjust(6, '0')
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+ return ean
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+
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+ def _get_ean_key(self, code):
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+ sum = 0
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+ for i in range(12):
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+ if isodd(i):
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+ sum += 3 * int(code[i])
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+ else:
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+ sum += int(code[i])
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+ key = (10 - sum % 10) % 10
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+ return str(key)
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+
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+ def _generate_ean13_value(self, cr, uid, product, context=None):
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+ ean13 = False
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+ if context is None:
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+ context = {}
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+ ean = self._get_ean_next_code(cr, uid, product, context=context)
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+ if not ean:
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+ return None
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+ key = self._get_ean_key(ean)
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+ ean13 = ean + key
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+ return ean13
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+
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+ def generate_ean13(self, cr, uid, ids, context=None):
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+ if context is None:
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+ context = {}
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+ product_ids = self.browse(cr, uid, ids, context=context)
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+ for product in product_ids:
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+ if product.ean13:
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+ continue
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+ ean13 = self._generate_ean13_value(cr, uid, product, context=context)
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+ if not ean13:
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+ continue
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+ self.write(cr, uid, [product.id], {
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+ 'ean13': ean13
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+ }, context=context)
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+ return True
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+
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+ def copy(self, cr, uid, id, default=None, context=None):
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+ if default is None:
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+ default = {}
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+ if context is None:
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+ context = {}
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+ default['ean13'] = False
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+ return super(product_product, self).copy(cr, uid, id, default=default, context=context)
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+
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+# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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