[odoo/odoo.git] / addons / sale / sale.py

# -*- 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 datetime, timedelta
import time
from openerp.osv import fields, osv
from openerp.tools.translate import _
from openerp.tools import DEFAULT_SERVER_DATE_FORMAT, DEFAULT_SERVER_DATETIME_FORMAT
import openerp.addons.decimal_precision as dp
from openerp import workflow

class res_company(osv.Model):
    _inherit = "res.company"
    _columns = {
        'sale_note': fields.text('Default Terms and Conditions', translate=True, help="Default terms and conditions for quotations."),
    }

class sale_order(osv.osv):
    _name = "sale.order"
    _inherit = ['mail.thread', 'ir.needaction_mixin']
    _description = "Sales Order"
    _track = {
        'state': {
            'sale.mt_order_confirmed': lambda self, cr, uid, obj, ctx=None: obj.state in ['manual'],
            'sale.mt_order_sent': lambda self, cr, uid, obj, ctx=None: obj.state in ['sent']
        },
    }

    def _amount_line_tax(self, cr, uid, line, context=None):
        val = 0.0
        for c in self.pool.get('account.tax').compute_all(cr, uid, line.tax_id, line.price_unit * (1-(line.discount or 0.0)/100.0), line.product_uom_qty, line.product_id, line.order_id.partner_id)['taxes']:
            val += c.get('amount', 0.0)
        return val

    def _amount_all_wrapper(self, cr, uid, ids, field_name, arg, context=None):
        """ Wrapper because of direct method passing as parameter for function fields """
        return self._amount_all(cr, uid, ids, field_name, arg, context=context)

    def _amount_all(self, cr, uid, ids, field_name, arg, context=None):
        cur_obj = self.pool.get('res.currency')
        res = {}
        for order in self.browse(cr, uid, ids, context=context):
            res[order.id] = {
                'amount_untaxed': 0.0,
                'amount_tax': 0.0,
                'amount_total': 0.0,
            }
            val = val1 = 0.0
            cur = order.pricelist_id.currency_id
            for line in order.order_line:
                val1 += line.price_subtotal
                val += self._amount_line_tax(cr, uid, line, context=context)
            res[order.id]['amount_tax'] = cur_obj.round(cr, uid, cur, val)
            res[order.id]['amount_untaxed'] = cur_obj.round(cr, uid, cur, val1)
            res[order.id]['amount_total'] = res[order.id]['amount_untaxed'] + res[order.id]['amount_tax']
        return res


    def _invoiced_rate(self, cursor, user, ids, name, arg, context=None):
        res = {}
        for sale in self.browse(cursor, user, ids, context=context):
            if sale.invoiced:
                res[sale.id] = 100.0
                continue
            tot = 0.0
            for invoice in sale.invoice_ids:
                if invoice.state not in ('draft', 'cancel'):
                    tot += invoice.amount_untaxed
            if tot:
                res[sale.id] = min(100.0, tot * 100.0 / (sale.amount_untaxed or 1.00))
            else:
                res[sale.id] = 0.0
        return res

    def _invoice_exists(self, cursor, user, ids, name, arg, context=None):
        res = {}
        for sale in self.browse(cursor, user, ids, context=context):
            res[sale.id] = False
            if sale.invoice_ids:
                res[sale.id] = True
        return res

    def _invoiced(self, cursor, user, ids, name, arg, context=None):
        res = {}
        for sale in self.browse(cursor, user, ids, context=context):
            res[sale.id] = True
            invoice_existence = False
            for invoice in sale.invoice_ids:
                if invoice.state!='cancel':
                    invoice_existence = True
                    if invoice.state != 'paid':
                        res[sale.id] = False
                        break
            if not invoice_existence or sale.state == 'manual':
                res[sale.id] = False
        return res

    def _invoiced_search(self, cursor, user, obj, name, args, context=None):
        if not len(args):
            return []
        clause = ''
        sale_clause = ''
        no_invoiced = False
        for arg in args:
            if (arg[1] == '=' and arg[2]) or (arg[1] == '!=' and not arg[2]):
                clause += 'AND inv.state = \'paid\''
            else:
                clause += 'AND inv.state != \'cancel\' AND sale.state != \'cancel\'  AND inv.state <> \'paid\'  AND rel.order_id = sale.id '
                sale_clause = ',  sale_order AS sale '
                no_invoiced = True

        cursor.execute('SELECT rel.order_id ' \
                'FROM sale_order_invoice_rel AS rel, account_invoice AS inv '+ sale_clause + \
                'WHERE rel.invoice_id = inv.id ' + clause)
        res = cursor.fetchall()
        if no_invoiced:
            cursor.execute('SELECT sale.id ' \
                    'FROM sale_order AS sale ' \
                    'WHERE sale.id NOT IN ' \
                        '(SELECT rel.order_id ' \
                        'FROM sale_order_invoice_rel AS rel) and sale.state != \'cancel\'')
            res.extend(cursor.fetchall())
        if not res:
            return [('id', '=', 0)]
        return [('id', 'in', [x[0] for x in res])]

    def _get_order(self, cr, uid, ids, context=None):
        result = {}
        for line in self.pool.get('sale.order.line').browse(cr, uid, ids, context=context):
            result[line.order_id.id] = True
        return result.keys()

    def _get_default_company(self, cr, uid, context=None):
        company_id = self.pool.get('res.users')._get_company(cr, uid, context=context)
        if not company_id:
            raise osv.except_osv(_('Error!'), _('There is no default company for the current user!'))
        return company_id

    def _get_default_section_id(self, cr, uid, context=None):
        """ Gives default section by checking if present in the context """
        section_id = self._resolve_section_id_from_context(cr, uid, context=context) or False
        if not section_id:
            section_id = self.pool.get('res.users').browse(cr, uid, uid, context).default_section_id.id or False
        return section_id

    def _resolve_section_id_from_context(self, cr, uid, context=None):
        """ Returns ID of section based on the value of 'section_id'
            context key, or None if it cannot be resolved to a single
            Sales Team.
        """
        if context is None:
            context = {}
        if type(context.get('default_section_id')) in (int, long):
            return context.get('default_section_id')
        if isinstance(context.get('default_section_id'), basestring):
            section_ids = self.pool.get('crm.case.section').name_search(cr, uid, name=context['default_section_id'], context=context)
            if len(section_ids) == 1:
                return int(section_ids[0][0])
        return None

    _columns = {
        'name': fields.char('Order Reference', required=True, copy=False,
            readonly=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]}, select=True),
        'origin': fields.char('Source Document', help="Reference of the document that generated this sales order request."),
        'client_order_ref': fields.char('Reference/Description', copy=False),
        'state': fields.selection([
            ('draft', 'Draft Quotation'),
            ('sent', 'Quotation Sent'),
            ('cancel', 'Cancelled'),
            ('waiting_date', 'Waiting Schedule'),
            ('progress', 'Sales Order'),
            ('manual', 'Sale to Invoice'),
            ('shipping_except', 'Shipping Exception'),
            ('invoice_except', 'Invoice Exception'),
            ('done', 'Done'),
            ], 'Status', readonly=True, copy=False, help="Gives the status of the quotation or sales order.\
              \nThe exception status is automatically set when a cancel operation occurs \
              in the invoice validation (Invoice Exception) or in the picking list process (Shipping Exception).\nThe 'Waiting Schedule' status is set when the invoice is confirmed\
               but waiting for the scheduler to run on the order date.", select=True),
        'date_order': fields.datetime('Date', required=True, readonly=True, select=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]}, copy=False),
        'create_date': fields.datetime('Creation Date', readonly=True, select=True, help="Date on which sales order is created."),
        'date_confirm': fields.date('Confirmation Date', readonly=True, select=True, help="Date on which sales order is confirmed.", copy=False),
        'user_id': fields.many2one('res.users', 'Salesperson', states={'draft': [('readonly', False)], 'sent': [('readonly', False)]}, select=True, track_visibility='onchange'),
        'partner_id': fields.many2one('res.partner', 'Customer', readonly=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]}, required=True, change_default=True, select=True, track_visibility='always'),
        'partner_invoice_id': fields.many2one('res.partner', 'Invoice Address', readonly=True, required=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]}, help="Invoice address for current sales order."),
        'partner_shipping_id': fields.many2one('res.partner', 'Delivery Address', readonly=True, required=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]}, help="Delivery address for current sales order."),
        'order_policy': fields.selection([
                ('manual', 'On Demand'),
            ], 'Create Invoice', required=True, readonly=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]},
            help="""This field controls how invoice and delivery operations are synchronized."""),
        'pricelist_id': fields.many2one('product.pricelist', 'Pricelist', required=True, readonly=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]}, help="Pricelist for current sales order."),
        'currency_id': fields.related('pricelist_id', 'currency_id', type="many2one", relation="res.currency", string="Currency", readonly=True, required=True),
        'project_id': fields.many2one('account.analytic.account', 'Contract / Analytic', readonly=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]}, help="The analytic account related to a sales order."),

        'order_line': fields.one2many('sale.order.line', 'order_id', 'Order Lines', readonly=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]}, copy=True),
        'invoice_ids': fields.many2many('account.invoice', 'sale_order_invoice_rel', 'order_id', 'invoice_id', 'Invoices', readonly=True, copy=False, help="This is the list of invoices that have been generated for this sales order. The same sales order may have been invoiced in several times (by line for example)."),
        'invoiced_rate': fields.function(_invoiced_rate, string='Invoiced Ratio', type='float'),
        'invoiced': fields.function(_invoiced, string='Paid',
            fnct_search=_invoiced_search, type='boolean', help="It indicates that an invoice has been paid."),
        'invoice_exists': fields.function(_invoice_exists, string='Invoiced',
            fnct_search=_invoiced_search, type='boolean', help="It indicates that sales order has at least one invoice."),
        'note': fields.text('Terms and conditions'),

        'amount_untaxed': fields.function(_amount_all_wrapper, digits_compute=dp.get_precision('Account'), string='Untaxed Amount',
            store={
                'sale.order': (lambda self, cr, uid, ids, c={}: ids, ['order_line'], 10),
                'sale.order.line': (_get_order, ['price_unit', 'tax_id', 'discount', 'product_uom_qty'], 10),
            },
            multi='sums', help="The amount without tax.", track_visibility='always'),
        'amount_tax': fields.function(_amount_all_wrapper, digits_compute=dp.get_precision('Account'), string='Taxes',
            store={
                'sale.order': (lambda self, cr, uid, ids, c={}: ids, ['order_line'], 10),
                'sale.order.line': (_get_order, ['price_unit', 'tax_id', 'discount', 'product_uom_qty'], 10),
            },
            multi='sums', help="The tax amount."),
        'amount_total': fields.function(_amount_all_wrapper, digits_compute=dp.get_precision('Account'), string='Total',
            store={
                'sale.order': (lambda self, cr, uid, ids, c={}: ids, ['order_line'], 10),
                'sale.order.line': (_get_order, ['price_unit', 'tax_id', 'discount', 'product_uom_qty'], 10),
            },
            multi='sums', help="The total amount."),

        'payment_term': fields.many2one('account.payment.term', 'Payment Term'),
        'fiscal_position': fields.many2one('account.fiscal.position', 'Fiscal Position'),
        'company_id': fields.many2one('res.company', 'Company'),
        'section_id': fields.many2one('crm.case.section', 'Sales Team'),
        'procurement_group_id': fields.many2one('procurement.group', 'Procurement group', copy=False),
        'product_id': fields.related('order_line', 'product_id', type='many2one', relation='product.product', string='Product'),
    }

    _defaults = {
        'date_order': fields.datetime.now,
        'order_policy': 'manual',
        'company_id': _get_default_company,
        'state': 'draft',
        'user_id': lambda obj, cr, uid, context: uid,
        'name': lambda obj, cr, uid, context: '/',
        'partner_invoice_id': lambda self, cr, uid, context: context.get('partner_id', False) and self.pool.get('res.partner').address_get(cr, uid, [context['partner_id']], ['invoice'])['invoice'],
        'partner_shipping_id': lambda self, cr, uid, context: context.get('partner_id', False) and self.pool.get('res.partner').address_get(cr, uid, [context['partner_id']], ['delivery'])['delivery'],
        'note': lambda self, cr, uid, context: self.pool.get('res.users').browse(cr, uid, uid, context=context).company_id.sale_note,
        'section_id': lambda s, cr, uid, c: s._get_default_section_id(cr, uid, c),
    }
    _sql_constraints = [
        ('name_uniq', 'unique(name, company_id)', 'Order Reference must be unique per Company!'),
    ]
    _order = 'date_order desc, id desc'

    # Form filling
    def unlink(self, cr, uid, ids, context=None):
        sale_orders = self.read(cr, uid, ids, ['state'], context=context)
        unlink_ids = []
        for s in sale_orders:
            if s['state'] in ['draft', 'cancel']:
                unlink_ids.append(s['id'])
            else:
                raise osv.except_osv(_('Invalid Action!'), _('In order to delete a confirmed sales order, you must cancel it before!'))

        return osv.osv.unlink(self, cr, uid, unlink_ids, context=context)

    def copy_quotation(self, cr, uid, ids, context=None):
        id = self.copy(cr, uid, ids[0], context=context)
        view_ref = self.pool.get('ir.model.data').get_object_reference(cr, uid, 'sale', 'view_order_form')
        view_id = view_ref and view_ref[1] or False,
        return {
            'type': 'ir.actions.act_window',
            'name': _('Sales Order'),
            'res_model': 'sale.order',
            'res_id': id,
            'view_type': 'form',
            'view_mode': 'form',
            'view_id': view_id,
            'target': 'current',
            'nodestroy': True,
        }

    def onchange_pricelist_id(self, cr, uid, ids, pricelist_id, order_lines, context=None):
        context = context or {}
        if not pricelist_id:
            return {}
        value = {
            'currency_id': self.pool.get('product.pricelist').browse(cr, uid, pricelist_id, context=context).currency_id.id
        }
        if not order_lines or order_lines == [(6, 0, [])]:
            return {'value': value}
        warning = {
            'title': _('Pricelist Warning!'),
            'message' : _('If you change the pricelist of this order (and eventually the currency), prices of existing order lines will not be updated.')
        }
        return {'warning': warning, 'value': value}

    def get_salenote(self, cr, uid, ids, partner_id, context=None):
        context_lang = context.copy() 
        if partner_id:
            partner_lang = self.pool.get('res.partner').browse(cr, uid, partner_id, context=context).lang
            context_lang.update({'lang': partner_lang})
        return self.pool.get('res.users').browse(cr, uid, uid, context=context_lang).company_id.sale_note

    def onchange_delivery_id(self, cr, uid, ids, company_id, partner_id, delivery_id, fiscal_position, context=None):
        r = {'value': {}}
        if not fiscal_position:
            if not company_id:
                company_id = self._get_default_company(cr, uid, context=context)
            fiscal_position = self.pool['account.fiscal.position'].get_fiscal_position(cr, uid, company_id, partner_id, delivery_id, context=context)
            if fiscal_position:
                r['value']['fiscal_position'] = fiscal_position
        return r

    def onchange_partner_id(self, cr, uid, ids, part, context=None):
        if not part:
            return {'value': {'partner_invoice_id': False, 'partner_shipping_id': False,  'payment_term': False, 'fiscal_position': False}}

        part = self.pool.get('res.partner').browse(cr, uid, part, context=context)
        addr = self.pool.get('res.partner').address_get(cr, uid, [part.id], ['delivery', 'invoice', 'contact'])
        pricelist = part.property_product_pricelist and part.property_product_pricelist.id or False
        payment_term = part.property_payment_term and part.property_payment_term.id or False
        dedicated_salesman = part.user_id and part.user_id.id or uid
        val = {
            'partner_invoice_id': addr['invoice'],
            'partner_shipping_id': addr['delivery'],
            'payment_term': payment_term,
            'user_id': dedicated_salesman,
        }
        delivery_onchange = self.onchange_delivery_id(cr, uid, ids, False, part.id, addr['delivery'], False,  context=context)
        val.update(delivery_onchange['value'])
        if pricelist:
            val['pricelist_id'] = pricelist
        sale_note = self.get_salenote(cr, uid, ids, part.id, context=context)
        if sale_note: val.update({'note': sale_note})  
        return {'value': val}

    def create(self, cr, uid, vals, context=None):
        if context is None:
            context = {}
        if vals.get('name', '/') == '/':
            vals['name'] = self.pool.get('ir.sequence').get(cr, uid, 'sale.order') or '/'
        if vals.get('partner_id') and any(f not in vals for f in ['partner_invoice_id', 'partner_shipping_id', 'pricelist_id', 'fiscal_position']):
            defaults = self.onchange_partner_id(cr, uid, [], vals['partner_id'], context=context)['value']
            if not vals.get('fiscal_position') and vals.get('partner_shipping_id'):
                delivery_onchange = self.onchange_delivery_id(cr, uid, [], vals.get('company_id'), None, vals['partner_id'], vals.get('partner_shipping_id'), context=context)
                defaults.update(delivery_onchange['value'])
            vals = dict(defaults, **vals)
        ctx = dict(context or {}, mail_create_nolog=True)
        new_id = super(sale_order, self).create(cr, uid, vals, context=ctx)
        self.message_post(cr, uid, [new_id], body=_("Quotation created"), context=ctx)
        return new_id

    def button_dummy(self, cr, uid, ids, context=None):
        return True

    # FIXME: deprecated method, overriders should be using _prepare_invoice() instead.
    #        can be removed after 6.1.
    def _inv_get(self, cr, uid, order, context=None):
        return {}

    def _prepare_invoice(self, cr, uid, order, lines, context=None):
        """Prepare the dict of values to create the new invoice for a
           sales order. This method may be overridden to implement custom
           invoice generation (making sure to call super() to establish
           a clean extension chain).

           :param browse_record order: sale.order record to invoice
           :param list(int) line: list of invoice line IDs that must be
                                  attached to the invoice
           :return: dict of value to create() the invoice
        """
        if context is None:
            context = {}
        journal_ids = self.pool.get('account.journal').search(cr, uid,
            [('type', '=', 'sale'), ('company_id', '=', order.company_id.id)],
            limit=1)
        if not journal_ids:
            raise osv.except_osv(_('Error!'),
                _('Please define sales journal for this company: "%s" (id:%d).') % (order.company_id.name, order.company_id.id))
        invoice_vals = {
            'name': order.client_order_ref or '',
            'origin': order.name,
            'type': 'out_invoice',
            'reference': order.client_order_ref or order.name,
            'account_id': order.partner_id.property_account_receivable.id,
            'partner_id': order.partner_invoice_id.id,
            'journal_id': journal_ids[0],
            'invoice_line': [(6, 0, lines)],
            'currency_id': order.pricelist_id.currency_id.id,
            'comment': order.note,
            'payment_term': order.payment_term and order.payment_term.id or False,
            'fiscal_position': order.fiscal_position.id or order.partner_id.property_account_position.id,
            'date_invoice': context.get('date_invoice', False),
            'company_id': order.company_id.id,
            'user_id': order.user_id and order.user_id.id or False,
            'section_id' : order.section_id.id
        }

        # Care for deprecated _inv_get() hook - FIXME: to be removed after 6.1
        invoice_vals.update(self._inv_get(cr, uid, order, context=context))
        return invoice_vals

    def _make_invoice(self, cr, uid, order, lines, context=None):
        inv_obj = self.pool.get('account.invoice')
        obj_invoice_line = self.pool.get('account.invoice.line')
        if context is None:
            context = {}
        invoiced_sale_line_ids = self.pool.get('sale.order.line').search(cr, uid, [('order_id', '=', order.id), ('invoiced', '=', True)], context=context)
        from_line_invoice_ids = []
        for invoiced_sale_line_id in self.pool.get('sale.order.line').browse(cr, uid, invoiced_sale_line_ids, context=context):
            for invoice_line_id in invoiced_sale_line_id.invoice_lines:
                if invoice_line_id.invoice_id.id not in from_line_invoice_ids:
                    from_line_invoice_ids.append(invoice_line_id.invoice_id.id)
        for preinv in order.invoice_ids:
            if preinv.state not in ('cancel',) and preinv.id not in from_line_invoice_ids:
                for preline in preinv.invoice_line:
                    inv_line_id = obj_invoice_line.copy(cr, uid, preline.id, {'invoice_id': False, 'price_unit': -preline.price_unit})
                    lines.append(inv_line_id)
        inv = self._prepare_invoice(cr, uid, order, lines, context=context)
        inv_id = inv_obj.create(cr, uid, inv, context=context)
        data = inv_obj.onchange_payment_term_date_invoice(cr, uid, [inv_id], inv['payment_term'], time.strftime(DEFAULT_SERVER_DATE_FORMAT))
        if data.get('value', False):
            inv_obj.write(cr, uid, [inv_id], data['value'], context=context)
        inv_obj.button_compute(cr, uid, [inv_id])
        return inv_id

    def print_quotation(self, cr, uid, ids, context=None):
        '''
        This function prints the sales order and mark it as sent, so that we can see more easily the next step of the workflow
        '''
        assert len(ids) == 1, 'This option should only be used for a single id at a time'
        self.signal_workflow(cr, uid, ids, 'quotation_sent')
        return self.pool['report'].get_action(cr, uid, ids, 'sale.report_saleorder', context=context)

    def manual_invoice(self, cr, uid, ids, context=None):
        """ create invoices for the given sales orders (ids), and open the form
            view of one of the newly created invoices
        """
        mod_obj = self.pool.get('ir.model.data')
        
        # create invoices through the sales orders' workflow
        inv_ids0 = set(inv.id for sale in self.browse(cr, uid, ids, context) for inv in sale.invoice_ids)
        self.signal_workflow(cr, uid, ids, 'manual_invoice')
        inv_ids1 = set(inv.id for sale in self.browse(cr, uid, ids, context) for inv in sale.invoice_ids)
        # determine newly created invoices
        new_inv_ids = list(inv_ids1 - inv_ids0)

        res = mod_obj.get_object_reference(cr, uid, 'account', 'invoice_form')
        res_id = res and res[1] or False,

        return {
            'name': _('Customer Invoices'),
            'view_type': 'form',
            'view_mode': 'form',
            'view_id': [res_id],
            'res_model': 'account.invoice',
            'context': "{'type':'out_invoice'}",
            'type': 'ir.actions.act_window',
            'nodestroy': True,
            'target': 'current',
            'res_id': new_inv_ids and new_inv_ids[0] or False,
        }

    def action_view_invoice(self, cr, uid, ids, context=None):
        '''
        This function returns an action that display existing invoices of given sales order ids. It can either be a in a list or in a form view, if there is only one invoice to show.
        '''
        mod_obj = self.pool.get('ir.model.data')
        act_obj = self.pool.get('ir.actions.act_window')

        result = mod_obj.get_object_reference(cr, uid, 'account', 'action_invoice_tree1')
        id = result and result[1] or False
        result = act_obj.read(cr, uid, [id], context=context)[0]
        #compute the number of invoices to display
        inv_ids = []
        for so in self.browse(cr, uid, ids, context=context):
            inv_ids += [invoice.id for invoice in so.invoice_ids]
        #choose the view_mode accordingly
        if len(inv_ids)>1:
            result['domain'] = "[('id','in',["+','.join(map(str, inv_ids))+"])]"
        else:
            res = mod_obj.get_object_reference(cr, uid, 'account', 'invoice_form')
            result['views'] = [(res and res[1] or False, 'form')]
            result['res_id'] = inv_ids and inv_ids[0] or False
        return result

    def test_no_product(self, cr, uid, order, context):
        for line in order.order_line:
            if line.product_id and (line.product_id.type<>'service'):
                return False
        return True

    def action_invoice_create(self, cr, uid, ids, grouped=False, states=None, date_invoice = False, context=None):
        if states is None:
            states = ['confirmed', 'done', 'exception']
        res = False
        invoices = {}
        invoice_ids = []
        invoice = self.pool.get('account.invoice')
        obj_sale_order_line = self.pool.get('sale.order.line')
        partner_currency = {}
        # If date was specified, use it as date invoiced, usefull when invoices are generated this month and put the
        # last day of the last month as invoice date
        if date_invoice:
            context = dict(context or {}, date_invoice=date_invoice)
        for o in self.browse(cr, uid, ids, context=context):
            currency_id = o.pricelist_id.currency_id.id
            if (o.partner_id.id in partner_currency) and (partner_currency[o.partner_id.id] <> currency_id):
                raise osv.except_osv(
                    _('Error!'),
                    _('You cannot group sales having different currencies for the same partner.'))

            partner_currency[o.partner_id.id] = currency_id
            lines = []
            for line in o.order_line:
                if line.invoiced:
                    continue
                elif (line.state in states):
                    lines.append(line.id)
            created_lines = obj_sale_order_line.invoice_line_create(cr, uid, lines)
            if created_lines:
                invoices.setdefault(o.partner_invoice_id.id or o.partner_id.id, []).append((o, created_lines))
        if not invoices:
            for o in self.browse(cr, uid, ids, context=context):
                for i in o.invoice_ids:
                    if i.state == 'draft':
                        return i.id
        for val in invoices.values():
            if grouped:
                res = self._make_invoice(cr, uid, val[0][0], reduce(lambda x, y: x + y, [l for o, l in val], []), context=context)
                invoice_ref = ''
                origin_ref = ''
                for o, l in val:
                    invoice_ref += (o.client_order_ref or o.name) + '|'
                    origin_ref += (o.origin or o.name) + '|'
                    self.write(cr, uid, [o.id], {'state': 'progress'})
                    cr.execute('insert into sale_order_invoice_rel (order_id,invoice_id) values (%s,%s)', (o.id, res))
                    self.invalidate_cache(cr, uid, ['invoice_ids'], [o.id], context=context)
                #remove last '|' in invoice_ref
                if len(invoice_ref) >= 1:
                    invoice_ref = invoice_ref[:-1]
                if len(origin_ref) >= 1:
                    origin_ref = origin_ref[:-1]
                invoice.write(cr, uid, [res], {'origin': origin_ref, 'name': invoice_ref})
            else:
                for order, il in val:
                    res = self._make_invoice(cr, uid, order, il, context=context)
                    invoice_ids.append(res)
                    self.write(cr, uid, [order.id], {'state': 'progress'})
                    cr.execute('insert into sale_order_invoice_rel (order_id,invoice_id) values (%s,%s)', (order.id, res))
                    self.invalidate_cache(cr, uid, ['invoice_ids'], [order.id], context=context)
        return res

    def action_invoice_cancel(self, cr, uid, ids, context=None):
        self.write(cr, uid, ids, {'state': 'invoice_except'}, context=context)
        return True

    def action_invoice_end(self, cr, uid, ids, context=None):
        for this in self.browse(cr, uid, ids, context=context):
            for line in this.order_line:
                if line.state == 'exception':
                    line.write({'state': 'confirmed'})
            if this.state == 'invoice_except':
                this.write({'state': 'progress'})
        return True

    def action_cancel(self, cr, uid, ids, context=None):
        if context is None:
            context = {}
        sale_order_line_obj = self.pool.get('sale.order.line')
        account_invoice_obj = self.pool.get('account.invoice')
        for sale in self.browse(cr, uid, ids, context=context):
            for inv in sale.invoice_ids:
                if inv.state not in ('draft', 'cancel'):
                    raise osv.except_osv(
                        _('Cannot cancel this sales order!'),
                        _('First cancel all invoices attached to this sales order.'))
                inv.signal_workflow('invoice_cancel')
            sale_order_line_obj.write(cr, uid, [l.id for l in  sale.order_line],
                    {'state': 'cancel'})
        self.write(cr, uid, ids, {'state': 'cancel'})
        return True

    def action_button_confirm(self, cr, uid, ids, context=None):
        assert len(ids) == 1, 'This option should only be used for a single id at a time.'
        self.signal_workflow(cr, uid, ids, 'order_confirm')
        return True
        
    def action_wait(self, cr, uid, ids, context=None):
        context = context or {}
        for o in self.browse(cr, uid, ids):
            if not o.order_line:
                raise osv.except_osv(_('Error!'),_('You cannot confirm a sales order which has no line.'))
            noprod = self.test_no_product(cr, uid, o, context)
            if (o.order_policy == 'manual') or noprod:
                self.write(cr, uid, [o.id], {'state': 'manual', 'date_confirm': fields.date.context_today(self, cr, uid, context=context)})
            else:
                self.write(cr, uid, [o.id], {'state': 'progress', 'date_confirm': fields.date.context_today(self, cr, uid, context=context)})
            self.pool.get('sale.order.line').button_confirm(cr, uid, [x.id for x in o.order_line])
        return True

    def action_quotation_send(self, cr, uid, ids, context=None):
        '''
        This function opens a window to compose an email, with the edi sale template message loaded by default
        '''
        assert len(ids) == 1, 'This option should only be used for a single id at a time.'
        ir_model_data = self.pool.get('ir.model.data')
        try:
            template_id = ir_model_data.get_object_reference(cr, uid, 'sale', 'email_template_edi_sale')[1]
        except ValueError:
            template_id = False
        try:
            compose_form_id = ir_model_data.get_object_reference(cr, uid, 'mail', 'email_compose_message_wizard_form')[1]
        except ValueError:
            compose_form_id = False 
        ctx = dict()
        ctx.update({
            'default_model': 'sale.order',
            'default_res_id': ids[0],
            'default_use_template': bool(template_id),
            'default_template_id': template_id,
            'default_composition_mode': 'comment',
            'mark_so_as_sent': True
        })
        return {
            'type': 'ir.actions.act_window',
            'view_type': 'form',
            'view_mode': 'form',
            'res_model': 'mail.compose.message',
            'views': [(compose_form_id, 'form')],
            'view_id': compose_form_id,
            'target': 'new',
            'context': ctx,
        }

    def action_done(self, cr, uid, ids, context=None):
        for order in self.browse(cr, uid, ids, context=context):
            self.pool.get('sale.order.line').write(cr, uid, [line.id for line in order.order_line], {'state': 'done'}, context=context)
        return self.write(cr, uid, ids, {'state': 'done'}, context=context)

    def _prepare_order_line_procurement(self, cr, uid, order, line, group_id=False, context=None):
        date_planned = self._get_date_planned(cr, uid, order, line, order.date_order, context=context)
        return {
            'name': line.name,
            'origin': order.name,
            'date_planned': date_planned,
            'product_id': line.product_id.id,
            'product_qty': line.product_uom_qty,
            'product_uom': line.product_uom.id,
            'product_uos_qty': (line.product_uos and line.product_uos_qty) or line.product_uom_qty,
            'product_uos': (line.product_uos and line.product_uos.id) or line.product_uom.id,
            'company_id': order.company_id.id,
            'group_id': group_id,
            'invoice_state': (order.order_policy == 'picking') and '2binvoiced' or 'none',
            'sale_line_id': line.id
        }

    def _get_date_planned(self, cr, uid, order, line, start_date, context=None):
        date_planned = datetime.strptime(start_date, DEFAULT_SERVER_DATETIME_FORMAT) + timedelta(days=line.delay or 0.0)
        return date_planned

    def _prepare_procurement_group(self, cr, uid, order, context=None):
        return {'name': order.name, 'partner_id': order.partner_shipping_id.id}

    def procurement_needed(self, cr, uid, ids, context=None):
        #when sale is installed only, there is no need to create procurements, that's only
        #further installed modules (sale_service, sale_stock) that will change this.
        sale_line_obj = self.pool.get('sale.order.line')
        res = []
        for order in self.browse(cr, uid, ids, context=context):
            res.append(sale_line_obj.need_procurement(cr, uid, [line.id for line in order.order_line], context=context))
        return any(res)

    def action_ignore_delivery_exception(self, cr, uid, ids, context=None):
        for sale_order in self.browse(cr, uid, ids, context=context):
            self.write(cr, uid, ids, {'state': 'progress' if sale_order.invoice_exists else 'manual'}, context=context)
        return True

    def action_ship_create(self, cr, uid, ids, context=None):
        """Create the required procurements to supply sales order lines, also connecting
        the procurements to appropriate stock moves in order to bring the goods to the
        sales order's requested location.

        :return: True
        """
        procurement_obj = self.pool.get('procurement.order')
        sale_line_obj = self.pool.get('sale.order.line')
        for order in self.browse(cr, uid, ids, context=context):
            proc_ids = []
            vals = self._prepare_procurement_group(cr, uid, order, context=context)
            if not order.procurement_group_id:
                group_id = self.pool.get("procurement.group").create(cr, uid, vals, context=context)
                order.write({'procurement_group_id': group_id})

            for line in order.order_line:
                #Try to fix exception procurement (possible when after a shipping exception the user choose to recreate)
                if line.procurement_ids:
                    #first check them to see if they are in exception or not (one of the related moves is cancelled)
                    procurement_obj.check(cr, uid, [x.id for x in line.procurement_ids if x.state not in ['cancel', 'done']])
                    line.refresh()
                    #run again procurement that are in exception in order to trigger another move
                    proc_ids += [x.id for x in line.procurement_ids if x.state in ('exception', 'cancel')]
                    procurement_obj.reset_to_confirmed(cr, uid, proc_ids, context=context)
                elif sale_line_obj.need_procurement(cr, uid, [line.id], context=context):
                    if (line.state == 'done') or not line.product_id:
                        continue
                    vals = self._prepare_order_line_procurement(cr, uid, order, line, group_id=order.procurement_group_id.id, context=context)
                    proc_id = procurement_obj.create(cr, uid, vals, context=context)
                    proc_ids.append(proc_id)
            #Confirm procurement order such that rules will be applied on it
            #note that the workflow normally ensure proc_ids isn't an empty list
            procurement_obj.run(cr, uid, proc_ids, context=context)

            #if shipping was in exception and the user choose to recreate the delivery order, write the new status of SO
            if order.state == 'shipping_except':
                val = {'state': 'progress', 'shipped': False}

                if (order.order_policy == 'manual'):
                    for line in order.order_line:
                        if (not line.invoiced) and (line.state not in ('cancel', 'draft')):
                            val['state'] = 'manual'
                            break
                order.write(val)
        return True



    def onchange_fiscal_position(self, cr, uid, ids, fiscal_position, order_lines, context=None):
        '''Update taxes of order lines for each line where a product is defined

        :param list ids: not used
        :param int fiscal_position: sale order fiscal position
        :param list order_lines: command list for one2many write method
        '''
        order_line = []
        fiscal_obj = self.pool.get('account.fiscal.position')
        product_obj = self.pool.get('product.product')
        line_obj = self.pool.get('sale.order.line')

        fpos = False
        if fiscal_position:
            fpos = fiscal_obj.browse(cr, uid, fiscal_position, context=context)
        
        for line in order_lines:
            # create    (0, 0,  { fields })
            # update    (1, ID, { fields })
            if line[0] in [0, 1]:
                prod = None
                if line[2].get('product_id'):
                    prod = product_obj.browse(cr, uid, line[2]['product_id'], context=context)
                elif line[1]:
                    prod =  line_obj.browse(cr, uid, line[1], context=context).product_id
                if prod and prod.taxes_id:
                    line[2]['tax_id'] = [[6, 0, fiscal_obj.map_tax(cr, uid, fpos, prod.taxes_id)]]
                order_line.append(line)

            # link      (4, ID)
            # link all  (6, 0, IDS)
            elif line[0] in [4, 6]:
                line_ids = line[0] == 4 and [line[1]] or line[2]
                for line_id in line_ids:
                    prod = line_obj.browse(cr, uid, line_id, context=context).product_id
                    if prod and prod.taxes_id:
                        order_line.append([1, line_id, {'tax_id': [[6, 0, fiscal_obj.map_tax(cr, uid, fpos, prod.taxes_id)]]}])
                    else:
                        order_line.append([4, line_id])
            else:
                order_line.append(line)
        return {'value': {'order_line': order_line}}

    def test_procurements_done(self, cr, uid, ids, context=None):
        for sale in self.browse(cr, uid, ids, context=context):
            for line in sale.order_line:
                if not all([x.state == 'done' for x in line.procurement_ids]):
                    return False
        return True

    def test_procurements_except(self, cr, uid, ids, context=None):
        for sale in self.browse(cr, uid, ids, context=context):
            for line in sale.order_line:
                if any([x.state == 'cancel' for x in line.procurement_ids]):
                    return True
        return False


# TODO add a field price_unit_uos
# - update it on change product and unit price
# - use it in report if there is a uos
class sale_order_line(osv.osv):

    def need_procurement(self, cr, uid, ids, context=None):
        #when sale is installed only, there is no need to create procurements, that's only
        #further installed modules (sale_service, sale_stock) that will change this.
        prod_obj = self.pool.get('product.product')
        for line in self.browse(cr, uid, ids, context=context):
            if prod_obj.need_procurement(cr, uid, [line.product_id.id], context=context):
                return True
        return False

    def _amount_line(self, cr, uid, ids, field_name, arg, context=None):
        tax_obj = self.pool.get('account.tax')
        cur_obj = self.pool.get('res.currency')
        res = {}
        if context is None:
            context = {}
        for line in self.browse(cr, uid, ids, context=context):
            price = line.price_unit * (1 - (line.discount or 0.0) / 100.0)
            taxes = tax_obj.compute_all(cr, uid, line.tax_id, price, line.product_uom_qty, line.product_id, line.order_id.partner_id)
            cur = line.order_id.pricelist_id.currency_id
            res[line.id] = cur_obj.round(cr, uid, cur, taxes['total'])
        return res

    def _get_uom_id(self, cr, uid, *args):
        try:
            proxy = self.pool.get('ir.model.data')
            result = proxy.get_object_reference(cr, uid, 'product', 'product_uom_unit')
            return result[1]
        except Exception, ex:
            return False

    def _fnct_line_invoiced(self, cr, uid, ids, field_name, args, context=None):
        res = dict.fromkeys(ids, False)
        for this in self.browse(cr, uid, ids, context=context):
            res[this.id] = this.invoice_lines and \
                all(iline.invoice_id.state != 'cancel' for iline in this.invoice_lines) 
        return res

    def _order_lines_from_invoice(self, cr, uid, ids, context=None):
        # direct access to the m2m table is the less convoluted way to achieve this (and is ok ACL-wise)
        cr.execute("""SELECT DISTINCT sol.id FROM sale_order_invoice_rel rel JOIN
                                                  sale_order_line sol ON (sol.order_id = rel.order_id)
                                    WHERE rel.invoice_id = ANY(%s)""", (list(ids),))
        return [i[0] for i in cr.fetchall()]

    def _get_price_reduce(self, cr, uid, ids, field_name, arg, context=None):
        res = dict.fromkeys(ids, 0.0)
        for line in self.browse(cr, uid, ids, context=context):
            res[line.id] = line.price_subtotal / line.product_uom_qty
        return res

    _name = 'sale.order.line'
    _description = 'Sales Order Line'
    _columns = {
        'order_id': fields.many2one('sale.order', 'Order Reference', required=True, ondelete='cascade', select=True, readonly=True, states={'draft':[('readonly',False)]}),
        'name': fields.text('Description', required=True, readonly=True, states={'draft': [('readonly', False)]}),
        'sequence': fields.integer('Sequence', help="Gives the sequence order when displaying a list of sales order lines."),
        'product_id': fields.many2one('product.product', 'Product', domain=[('sale_ok', '=', True)], change_default=True, readonly=True, states={'draft': [('readonly', False)]}, ondelete='restrict'),
        'invoice_lines': fields.many2many('account.invoice.line', 'sale_order_line_invoice_rel', 'order_line_id', 'invoice_id', 'Invoice Lines', readonly=True, copy=False),
        'invoiced': fields.function(_fnct_line_invoiced, string='Invoiced', type='boolean',
            store={
                'account.invoice': (_order_lines_from_invoice, ['state'], 10),
                'sale.order.line': (lambda self,cr,uid,ids,ctx=None: ids, ['invoice_lines'], 10)
            }),
        'price_unit': fields.float('Unit Price', required=True, digits_compute= dp.get_precision('Product Price'), readonly=True, states={'draft': [('readonly', False)]}),
        'price_subtotal': fields.function(_amount_line, string='Subtotal', digits_compute= dp.get_precision('Account')),
        'price_reduce': fields.function(_get_price_reduce, type='float', string='Price Reduce', digits_compute=dp.get_precision('Product Price')),
        'tax_id': fields.many2many('account.tax', 'sale_order_tax', 'order_line_id', 'tax_id', 'Taxes', readonly=True, states={'draft': [('readonly', False)]}),
        'address_allotment_id': fields.many2one('res.partner', 'Allotment Partner',help="A partner to whom the particular product needs to be allotted."),
        'product_uom_qty': fields.float('Quantity', digits_compute= dp.get_precision('Product UoS'), required=True, readonly=True, states={'draft': [('readonly', False)]}),
        'product_uom': fields.many2one('product.uom', 'Unit of Measure ', required=True, readonly=True, states={'draft': [('readonly', False)]}),
        'product_uos_qty': fields.float('Quantity (UoS)' ,digits_compute= dp.get_precision('Product UoS'), readonly=True, states={'draft': [('readonly', False)]}),
        'product_uos': fields.many2one('product.uom', 'Product UoS'),
        'discount': fields.float('Discount (%)', digits_compute= dp.get_precision('Discount'), readonly=True, states={'draft': [('readonly', False)]}),
        'th_weight': fields.float('Weight', readonly=True, states={'draft': [('readonly', False)]}),
        'state': fields.selection(
                [('cancel', 'Cancelled'),('draft', 'Draft'),('confirmed', 'Confirmed'),('exception', 'Exception'),('done', 'Done')],
                'Status', required=True, readonly=True, copy=False,
                help='* The \'Draft\' status is set when the related sales order in draft status. \
                    \n* The \'Confirmed\' status is set when the related sales order is confirmed. \
                    \n* The \'Exception\' status is set when the related sales order is set as exception. \
                    \n* The \'Done\' status is set when the sales order line has been picked. \
                    \n* The \'Cancelled\' status is set when a user cancel the sales order related.'),
        'order_partner_id': fields.related('order_id', 'partner_id', type='many2one', relation='res.partner', store=True, string='Customer'),
        'salesman_id':fields.related('order_id', 'user_id', type='many2one', relation='res.users', store=True, string='Salesperson'),
        'company_id': fields.related('order_id', 'company_id', type='many2one', relation='res.company', string='Company', store=True, readonly=True),
        'delay': fields.float('Delivery Lead Time', required=True, help="Number of days between the order confirmation and the shipping of the products to the customer", readonly=True, states={'draft': [('readonly', False)]}),
        'procurement_ids': fields.one2many('procurement.order', 'sale_line_id', 'Procurements'),
    }
    _order = 'order_id desc, sequence, id'
    _defaults = {
        'product_uom' : _get_uom_id,
        'discount': 0.0,
        'product_uom_qty': 1,
        'product_uos_qty': 1,
        'sequence': 10,
        'state': 'draft',
        'price_unit': 0.0,
        'delay': 0.0,
    }



    def _get_line_qty(self, cr, uid, line, context=None):
        if line.product_uos:
            return line.product_uos_qty or 0.0
        return line.product_uom_qty

    def _get_line_uom(self, cr, uid, line, context=None):
        if line.product_uos:
            return line.product_uos.id
        return line.product_uom.id

    def _prepare_order_line_invoice_line(self, cr, uid, line, account_id=False, context=None):
        """Prepare the dict of values to create the new invoice line for a
           sales order line. This method may be overridden to implement custom
           invoice generation (making sure to call super() to establish
           a clean extension chain).

           :param browse_record line: sale.order.line record to invoice
           :param int account_id: optional ID of a G/L account to force
               (this is used for returning products including service)
           :return: dict of values to create() the invoice line
        """
        res = {}
        if not line.invoiced:
            if not account_id:
                if line.product_id:
                    account_id = line.product_id.property_account_income.id
                    if not account_id:
                        account_id = line.product_id.categ_id.property_account_income_categ.id
                    if not account_id:
                        raise osv.except_osv(_('Error!'),
                                _('Please define income account for this product: "%s" (id:%d).') % \
                                    (line.product_id.name, line.product_id.id,))
                else:
                    prop = self.pool.get('ir.property').get(cr, uid,
                            'property_account_income_categ', 'product.category',
                            context=context)
                    account_id = prop and prop.id or False
            uosqty = self._get_line_qty(cr, uid, line, context=context)
            uos_id = self._get_line_uom(cr, uid, line, context=context)
            pu = 0.0
            if uosqty:
                pu = round(line.price_unit * line.product_uom_qty / uosqty,
                        self.pool.get('decimal.precision').precision_get(cr, uid, 'Product Price'))
            fpos = line.order_id.fiscal_position or False
            account_id = self.pool.get('account.fiscal.position').map_account(cr, uid, fpos, account_id)
            if not account_id:
                raise osv.except_osv(_('Error!'),
                            _('There is no Fiscal Position defined or Income category account defined for default properties of Product categories.'))
            res = {
                'name': line.name,
                'sequence': line.sequence,
                'origin': line.order_id.name,
                'account_id': account_id,
                'price_unit': pu,
                'quantity': uosqty,
                'discount': line.discount,
                'uos_id': uos_id,
                'product_id': line.product_id.id or False,
                'invoice_line_tax_id': [(6, 0, [x.id for x in line.tax_id])],
                'account_analytic_id': line.order_id.project_id and line.order_id.project_id.id or False,
            }

        return res

    def invoice_line_create(self, cr, uid, ids, context=None):
        if context is None:
            context = {}

        create_ids = []
        sales = set()
        for line in self.browse(cr, uid, ids, context=context):
            vals = self._prepare_order_line_invoice_line(cr, uid, line, False, context)
            if vals:
                inv_id = self.pool.get('account.invoice.line').create(cr, uid, vals, context=context)
                self.write(cr, uid, [line.id], {'invoice_lines': [(4, inv_id)]}, context=context)
                sales.add(line.order_id.id)
                create_ids.append(inv_id)
        # Trigger workflow events
        for sale_id in sales:
            workflow.trg_write(uid, 'sale.order', sale_id, cr)
        return create_ids

    def button_cancel(self, cr, uid, ids, context=None):
        for line in self.browse(cr, uid, ids, context=context):
            if line.invoiced:
                raise osv.except_osv(_('Invalid Action!'), _('You cannot cancel a sales order line that has already been invoiced.'))
        return self.write(cr, uid, ids, {'state': 'cancel'})

    def button_confirm(self, cr, uid, ids, context=None):
        return self.write(cr, uid, ids, {'state': 'confirmed'})

    def button_done(self, cr, uid, ids, context=None):
        res = self.write(cr, uid, ids, {'state': 'done'})
        for line in self.browse(cr, uid, ids, context=context):
            workflow.trg_write(uid, 'sale.order', line.order_id.id, cr)
        return res

    def uos_change(self, cr, uid, ids, product_uos, product_uos_qty=0, product_id=None):
        product_obj = self.pool.get('product.product')
        if not product_id:
            return {'value': {'product_uom': product_uos,
                'product_uom_qty': product_uos_qty}, 'domain': {}}

        product = product_obj.browse(cr, uid, product_id)
        value = {
            'product_uom': product.uom_id.id,
        }
        # FIXME must depend on uos/uom of the product and not only of the coeff.
        try:
            value.update({
                'product_uom_qty': product_uos_qty / product.uos_coeff,
                'th_weight': product_uos_qty / product.uos_coeff * product.weight
            })
        except ZeroDivisionError:
            pass
        return {'value': value}

    def create(self, cr, uid, values, context=None):
        if values.get('order_id') and values.get('product_id') and  any(f not in values for f in ['name', 'price_unit', 'type', 'product_uom_qty', 'product_uom']):
            order = self.pool['sale.order'].read(cr, uid, values['order_id'], ['pricelist_id', 'partner_id', 'date_order', 'fiscal_position'], context=context)
            defaults = self.product_id_change(cr, uid, [], order['pricelist_id'][0], values['product_id'],
                qty=float(values.get('product_uom_qty', False)),
                uom=values.get('product_uom', False),
                qty_uos=float(values.get('product_uos_qty', False)),
                uos=values.get('product_uos', False),
                name=values.get('name', False),
                partner_id=order['partner_id'][0],
                date_order=order['date_order'],
                fiscal_position=order['fiscal_position'][0] if order['fiscal_position'] else False,
                flag=False,  # Force name update
                context=context
            )['value']
            if defaults.get('tax_id'):
                defaults['tax_id'] = [[6, 0, defaults['tax_id']]]
            values = dict(defaults, **values)
        return super(sale_order_line, self).create(cr, uid, values, context=context)

    def product_id_change(self, cr, uid, ids, pricelist, product, qty=0,
            uom=False, qty_uos=0, uos=False, name='', partner_id=False,
            lang=False, update_tax=True, date_order=False, packaging=False, fiscal_position=False, flag=False, context=None):
        context = context or {}
        lang = lang or context.get('lang', False)
        if not partner_id:
            raise osv.except_osv(_('No Customer Defined!'), _('Before choosing a product,\n select a customer in the sales form.'))
        warning = False
        product_uom_obj = self.pool.get('product.uom')
        partner_obj = self.pool.get('res.partner')
        product_obj = self.pool.get('product.product')
        context = {'lang': lang, 'partner_id': partner_id}
        partner = partner_obj.browse(cr, uid, partner_id)
        lang = partner.lang
        context_partner = {'lang': lang, 'partner_id': partner_id}

        if not product:
            return {'value': {'th_weight': 0,
                'product_uos_qty': qty}, 'domain': {'product_uom': [],
                   'product_uos': []}}
        if not date_order:
            date_order = time.strftime(DEFAULT_SERVER_DATE_FORMAT)

        result = {}
        warning_msgs = ''
        product_obj = product_obj.browse(cr, uid, product, context=context_partner)

        uom2 = False
        if uom:
            uom2 = product_uom_obj.browse(cr, uid, uom)
            if product_obj.uom_id.category_id.id != uom2.category_id.id:
                uom = False
        if uos:
            if product_obj.uos_id:
                uos2 = product_uom_obj.browse(cr, uid, uos)
                if product_obj.uos_id.category_id.id != uos2.category_id.id:
                    uos = False
            else:
                uos = False

        fpos = False
        if not fiscal_position:
            fpos = partner.property_account_position or False
        else:
            fpos = self.pool.get('account.fiscal.position').browse(cr, uid, fiscal_position)
        if update_tax: #The quantity only have changed
            result['tax_id'] = self.pool.get('account.fiscal.position').map_tax(cr, uid, fpos, product_obj.taxes_id)

        if not flag:
            result['name'] = self.pool.get('product.product').name_get(cr, uid, [product_obj.id], context=context_partner)[0][1]
            if product_obj.description_sale:
                result['name'] += '\n'+product_obj.description_sale
        domain = {}
        if (not uom) and (not uos):
            result['product_uom'] = product_obj.uom_id.id
            if product_obj.uos_id:
                result['product_uos'] = product_obj.uos_id.id
                result['product_uos_qty'] = qty * product_obj.uos_coeff
                uos_category_id = product_obj.uos_id.category_id.id
            else:
                result['product_uos'] = False
                result['product_uos_qty'] = qty
                uos_category_id = False
            result['th_weight'] = qty * product_obj.weight
            domain = {'product_uom':
                        [('category_id', '=', product_obj.uom_id.category_id.id)],
                        'product_uos':
                        [('category_id', '=', uos_category_id)]}
        elif uos and not uom: # only happens if uom is False
            result['product_uom'] = product_obj.uom_id and product_obj.uom_id.id
            result['product_uom_qty'] = qty_uos / product_obj.uos_coeff
            result['th_weight'] = result['product_uom_qty'] * product_obj.weight
        elif uom: # whether uos is set or not
            default_uom = product_obj.uom_id and product_obj.uom_id.id
            q = product_uom_obj._compute_qty(cr, uid, uom, qty, default_uom)
            if product_obj.uos_id:
                result['product_uos'] = product_obj.uos_id.id
                result['product_uos_qty'] = qty * product_obj.uos_coeff
            else:
                result['product_uos'] = False
                result['product_uos_qty'] = qty
            result['th_weight'] = q * product_obj.weight        # Round the quantity up

        if not uom2:
            uom2 = product_obj.uom_id
        # get unit price

        if not pricelist:
            warn_msg = _('You have to select a pricelist or a customer in the sales form !\n'
                    'Please set one before choosing a product.')
            warning_msgs += _("No Pricelist ! : ") + warn_msg +"\n\n"
        else:
            price = self.pool.get('product.pricelist').price_get(cr, uid, [pricelist],
                    product, qty or 1.0, partner_id, {
                        'uom': uom or result.get('product_uom'),
                        'date': date_order,
                        })[pricelist]
            if price is False:
                warn_msg = _("Cannot find a pricelist line matching this product and quantity.\n"
                        "You have to change either the product, the quantity or the pricelist.")

                warning_msgs += _("No valid pricelist line found ! :") + warn_msg +"\n\n"
            else:
                result.update({'price_unit': price})
        if warning_msgs:
            warning = {
                       'title': _('Configuration Error!'),
                       'message' : warning_msgs
                    }
        return {'value': result, 'domain': domain, 'warning': warning}

    def product_uom_change(self, cursor, user, ids, pricelist, product, qty=0,
            uom=False, qty_uos=0, uos=False, name='', partner_id=False,
            lang=False, update_tax=True, date_order=False, context=None):
        context = context or {}
        lang = lang or ('lang' in context and context['lang'])
        if not uom:
            return {'value': {'price_unit': 0.0, 'product_uom' : uom or False}}
        return self.product_id_change(cursor, user, ids, pricelist, product,
                qty=qty, uom=uom, qty_uos=qty_uos, uos=uos, name=name,
                partner_id=partner_id, lang=lang, update_tax=update_tax,
                date_order=date_order, context=context)

    def unlink(self, cr, uid, ids, context=None):
        if context is None:
            context = {}
        """Allows to delete sales order lines in draft,cancel states"""
        for rec in self.browse(cr, uid, ids, context=context):
            if rec.state not in ['draft', 'cancel']:
                raise osv.except_osv(_('Invalid Action!'), _('Cannot delete a sales order line which is in state \'%s\'.') %(rec.state,))
        return super(sale_order_line, self).unlink(cr, uid, ids, context=context)


class mail_compose_message(osv.Model):
    _inherit = 'mail.compose.message'

    def send_mail(self, cr, uid, ids, context=None):
        context = context or {}
        if context.get('default_model') == 'sale.order' and context.get('default_res_id') and context.get('mark_so_as_sent'):
            context = dict(context, mail_post_autofollow=True)
            self.pool.get('sale.order').signal_workflow(cr, uid, [context['default_res_id']], 'quotation_sent')
        return super(mail_compose_message, self).send_mail(cr, uid, ids, context=context)


class account_invoice(osv.Model):
    _inherit = 'account.invoice'

    def _get_default_section_id(self, cr, uid, context=None):
        """ Gives default section by checking if present in the context """
        section_id = self._resolve_section_id_from_context(cr, uid, context=context) or False
        if not section_id:
            section_id = self.pool.get('res.users').browse(cr, uid, uid, context).default_section_id.id or False
        return section_id

    def _resolve_section_id_from_context(self, cr, uid, context=None):
        """ Returns ID of section based on the value of 'section_id'
            context key, or None if it cannot be resolved to a single
            Sales Team.
        """
        if context is None:
            context = {}
        if type(context.get('default_section_id')) in (int, long):
            return context.get('default_section_id')
        if isinstance(context.get('default_section_id'), basestring):
            section_ids = self.pool.get('crm.case.section').name_search(cr, uid, name=context['default_section_id'], context=context)
            if len(section_ids) == 1:
                return int(section_ids[0][0])
        return None

    _columns = {
        'section_id': fields.many2one('crm.case.section', 'Sales Team'),
    }

    _defaults = {
        'section_id': lambda self, cr, uid, c=None: self._get_default_section_id(cr, uid, context=c)
    }

    def confirm_paid(self, cr, uid, ids, context=None):
        sale_order_obj = self.pool.get('sale.order')
        res = super(account_invoice, self).confirm_paid(cr, uid, ids, context=context)
        so_ids = sale_order_obj.search(cr, uid, [('invoice_ids', 'in', ids)], context=context)
        for so_id in so_ids:
            sale_order_obj.message_post(cr, uid, so_id, body=_("Invoice paid"), context=context)
        return res

    def unlink(self, cr, uid, ids, context=None):
        """ Overwrite unlink method of account invoice to send a trigger to the sale workflow upon invoice deletion """
        invoice_ids = self.search(cr, uid, [('id', 'in', ids), ('state', 'in', ['draft', 'cancel'])], context=context)
        #if we can't cancel all invoices, do nothing
        if len(invoice_ids) == len(ids):
            #Cancel invoice(s) first before deleting them so that if any sale order is associated with them
            #it will trigger the workflow to put the sale order in an 'invoice exception' state
            for id in ids:
                workflow.trg_validate(uid, 'account.invoice', id, 'invoice_cancel', cr)
        return super(account_invoice, self).unlink(cr, uid, ids, context=context)


class procurement_order(osv.osv):
    _inherit = 'procurement.order'
    _columns = {
        'sale_line_id': fields.many2one('sale.order.line', string='Sale Order Line'),
    }

    def write(self, cr, uid, ids, vals, context=None):
        if isinstance(ids, (int, long)):
            ids = [ids]
        res = super(procurement_order, self).write(cr, uid, ids, vals, context=context)
        from openerp import workflow
        if vals.get('state') in ['done', 'cancel', 'exception']:
            for proc in self.browse(cr, uid, ids, context=context):
                if proc.sale_line_id and proc.sale_line_id.order_id:
                    order_id = proc.sale_line_id.order_id.id
                    if self.pool.get('sale.order').test_procurements_done(cr, uid, [order_id], context=context):
                        workflow.trg_validate(uid, 'sale.order', order_id, 'ship_end', cr)
                    if self.pool.get('sale.order').test_procurements_except(cr, uid, [order_id], context=context):
                        workflow.trg_validate(uid, 'sale.order', order_id, 'ship_except', cr)
        return res

class product_product(osv.Model):
    _inherit = 'product.product'

    def _sales_count(self, cr, uid, ids, field_name, arg, context=None):
        SaleOrderLine = self.pool['sale.order.line']
        return {
            product_id: SaleOrderLine.search_count(cr,uid, [('product_id', '=', product_id)], context=context)
            for product_id in ids
        }

    _columns = {
        'sales_count': fields.function(_sales_count, string='# Sales', type='integer'),

    }

class product_template(osv.Model):
    _inherit = 'product.template'

    def _sales_count(self, cr, uid, ids, field_name, arg, context=None):
        res = dict.fromkeys(ids, 0)
        for template in self.browse(cr, uid, ids, context=context):
            res[template.id] = sum([p.sales_count for p in template.product_variant_ids])
        return res
    
    def action_view_sales(self, cr, uid, ids, context=None):
        act_obj = self.pool.get('ir.actions.act_window')
        mod_obj = self.pool.get('ir.model.data')
        product_ids = []
        for template in self.browse(cr, uid, ids, context=context):
            product_ids += [x.id for x in template.product_variant_ids]
        result = mod_obj.xmlid_to_res_id(cr, uid, 'sale.action_order_line_product_tree',raise_if_not_found=True)
        result = act_obj.read(cr, uid, [result], context=context)[0]
        result['domain'] = "[('product_id','in',[" + ','.join(map(str, product_ids)) + "])]"
        return result
    
    
    _columns = {
        'sales_count': fields.function(_sales_count, string='# Sales', type='integer'),

    }

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