# -*- 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 osv import osv, fields

class stock_move(osv.osv):
    _inherit = 'stock.move'
    _columns = {
        'purchase_line_id': fields.many2one('purchase.order.line',
            'Purchase Order Line', ondelete='set null', select=True,
            readonly=True),
    }
    _defaults = {
        'purchase_line_id': lambda *a:False
    }
stock_move()

#
# Inherit of picking to add the link to the PO
#
class stock_picking(osv.osv):
    _inherit = 'stock.picking'
    _columns = {
        'purchase_id': fields.many2one('purchase.order', 'Purchase Order',
            ondelete='set null', select=True, readonly=True),
    }
    _defaults = {
        'purchase_id': lambda *a: False,
    }

    def get_currency_id(self, cursor, user, picking):
        if picking.purchase_id:
            return picking.purchase_id.pricelist_id.currency_id.id
        else:
            return super(stock_picking, self).get_currency_id(cursor, user, picking)

    def _get_comment_invoice(self, cursor, user, picking):
        if picking.purchase_id and picking.purchase_id.notes:
            if picking.note:
                return picking.note + '\n' + picking.purchase_id.notes
            else:
                return picking.purchase_id.notes
        return super(stock_picking, self)._get_comment_invoice(cursor, user,
                picking)

    def _get_price_unit_invoice(self, cursor, user, move_line, type):
        if move_line.purchase_line_id:
            return move_line.purchase_line_id.price_unit
        return super(stock_picking, self)._get_price_unit_invoice(cursor,
                user, move_line, type)

    def _get_discount_invoice(self, cursor, user, move_line):
        if move_line.purchase_line_id:
            return 0.0
        return super(stock_picking, self)._get_discount_invoice(cursor, user,
                move_line)

    def _get_taxes_invoice(self, cursor, user, move_line, type):
        if move_line.purchase_line_id:
            return [x.id for x in move_line.purchase_line_id.taxes_id]
        return super(stock_picking, self)._get_taxes_invoice(cursor, user,
                move_line, type)

    def _get_account_analytic_invoice(self, cursor, user, picking, move_line):
        if move_line.purchase_line_id:
            return move_line.purchase_line_id.account_analytic_id.id
        return super(stock_picking, self)._get_account_analytic_invoice(cursor,
                user, picking, move_line)

    def _invoice_line_hook(self, cursor, user, move_line, invoice_line_id):
        return super(stock_picking, self)._invoice_line_hook(cursor, user,
                move_line, invoice_line_id)

    def _invoice_hook(self, cursor, user, picking, invoice_id):
        purchase_obj = self.pool.get('purchase.order')
        if picking.purchase_id:
            purchase_obj.write(cursor, user, [picking.purchase_id.id], {'invoice_id': invoice_id,
                })
        return super(stock_picking, self)._invoice_hook(cursor, user,
                picking, invoice_id)

stock_picking()

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