##############################################################################
#
# Copyright (c) 2006 TINY SPRL. (http://tiny.be) All Rights Reserved.
#                    Fabien Pinckaers <fp@tiny.Be>
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# This program is Free Software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#
##############################################################################

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_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()