eiru_purchases/controllers/helpers/account_invoice.py

# -*- coding: utf-8 -*-
from openerp.http import request as r
from openerp.tools import DEFAULT_SERVER_DATE_FORMAT
from dateutil.parser import parse
from dateutil.relativedelta import relativedelta as rd


def create_invoice(supplier_id, cart_items, currency_id, payment_term_id=None, supplier_invoice_number=None):
    partner = r.env['res.partner'].browse(supplier_id)
    journal = r.env['account.journal'].search([('type', 'in', ['purchase']), ('company_id', '=', partner.company_id.id)])

    values = {
        'name': '/',
        'partner_id': partner.id,
        'invoice_line': [[0, False, {
            'name': line.get('name'),
            'product_id': int(line.get('id')),
            'quantity': float(line.get('quantity')),
            'price_unit': float(line.get('price'))
        }] for line in cart_items],
        'account_id': partner.property_account_payable.id,
        'journal_id': journal.id,
        'currency_id': currency_id,
        'payment_term': payment_term_id,
        'supplier_invoice_number': supplier_invoice_number,
        'type': 'in_invoice'
    }

    return r.env['account.invoice'].create(values)


def prepare_invoice(invoice_ids, currency_id, date_today):
    assert len(invoice_ids) == 1

    invoice = r.env['account.invoice'].browse(invoice_ids)
    
    date_due = parse(date_today) + rd(days=max(invoice.payment_term.line_ids.mapped(lambda x: x.days + x.days2)))

    invoice.write({
        'currency_id': currency_id,
        'date_invoice': date_today,
        'date_due': date_due.strftime(DEFAULT_SERVER_DATE_FORMAT),
        'state': 'open'
    })


def validate_invoice(invoice_ids, type=None):
    assert len(invoice_ids) == 1

    invoice = r.env['account.invoice'].browse(invoice_ids)

    invoice.action_number()
    invoice.invoice_validate()

    if type == 'expense':
        name = 'GASTO' + invoice.name[invoice.name.index('/'):]
        invoice.write({
            'number': name,
            'internal_number': name
        })


def close_invoice(invoice_ids):
    assert len(invoice_ids) == 1

    invoice = r.env['account.invoice'].browse(invoice_ids)

    if invoice.residual == 0:
        invoice.write({
            'state': 'paid'
        })