~camptocamp/account-invoicing/correct_payment_term_balance_mdh

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# -*- coding: utf-8 -*-
##############################################################################
#
#    Author: Joël Grand-Guillaume
#    Copyright 2010 Camptocamp SA
#
#    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 openerp.osv import orm, fields, osv
from tools.translate import _
import netsvc

class AccountInvoice(orm.Model):
    _inherit = "account.invoice"

    def action_to_valid(self, cr, uid, ids):
        """Check if analytic account of each lines is not closed"""
        inv_ids = isinstance(ids, list) and ids[:] or [ids]
        str_error_lines = ""
        errors = False
        for inv in self.browse(cr, uid, inv_ids):
           for line in inv.invoice_line:
              if line.account_analytic_id and line.account_analytic_id.state in ['close', 'cancelled']:
                  str_error_lines += "\n- %s" %(line.name)
                  errors = True
           if errors:
              raise osv.except_osv(_('UserError'),
                                   _("You are trying to validate invoice lines linked to a closed or cancelled Analytic Account."
                                     "\n\nCheck the following lines:")
                                     + str_error_lines)

        self.write(cr, uid, inv_ids, {'state': 'to_valid'})
        return True

    _columns = {
        'state': fields.selection([
                ('draft','Draft'),
                ('to_send','To Send'),
                ('to_valid','To Validate'),
                ('proforma2','Pro-forma'),
                ('open','Open'),
                ('paid','Paid'),
                ('cancel','Canceled')],'State', select=True, readonly=True),
        }


class AccountInvoiceRefund(orm.TransientModel):
    _inherit = "account.invoice.refund"

    def compute_refund(self, cr, uid, ids, mode='refund', context=None):
        """
        @param cr: the current row, from the database cursor,
        @param uid: the current user’s ID for security checks,
        @param ids: the account invoice refund’s ID or list of IDs

        """
        inv_obj = self.pool.get('account.invoice')
        reconcile_obj = self.pool.get('account.move.reconcile')
        account_m_line_obj = self.pool.get('account.move.line')
        mod_obj = self.pool.get('ir.model.data')
        act_obj = self.pool.get('ir.actions.act_window')
        wf_service = netsvc.LocalService('workflow')
        inv_tax_obj = self.pool.get('account.invoice.tax')
        inv_line_obj = self.pool.get('account.invoice.line')
        res_users_obj = self.pool.get('res.users')
        if context is None:
            context = {}

        for form in  self.read(cr, uid, ids, context=context):
            created_inv = []
            date = False
            period = False
            description = False
            journal_id = False
            company = res_users_obj.browse(cr, uid, uid, context=context).company_id
            if form.get('journal_id', False):
                journal_id = form['journal_id'][0]

            for inv in inv_obj.browse(cr, uid, context.get('active_ids'), context=context):
                if inv.state in ['draft', 'proforma2', 'cancel']:
                    raise osv.except_osv(_('Error !'), _('Can not %s draft/proforma/cancel invoice.') % (mode))
                if inv.reconciled and mode in ('cancel', 'modify'):
                    raise osv.except_osv(_('Error !'), _('Can not %s invoice which is already reconciled, invoice should be unreconciled first. You can only Refund this invoice') % (mode))
                if form.get('period'):
                    period = form['period'][0]
                else:
                    period = inv.period_id and inv.period_id.id or False

                if not journal_id:
                    journal_id = inv.journal_id.id

                if form['date']:
                    date = form['date']
                    if not form['period']:
                            cr.execute("select name from ir_model_fields \
                                            where model = 'account.period' \
                                            and name = 'company_id'")
                            result_query = cr.fetchone()
                            if result_query:
                                cr.execute("""select p.id from account_fiscalyear y, account_period p where y.id=p.fiscalyear_id \
                                    and date(%s) between p.date_start AND p.date_stop and y.company_id = %s limit 1""", (date, company.id,))
                            else:
                                cr.execute("""SELECT id
                                        from account_period where date(%s)
                                        between date_start AND  date_stop  \
                                        limit 1 """, (date,))
                            res = cr.fetchone()
                            if res:
                                period = res[0]
                else:
                    date = inv.date_invoice
                if form['description']:
                    description = form['description']
                else:
                    description = inv.name

                if not period:
                    raise osv.except_osv(_('Data Insufficient !'), \
                                            _('No Period found on Invoice!'))

                refund_id = inv_obj.refund(cr, uid, [inv.id], date, period, description, journal_id)
                refund = inv_obj.browse(cr, uid, refund_id[0], context=context)
                inv_obj.write(cr, uid, [refund.id], {'date_due': date,
                                                'check_total': inv.check_total})
                inv_obj.button_compute(cr, uid, refund_id)

                created_inv.append(refund_id[0])
                if mode in ('cancel', 'modify'):
                    movelines = inv.move_id.line_id
                    to_reconcile_ids = {}
                    for line in movelines:
                        if line.account_id.id == inv.account_id.id:
                            to_reconcile_ids[line.account_id.id] = [line.id]
                        if type(line.reconcile_id) != osv.orm.browse_null:
                            reconcile_obj.unlink(cr, uid, line.reconcile_id.id)
                    ## Specific to c2c need to trigger specific wrkf before create the refund
                    wf_service.trg_validate(uid, 'account.invoice', \
                                        refund.id, 'invoice_to_valid', cr)
                    wf_service.trg_validate(uid, 'account.invoice', \
                                        refund.id, 'invoice_to_send', cr)
                    wf_service.trg_validate(uid, 'account.invoice', \
                                        refund.id, 'invoice_open', cr)
                    ##
                    refund = inv_obj.browse(cr, uid, refund_id[0], context=context)
                    for tmpline in  refund.move_id.line_id:
                        if tmpline.account_id.id == inv.account_id.id:
                            to_reconcile_ids[tmpline.account_id.id].append(tmpline.id)
                    for account in to_reconcile_ids:
                        account_m_line_obj.reconcile(cr, uid, to_reconcile_ids[account],
                                        writeoff_period_id=period,
                                        writeoff_journal_id = inv.journal_id.id,
                                        writeoff_acc_id=inv.account_id.id,
                                        context={'date_p': date})
                    if mode == 'modify':
                        invoice = inv_obj.read(cr, uid, [inv.id],
                                    ['name', 'type', 'number', 'reference',
                                    'comment', 'date_due', 'partner_id',
                                    'address_contact_id', 'address_invoice_id',
                                    'partner_insite', 'partner_contact',
                                    'partner_ref', 'payment_term', 'account_id',
                                    'currency_id', 'invoice_line', 'tax_line',
                                    'journal_id', 'period_id'], context=context)
                        invoice = invoice[0]
                        del invoice['id']
                        invoice_lines = inv_line_obj.read(cr, uid, invoice['invoice_line'], context=context)
                        invoice_lines = inv_obj._refund_cleanup_lines(cr, uid, invoice_lines)
                        tax_lines = inv_tax_obj.read(cr, uid, invoice['tax_line'], context=context)
                        tax_lines = inv_obj._refund_cleanup_lines(cr, uid, tax_lines)
                        invoice.update({
                            'type': inv.type,
                            'date_invoice': date,
                            'state': 'draft',
                            'number': False,
                            'invoice_line': invoice_lines,
                            'tax_line': tax_lines,
                            'period_id': period,
                            'name': description
                        })
                        for field in ('address_contact_id', 'address_invoice_id', 'partner_id',
                                'account_id', 'currency_id', 'payment_term', 'journal_id'):
                                invoice[field] = invoice[field] and invoice[field][0]
                        inv_id = inv_obj.create(cr, uid, invoice, {})
                        if inv.payment_term.id:
                            data = inv_obj.onchange_payment_term_date_invoice(cr, uid, [inv_id], inv.payment_term.id, date)
                            if 'value' in data and data['value']:
                                inv_obj.write(cr, uid, [inv_id], data['value'])
                        created_inv.append(inv_id)
            if inv.type in ('out_invoice', 'out_refund'):
                xml_id = 'action_invoice_tree3'
            else:
                xml_id = 'action_invoice_tree4'
            result = mod_obj.get_object_reference(cr, uid, 'account', xml_id)
            id = result and result[1] or False
            result = act_obj.read(cr, uid, id, context=context)
            invoice_domain = eval(result['domain'])
            invoice_domain.append(('id', 'in', created_inv))
            result['domain'] = invoice_domain
            return result


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