# -*- encoding: utf-8 -*-
##############################################################################
#
#    Author: Nicolas Bessi. Copyright Camptocamp SA
#    Donors: Hasa Sàrl, Open Net Sàrl and Prisme Solutions Informatique 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/>.
#
##############################################################################
import base64
import time
import re

from tools.translate import _
from osv import osv, fields
from tools import mod10r
import pooler

def _reconstruct_invoice_ref(cursor, user, reference, context=None):
    ###
    id_invoice = False
    # On fait d'abord une recherche sur toutes les factures
    # we now search for an invoice
    user_obj = pooler.get_pool(cursor.dbname).get('res.users')
    user_current=user_obj.browse(cursor, user, user)

    ##
    cursor.execute("SELECT inv.id,inv.number from account_invoice "
                   "AS inv where inv.company_id = %s and type='out_invoice'",
                   (user_current.company_id.id,))
    result_invoice = cursor.fetchall()
    REF = re.compile('[^0-9]')
    for inv_id,inv_name in result_invoice:
        inv_name =  REF.sub('0', str(inv_name))
        if inv_name == reference:
            id_invoice = inv_id
            break
    if  id_invoice:
        cursor.execute('SELECT l.id ' \
                    'FROM account_move_line l, account_invoice i ' \
                    'WHERE l.move_id = i.move_id AND l.reconcile_id is NULL  ' \
                        'AND i.id IN %s',(tuple([id_invoice]),))
        inv_line = []
        for id_line in cursor.fetchall():
            inv_line.append(id_line[0])
        return inv_line
    else:
        return []
    return True

def _import(self, cursor, user, data, context=None):

    statement_line_obj = self.pool.get('account.bank.statement.line')
    voucher_obj = self.pool.get('account.voucher')
    voucher_line_obj = self.pool.get('account.voucher.line')
    move_line_obj = self.pool.get('account.move.line')
    property_obj = self.pool.get('ir.property')
    model_fields_obj = self.pool.get('ir.model.fields')
    attachment_obj = self.pool.get('ir.attachment')
    statement_obj = self.pool.get('account.bank.statement')
    property_obj = self.pool.get('ir.property')
    file = data['form']['file']
    if not file: 
        raise osv.except_osv(_('UserError'),
                             _('Please select a file first!'))
    statement_id = data['id']
    records = []
    total_amount = 0
    total_cost = 0
    find_total = False

    if context is None:
        context = {}
    for lines in base64.decodestring(file).split("\n"):
        # Manage files without carriage return
        while lines:
            (line, lines) = (lines[:128], lines[128:])
            record = {}

            if line[0:3] in ('999', '995'):
                if find_total:
                    raise osv.except_osv(_('Error'),
                            _('Too much total record found!'))
                find_total = True
                if lines:
                    raise osv.except_osv(_('Error'),
                            _('Record found after total record!'))
                amount = float(line[39:49]) + (float(line[49:51]) / 100)
                cost = float(line[69:76]) + (float(line[76:78]) / 100)
                if line[2] == '5':
                    amount *= -1
                    cost *= -1

                if round(amount - total_amount, 2) >= 0.01 \
                        or round(cost - total_cost, 2) >= 0.01:
                    raise osv.except_osv(_('Error'),
                            _('Total record different from the computed!'))
                if int(line[51:63]) != len(records):
                    raise osv.except_osv(_('Error'),
                            _('Number record different from the computed!'))
            else:
                record = {
                    'reference': line[12:39],
                    'amount': float(line[39:47]) + (float(line[47:49]) / 100),
                    'date': time.strftime('%Y-%m-%d',
                        time.strptime(line[65:71], '%y%m%d')),
                    'cost': float(line[96:98]) + (float(line[98:100]) / 100),
                }

                if record['reference'] != mod10r(record['reference'][:-1]):
                    raise osv.except_osv(_('Error'),
                            _('Recursive mod10 is invalid for reference: %s') % \
                                    record['reference'])

                if line[2] == '5':
                    record['amount'] *= -1
                    record['cost'] *= -1
                total_amount += record['amount']
                total_cost += record['cost']
                records.append(record)

    account_receivable = False
    account_payable = False
    statement = statement_obj.browse(cursor, user, statement_id, context=context)

    for record in records:
        # Remove the 11 first char because it can be adherent number
        # TODO check if 11 is the right number
        reference = record['reference'][11:-1].lstrip('0')
        values = {
            'name': 'IN '+ reference,
            'date': record['date'],
            'amount': record['amount'],
            'ref': reference,
            'type': (record['amount'] >= 0 and 'customer') or 'supplier',
            'statement_id': statement_id,
        }

        line_ids = move_line_obj.search(cursor, user, [
            ('ref', 'like', reference),
            ('reconcile_id', '=', False),
            ('account_id.type', 'in', ['receivable', 'payable']),
            ], order='date desc', context=context)
        if not line_ids:
            line_ids = _reconstruct_invoice_ref(cursor, user, reference, None)
        partner_id = False
        account_id = False
        for line in move_line_obj.browse(cursor, user, line_ids, context=context):
            account_receivable = line.partner_id.property_account_receivable.id
            account_payable = line.partner_id.property_account_payable.id
            partner_id = line.partner_id.id
            move_id = line.move_id.id
            if record['amount'] >= 0:
                if round(record['amount'] - line.debit, 2) < 0.01:
#                    line2reconcile = line.id
                    account_id = line.account_id.id
                    break
            else:
                if round(line.credit + record['amount'], 2) < 0.01:
#                    line2reconcile = line.id
                    account_id = line.account_id.id
                    break
        result = voucher_obj.onchange_partner_id(cursor, user, [], partner_id, journal_id=statement.journal_id.id, amount=abs(record['amount']), currency_id= statement.currency.id, ttype='receipt', date=statement.date ,context=context)
        voucher_res = { 'type': 'receipt' ,

             'name': values['name'],
             'partner_id': partner_id,
             'journal_id': statement.journal_id.id,
             'account_id': result.get('account_id', statement.journal_id.default_credit_account_id.id),
             'company_id': statement.company_id.id,
             'currency_id': statement.currency.id,
             'date': record['date'] or time.strftime('%Y-%m-%d'),
             'amount': abs(record['amount']),
            'period_id': statement.period_id.id
             }
        voucher_id = voucher_obj.create(cursor, user, voucher_res, context=context)
        context.update({'move_line_ids': line_ids})
        values['voucher_id'] = voucher_id
        voucher_line_dict =  False
        if result['value']['line_ids']:
             for line_dict in result['value']['line_ids']:
                 move_line = move_line_obj.browse(cursor, user, line_dict['move_line_id'], context)
                 if move_id == move_line.move_id.id:
                     voucher_line_dict = line_dict
        if voucher_line_dict:
             voucher_line_dict.update({'voucher_id':voucher_id})
             voucher_line_obj.create(cursor, user, voucher_line_dict, context=context)

        if not account_id:
            if record['amount'] >= 0:
                account_id = account_receivable
            else:
                account_id = account_payable
        ##If line not linked to an invoice we create a line not linked to a voucher
        if not account_id and not line_ids:
            name = "property_account_receivable"
            if record['amount'] < 0:
                name = "property_account_payable"
            prop = property_obj.search(
                        cursor,
                        user,
                        [
                            ('name','=',name),
                            ('company_id','=',statement.company_id.id),
                            ('res_id', '=', False)
                        ]
            )
            if prop:
                value = property_obj.read(cursor, user, prop[0], ['value_reference']).get('value_reference', False)
                if value :
                    account_id = int(value.split(',')[1])
            else :
                raise osv.except_osv(_('Error'),
                    _('The properties account payable account receivable are not set'))
        if not account_id and line_ids:
            raise osv.except_osv(_('Error'),
                _('The properties account payable account receivable are not set'))
        values['account_id'] = account_id
        values['partner_id'] = partner_id
        statement_line_obj.create(cursor, user, values, context=context)
    attachment_obj.create(cursor, user, {
        'name': 'BVR %s'%time.strftime("%Y-%m-%d_%H:%M:%S", time.gmtime()),
        'datas': file,
        'datas_fname': 'BVR %s.txt'%time.strftime("%Y-%m-%d_%H:%M:%S", time.gmtime()),
        'res_model': 'account.bank.statement',
        'res_id': statement_id,
        }, context=context)

    return {}

class bvr_import_wizard(osv.osv_memory):
    _name = 'bvr.import.wizard'
    _columns = {
        'file':fields.binary('BVR File')
    }

    def import_bvr(self, cr, uid, ids, context=None):
        data = {}
        if context is None:
            context = {}
        active_ids = context.get('active_ids', [])
        active_id = context.get('active_id', False)
        data['form'] = {}
        data['ids'] = active_ids
        data['id'] = active_id
        data['form']['file'] = ''
        res = self.read(cr, uid, ids[0], ['file'])
        if res:
            data['form']['file'] = res['file']
        _import(self, cr, uid, data, context=context)
        return {}

bvr_import_wizard()

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