# -*- encoding: utf-8 -*-
##############################################################################
#
#    Account Usability module for Odoo
#    Copyright (C) 2015 Akretion (http://www.akretion.com)
#    @author Alexis de Lattre <alexis.delattre@akretion.com>
#
#    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 import models, fields, api, _
from openerp.exceptions import Warning as UserError


class AccountInvoice(models.Model):
    _inherit = 'account.invoice'

    origin = fields.Char(track_visibility='onchange')
    supplier_invoice_number = fields.Char(track_visibility='onchange')
    internal_number = fields.Char(track_visibility='onchange')
    reference = fields.Char(track_visibility='onchange')
    sent = fields.Boolean(track_visibility='onchange')
    date_invoice = fields.Date(track_visibility='onchange')
    date_due = fields.Date(track_visibility='onchange')
    payment_term = fields.Many2one(track_visibility='onchange')
    period_id = fields.Many2one(track_visibility='onchange')
    account_id = fields.Many2one(track_visibility='onchange')
    journal_id = fields.Many2one(track_visibility='onchange')
    partner_bank_id = fields.Many2one(track_visibility='onchange')
    fiscal_position = fields.Many2one(track_visibility='onchange')


class AccountMove(models.Model):
    _inherit = 'account.move'

    @api.onchange('date')
    def date_onchange(self):
        if self.date:
            self.period_id = self.env['account.period'].find(self.date)


class AccountMoveLine(models.Model):
    _inherit = 'account.move.line'

    @api.onchange('credit')
    def _credit_onchange(self):
        if self.credit and self.debit:
            self.debit = 0

    @api.onchange('debit')
    def _debit_onchange(self):
        if self.debit and self.credit:
            self.credit = 0


class AccountBankStatementLine(models.Model):
    _inherit = 'account.bank.statement.line'

    # Disable guessing for reconciliation
    # because my experience with several customers shows that it is a problem
    # in the following scenario : move line 'x' has been "guessed" by OpenERP
    # to be reconciled with a statement line 'Y' at the end of the bank
    # statement, but it is a mistake because it should be reconciled with
    # statement line 'B' at the beginning of the bank statement
    # When the user is on statement line 'B', he tries to select
    # move line 'x', but it can't find it... because it is already "reserved"
    # by the guess of OpenERP for statement line 'Y' ! To solve this problem,
    # the user must go to statement line 'Y' and unselect move line 'x'
    # and then come back on statement line 'B' and select move line 'A'...
    # but non super-expert users can't do that because it is impossible to
    # figure out that the fact that the user can't find move line 'x'
    # is caused by this.
    # Set search_reconciliation_proposition to False by default
    def get_data_for_reconciliations(
            self, cr, uid, ids, excluded_ids=None,
            search_reconciliation_proposition=False, context=None):
        # Make variable name shorted for PEP8 !
        search_rec_prop = search_reconciliation_proposition
        return super(AccountBankStatementLine, self).\
            get_data_for_reconciliations(
                cr, uid, ids, excluded_ids=excluded_ids,
                search_reconciliation_proposition=search_rec_prop,
                context=context)


class ResPartner(models.Model):
    _inherit = 'res.partner'

    @api.multi
    def show_partner_receivable_or_payable_account(self):
        self.ensure_one()
        if self.customer and not self.supplier:
            account_id = self.property_account_receivable.id
        elif self.supplier and not self.customer:
            account_id = self.property_account_payable.id
        else:
            raise UserError(_(
                'This shortcut only works for partners that are only '
                'customer or only supplier'))
        action = self.env['ir.actions.act_window'].for_xml_id(
            'account', 'action_account_moves_all_tree')
        action['context'] = {
            'search_default_partner_id': [self.ids[0]],
            'default_partner_id': self.ids[0],
            'search_default_account_id': account_id,
            }
        return action

    @api.multi
    def _compute_journal_item_count(self):
        amlo = self.env['account.move.line']
        for partner in self:
            partner.journal_item_count = amlo.search_count([
                ('partner_id', '=', partner.id),
                ('account_id', 'in', (
                    partner.property_account_receivable.id,
                    partner.property_account_payable.id))])

    journal_item_count = fields.Integer(
        compute='_compute_journal_item_count',
        string="Journal Items", readonly=True)