# -*- coding: utf-8 -*-
##############################################################################
#
#    datenpol gmbh
#    Copyright (C) 2013-TODAY datenpol gmbh (<http://www.datenpol.at/>)
#
#    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 odoo import api, fields, models, _
from odoo.exceptions import UserError


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

    intrastat_id = fields.Many2one(comodel_name='report.intrastat.code', string='Intrastat Code')
    lot_id = fields.Many2one(comodel_name='stock.production.lot', string='Lot')
    weight = fields.Float(string='Gewicht', compute='_compute_weight')

    @api.model
    def create(self, vals):
        if vals.get('intrastat_id', None) is None:
            if vals.get('lot_id', False):
                vals.update(intrastat_id=self.env['stock.production.lot'].browse(vals['lot_id']).intrastat_id.id)
            elif vals.get('product_id', False):
                vals.update(intrastat_id=self.env['product.template'].browse(vals['product_id']).intrastat_id.id)
        return super(AccountInvoiceLine, self).create(vals)

    @api.multi
    def action_show_lot(self):
        self.ensure_one()
        action = self.env.ref('stock.action_production_lot_form').read()[0]
        action['res_id'] = self.lot_id.id
        action['view_mode'] = 'form'
        action['views'] = [(False, 'form')]

        return action

    def _compute_weight(self):
        for record in self:
            record.weight = record.lot_id.weight or record.product_id.weight

    def write(self, vals):
        res = super(AccountInvoiceLine, self).write(vals)
        if vals.get('intrastat_id', False) and vals.get('lot_id', False):
            self.env['stock.production.lot'].browse([vals.get('lot_id', False)]).write({
                'intrastat_id': vals.get('intrastat_id')
            })
        elif vals.get('intrastat_id', False) and not vals.get('lot_id', False):
            raise UserError(_('Der Intrastrat Code kann nur gesetzt werden wenn ein Lot angegeben wurde.'))
        return res


class AccountPaymentTerm(models.Model):
    _inherit = 'account.payment.term'

    code = fields.Char(string='Code')


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

    positions = fields.Integer(string='Positionen', compute='_compute_positions')
    num_items = fields.Integer(string='Anzahl der Artikel', compute='_compute_num_items')
    weight_total = fields.Float(string='Gesamtgewicht', compute='_compute_weight_total')

    @api.multi
    def _compute_weight_total(self):
        for record in self:
            _sum = 0
            for line in record.invoice_line_ids:
                _sum += line.weight * line.quantity
            record.weight_total = _sum

    @api.multi
    def _compute_positions(self):
        for record in self:
            record.positions = len(record.invoice_line_ids)

    @api.multi
    def _compute_num_items(self):
        for record in self:
            num_items = 0
            for line in record.invoice_line_ids:
                if line.uom_id == self.env.ref('product.product_uom_unit'):  # wenn die Mengeneinheit Stk. ist
                    num_items += line.quantity
            record.num_items = num_items

    @api.multi
    def invoice_print(self):
        self.ensure_one()
        self.sent = True
        return self.env.ref('account.account_invoices_without_payment').report_action(self)

    @api.model
    def _formatLang(self, value, currency=True):
        lang = self.partner_id.lang
        lang_objs = self.env['res.lang'].search([('code', '=', lang)])
        if not lang_objs:
            lang_objs = self.env['res.lang'].search([], limit=1)
        lang_obj = lang_objs[0]

        res = lang_obj.format('%.' + str(2) + 'f', value, grouping=True, monetary=True)
        currency_obj = self.currency_id

        if currency_obj and currency_obj.symbol and currency:
            if currency_obj.position == 'after':
                res = '%s %s' % (res, currency_obj.symbol)
            elif currency_obj and currency_obj.position == 'before':
                res = '%s %s' % (currency_obj.symbol, res)
        return res