# -*- 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 fields, models, api, tools, _
from odoo.exceptions import ValidationError
from odoo.tools.float_utils import float_compare, float_is_zero
import base64

class StockProductionLot(models.Model):
    _inherit = 'stock.production.lot'

    assembled = fields.Boolean(string='Zusammengebaut')
    notes = fields.Text()
    weight = fields.Float(string='Gewicht')
    intrastat_id = fields.Many2one(comodel_name='report.intrastat.code', string='Intrastat Nummer (Code)')
    image = fields.Binary("Produktbild", attachment=True,
                          help="Wenn vorhanden, wird dieses Bild in den Angeboten/Aufträgen angedruckt")
    image_medium = fields.Binary("Produktbild (resized)", attachment=True,
                                 help="Produktbild 'resized' auf 128x128")
    short_text = fields.Text()

    @api.model
    def create(self, vals):
        if vals.get('image'):
            vals.update(tools.image_get_resized_images(vals['image'], return_big=True, return_medium=True, return_small=False))
        return super(StockProductionLot, self).create(vals)

    @api.multi
    def write(self, vals):
        if vals.get('image'):
            vals.update(tools.image_get_resized_images(vals['image'], return_big=True, return_medium=True, return_small=False))
        return super(StockProductionLot, self).write(vals)


class StockPicking(models.Model):
    _inherit = 'stock.picking'

    dlv_partner_ref = fields.Text(compute='_get_partner_ref', store=False, string='Interne Referenz')
    picking_signature = fields.Binary(string='Customer Signature', default=None)
    shopping_cart_ref = fields.Text(compute='_get_shopping_cart_ref', store=True, string='Warenkorb')
    free_over = fields.Boolean(help="If the order total amount (shipping excluded) is above or equal to this value, the customer benefits from a free shipping \nIf this value = 0, no freight item is added to the order")
    show_to_sign = fields.Text(
        compute='_compute_show_to_sign',
        help='Technical field used to compute whether the to_sign should be shown.')

    @api.multi
    @api.depends('state', 'picking_signature')
    def _compute_show_to_sign(self):
        for picking in self:
            picking.show_to_sign = ''
            if picking.picking_signature == '' or picking.picking_signature == None or len(self['picking_signature']) == 3012:
                picking.show_to_sign = 'btn-primary'

    @api.multi
    def _add_delivery_cost_to_so(self):
        self.ensure_one()
        sale_order = self.sale_id
        if sale_order.invoice_shipping_on_delivery and not (self.carrier_id.free_over and self.carrier_id.amount < 0.001):
            sale_order._create_delivery_line(self.carrier_id, self.carrier_price)


    @api.multi
    def write(self, vals):

        if 'picking_signature' in vals:
            msg = ''
            prime_signature = ""
            if not vals['picking_signature'] or len(vals['picking_signature']) == 3012:
                if self['picking_signature'] or len(self['picking_signature']) == 3012:
                    prime_signature = self['picking_signature']
                    msg='Unterschrift wurde entfernt'
            else:
                if not self['picking_signature'] or len(self['picking_signature']) == 3012:
                    prime_signature = vals['picking_signature']
                    msg='Lieferschein wurde unterschrieben'
                elif vals['picking_signature'] != self['picking_signature'].decode():
                    prime_signature = vals['picking_signature']
                    msg='Unterschrift wurde geändert'

            if msg != '':
#                signature2attach = []
                if isinstance(prime_signature,bytes):
                    ps = prime_signature
                else:
                    ps = prime_signature.encode('ascii')
                signature2attach = {
                    "filename": r'Signature.jpg',
                    "binary" : ps
                }
                self.create_attachment(signature2attach)
                self.message_post(body=msg)

        return super(StockPicking, self).write(vals)

    @api.model
    def create_attachment(self, vals):
        attachment_vals = {
            'name': vals['filename'],
            'datas': vals['binary'],
            'datas_fname': vals['filename'],
            'res_model': self._name,
            'res_id': self.id,
            'customer_signed' : True,
        }
        self.env['ir.attachment'].create(attachment_vals)

    @api.multi
    def _get_partner_ref(self):
        for record in self:
            record.dlv_partner_ref = record.partner_id.ref

    @api.multi
    def _get_shopping_cart_ref(self):
        for record in self:
            record.shopping_cart_ref = record.sale_id.origin

    @api.model
    def _formatLang(self, value):
        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)
        return res


class StockMove(models.Model):
    _inherit = "stock.move"

    manu_lots_visible = fields.Boolean(compute='_compute_manu_lots_visible')

    @api.model
    def create(self, vals):
        res = super(StockMove, self).create(vals)
        for move in res:
            move.update({'sequence': move.sale_line_id.sequence,})
        return res

    @api.multi
    def _prepare_move_line_vals(self, quantity=None, reserved_quant=None):
        self.ensure_one()
        vals = super(StockMove, self)._prepare_move_line_vals(quantity=quantity, reserved_quant=reserved_quant)
        if self.sale_line_id.lot_id and not self.sale_line_id.product_id.can_be_sold_unconfigured:
            move_lot = self.sale_line_id.lot_id.id
            vals.update({'lot_id': move_lot,})
        return vals

    def _compute_manu_lots_visible(self):
        for move_line in self:
            if not move_line.product_id.can_be_sold_unconfigured:
                move_line.manu_lots_visible = True

    @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.move_line_ids.lot_id.id
        action['view_mode'] = 'form'
        action['views'] = [(False, 'form')]

        return action

    @api.depends('product_id', 'product_uom_qty', 'product_uom')
    def _cal_move_weight(self):
        for move in self:
            if move.sale_line_id.lot_id and not move.product_id.can_be_sold_unconfigured:
                move.weight += (move.product_qty * move.sale_line_id.lot_id.weight)
            else:
                move.weight += (move.product_qty * move.product_id.weight)

#        print(move.weight)


class StockQuant(models.Model):
    _inherit = "stock.quant"

    @api.constrains('quantity')
    def check_quantity(self):
        info = ''
        for quant in self:
            if float_compare(quant.quantity, 1, precision_rounding=quant.product_uom_id.rounding) > 0 and quant.lot_id and quant.product_id.tracking == 'serial':
                smls = self.env['stock.move.line'].search([('lot_id', '=', quant.lot_id.id)])
                for sml in smls:
                    sm = self.env['stock.move'].search([('id', '=', sml.move_id.id)])
                    info += '\n %s; %s; %s: %s' % (sm.origin,sm.reference,sm.sequence,quant.lot_id.name)

        if info:
            raise ValidationError(_('A serial number should only be linked to a single product.') + info)