# -*- encoding: utf-8 -*-
##############################################################################
#
#    Copyright (C) 2015 ICTSTUDIO (<http://www.ictstudio.eu>).
#
#    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
import logging

_logger = logging.getLogger(__name__)


class SisStockTransfer(models.Model):
    _name = 'sis.stock.transfer'
    _inherit = ['mail.thread', 'ir.needaction_mixin']

    @api.model
    def _get_default_name(self):
        return self.env['ir.sequence'].get('sis.stock.transfer')

    @api.model
    def _get_default_date(self):
        return fields.Date.context_today(self)

    @api.model
    def _get_default_state(self):
        return 'draft'

    @api.multi
    @api.depends('pickings.state')
    def _calc_transfer_state(self):
        for rec in self:
            if rec.pickings:
                picking_states = [p.state for p in rec.pickings]
                if 'done' in picking_states:
                    rec.state = 'done'
            else:
                rec.state = 'draft'
    @api.model
    def _get_default_source_warehouse(self):
        warehouse = self.env['stock.warehouse'].search([('user_id','=',self.env.user.id)])
        if warehouse:
            return warehouse[0].id

    @api.model
    def _get_default_dest_warehouse(self):
        if (self._context.get('type') == 'appointment'):
            warehouse = self.env['stock.warehouse'].search([('name','ilike','Cliente')])
            if warehouse:
                return warehouse[0].id
            else:
                raise Warning(_("No existe un almacén asignado para clientes"))

    name = fields.Char(string='Referencia')
    date = fields.Date(string='Fecha',default=_get_default_date)
    partner_id = fields.Many2one('res.partner', string="Paciente")
    doctor_id = fields.Many2one('res.users', string="Doctor", default=lambda self: self.env.user.id)
    appointment_reason = fields.Char('Motivo')
    source_warehouse = fields.Many2one(comodel_name='stock.warehouse',string='Déposito de Origen', default=_get_default_source_warehouse)
    dest_warehouse = fields.Many2one(comodel_name='stock.warehouse',string='Déposito de Destino', default=_get_default_dest_warehouse)
    state = fields.Selection(
            selection=[
                ('draft', 'Borrador'),
                ('done', 'Hecho')],
            string='Estado',
            default=_get_default_state,
            store=True,
            compute=_calc_transfer_state)
    lines = fields.One2many(comodel_name='sis.stock.transfer.line',inverse_name='transfer',string='Lineas de Transferencia')
    pickings = fields.One2many(comodel_name='stock.picking',inverse_name='transfer',string='Transferencia Relacionada')
    company_id = fields.Many2one(comodel_name='res.company', string='Compania', required=True,default=lambda self: self.env['res.company']._company_default_get('sis.stock.transfer'))
    note = fields.Char('Observación')
    type = fields.Selection([
                ('transfer', 'Transferencia'),
                ('appointment', 'Consulta')],
            string='Tipo', store=True)

    @api.model
    def create(self, vals):
        vals['type'] = self._context.get('type')
        if (self._context.get('type') == 'transfer'):
            vals['name'] = self.env['ir.sequence'].get('sis.stock.transfer') or '/'
        else:
            vals['name'] = self.env['ir.sequence'].get('sis.stock.appointment') or '/'
        return super(SisStockTransfer, self).create(vals)

    @api.one
    @api.onchange('doctor_id')
    def onchange_doctor_id(self):
        if self.doctor_id:
            warehouse = self.env['stock.warehouse'].search([('user_id','=',self.doctor_id.id)])
            if warehouse:
                self.source_warehouse = warehouse.id
            else:
                raise Warning(_("El Doctor seleccionado no posee almacén asignado"))

    def get_transfer_picking_type(self):
        self.ensure_one()

        picking_types = self.env['stock.picking.type'].search([('default_location_src_id', '=', self.source_warehouse.lot_stock_id.id),('code', '=', 'outgoing')])

        if not picking_types:
            _logger.error("No picking tye found")
            #TODO: Exception Raise

        return picking_types and picking_types[0]

    @api.multi
    def get_picking_vals(self):
        self.ensure_one()
        picking_type = self.get_transfer_picking_type()
        picking_vals = {
            'picking_type_id' : picking_type.id,
            'transfer' : self.id,
            'origin': self.name
        }

        return picking_vals

    @api.multi
    def action_create_picking(self):
        for rec in self:
            picking_vals = rec.get_picking_vals()
            _logger.debug("Picking Vals: %s", picking_vals)
            picking = rec.pickings.create(picking_vals)
            if not picking:
                _logger.error("Error Creating Picking")
                #TODO: Add  Exception

            pc_group = rec._get_procurement_group()

            for line in rec.lines:
                move_vals = line.get_move_vals(picking, pc_group)
                if move_vals:
                    _logger.debug("Move Vals: %s", move_vals)
                    move_id = self.env['stock.move'].create(move_vals)
                    move_id.action_done()

    @api.model
    def _prepare_procurement_group(self):
        return {'name': self.name}

    @api.model
    def _get_procurement_group(self):
        pc_groups = self.env['procurement.group'].search(
                [
                    ('name', '=', self.name)
                ]
        )
        if pc_groups:
            pc_group = pc_groups[0]
        else:
            pc_vals = self._prepare_procurement_group()
            pc_group = self.env['procurement.group'].create(pc_vals)
        return pc_group or False