# -*- coding: utf-8 -*-
#############################################################################
#
#    Cybrosys Technologies Pvt. Ltd.
#    Copyright (C) 2018-TODAY Cybrosys Technologies(<https://www.cybrosys.com>).
#    Author: Anusha P P(<https://www.cybrosys.com>)
#    you can modify it under the terms of the GNU LESSER
#    GENERAL PUBLIC LICENSE (LGPL v3), Version 3.

#    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 LESSER GENERAL PUBLIC LICENSE (LGPL v3) for more details.
#
#    You should have received a copy of the GNU LESSER GENERAL PUBLIC LICENSE
#    GENERAL PUBLIC LICENSE (LGPL v3) along with this program.
#    If not, see <https://www.gnu.org/licenses/>.
#
#############################################################################

from dateutil import parser
from odoo import models, fields, api, _
from odoo.exceptions import UserError


class SalePromotion(models.Model):
    _inherit = 'sale.order'

    sale_promotion_id = fields.Many2one('sale.promotion', string="Sale Promotion")

    @api.multi
    def button_dump_sale_promotion(self):

        for order in self:
            if order.sale_promotion_id:
                date_order = parser.parse(order.date_order).strftime('%Y-%m-%d')
                product_list = []
                category_list = []
                for line in order.order_line:
                    count = 0
                    categ_count = 0
                    if line.is_promotion_line:
                        line.unlink()
                    else:
                        if product_list:
                            for data in product_list:
                                if data['product_id'] == line.product_id.id:
                                    data['qty'] += line.product_uom_qty
                                    count += 1
                            if count == 0:
                                product_list.append({
                                    'product_id': line.product_id.id,
                                    'qty': line.product_uom_qty,
                                })
                        else:
                            product_list.append({
                                'product_id': line.product_id.id,
                                'qty': line.product_uom_qty,
                            })
                        if category_list:
                            for prod in category_list:
                                if prod['category'] == line.product_id.categ_id.id:
                                    prod['qty'] += line.product_uom_qty
                                    categ_count += 1

                            if categ_count == 0:
                                category_list.append({
                                    'qty': line.product_uom_qty,
                                    'category': line.product_id.categ_id.id,
                                })
                        else:
                            category_list.append({
                                'qty': line.product_uom_qty,
                                'category': line.product_id.categ_id.id,
                            })
                category_rule_ids = []
                product_rule_ids = []
                for obj in self.sale_promotion_id:
                    for promo_lines in obj.item_ids:
                        if not promo_lines.date_start or promo_lines.date_start <= date_order:
                            if not promo_lines.date_end or promo_lines.date_end >= date_order:
                                if promo_lines.applied_on == 'product_category':
                                    categ_val = {'rule': promo_lines,
                                                 'category': promo_lines.categ_id.id,
                                                 'qty': promo_lines.min_quantity,
                                                 }
                                    category_rule_ids.append(categ_val)
                                elif promo_lines.applied_on == 'product':

                                        pr_val = {'rule': promo_lines,
                                                  'product_id': promo_lines.product_tmpl_id.id,
                                                  'qty': promo_lines.min_quantity,
                                                  }
                                        product_rule_ids.append(pr_val)
                sale_line_obj = self.env['sale.order.line']
                if product_rule_ids and product_list:
                    for data in product_list:
                        rules = []
                        for i in product_rule_ids:
                            if i['product_id'] == data['product_id']:
                                if data['qty'] >= i['rule'].min_quantity:
                                    rules.append(i)
                        if len(rules) > 1:
                            max_qty_rule = max(rules, key=lambda x: x['qty'])
                            for line in max_qty_rule['rule'].promotion_rule_lines:
                                sale_line_obj.create({
                                    'name': line.product_id.name,
                                    'price_unit': 0,
                                    'product_uom_qty': line.quantity,
                                    'order_id': order.id,
                                    'discount': 0.0,
                                    'product_uom': line.product_id.uom_id.id,
                                    'product_id': line.product_id.id,
                                    'tax_id': [],
                                    'is_promotion_line': True,
                                })
                        elif len(rules) == 1:
                            for r in rules:
                                for line in r['rule'].promotion_rule_lines:
                                    sale_line_obj.create({
                                        'name': line.product_id.name,
                                        'price_unit': 0,
                                        'product_uom_qty': line.quantity,
                                        'order_id': order.id,
                                        'discount': 0.0,
                                        'product_uom': line.product_id.uom_id.id,
                                        'product_id': line.product_id.id,
                                        'tax_id': [],
                                        'is_promotion_line': True,
                                    })
                        else:
                            pass

                if category_rule_ids and category_list:
                    for categ in category_list:
                        rules = []
                        for r in category_rule_ids:
                            if categ['category'] == r['category']:
                                if categ['qty'] >= r['rule'].min_quantity:
                                    rules.append(r)
                        if len(rules) > 1:
                            max_qty_rule = max(rules, key=lambda x: x['qty'])
                            for line in max_qty_rule['rule'].promotion_rule_lines:
                                sale_line_obj.create({
                                    'name': line.product_id.name,
                                    'price_unit': 0,
                                    'product_uom_qty': line.quantity,
                                    'order_id': order.id,
                                    'discount': 0.0,
                                    'product_uom': line.product_id.uom_id.id,
                                    'product_id': line.product_id.id,
                                    'tax_id': [],
                                    'is_promotion_line': True,
                                })
                        elif len(rules) == 1:
                            for r in rules:
                                for line in r['rule'].promotion_rule_lines:
                                    sale_line_obj.create({
                                        'name': line.product_id.name,
                                        'price_unit': 0,
                                        'product_uom_qty': line.quantity,
                                        'order_id': order.id,
                                        'discount': 0.0,
                                        'product_uom': line.product_id.uom_id.id,
                                        'product_id': line.product_id.id,
                                        'tax_id': [],
                                        'is_promotion_line': True,
                                    })
                        else:
                            pass
            else:
                raise UserError(_('Please Select an Promotion Rule.'))


class SaleOrderLine(models.Model):
    _inherit = 'sale.order.line'

    is_promotion_line = fields.Boolean(string='Promotion Line')