from odoo import fields, models


class WebsiteUserCart(models.Model):
    _name = 'website.user.cart'
    _rec_name = 'user_id'
    
    user_id = fields.Many2one('res.users', string='User')
    product_id = fields.Many2one('product.product', string='Product')
    program_line_id = fields.Many2one('promotion.program.line', string='Program', help="Apply program")
    qty = fields.Float(string='Quantity', digits='Product Unit of Measure')
    is_selected = fields.Boolean(string='Selected?', digits='Is selected to process checkout')
    source = fields.Selection([
        ('add_to_cart', 'Add To Cart'),
        ('buy', 'Buy')
    ], 'Source', default='add_to_cart')
    user_other_carts = fields.One2many('website.user.cart', 'id', 'Other Products', compute='_compute_user_other_carts')

    def _compute_user_other_carts(self):
        for record in self:
            others = self.search([('user_id', '=', record.user_id.id)])
            record.user_other_carts = others

    def get_product(self):
        res = {
            'cart_id': self.id, 
            'quantity': self.qty, 
            'selected': self.is_selected,
            'can_buy': True
        }
        
        if self.product_id:
            res['cart_type'] = 'product'
            product = self.product_id.v2_api_single_response(self.product_id)
            res.update(product)
            flashsales = self.product_id._get_active_flash_sale()
            res['has_flashsale'] = True if len(flashsales) > 0 else False
        elif self.program_line_id:
            res['cart_type'] = 'promotion'
            userdata = {
                'partner_id': self.user_id.partner_id.id,
                'user_id': self.user_id.id
            }
            program = self.program_line_id.format(user=userdata, qty=self.qty)
            res.update(program)
            if program['remaining_qty']['transaction'] < self.qty:
                res['can_buy'] = False

        res['subtotal'] = self.qty * res['price']['price_discount']
        
        return res
    
    def get_products(self):
        products = [x.get_product() for x in self]
        
        return products

    def get_product_by_user(self, user_id, selected=False, source=False):
        user_id = int(user_id)
        
        if source == 'buy':
            source = ['buy']
        else:
            source = ['add_to_cart', 'buy']

        parameters = [
            ('user_id', '=', user_id), 
            ('source', 'in', source)
        ]

        if selected:
            parameters.append(('is_selected', '=', True))

        carts = self.search(parameters)
        products = carts.get_products()
        return products
    
    def get_user_checkout(self, user_id, voucher=False, source=False):
        products = self.get_product_by_user(user_id=user_id, selected=True, source=source)
        
        total_purchase = 0
        total_discount = 0
        for product in products:
            if product['cart_type'] == 'promotion':
                price = product['package_price'] * product['quantity']
            else:
                price = product['price']['price'] * product['quantity']
            
            discount_price = price - product['price']['price_discount'] * product['quantity']
            
            total_purchase += price
            total_discount += discount_price

        subtotal = total_purchase - total_discount
        discount_voucher = 0
        if voucher:
            order_line = []
            for product in products:
                if product['cart_type'] == 'promotion':
                    continue
                
                order_line.append({
                    'product_id': self.env['product.product'].browse(product['id']),
                    'price': product['price']['price'],
                    'discount': product['price']['discount_percentage'],
                    'qty': product['quantity'],
                    'subtotal': product['subtotal']
                })
            voucher_info = voucher.apply(order_line)
            discount_voucher = voucher_info['discount']['all']
            subtotal -= discount_voucher
        tax = round(subtotal * 0.11)
        grand_total = subtotal + tax
        total_weight = sum(x['weight'] * x['quantity'] for x in products)
        total_weight = round(total_weight, 2)
        result = {
            'total_purchase': total_purchase,
            'total_discount': total_discount,
            'discount_voucher': discount_voucher,
            'subtotal': subtotal,
            'tax': tax,
            'grand_total': round(grand_total),
            'total_weight': {
                'kg': total_weight,
                'g': total_weight * 1000
            },
            'has_product_without_weight': any(not product.get('weight') or product.get('weight') == 0 for product in products),
            'products': products
        }
        return result
    
    def action_mail_reminder_to_checkout(self, id):
        template = self.env.ref('indoteknik_custom.mail_template_user_cart_reminder_to_checkout')
        template.send_mail(int(id), force_send=True)

    def format_currency(self, number):
        number = int(number)
        return "{:,}".format(number).replace(',', '.')