# Part of Odoo. See LICENSE file for full copyright and licensing details.

from odoo import api, fields, models


class WebsiteVisitor(models.Model):
    _inherit = 'website.visitor'

    visitor_product_count = fields.Integer(
        string="Product Views",
        help="Total number of views on products",
        compute='_compute_product_statistics',
    )
    product_ids = fields.Many2many(
        string="Visited Products",
        comodel_name='product.product',
        compute='_compute_product_statistics',
    )
    product_count = fields.Integer(
        string='Products Views',
        help="Total number of product viewed",
        compute='_compute_product_statistics',
    )

    @api.depends('website_track_ids')
    def _compute_product_statistics(self):
        results = self.env['website.track']._read_group([
            ('visitor_id', 'in', self.ids), ('product_id', '!=', False),
            ('product_id', 'any', self.env['product.product']._check_company_domain(self.env.companies)),
        ], ['visitor_id'], ['product_id:array_agg', '__count'])
        mapped_data = {
            visitor.id: {'product_count': count, 'product_ids': product_ids}
            for visitor, product_ids, count in results
        }

        for visitor in self:
            visitor_info = mapped_data.get(visitor.id, {'product_ids': [], 'product_count': 0})

            visitor.product_ids = [(6, 0, visitor_info['product_ids'])]
            visitor.visitor_product_count = visitor_info['product_count']
            visitor.product_count = len(visitor_info['product_ids'])

    def _add_viewed_product(self, product_id):
        """ add a website_track with a page marked as viewed"""
        self.ensure_one()
        if product_id and self.env['product.product'].browse(product_id)._is_variant_possible():
            domain = [('product_id', '=', product_id)]
            website_track_values = {'product_id': product_id}
            self._add_tracking(domain, website_track_values)