# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

from odoo import api, fields, models
from odoo.http import request


class UtmMixin(models.AbstractModel):
    """ Mixin class for objects which can be tracked by marketing. """
    _name = 'utm.mixin'
    _description = 'UTM Mixin'

    campaign_id = fields.Many2one('utm.campaign', 'Campaign',
                                  help="This is a name that helps you keep track of your different campaign efforts, e.g. Fall_Drive, Christmas_Special")
    source_id = fields.Many2one('utm.source', 'Source',
                                help="This is the source of the link, e.g. Search Engine, another domain, or name of email list")
    medium_id = fields.Many2one('utm.medium', 'Medium',
                                help="This is the method of delivery, e.g. Postcard, Email, or Banner Ad")

    @api.model
    def default_get(self, fields):
        values = super(UtmMixin, self).default_get(fields)

        # We ignore UTM for salesmen, except some requests that could be done as superuser_id to bypass access rights.
        if not self.env.is_superuser() and self.env.user.has_group('sales_team.group_sale_salesman'):
            return values

        for url_param, field_name, cookie_name in self.env['utm.mixin'].tracking_fields():
            if field_name in fields:
                field = self._fields[field_name]
                value = False
                if request:
                    # ir_http dispatch saves the url params in a cookie
                    value = request.httprequest.cookies.get(cookie_name)
                # if we receive a string for a many2one, we search/create the id
                if field.type == 'many2one' and isinstance(value, str) and value:
                    Model = self.env[field.comodel_name]
                    records = Model.search([('name', '=', value)], limit=1)
                    if not records:
                        if 'is_website' in records._fields:
                            records = Model.create({'name': value, 'is_website': True})
                        else:
                            records = Model.create({'name': value})
                    value = records.id
                if value:
                    values[field_name] = value
        return values

    def tracking_fields(self):
        # This function cannot be overridden in a model which inherit utm.mixin
        # Limitation by the heritage on AbstractModel
        # record_crm_lead.tracking_fields() will call tracking_fields() from module utm.mixin (if not overridden on crm.lead)
        # instead of the overridden method from utm.mixin.
        # To force the call of overridden method, we use self.env['utm.mixin'].tracking_fields() which respects overridden
        # methods of utm.mixin, but will ignore overridden method on crm.lead
        return [
            # ("URL_PARAMETER", "FIELD_NAME_MIXIN", "NAME_IN_COOKIES")
            ('utm_campaign', 'campaign_id', 'odoo_utm_campaign'),
            ('utm_source', 'source_id', 'odoo_utm_source'),
            ('utm_medium', 'medium_id', 'odoo_utm_medium'),
        ]