# -*- coding: utf-8 -*-
"""Classes extending the populate factory for Companies and related models.

Only adding specificities of basic accounting applications.
"""
from odoo import models, _
from odoo.tools import populate
from odoo.exceptions import UserError

import logging
from functools import lru_cache

_logger = logging.getLogger(__name__)


class ResCompany(models.Model):
    """Populate factory part for the accountings applications of res.company."""

    _inherit = "res.company"

    def _populate(self, size):
        @lru_cache()
        def search_coa_ids(currency_id):
            return self.env['account.chart.template'].search([('currency_id', '=', currency_id)])

        records = super()._populate(size)
        _logger.info('Loading Chart Template')
        default_chart_templates = self.env['account.chart.template'].search([], limit=1)
        if not default_chart_templates:
            # TODO install l10n_generic_coa ?
            raise UserError(_(
                "At least one localization is needed to be installed in order to populate the "
                "database with accounting"
            ))
        random = populate.Random('res.company+chart_template_selector')

        # Load the a chart of accounts matching the currency of the company for the 3 first created companies
        # We are loading an existing CoA and not populating it because:
        #   * it reflects best real use cases.
        #   * it allows checking reports by localization
        #   * the config is complete with try_loading(), no need to adapt when the model changes
        #   * it is way easier :-)
        # We are loading only for 3 companies because:
        #   * It takes a few hundreds of a second to create account.move records in batch.
        #     Because we want to have a lot of entries for at least one company (in order to test
        #     reports, functions and widgets performances for instance), we can't afford to do it for
        #     a lot of companies.
        #   * it would be useless to have entries for all the companies, we can already do everything with
        #     entries in only a few (but multiple) companies.
        # Note that we can still populate some new records on top of the CoA if it makes sense,
        # like account.journal for instance.
        for company in records[:3]:
            chart_templates_cur = search_coa_ids(company.currency_id.id) or default_chart_templates
            random.choice(chart_templates_cur).with_company(company.id).try_loading()
        return records