# Copyright 2019 Camptocamp SA
# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl)
from odoo import models


class BaseModel(models.BaseModel):

    _inherit = "base"

    def get_field_translations(self, field_names):
        """Get only the existing translations for specified field

        :param field_name: Name of the field
        :return: dict of
            {self.id: {'lang_code': {'field_name':ir.translation,value}}
        """
        read_res = self.with_context(lang="en_US").read(fields=field_names)
        res = {}
        for rec in read_res:
            rec_id = rec.get("id")
            del rec["id"]
            res[rec_id] = {"en_US": rec}
        for rec_id, values in res.items():
            for name in field_names:

                tr_read_res = self.env["ir.translation"].search_read(
                    [
                        ("name", "=", "{},{}".format(self._name, name)),
                        ("res_id", "=", rec_id),
                        ("lang", "!=", "en_US"),
                    ]
                )
                for tr_res in tr_read_res:
                    if not tr_res.get("lang") in values:
                        values[tr_res.get("lang")] = {}
                    values[tr_res.get("lang")][name] = tr_res.get("value")
        return res