from odoo import api, fields, models

class ResConfigSettings(models.TransientModel):
    _inherit = 'res.config.settings'

    pos_reward_point_digits = fields.Integer(
        string="Reward Point Digits",
        config_parameter='pos_reward_point_digits',
        default=2
    )

    @api.model
    def get_values(self):
        res = super(ResConfigSettings, self).get_values()
        precision = self.env.ref('pos_reward_point_digits.dp_reward_point', raise_if_not_found=False)
        if precision:
            res.update({
                'pos_reward_point_digits': precision.digits,
            })
        return res

    def set_values(self):
        super(ResConfigSettings, self).set_values()
        precision = self.env.ref('pos_reward_point_digits.dp_reward_point', raise_if_not_found=False)
        if precision and precision.digits != self.pos_reward_point_digits:
            precision.sudo().digits = self.pos_reward_point_digits