# Copyright 2013-2019 Akretion, Alexis de Lattre <alexis.delattre@akretion.com>
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

from flectra import _, api, fields, models
from flectra.exceptions import ValidationError


class AccountMoveLine(models.Model):
    _inherit = "account.move.line"

    start_date = fields.Date(index=True)
    end_date = fields.Date(index=True)
    must_have_dates = fields.Boolean(related="product_id.must_have_dates")

    @api.constrains("start_date", "end_date")
    def _check_start_end_dates(self):
        for moveline in self:
            if moveline.start_date and not moveline.end_date:
                raise ValidationError(
                    _("Missing End Date for move line with Name '%s'.")
                    % (moveline.name)
                )
            if moveline.end_date and not moveline.start_date:
                raise ValidationError(
                    _("Missing Start Date for move line with Name '%s'.")
                    % (moveline.name)
                )
            if (
                moveline.end_date
                and moveline.start_date
                and moveline.start_date > moveline.end_date
            ):
                raise ValidationError(
                    _(
                        "Start Date should be before End Date for move line "
                        "with Name '%s'."
                    )
                    % (moveline.name)
                )