xbus_envelope.py

##############################################################################
#
#    Xbus Common, for Odoo
#    Copyright © 2023 XCG Consulting <https://xcg-consulting.fr>
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
import uuid

from odoo import fields, models, tools


class XbusEnvelope(models.Model):
    """Represents an xbus envelope."""

    _name = "xbus.envelope"
    _description = "Xbus Envelope"

    _auto = False
    # No automatic column for this table, it is used with an external system
    _log_access = False
    _order = "create_date DESC, id DESC"
    _rec_name = "uid"

    create_date = fields.Datetime(string="Creation Date", readonly=True)

    uid = fields.Char(string="UID", default=lambda self: uuid.uuid4())

    comment = fields.Char()

    message_ids = fields.One2many(
        string="Messages", comodel_name="xbus.message", inverse_name="envelope_id"
    )

    message_count = fields.Integer(
        string="Number of messages", compute="_compute_message_count", store=False
    )

    def _compute_message_count(self):
        for record in self:
            record.message_count = len(record.message_ids)

    def init(self):
        super().init()
        self.env.cr.execute(
            """CREATE TABLE IF NOT EXISTS xbus_envelope (
            id serial primary key,
            create_date timestamp without time zone DEFAULT (now() at time zone 'utc'),
            comment character varying not null,
            uid uuid not null
            )"""
        )
        tools.create_unique_index(
            self._cr, "xbus_envelope_uid_uniq", self._table, ["uid"]
        )
        tools.create_index(
            self._cr, "xbus_envelope_create_date_index", self._table, ["create_date"]
        )