# -*- coding: utf-8 -*-
# Copyright 2026 Nexa Systems Inc.
# License OPL-1 (Odoo Proprietary License v1.0)
"""Phase C — fire 'shipment_labeled' notification when tracking_number
lands on a fusion.shipment for the first time.

Triggers regardless of how tracking got set: live API call or manual
fallback wizard. Customer gets the tracking link as soon as the label
is generated, not after the package physically ships (that's the
existing 'shipped' event on fp.delivery)."""
import logging

from odoo import models

_logger = logging.getLogger(__name__)


class FusionShipment(models.Model):
    _inherit = 'fusion.shipment'

    def write(self, vals):
        # Identify shipments that gain a tracking number for the first
        # time. Done BEFORE super().write so we can compare before/after.
        will_fire = self.browse()
        if 'tracking_number' in vals and vals.get('tracking_number'):
            will_fire = self.filtered(lambda s: not s.tracking_number)
        res = super().write(vals)
        if not will_fire:
            return res
        Dispatch = self.env.get('fp.notification.template')
        if Dispatch is None:
            return res
        for ship in will_fire:
            partner = (
                ship.sale_order_id.partner_id
                if ship.sale_order_id else False
            )
            if not partner:
                continue
            try:
                Dispatch._dispatch(
                    'shipment_labeled',
                    ship,
                    partner,
                    sale_order=ship.sale_order_id or False,
                )
            except Exception as e:
                _logger.warning(
                    'Shipment %s: shipment_labeled dispatch failed: %s',
                    ship.name, e,
                )
        return res