[IMP] hr_fleet: improve the employer On/Offboarding plan activities

PURPOSE:
Companies want to have a better integration, we need to focus on the On/Offboarding process,
 to find automation and something to show to our customers.

In this commit, we add the "Fleet Manager" in the responsible list of the activities
generated from a plan.

Case 1:
 If employee is not linked with fleet, `Employee XXX is not linked to a vehicle`
 this  warning will be appeared.

Case 2:
 If employee linked with  fleet  but doesn't  fleet manager set  on fleet,
`Employee's vehicle XXX is not linked to a fleet manager.` this warning will be appeared.

task-3081261

closes odoo/odoo#108892

Signed-off-by: Kevin Baptiste <kba@odoo.com>

addons/hr_fleet/__manifest__.py

@@ -13,6 +13,7 @@
         'views/fleet_vehicle_views.xml',
         'views/fleet_vehicle_cost_views.xml',
         'wizard/hr_departure_wizard_views.xml',
+         'data/hr_fleet_data.xml',
     ],
     'demo': [
         'data/hr_fleet_demo.xml',

addons/hr_fleet/data/hr_fleet_data.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <data noupdate="1">
+        <record id="onboarding_fleet_training" model="hr.plan.activity.type">
+            <field name="summary">Fleet Training</field>
+            <field name="responsible">fleet_manager</field>
+            <field name="plan_id" ref="hr.onboarding_plan"/>
+        </record>
+
+        <record id="offboarding_fleet" model="hr.plan.activity.type">
+            <field name="summary">Take Back Fleet</field>
+            <field name="responsible">fleet_manager</field>
+            <field name="plan_id" ref="hr.offboarding_plan"/>
+        </record>
+
+    </data>
+</odoo>

addons/hr_fleet/models/__init__.py

@@ -8,3 +8,4 @@ from . import fleet_vehicle
 from . import fleet_vehicle_log_contract
 from . import fleet_vehicle_log_services
 from . import fleet_vehicle_odometer
+from . import hr_plan_activity_type

addons/hr_fleet/models/hr_plan_activity_type.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import fields, models, _
+
+
+class HrPlanActivityType(models.Model):
+    _inherit = 'hr.plan.activity.type'
+
+    responsible = fields.Selection(selection_add=[('fleet_manager', "Fleet Manager"), ('employee',)], ondelete={'fleet_manager': 'set default'})
+
+    def get_responsible_id(self, employee):
+        if self.responsible == 'fleet_manager':
+            employee_id = self.env['hr.employee'].browse(employee._origin.id)
+            vehicle = employee_id.car_ids[:1]
+            warning = False
+            if not vehicle:
+                warning = _('Employee %s is not linked to a vehicle.', employee_id.name)
+            if vehicle and not vehicle.manager_id:
+                warning = _("Employee's vehicle %s is not linked to a fleet manager.", employee_id.name)
+            return {
+                'responsible': vehicle.manager_id,
+                'warning': warning,
+            }
+        return super().get_responsible_id(employee)