[IMP] mail: differentiate message and notification in channel

This PR changes the way notification are displayed inside the a channel.
Currently, notification look exactly the same as a message send by the user.

task-2918956

closes odoo/odoo#98262

Related: odoo/enterprise#30732
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>

addons/mail/static/src/components/message_list/message_list.xml

@@ -62,7 +62,8 @@
                                 <t t-set="current_day" t-value="message_day"/>
                             </div>
                         </t>
-                        <Message record="messageListViewItem.messageView"/>
+                        <NotificationMessageView t-if="messageListViewItem.notificationMessageView" record="messageListViewItem.notificationMessageView"/>
+                        <Message t-if="messageListViewItem.messageView" record="messageListViewItem.messageView"/>
                     </t>
                 </t>
                 <!-- LOADING (if order desc)-->

addons/mail/static/src/components/notification_message_view/notification_message_view.js

@@ -0,0 +1,23 @@
+/** @odoo-module **/
+
+import { registerMessagingComponent } from '@mail/utils/messaging_component';
+
+const { Component } = owl;
+
+class NotificationMessageView extends Component {
+
+    /**
+     * @returns {NotificationMessageView}
+     */
+    get notificationMessageView() {
+        return this.props.record;
+    }
+
+}
+
+Object.assign(NotificationMessageView, {
+    props: { record: Object },
+    template: 'mail.NotificationMessageView',
+});
+
+registerMessagingComponent(NotificationMessageView);

addons/mail/static/src/components/notification_message_view/notification_message_view.scss

@@ -0,0 +1,3 @@
+.o_mail_notification {
+    display: inline;
+}

addons/mail/static/src/components/notification_message_view/notification_message_view.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<templates xml:space="preserve">
+    <t t-name="mail.NotificationMessageView" owl="1">
+        <div class="o_NotificationMessageView d-flex justify-content-center">
+            <div class="flex-grow-1"/>
+            <div class="text-500 small px-3" t-out="notificationMessageView.notificationText">
+                <span class="d-inline" t-esc="notificationMessageView.message.authorName"/> <t t-out="notificationMessageView.message.prettyBodyAsMarkup"/>
+            </div>
+            <div class="flex-grow-1"/>
+        </div>
+    </t>
+</templates>

addons/mail/static/src/models/message.js

@@ -817,6 +817,10 @@ registerModel({
             compute: '_computeMessageTypeText',
         }),
         message_type: attr(),
+        notificationMessageViews: many('NotificationMessageView', {
+            inverse: 'message',
+            isCausal: true,
+        }),
         /**
          * States the views that are displaying this message.
          */

addons/mail/static/src/models/message_list_view_item.js

@@ -2,6 +2,7 @@
 
 import { registerModel } from '@mail/model/model_core';
 import { attr, one } from '@mail/model/model_field';
+import { clear } from '@mail/model/model_field_command';
 
 /**
  * Models a relation between a message list view and a message view where
@@ -9,6 +10,28 @@ import { attr, one } from '@mail/model/model_field';
  */
 registerModel({
     name: 'MessageListViewItem',
+    recordMethods: {
+        /**
+         * @private
+         * @returns {FieldCommand}
+         */
+        _computeNotificationMessageView() {
+            if (this.message.message_type === 'notification' && this.message.originThread.channel) {
+                return {};
+            }
+            return clear();
+        },
+        /**
+         * @private
+         * @returns {FieldCommand}
+         */
+        _computeMessageView() {
+            if (this.message.message_type !== 'notification' || !this.message.originThread.channel) {
+                return {};
+            }
+            return clear();
+        },
+    },
     fields: {
         isSquashed: attr({
             required: true,
@@ -21,12 +44,15 @@ registerModel({
             identifying: true,
             inverse: 'messageListViewItems',
         }),
-        messageView: one('MessageView', {
-            default: {},
+        notificationMessageView: one('NotificationMessageView', {
+            compute: '_computeNotificationMessageView',
+            inverse: 'messageListViewItemOwner',
+            isCausal: true,
+        }),
+        messageView: one('MessageView', {
+            compute: '_computeMessageView',
             inverse: 'messageListViewItemOwner',
             isCausal: true,
-            readonly: true,
-            required: true,
         }),
     },
 });

addons/mail/static/src/models/message_notification_view.js

@@ -0,0 +1,19 @@
+/** @odoo-module **/
+
+import { registerModel } from '@mail/model/model_core';
+import { one } from '@mail/model/model_field';
+
+registerModel({
+    name: 'NotificationMessageView',
+    fields: {
+        message: one('Message', {
+            related: 'messageListViewItemOwner.message',
+            inverse: 'notificationMessageViews',
+            required: true,
+        }),
+        messageListViewItemOwner: one('MessageListViewItem', {
+            identifying: true,
+            inverse: 'notificationMessageView',
+        }),
+    },
+});

addons/mail/static/src/models/thread_view.js

@@ -155,7 +155,7 @@ registerModel({
                 return clear();
             }
             const { length, [length - 1]: messageListViewItem } = this.messageListView.messageListViewItems;
-            return messageListViewItem ? messageListViewItem.messageView : clear();
+            return messageListViewItem && messageListViewItem.messageView ? messageListViewItem.messageView : clear();
         },
         /**
          * @private