add default fedi hashtags to AP representation on local events

server/api/models/event.js

@@ -71,6 +71,21 @@ module.exports = (sequelize, DataTypes) => {
       })
     }
 
+    let tags = this.tags?.map(tag => ({
+        type: 'Hashtag',
+        name: '#' + tag.tag,
+        href: `${config.baseurl}/tag/${tag.tag}`
+      })) ?? []
+    
+    // add default fedi hashtags if needed on local events only
+    if (!this.ap_id && settings.default_fedi_hashtags.length) {
+      settings.default_fedi_hashtags.foreach(t => tags.push({
+        type: 'Hashtag',
+        name: '#' + t,
+        href: `${config.baseurl}/tag/${t}`
+      }))
+    }
+
     return {
       id: this?.ap_id ?? `${config.baseurl}/federation/m/${this.id}`,
       name: this.title,
@@ -86,11 +101,7 @@ module.exports = (sequelize, DataTypes) => {
         longitude: this.place.longitude
       },
       attachment,
-      tag: this.tags && this.tags.map(tag => ({
+      tag: tags,
-        type: 'Hashtag',
-        name: '#' + tag.tag,
-        href: `${config.baseurl}/tag/${tag.tag}`
-      })),
       published: this.createdAt,
       ...( type != 'Create' ? { updated: this.updatedAt } : {} ),
       attributedTo: `${config.baseurl}/federation/u/${username}`,

server/federation/helpers.js

@@ -165,7 +165,6 @@ const Helpers = {
             "@id": "toot:focalPoint"
           }
         }]
-        body.object.tag.push({type: 'Hashtag', name: config.default_fedi_hashtag, href: `/tags/${config.default_fedi_hashtag}`})
         const task = new Task({
           name: 'AP',
           method: Helpers.signAndSend,