17 files changed, 158 insertions, 65 deletions

diff --git a/client/src/app/+my-account/my-account-notifications/my-account-notifications.component.html b/client/src/app/+my-account/my-account-notifications/my-account-notifications.component.html
index b98cd1156..e3b226768 100644
--- a/client/src/app/+my-account/my-account-notifications/my-account-notifications.component.html
+++ b/client/src/app/+my-account/my-account-notifications/my-account-notifications.component.html
@@ -1,8 +1,9 @@
 <h1 class="visually-hidden" i18n>Notifications</h1>
+
 <div class="header">
-  <a routerLink="/my-account/settings" fragment="notifications" i18n>
+  <a class="peertube-button-link grey-button" routerLink="/my-account/settings" fragment="notifications">
     <my-global-icon iconName="cog" aria-hidden="true"></my-global-icon>
-    Notification preferences
+    <span i18n>Notification preferences</span>
   </a>
 
   <div class="peertube-select-container peertube-select-button ms-2 me-2">
@@ -13,7 +14,7 @@
     </select>
   </div>
 
-  <button class="btn ms-auto" [disabled]="!hasUnreadNotifications()" (click)="markAllAsRead()">
+  <button class="ms-auto peertube-button grey-button" [disabled]="!hasUnreadNotifications()" (click)="markAllAsRead()">
     <ng-container *ngIf="hasUnreadNotifications()">
       <my-global-icon iconName="tick" aria-hidden="true"></my-global-icon>
 
diff --git a/client/src/app/+my-account/my-account-notifications/my-account-notifications.component.scss b/client/src/app/+my-account/my-account-notifications/my-account-notifications.component.scss
index d412e568f..cee338991 100644
--- a/client/src/app/+my-account/my-account-notifications/my-account-notifications.component.scss
+++ b/client/src/app/+my-account/my-account-notifications/my-account-notifications.component.scss
@@ -3,17 +3,13 @@
 
 .header {
   display: flex;
-  margin-bottom: 20px;
+  margin-bottom: 1.25rem;
 
   a {
-    @include peertube-button-link;
-    @include grey-button;
     @include button-with-icon(18px, 3px, -1px);
   }
 
   button {
-    @include peertube-button;
-    @include grey-button;
     @include button-with-icon(20px, 3px, -1px);
   }
 
diff --git a/client/src/app/header/header.component.html b/client/src/app/header/header.component.html
index b5e9e3dd8..4e327769d 100644
--- a/client/src/app/header/header.component.html
+++ b/client/src/app/header/header.component.html
@@ -1,6 +1,6 @@
 <my-search-typeahead class="w-100 d-flex justify-content-center"></my-search-typeahead>
 
-<a class="publish-button" routerLink="/videos/upload">
+<a class="peertube-button-link orange-button publish-button" routerLink="/videos/upload">
   <my-global-icon iconName="upload" aria-hidden="true"></my-global-icon>
   <span i18n class="publish-button-label">Publish</span>
 </a>
diff --git a/client/src/app/header/header.component.scss b/client/src/app/header/header.component.scss
index ef7749ced..37bee4645 100644
--- a/client/src/app/header/header.component.scss
+++ b/client/src/app/header/header.component.scss
@@ -2,9 +2,7 @@
 @use '_mixins' as *;
 
 .publish-button {
-  @include peertube-button-link;
-  @include orange-button;
-  @include button-with-icon(22px, 3px, -1px);
+  @include button-with-icon(21px, 3px, -1px);
   @include margin-right(25px);
 
   @media screen and (max-width: $mobile-view) {
diff --git a/client/src/app/header/search-typeahead.component.scss b/client/src/app/header/search-typeahead.component.scss
index 48b61cf3f..b96853400 100644
--- a/client/src/app/header/search-typeahead.component.scss
+++ b/client/src/app/header/search-typeahead.component.scss
@@ -2,13 +2,11 @@
 @use '_mixins' as *;
 
 #search-video {
-  @include peertube-input-text($search-input-width);
+  @include peertube-input-text($search-input-width, 14px);
 
   @include padding-left(10px);
   @include padding-right(40px); // For the search icon
 
-  font-size: 14px;
-
   &::placeholder {
     color: pvar(--inputPlaceholderColor);
   }
diff --git a/client/src/app/menu/notification.component.scss b/client/src/app/menu/notification.component.scss
index 256ed7328..7f70aeff6 100644
--- a/client/src/app/menu/notification.component.scss
+++ b/client/src/app/menu/notification.component.scss
@@ -120,9 +120,13 @@
           }
         }
 
-        my-global-icon {
+        my-global-icon[iconName=cog] {
           width: 20px;
         }
+
+        my-global-icon[iconName=tick] {
+          width: 26px;
+        }
       }
 
       .all-notifications {
diff --git a/client/src/app/shared/shared-main/buttons/action-dropdown.component.html b/client/src/app/shared/shared-main/buttons/action-dropdown.component.html
index 17acb3eab..bbfab7b37 100644
--- a/client/src/app/shared/shared-main/buttons/action-dropdown.component.html
+++ b/client/src/app/shared/shared-main/buttons/action-dropdown.component.html
@@ -1,7 +1,7 @@
 <div class="dropdown-root" ngbDropdown [placement]="placement" [container]="container" *ngIf="areActionsDisplayed(actions, entry)">
   <button
     class="action-button" [ngClass]="{ small: buttonSize === 'small', grey: theme === 'grey', orange: theme === 'orange', 'button-styled': buttonStyled }"
-    ngbDropdownToggle role="button" aria-label="Open actions" i18n-aria-label
+    ngbDropdownToggle aria-label="Open actions" i18n-aria-label
   >
     <my-global-icon *ngIf="!label && buttonDirection === 'horizontal'" class="more-icon" iconName="more-horizontal"></my-global-icon>
     <my-global-icon *ngIf="!label && buttonDirection === 'vertical'" class="more-icon" iconName="more-vertical"></my-global-icon>
diff --git a/client/src/app/shared/shared-main/buttons/action-dropdown.component.scss b/client/src/app/shared/shared-main/buttons/action-dropdown.component.scss
index 5d400c0f7..8e5bb266f 100644
--- a/client/src/app/shared/shared-main/buttons/action-dropdown.component.scss
+++ b/client/src/app/shared/shared-main/buttons/action-dropdown.component.scss
@@ -41,8 +41,7 @@
 
   &.small {
     font-size: 14px;
-    height: 20px;
-    line-height: 20px;
+    padding: 0 10px;
   }
 }
 
diff --git a/client/src/sass/include/_mixins.scss b/client/src/sass/include/_mixins.scss
index 004f49262..1ce584f9b 100644
--- a/client/src/sass/include/_mixins.scss
+++ b/client/src/sass/include/_mixins.scss
@@ -80,8 +80,16 @@
   }
 }
 
-@mixin peertube-input-text($width) {
-  padding: 4px 15px;
+@mixin rounded-line-height-1-5 ($font-size) {
+  line-height: $font-size + math.round(math.div($font-size, 2));
+}
+
+@mixin peertube-input-text($width, $font-size: $form-input-font-size) {
+  @include rounded-line-height-1-5($font-size);
+
+  font-size: $font-size;
+
+  padding: 3px 15px;
   display: inline-block;
   width: $width;
   max-width: $width;
@@ -89,8 +97,6 @@
   background-color: pvar(--inputBackgroundColor);
   border: 1px solid pvar(--inputBorderColor);
   border-radius: 3px;
-  font-size: $form-input-font-size;
-  line-height: $form-input-line-height;
 
   &::placeholder {
     color: pvar(--inputPlaceholderColor);
@@ -241,6 +247,8 @@
 }
 
 @mixin peertube-button {
+  @include rounded-line-height-1-5($button-font-size);
+
   padding: 4px 13px;
 
   border: 0;
@@ -253,7 +261,6 @@
   cursor: pointer;
 
   font-size: $button-font-size;
-  line-height: $button-font-size + math.round(math.div($button-font-size, 2));
 
   my-global-icon + * {
     @include margin-right(4px);
@@ -303,10 +310,6 @@
     width: $width;
     top: $top;
   }
-
-  span {
-    vertical-align: middle;
-  }
 }
 
 @mixin peertube-file {
@@ -397,15 +400,17 @@
   }
 
   select {
-    padding: 4px 35px 4px 12px;
+    @include rounded-line-height-1-5($form-input-font-size);
+
+    font-size: $form-input-font-size;
+
+    padding: 3px 35px 3px 12px;
     position: relative;
     border: 1px solid pvar(--inputBorderColor);
     background: transparent none;
     appearance: none;
     text-overflow: ellipsis;
     color: pvar(--mainForegroundColor);
-    font-size: $form-input-font-size;
-    line-height: $form-input-line-height;
 
     &:focus {
       outline: none;
@@ -432,6 +437,9 @@
       font-weight: $font-semibold;
       color: pvar(--greyForegroundColor);
       border: 0;
+
+      // No border, add +1 to vertical padding
+      padding: 4px 35px 4px 12px;
     }
   }
 }
diff --git a/client/src/sass/include/_variables.scss b/client/src/sass/include/_variables.scss
index 8358270da..1eb3135f4 100644
--- a/client/src/sass/include/_variables.scss
+++ b/client/src/sass/include/_variables.scss
@@ -96,7 +96,6 @@ $activated-action-button-color: #212529;
 
 $focus-box-shadow-form: 0 0 0 .2rem;
 $form-input-font-size: 15px;
-$form-input-line-height: 1.4;
 
 $video-watch-player-factor: math.div(16, 9);
 $video-watch-info-margin-left: 44px;
diff --git a/client/src/sass/ng-select.scss b/client/src/sass/ng-select.scss
index dfe1f6f0d..4c7258232 100644
--- a/client/src/sass/ng-select.scss
+++ b/client/src/sass/ng-select.scss
@@ -35,8 +35,9 @@ $ng-select-input-text: pvar(--mainForegroundColor);
 @import '@ng-select/ng-select/scss/default.theme';
 
 .ng-select {
+  @include rounded-line-height-1-5($ng-select-value-font-size);
+
   font-size: $ng-select-value-font-size;
-  line-height: $form-input-line-height;
 
   &.ng-select-focused {
     &:not(.ng-select-opened) > .ng-select-container {
diff --git a/server/lib/activitypub/videos/shared/creator.ts b/server/lib/activitypub/videos/shared/creator.ts
index 07252fea2..77321d8a5 100644
--- a/server/lib/activitypub/videos/shared/creator.ts
+++ b/server/lib/activitypub/videos/shared/creator.ts
@@ -1,6 +1,7 @@
 
 import { logger, loggerTagsFactory, LoggerTagsFn } from '@server/helpers/logger'
 import { sequelizeTypescript } from '@server/initializers/database'
+import { Hooks } from '@server/lib/plugins/hooks'
 import { autoBlacklistVideoIfNeeded } from '@server/lib/video-blacklist'
 import { VideoModel } from '@server/models/video/video'
 import { MThumbnail, MVideoFullLight, MVideoThumbnail } from '@server/types/models'
@@ -61,6 +62,8 @@ export class APVideoCreator extends APVideoAbstractBuilder {
 
         logger.info('Remote video with uuid %s inserted.', this.videoObject.uuid, this.lTags())
 
+        Hooks.runAction('action:activity-pub.remote-video.created', { video: videoCreated, videoAPObject: this.videoObject })
+
         return { autoBlacklisted, videoCreated }
       } catch (err) {
         // FIXME: Use rollback hook when https://github.com/sequelize/sequelize/pull/13038 is released
diff --git a/server/lib/activitypub/videos/updater.ts b/server/lib/activitypub/videos/updater.ts
index 0bf32f440..3677dc3bb 100644
--- a/server/lib/activitypub/videos/updater.ts
+++ b/server/lib/activitypub/videos/updater.ts
@@ -3,6 +3,7 @@ import { resetSequelizeInstance, runInReadCommittedTransaction } from '@server/h
 import { logger, loggerTagsFactory, LoggerTagsFn } from '@server/helpers/logger'
 import { Notifier } from '@server/lib/notifier'
 import { PeerTubeSocket } from '@server/lib/peertube-socket'
+import { Hooks } from '@server/lib/plugins/hooks'
 import { autoBlacklistVideoIfNeeded } from '@server/lib/video-blacklist'
 import { VideoLiveModel } from '@server/models/video/video-live'
 import { MActor, MChannelAccountLight, MChannelId, MVideoAccountLightBlacklistAllFiles, MVideoFullLight } from '@server/types/models'
@@ -81,6 +82,8 @@ export class APVideoUpdater extends APVideoAbstractBuilder {
         PeerTubeSocket.Instance.sendVideoLiveNewState(videoUpdated)
       }
 
+      Hooks.runAction('action:activity-pub.remote-video.updated', { video: videoUpdated, videoAPObject: this.videoObject })
+
       logger.info('Remote video with uuid %s updated', this.videoObject.uuid, this.lTags())
 
       return videoUpdated
diff --git a/server/tests/fixtures/peertube-plugin-test/main.js b/server/tests/fixtures/peertube-plugin-test/main.js
index 5325e14c4..84b479548 100644
--- a/server/tests/fixtures/peertube-plugin-test/main.js
+++ b/server/tests/fixtures/peertube-plugin-test/main.js
@@ -1,42 +1,53 @@
 async function register ({ registerHook, registerSetting, settingsManager, storageManager, peertubeHelpers }) {
-  const actionHooks = [
-    'action:application.listening',
-    'action:notifier.notification.created',
+  {
+    const actionHooks = [
+      'action:application.listening',
+      'action:notifier.notification.created',
 
-    'action:api.video.updated',
-    'action:api.video.deleted',
-    'action:api.video.uploaded',
-    'action:api.video.viewed',
+      'action:api.video.updated',
+      'action:api.video.deleted',
+      'action:api.video.uploaded',
+      'action:api.video.viewed',
 
-    'action:api.video-channel.created',
-    'action:api.video-channel.updated',
-    'action:api.video-channel.deleted',
+      'action:api.video-channel.created',
+      'action:api.video-channel.updated',
+      'action:api.video-channel.deleted',
 
-    'action:api.live-video.created',
+      'action:api.live-video.created',
 
-    'action:api.video-thread.created',
-    'action:api.video-comment-reply.created',
-    'action:api.video-comment.deleted',
+      'action:api.video-thread.created',
+      'action:api.video-comment-reply.created',
+      'action:api.video-comment.deleted',
 
-    'action:api.video-caption.created',
-    'action:api.video-caption.deleted',
+      'action:api.video-caption.created',
+      'action:api.video-caption.deleted',
 
-    'action:api.user.blocked',
-    'action:api.user.unblocked',
-    'action:api.user.registered',
-    'action:api.user.created',
-    'action:api.user.deleted',
-    'action:api.user.updated',
-    'action:api.user.oauth2-got-token',
+      'action:api.user.blocked',
+      'action:api.user.unblocked',
+      'action:api.user.registered',
+      'action:api.user.created',
+      'action:api.user.deleted',
+      'action:api.user.updated',
+      'action:api.user.oauth2-got-token',
 
-    'action:api.video-playlist-element.created'
-  ]
+      'action:api.video-playlist-element.created'
+    ]
 
-  for (const h of actionHooks) {
-    registerHook({
-      target: h,
-      handler: () => peertubeHelpers.logger.debug('Run hook %s.', h)
-    })
+    for (const h of actionHooks) {
+      registerHook({
+        target: h,
+        handler: () => peertubeHelpers.logger.debug('Run hook %s.', h)
+      })
+    }
+
+    for (const h of [ 'action:activity-pub.remote-video.created', 'action:activity-pub.remote-video.updated' ]) {
+      registerHook({
+        target: h,
+        handler: ({ video, videoAPObject }) => {
+          peertubeHelpers.logger.debug('Run hook %s - AP %s - video %s.', h, video.name, videoAPObject.name )
+        }
+      })
+    }
   }
 
   registerHook({
diff --git a/server/tests/plugins/action-hooks.ts b/server/tests/plugins/action-hooks.ts
index a266ae7f1..98228f79d 100644
--- a/server/tests/plugins/action-hooks.ts
+++ b/server/tests/plugins/action-hooks.ts
@@ -4,6 +4,7 @@ import { ServerHookName, VideoPlaylistPrivacy, VideoPrivacy } from '@shared/mode
 import {
   cleanupTests,
   createMultipleServers,
+  doubleFollow,
   killallServers,
   PeerTubeServer,
   PluginsCommand,
@@ -36,6 +37,8 @@ describe('Test plugin action hooks', function () {
         enabled: true
       }
     })
+
+    await doubleFollow(servers[0], servers[1])
   })
 
   describe('Application hooks', function () {
@@ -231,6 +234,27 @@ describe('Test plugin action hooks', function () {
     })
   })
 
+  describe('Activity Pub hooks', function () {
+    let videoUUID: string
+
+    it('Should run action:activity-pub.remote-video.created', async function () {
+      this.timeout(30000)
+
+      const { uuid } = await servers[1].videos.quickUpload({ name: 'remote video' })
+      videoUUID = uuid
+
+      await servers[0].servers.waitUntilLog('action:activity-pub.remote-video.created - AP remote video - video remote video')
+    })
+
+    it('Should run action:activity-pub.remote-video.updated', async function () {
+      this.timeout(30000)
+
+      await servers[1].videos.update({ id: videoUUID, attributes: { name: 'remote video updated' } })
+
+      await servers[0].servers.waitUntilLog('action:activity-pub.remote-video.updated - AP remote video - video remote video')
+    })
+  })
+
   after(async function () {
     await cleanupTests(servers)
   })
diff --git a/shared/models/plugins/server/server-hook.model.ts b/shared/models/plugins/server/server-hook.model.ts
index ca83672d0..d2ebe936e 100644
--- a/shared/models/plugins/server/server-hook.model.ts
+++ b/shared/models/plugins/server/server-hook.model.ts
@@ -1,4 +1,4 @@
-// {hookType}:{api?}.{location}.{subLocation?}.{actionType}.{target}
+// {hookType}:{root}.{location}.{subLocation?}.{actionType}.{target}
 
 export const serverFilterHookObject = {
   // Filter params/result used to list videos for the REST API
@@ -184,7 +184,11 @@ export const serverActionHookObject = {
   'action:api.user.oauth2-got-token': true,
 
   // Fired when a video is added to a playlist
-  'action:api.video-playlist-element.created': true
+  'action:api.video-playlist-element.created': true,
+
+  // Fired when a remote video has been created/updated
+  'action:activity-pub.remote-video.created': true,
+  'action:activity-pub.remote-video.updated': true
 }
 
 export type ServerActionHookName = keyof typeof serverActionHookObject
diff --git a/support/doc/plugins/guide.md b/support/doc/plugins/guide.md
index 337f3d97f..c5e3236ca 100644
--- a/support/doc/plugins/guide.md
+++ b/support/doc/plugins/guide.md
@@ -16,6 +16,7 @@
     - [Add external auth methods](#add-external-auth-methods)
     - [Add new transcoding profiles](#add-new-transcoding-profiles)
     - [Server helpers](#server-helpers)
+    - [Federation](#federation)
   - [Client API (themes & plugins)](#client-api-themes--plugins)
     - [Get plugin static and router routes](#get-plugin-static-and-router-routes)
     - [Notifier](#notifier)
@@ -587,6 +588,49 @@ async function register ({
 
 See the [plugin API reference](https://docs.joinpeertube.org/api/plugins) to see the complete helpers list.
 
+#### Federation
+
+You can use some server hooks to federate plugin data to other PeerTube instances that may have installed your plugin.
+
+For example to federate additional video metadata:
+
+```js
+async function register ({ registerHook }) {
+
+  // Send plugin metadata to remote instances
+  // We also update the JSON LD context because we added a new field
+  {
+    registerHook({
+      target: 'filter:activity-pub.video.json-ld.build.result',
+      handler: async (jsonld, { video }) => {
+        return Object.assign(jsonld, { recordedAt: 'https://example.com/event' })
+      }
+    })
+
+    registerHook({
+      target: 'filter:activity-pub.activity.context.build.result',
+      handler: jsonld => {
+        return jsonld.concat([ { recordedAt: 'https://schema.org/recordedAt' } ])
+      }
+    })
+  }
+
+  // Save remote video metadata
+  {
+    for (const h of [ 'action:activity-pub.remote-video.created', 'action:activity-pub.remote-video.updated' ]) {
+      registerHook({
+        target: h,
+        handler: ({ video, videoAPObject }) => {
+          if (videoAPObject.recordedAt) {
+            // Save information about the video
+          }
+        }
+      })
+    }
+  }
+```
+
+
 ### Client API (themes & plugins)
 
 #### Get plugin static and router routes