Update plugins doc

support/doc/plugins/guide.md

@@ -8,14 +8,15 @@
   - [Hooks](#hooks)
   - [Static files](#static-files)
   - [CSS](#css)
-  - [Server helpers (only for plugins)](#server-helpers-only-for-plugins)
+  - [Server API (only for plugins)](#server-api-only-for-plugins)
     - [Settings](#settings)
     - [Storage](#storage)
     - [Update video constants](#update-video-constants)
     - [Add custom routes](#add-custom-routes)
     - [Add external auth methods](#add-external-auth-methods)
     - [Add new transcoding profiles](#add-new-transcoding-profiles)
-  - [Client helpers (themes & plugins)](#client-helpers-themes--plugins)
+  - [Helpers](#helpers)
+  - [Client API (themes & plugins)](#client-api-themes--plugins)
     - [Plugin static route](#plugin-static-route)
     - [Notifier](#notifier)
     - [Markdown Renderer](#markdown-renderer)
@@ -24,6 +25,7 @@
     - [Get public settings](#get-public-settings)
     - [Get server config](#get-server-config)
     - [Add custom fields to video form](#add-custom-fields-to-video-form)
+    - [Register settings script](#register-settings-script)
   - [Publishing](#publishing)
 - [Write a plugin/theme](#write-a-plugintheme)
   - [Clone the quickstart repository](#clone-the-quickstart-repository)
@@ -154,20 +156,23 @@ body#custom-css {
 }
 ```
 
-### Server helpers (only for plugins)
+### Server API (only for plugins)
 
 #### Settings
 
 Plugins can register settings, that PeerTube will inject in the administration interface.
+The following fields will be automatically translated using the plugin translation files: `label`, `html`, `descriptionHTML`, `options.label`.
+**These fields are injected in the plugin settings page as HTML, so pay attention to your translation files.**
 
 Example:
 
 ```js
+function register (...) {
   registerSetting({
     name: 'admin-name',
     label: 'Admin name',
     type: 'input',
-  // type: input | input-checkbox | input-password | input-textarea | markdown-text | markdown-enhanced
+    // type: input | input-checkbox | input-password | input-textarea | markdown-text | markdown-enhanced | 'select' | 'html'
     default: 'my super name'
   })
 
@@ -179,6 +184,7 @@ result['admin-name]
   settingsManager.onSettingsChange(settings => {
     settings['admin-name])
   })
+}
 ```
 
 #### Storage
@@ -188,8 +194,10 @@ Plugins can store/load JSON data, that PeerTube will store in its database (so d
 Example:
 
 ```js
+function register (...) {
   const value = await storageManager.getData('mykey')
   await storageManager.storeData('mykey', { subkey: 'value' })
+}
 ```
 
 #### Update video constants
@@ -197,6 +205,7 @@ await storageManager.storeData('mykey', { subkey: 'value' })
 You can add/delete video categories, licences or languages using the appropriate managers:
 
 ```js
+function register (...) {
   videoLanguageManager.addLanguage('al_bhed', 'Al Bhed')
   videoLanguageManager.deleteLanguage('fr')
 
@@ -208,6 +217,7 @@ videoLicenceManager.deleteLicence(7) // Public domain
 
   videoPrivacyManager.deletePrivacy(2) // Remove Unlisted video privacy
   playlistPrivacyManager.deletePlaylistPrivacy(3) // Remove Private video playlist privacy
+}
 ```
 
 #### Add custom routes
@@ -215,8 +225,10 @@ playlistPrivacyManager.deletePlaylistPrivacy(3) // Remove Private video playlist
 You can create custom routes using an [express Router](https://expressjs.com/en/4x/api.html#router) for your plugin:
 
 ```js
+function register (...) {
   const router = getRouter()
   router.get('/ping', (req, res) => res.json({ message: 'pong' }))
+}
 ```
 
 The `ping` route can be accessed using:
@@ -229,6 +241,8 @@ The `ping` route can be accessed using:
 If you want to add a classic username/email and password auth method (like [LDAP](https://framagit.org/framasoft/peertube/official-plugins/-/tree/master/peertube-plugin-auth-ldap) for example):
 
 ```js
+function register (...) {
+
   registerIdAndPassAuth({
     authName: 'my-auth-method',
 
@@ -265,11 +279,14 @@ registerIdAndPassAuth({
 
   // Unregister this auth method
   unregisterIdAndPassAuth('my-auth-method')
+}
 ```
 
 You can also add an external auth method (like [OpenID](https://framagit.org/framasoft/peertube/official-plugins/-/tree/master/peertube-plugin-auth-openid-connect), [SAML2](https://framagit.org/framasoft/peertube/official-plugins/-/tree/master/peertube-plugin-auth-saml2) etc):
 
 ```js
+function register (...) {
+
   // result contains the userAuthenticated auth method you can call to authenticate a user
   const result = registerExternalAuth({
     authName: 'my-auth-method',
@@ -303,6 +320,7 @@ router.use('/external-auth-callback', (req, res) => {
 
   // Unregister this external auth method
   unregisterExternalAuth('my-auth-method)
+}
 ```
 
 #### Add new transcoding profiles
@@ -393,15 +411,41 @@ async function register ({
   }
 ```
 
-### Client helpers (themes & plugins)
+### Helpers
+
+PeerTube provides your plugin some helpers. For example:
+
+```js
+async function register ({
+  peertubeHelpers
+}) {
+  // Block a server
+  {
+    const serverActor = await peertubeHelpers.server.getServerActor()
+
+    await peertubeHelpers.moderation.blockServer({ byAccountId: serverActor.Account.id, hostToBlock: '...' })
+  }
+
+  // Load a video
+  {
+    const video = await peertubeHelpers.videos.loadByUrl('...')
+  }
+}
+```
+
+See the [plugin API reference](https://docs.joinpeertube.org/api-plugins) to see the complete helpers list.
+
+### Client API (themes & plugins)
 
 #### Plugin static route
 
 To get your plugin static route:
 
 ```js
+function register (...) {
   const baseStaticUrl = peertubeHelpers.getBaseStaticRoute()
   const imageUrl = baseStaticUrl + '/images/chocobo.png'
+}
 ```
 
 #### Notifier
@@ -409,9 +453,11 @@ const imageUrl = baseStaticUrl + '/images/chocobo.png'
 To notify the user with the PeerTube ToastModule:
 
 ```js
+function register (...) {
   const { notifier } = peertubeHelpers
   notifier.success('Success message content.')
   notifier.error('Error message content.')
+}
 ```
 
 #### Markdown Renderer
@@ -419,6 +465,7 @@ notifier.error('Error message content.')
 To render a formatted markdown text to HTML:
 
 ```js
+function register (...) {
   const { markdownRenderer } = peertubeHelpers
 
   await markdownRenderer.textMarkdownToHTML('**My Bold Text**')
@@ -426,6 +473,7 @@ await markdownRenderer.textMarkdownToHTML('**My Bold Text**')
 
   await markdownRenderer.enhancedMarkdownToHTML('![alt-img](http://.../my-image.jpg)')
   // return <img alt=alt-img src=http://.../my-image.jpg />
+}
 ```
 
 #### Custom Modal
@@ -433,6 +481,7 @@ await markdownRenderer.enhancedMarkdownToHTML('![alt-img](http://.../my-image.jp
 To show a custom modal:
 
 ```js
+function register (...) {
   peertubeHelpers.showModal({
     title: 'My custom modal title',
     content: '<p>My custom modal content</p>',
@@ -444,6 +493,7 @@ To show a custom modal:
     // show confirm button and call action() after hiding modal
     confirm: { value: 'confirm', action: () => {} },
   })
+}
 ```
 
 #### Translate
@@ -451,8 +501,10 @@ To show a custom modal:
 You can translate some strings of your plugin (PeerTube will use your `translations` object of your `package.json` file):
 
 ```js
+function register (...) {
   peertubeHelpers.translate('User name')
     .then(translation => console.log('Translated User name by ' + translation))
+}
 ```
 
 #### Get public settings
@@ -460,6 +512,7 @@ peertubeHelpers.translate('User name')
 To get your public plugin settings:
 
 ```js
+function register (...) {
   peertubeHelpers.getSettings()
     .then(s => {
       if (!s || !s['site-id'] || !s['url']) {
@@ -469,15 +522,18 @@ peertubeHelpers.getSettings()
 
       // ...
     })
+}
 ```
 
 #### Get server config
 
 ```js
+function register (...) {
   peertubeHelpers.getServerConfig()
     .then(config => {
       console.log('Fetched server config.', config)
     })
+}
 ```
 
 #### Add custom fields to video form
@@ -540,6 +596,26 @@ async function register ({
   })
 }
 ```
+
+#### Register settings script
+
+To hide some fields in your settings plugin page depending on the form state:
+
+```js
+async function register ({ registerSettingsScript }) {
+  registerSettingsScript({
+    isSettingHidden: options => {
+      if (options.setting.name === 'my-setting' && options.formValues['field45'] === '2') {
+        return true
+      }
+
+      return false
+    }
+  })
+}
+```
+
+
 ### Publishing
 
 PeerTube plugins and themes should be published on [NPM](https://www.npmjs.com/) so that PeerTube indexes