aboutsummaryrefslogtreecommitdiffhomepage
path: root/support/doc/plugins/guide.md
blob: 26fcb8987793c826b988901991ed0646161c534b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
# Plugins & Themes

<!-- START doctoc generated TOC please keep comment here to allow auto update -->
<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->

- [Concepts](#concepts)
  - [Hooks](#hooks)
  - [Static files](#static-files)
  - [CSS](#css)
  - [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)
    - [Server helpers](#server-helpers)
  - [Client API (themes & plugins)](#client-api-themes--plugins)
    - [Plugin static route](#plugin-static-route)
    - [Notifier](#notifier)
    - [Markdown Renderer](#markdown-renderer)
    - [Auth header](#auth-header)
    - [Plugin router route](#plugin-router-route)
    - [Custom Modal](#custom-modal)
    - [Translate](#translate)
    - [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)
    - [Plugin selector on HTML elements](#plugin-selector-on-html-elements)
    - [HTML placeholder elements](#html-placeholder-elements)
    - [Add/remove left menu links](#addremove-left-menu-links)
  - [Publishing](#publishing)
- [Write a plugin/theme](#write-a-plugintheme)
  - [Clone the quickstart repository](#clone-the-quickstart-repository)
  - [Configure your repository](#configure-your-repository)
  - [Update README](#update-readme)
  - [Update package.json](#update-packagejson)
  - [Write code](#write-code)
  - [Add translations](#add-translations)
  - [Build your plugin](#build-your-plugin)
  - [Test your plugin/theme](#test-your-plugintheme)
  - [Publish](#publish)
  - [Unpublish](#unpublish)
- [Plugin & Theme hooks/helpers API](#plugin--theme-hookshelpers-api)
- [Tips](#tips)
  - [Compatibility with PeerTube](#compatibility-with-peertube)
  - [Spam/moderation plugin](#spammoderation-plugin)
  - [Other plugin examples](#other-plugin-examples)

<!-- END doctoc generated TOC please keep comment here to allow auto update -->

## Concepts

Themes are exactly the same as plugins, except that:
 * Their name starts with `peertube-theme-` instead of `peertube-plugin-`
 * They cannot declare server code (so they cannot register server hooks or settings)
 * CSS files are loaded by client only if the theme is chosen by the administrator or the user

### Hooks

A plugin registers functions in JavaScript to execute when PeerTube (server and client) fires events. There are 3 types of hooks:
 * `filter`: used to filter functions parameters or return values.
 For example to replace words in video comments, or change the videos list behaviour
 * `action`: used to do something after a certain trigger. For example to send a hook every time a video is published
 * `static`: same than `action` but PeerTube waits their execution

On server side, these hooks are registered by the `library` file defined in `package.json`.

```json
{
  ...,
  "library": "./main.js",
  ...,
}
```

And `main.js` defines a `register` function:

Example:

```js
async function register ({
  registerHook,

  registerSetting,
  settingsManager,

  storageManager,

  videoCategoryManager,
  videoLicenceManager,
  videoLanguageManager,

  peertubeHelpers,

  getRouter,

  registerExternalAuth,
  unregisterExternalAuth,
  registerIdAndPassAuth,
  unregisterIdAndPassAuth
}) {
  registerHook({
    target: 'action:application.listening',
    handler: () => displayHelloWorld()
  })
}
```

Hooks prefixed by `action:api` also give access the original **express** [Request](http://expressjs.com/en/api.html#req) and [Response](http://expressjs.com/en/api.html#res):

```js
async function register ({
  registerHook,
  peertubeHelpers: { logger }
}) {
  registerHook({
    target: 'action:api.video.updated',
    handler: ({ req, res }) => logger.debug('original request parameters', { params: req.params })
  })
}
```


On client side, these hooks are registered by the `clientScripts` files defined in `package.json`.
All client scripts have scopes so PeerTube client only loads scripts it needs:

```json
{
  ...,
  "clientScripts": [
    {
      "script": "client/common-client-plugin.js",
      "scopes": [ "common" ]
    },
    {
      "script": "client/video-watch-client-plugin.js",
      "scopes": [ "video-watch" ]
    }
  ],
  ...
}
```

And these scripts also define a `register` function:

```js
function register ({ registerHook, peertubeHelpers }) {
  registerHook({
    target: 'action:application.init',
    handler: () => onApplicationInit(peertubeHelpers)
  })
}
```

### Static files

Plugins can declare static directories that PeerTube will serve (images for example)
from `/plugins/{plugin-name}/{plugin-version}/static/`
or `/themes/{theme-name}/{theme-version}/static/` routes.

### CSS

Plugins can declare CSS files that PeerTube will automatically inject in the client.
If you need to override existing style, you can use the `#custom-css` selector:

```
body#custom-css {
  color: red;
}

#custom-css .header {
  background-color: red;
}
```

### 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' | 'select' | 'html'

    // If type: 'select', give the select available options
    options: [
      { label: 'Label 1', value: 'value1' },
      { label: 'Label 2', value: 'value2' }
    ],

    // If type: 'html', set the HTML that will be injected in the page
    html: '<strong class="...">Hello</strong><br /><br />'

    // Optional
    descriptionHTML: 'The purpose of this field is...',

    default: 'my super name',

    // If the setting is not private, anyone can view its value (client code included)
    // If the setting is private, only server-side hooks can access it
    private: false
  })

  const adminName = await settingsManager.getSetting('admin-name')

  const result = await settingsManager.getSettings([ 'admin-name', 'admin-password' ])
  result['admin-name]

  settingsManager.onSettingsChange(settings => {
    settings['admin-name']
  })
}
```

#### Storage

Plugins can store/load JSON data, that PeerTube will store in its database (so don't put files in there).

Example:

```js
function register ({
  storageManager
}) {
  const value = await storageManager.getData('mykey')
  await storageManager.storeData('mykey', { subkey: 'value' })
}
```

You can also store files in the plugin data directory (`/{plugins-directory}/data/{npm-plugin-name}`) **in PeerTube >= 3.2**.
This directory and its content won't be deleted when your plugin is uninstalled/upgraded.

```js
function register ({
  storageManager,
  peertubeHelpers
}) {
  const basePath = peertubeHelpers.plugin.getDataDirectoryPath()

  fs.writeFile(path.join(basePath, 'filename.txt'), 'content of my file', function (err) {
    ...
  })
}
```

#### Update video constants

You can add/delete video categories, licences or languages using the appropriate constant managers:

```js
function register ({
  videoLanguageManager,
  videoCategoryManager,
  videoLicenceManager,
  videoPrivacyManager,
  playlistPrivacyManager
}) {
  videoLanguageManager.addConstant('al_bhed', 'Al Bhed')
  videoLanguageManager.deleteConstant('fr')

  videoCategoryManager.addConstant(42, 'Best category')
  videoCategoryManager.deleteConstant(1) // Music
  videoCategoryManager.resetConstants() // Reset to initial categories
  videoCategoryManager.getConstants() // Retrieve all category constants

  videoLicenceManager.addConstant(42, 'Best licence')
  videoLicenceManager.deleteConstant(7) // Public domain

  videoPrivacyManager.deleteConstant(2) // Remove Unlisted video privacy
  playlistPrivacyManager.deleteConstant(3) // Remove Private video playlist privacy
}
```

#### Add custom routes

You can create custom routes using an [express Router](https://expressjs.com/en/4x/api.html#router) for your plugin:

```js
function register ({
  router
}) {
  const router = getRouter()
  router.get('/ping', (req, res) => res.json({ message: 'pong' }))

  // Users are automatically authenticated
  router.get('/auth', async (res, res) => {
    const user = await peertubeHelpers.user.getAuthUser(res)

    const isAdmin = user.role === 0
    const isModerator = user.role === 1
    const isUser = user.role === 2

    res.json({
      username: user.username,
      isAdmin,
      isModerator,
      isUser
    })
  })
}
```

The `ping` route can be accessed using:
 * `/plugins/:pluginName/:pluginVersion/router/ping`
 * Or `/plugins/:pluginName/router/ping`


#### Add external auth methods

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',

    // PeerTube will try all id and pass plugins in the weight DESC order
    // Exposing this value in the plugin settings could be interesting
    getWeight: () => 60,

    // Optional function called by PeerTube when the user clicked on the logout button
    onLogout: user => {
      console.log('User %s logged out.', user.username')
    },

    // Optional function called by PeerTube when the access token or refresh token are generated/refreshed
    hookTokenValidity: ({ token, type }) => {
      if (type === 'access') return { valid: true }
      if (type === 'refresh') return { valid: false }
    },

    // Used by PeerTube when the user tries to authenticate
    login: ({ id, password }) => {
      if (id === 'user' && password === 'super password') {
        return {
          username: 'user'
          email: 'user@example.com'
          role: 2
          displayName: 'User display name'
        }
      }

      // Auth failed
      return null
    }
  })

  // 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',

    // Will be displayed in a button next to the login form
    authDisplayName: () => 'Auth method'

    // If the user click on the auth button, PeerTube will forward the request in this function
    onAuthRequest: (req, res) => {
      res.redirect('https://external-auth.example.com/auth')
    },

    // Same than registerIdAndPassAuth option
    // onLogout: ...

    // Same than registerIdAndPassAuth option
    // hookTokenValidity: ...
  })

  router.use('/external-auth-callback', (req, res) => {
    // Forward the request to PeerTube
    result.userAuthenticated({
      req,
      res,
      username: 'user'
      email: 'user@example.com'
      role: 2
      displayName: 'User display name'
    })
  })

  // Unregister this external auth method
  unregisterExternalAuth('my-auth-method)
}
```

#### Add new transcoding profiles

Adding transcoding profiles allow admins to change ffmpeg encoding parameters and/or encoders.
A transcoding profile has to be chosen by the admin of the instance using the admin configuration.

```js
async function register ({
  transcodingManager
}) {

  // Adapt bitrate when using libx264 encoder
  {
    const builder = (options) => {
      const { input, resolution, fps, streamNum } = options

      const streamString = streamNum ? ':' + streamNum : ''

      // You can also return a promise
      // All these options are optional
      return {
        scaleFilter: {
          // Used to define an alternative scale filter, needed by some encoders
          // Default to 'scale'
          name: 'scale_vaapi'
        },
        // Default to []
        inputOptions: [],
        // Default to []
        outputOptions: [
        // Use a custom bitrate
          '-b' + streamString + ' 10K'
        ]
      }
    }

    const encoder = 'libx264'
    const profileName = 'low-quality'

    // Support this profile for VOD transcoding
    transcodingManager.addVODProfile(encoder, profileName, builder)

    // And/Or support this profile for live transcoding
    transcodingManager.addLiveProfile(encoder, profileName, builder)
  }

  {
    const builder = (options) => {
      const { streamNum } = options

      const streamString = streamNum ? ':' + streamNum : ''

      // Always copy stream when PeerTube use libfdk_aac or aac encoders
      return {
        copy: true
      }
    }

    const profileName = 'copy-audio'

    for (const encoder of [ 'libfdk_aac', 'aac' ]) {
      transcodingManager.addVODProfile(encoder, profileName, builder)
    }
  }
```

PeerTube will try different encoders depending on their priority.
If the encoder is not available in the current transcoding profile or in ffmpeg, it tries the next one.
Plugins can change the order of these encoders and add their custom encoders:

```js
async function register ({
  transcodingManager
}) {

  // Adapt bitrate when using libx264 encoder
  {
    const builder = () => {
      return {
        inputOptions: [],
        outputOptions: []
      }
    }

    // Support libopus and libvpx-vp9 encoders (these codecs could be incompatible with the player)
    transcodingManager.addVODProfile('libopus', 'test-vod-profile', builder)

    // Default priorities are ~100
    // Lowest priority = 1
    transcodingManager.addVODEncoderPriority('audio', 'libopus', 1000)

    transcodingManager.addVODProfile('libvpx-vp9', 'test-vod-profile', builder)
    transcodingManager.addVODEncoderPriority('video', 'libvpx-vp9', 1000)

    transcodingManager.addLiveProfile('libopus', 'test-live-profile', builder)
    transcodingManager.addLiveEncoderPriority('audio', 'libopus', 1000)
  }
```

During live transcode input options are applied once for each target resolution.
Plugins are responsible for detecting such situation and applying input options only once if necessary.

#### Server 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

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

To render a formatted markdown text to HTML:

```js
function register (...) {
  const { markdownRenderer } = peertubeHelpers

  await markdownRenderer.textMarkdownToHTML('**My Bold Text**')
  // return <strong>My Bold Text</strong>

  await markdownRenderer.enhancedMarkdownToHTML('![alt-img](http://.../my-image.jpg)')
  // return <img alt=alt-img src=http://.../my-image.jpg />
}
```

#### Auth header

**PeerTube >= 3.2**

To make your own HTTP requests using the current authenticated user, use an helper to automatically set appropriate headers:

```js
function register (...) {
  registerHook({
    target: 'action:auth-user.information-loaded',
    handler: ({ user }) => {

      // Useless because we have the same info in the ({ user }) parameter
      // It's just an example
      fetch('/api/v1/users/me', {
        method: 'GET',
        headers: peertubeHelpers.getAuthHeader()
      }).then(res => res.json())
        .then(data => console.log('Hi %s.', data.username))
    }
  })
}
```

#### Plugin router route

**PeerTube >= 3.3**

To get your plugin router route, you can use `peertubeHelpers.getBaseRouterRoute()`:

```js
function register (...) {
  registerHook({
    target: 'action:video-watch.video.loaded',
    handler: ({ video }) => {
      fetch(peertubeHelpers.getBaseRouterRoute() + '/my/plugin/api', {
        method: 'GET',
        headers: peertubeHelpers.getAuthHeader()
      }).then(res => res.json())
        .then(data => console.log('Hi %s.', data))
    }
  })
}
```

#### Custom Modal

To show a custom modal:

```js
function register (...) {
  peertubeHelpers.showModal({
    title: 'My custom modal title',
    content: '<p>My custom modal content</p>',
    // Optionals parameters :
    // show close icon
    close: true,
    // show cancel button and call action() after hiding modal
    cancel: { value: 'cancel', action: () => {} },
    // show confirm button and call action() after hiding modal
    confirm: { value: 'confirm', action: () => {} },
  })
}
```

#### Translate

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

To get your public plugin settings:

```js
function register (...) {
  peertubeHelpers.getSettings()
    .then(s => {
      if (!s || !s['site-id'] || !s['url']) {
        console.error('Matomo settings are not set.')
        return
      }

      // ...
    })
}
```

#### Get server config

```js
function register (...) {
  peertubeHelpers.getServerConfig()
    .then(config => {
      console.log('Fetched server config.', config)
    })
}
```

#### Add custom fields to video form

To add custom fields in the video form (in *Plugin settings* tab):

```js
async function register ({ registerVideoField, peertubeHelpers }) {
  const descriptionHTML = await peertubeHelpers.translate(descriptionSource)
  const commonOptions = {
    name: 'my-field-name,
    label: 'My added field',
    descriptionHTML: 'Optional description',

    // type: 'input' | 'input-checkbox' | 'input-password' | 'input-textarea' | 'markdown-text' | 'markdown-enhanced' | 'select' | 'html'
    // /!\ 'input-checkbox' could send "false" and "true" strings instead of boolean
    type: 'input-textarea',

    default: '',
    // Optional, to hide a field depending on the current form state
    // liveVideo is in the options object when the user is creating/updating a live
    // videoToUpdate is in the options object when the user is updating a video
    hidden: ({ formValues, videoToUpdate, liveVideo }) => {
      return formValues.pluginData['other-field'] === 'toto'
    }
  }

  for (const type of [ 'upload', 'import-url', 'import-torrent', 'update', 'go-live' ]) {
    registerVideoField(commonOptions, { type })
  }
}
```

PeerTube will send this field value in `body.pluginData['my-field-name']` and fetch it from `video.pluginData['my-field-name']`.

So for example, if you want to store an additional metadata for videos, register the following hooks in **server**:

```js
async function register ({
  registerHook,
  storageManager
}) {
  const fieldName = 'my-field-name'

  // Store data associated to this video
  registerHook({
    target: 'action:api.video.updated',
    handler: ({ video, body }) => {
      if (!body.pluginData) return

      const value = body.pluginData[fieldName]
      if (!value) return

      storageManager.storeData(fieldName + '-' + video.id, value)
    }
  })

  // Add your custom value to the video, so the client autofill your field using the previously stored value
  registerHook({
    target: 'filter:api.video.get.result',
    handler: async (video) => {
      if (!video) return video
      if (!video.pluginData) video.pluginData = {}

      const result = await storageManager.getData(fieldName + '-' + video.id)
      video.pluginData[fieldName] = result

      return video
    }
  })
}
```

#### 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
    }
  })
}
```
#### Plugin selector on HTML elements

PeerTube provides some selectors (using `id` HTML attribute) on important blocks so plugins can easily change their style.

For example `#plugin-selector-login-form` could be used to hide the login form.

See the complete list on https://docs.joinpeertube.org/api-plugins

#### HTML placeholder elements

PeerTube provides some HTML id so plugins can easily insert their own element:

```js
async function register (...) {
  const elem = document.createElement('div')
  elem.className = 'hello-world-h4'
  elem.innerHTML = '<h4>Hello everybody! This is an element next to the player</h4>'

  document.getElementById('plugin-placeholder-player-next').appendChild(elem)
}
```

See the complete list on https://docs.joinpeertube.org/api-plugins

#### Add/remove left menu links

Left menu links can be filtered (add/remove a section or add/remove links) using the `filter:left-menu.links.create.result` client hook.


### Publishing

PeerTube plugins and themes should be published on [NPM](https://www.npmjs.com/) so that PeerTube indexes take into account your plugin (after ~ 1 day). An official plugin index is available on [packages.joinpeertube.org](https://packages.joinpeertube.org/api/v1/plugins), with no interface to present packages.

> The official plugin index source code is available at https://framagit.org/framasoft/peertube/plugin-index

## Write a plugin/theme

Steps:
 * Find a name for your plugin or your theme (must not have spaces, it can only contain lowercase letters and `-`)
 * Add the appropriate prefix:
   * If you develop a plugin, add `peertube-plugin-` prefix to your plugin name (for example: `peertube-plugin-mysupername`)
   * If you develop a theme, add `peertube-theme-` prefix to your theme name (for example: `peertube-theme-mysupertheme`)
 * Clone the quickstart repository
 * Configure your repository
 * Update `README.md`
 * Update `package.json`
 * Register hooks, add CSS and static files
 * Test your plugin/theme with a local PeerTube installation
 * Publish your plugin/theme on NPM

### Clone the quickstart repository

If you develop a plugin, clone the `peertube-plugin-quickstart` repository:

```
$ git clone https://framagit.org/framasoft/peertube/peertube-plugin-quickstart.git peertube-plugin-mysupername
```

If you develop a theme, clone the `peertube-theme-quickstart` repository:

```
$ git clone https://framagit.org/framasoft/peertube/peertube-theme-quickstart.git peertube-theme-mysupername
```

### Configure your repository

Set your repository URL:

```
$ cd peertube-plugin-mysupername # or cd peertube-theme-mysupername
$ git remote set-url origin https://your-git-repo
```

### Update README

Update `README.md` file:

```
$ $EDITOR README.md
```

### Update package.json

Update the `package.json` fields:
   * `name` (should start with `peertube-plugin-` or `peertube-theme-`)
   * `description`
   * `homepage`
   * `author`
   * `bugs`
   * `engine.peertube` (the PeerTube version compatibility, must be `>=x.y.z` and nothing else)

**Caution:** Don't update or remove other keys, or PeerTube will not be able to index/install your plugin.
If you don't need static directories, use an empty `object`:

```json
{
  ...,
  "staticDirs": {},
  ...
}
```

And if you don't need CSS or client script files, use an empty `array`:

```json
{
  ...,
  "css": [],
  "clientScripts": [],
  ...
}
```

### Write code

Now you can register hooks or settings, write CSS and add static directories to your plugin or your theme :)
It's up to you to check the code you write will be compatible with the PeerTube NodeJS version, and will be supported by web browsers.

**JavaScript**

If you want to write modern JavaScript, please use a transpiler like [Babel](https://babeljs.io/).

**Typescript**

If you want to use __Typescript__, you can add __PeerTube__ types as dev dependencies:

```
npm install --save-dev @peertube/peertube-types
```

This package exposes *server* definition files by default:
```ts
import { RegisterServerOptions } from '@peertube/peertube-types'

export async function register ({ registerHook }: RegisterServerOptions) {
  registerHook({
    target: 'action:application.listening',
    handler: () => displayHelloWorld()
  })
}
```

But it also exposes client types and various models used in __PeerTube__:
```ts
import { Video } from '@peertube/peertube-types';
import { RegisterClientOptions } from '@peertube/peertube-types/client';

function register({ registerHook, peertubeHelpers }: RegisterClientOptions) {
  registerHook({
    target: 'action:admin-plugin-settings.init',
    handler: ({ npmName }: { npmName: string }) => {
      if ('peertube-plugin-transcription' !== npmName) {
        return;
      }
    },
  });

  registerHook({
    target: 'action:video-watch.video.loaded',
    handler: ({ video }: { video: Video }) => {
      fetch(`${peertubeHelpers.getBaseRouterRoute()}/videos/${video.uuid}/captions`, {
        method: 'PUT',
        headers: peertubeHelpers.getAuthHeader(),
      }).then((res) => res.json())
        .then((data) => console.log('Hi %s.', data));
    },
  });
}

export { register };
```

### Add translations

If you want to translate strings of your plugin (like labels of your registered settings), create a file and add it to `package.json`:

```json
{
  ...,
  "translations": {
    "fr": "./languages/fr.json",
    "pt-BR": "./languages/pt-BR.json"
  },
  ...
}
```

The key should be one of the locales defined in [i18n.ts](https://github.com/Chocobozzz/PeerTube/blob/develop/shared/models/i18n/i18n.ts).

Translation files are just objects, with the english sentence as the key and the translation as the value.
`fr.json` could contain for example:

```json
{
  "Hello world": "Hello le monde"
}
```

### Build your plugin

If you added client scripts, you'll need to build them using webpack.

Install webpack:

```
$ npm install
```

Add/update your files in the `clientFiles` array of `webpack.config.js`:

```
$ $EDITOR ./webpack.config.js
```

Build your client files:

```
$ npm run build
```

You built files are in the `dist/` directory. Check `package.json` to correctly point to them.


### Test your plugin/theme

You'll need to have a local PeerTube instance:
 * Follow the [dev prerequisites](https://github.com/Chocobozzz/PeerTube/blob/develop/.github/CONTRIBUTING.md#prerequisites)
 (to clone the repository, install dependencies and prepare the database)
 * Build PeerTube (`--light` to only build the english language):

```
$ npm run build -- --light
```

 * Build the CLI:

```
$ npm run setup:cli
```

 * Run PeerTube (you can access to your instance on http://localhost:9000):

```
$ NODE_ENV=test npm start
```

 * Register the instance via the CLI:

```
$ node ./dist/server/tools/peertube.js auth add -u 'http://localhost:9000' -U 'root' --password 'test'
```

Then, you can install or reinstall your local plugin/theme by running:

```
$ node ./dist/server/tools/peertube.js plugins install --path /your/absolute/plugin-or-theme/path
```

### Publish

Go in your plugin/theme directory, and run:

```
$ npm publish
```

Every time you want to publish another version of your plugin/theme, just update the `version` key from the `package.json`
and republish it on NPM. Remember that the PeerTube index will take into account your new plugin/theme version after ~24 hours.

> If you need to force your plugin update on a specific __PeerTube__ instance, you may update the latest available version manually:
> ```sql
> UPDATE "plugin" SET "latestVersion" = 'X.X.X' WHERE "plugin"."name" = 'plugin-shortname';
> ```
> You'll then be able to click the __Update plugin__ button on the plugin list.

### Unpublish

If for a particular reason you don't want to maintain your plugin/theme anymore
you can deprecate it. The plugin index will automatically remove it preventing users to find/install it from the PeerTube admin interface:

```bash
$ npm deprecate peertube-plugin-xxx@"> 0.0.0" "explain here why you deprecate your plugin/theme"
```

## Plugin & Theme hooks/helpers API

See the dedicated documentation: https://docs.joinpeertube.org/api-plugins


## Tips

### Compatibility with PeerTube

Unfortunately, we don't have enough resources to provide hook compatibility between minor releases of PeerTube (for example between `1.2.x` and `1.3.x`).
So please:
  * Don't make assumptions and check every parameter you want to use. For example:

```js
registerHook({
  target: 'filter:api.video.get.result',
  handler: video => {
    // We check the parameter exists and the name field exists too, to avoid exceptions
    if (video && video.name) video.name += ' <3'

    return video
  }
})
```
  * Don't try to require parent PeerTube modules, only use `peertubeHelpers`. If you need another helper or a specific hook, please [create an issue](https://github.com/Chocobozzz/PeerTube/issues/new/choose)
  * Don't use PeerTube dependencies. Use your own :)

If your plugin is broken with a new PeerTube release, update your code and the `peertubeEngine` field of your `package.json` field.
This way, older PeerTube versions will still use your old plugin, and new PeerTube versions will use your updated plugin.

### Spam/moderation plugin

If you want to create an antispam/moderation plugin, you could use the following hooks:
 * `filter:api.video.upload.accept.result`: to accept or not local uploads
 * `filter:api.video-thread.create.accept.result`: to accept or not local thread
 * `filter:api.video-comment-reply.create.accept.result`: to accept or not local replies
 * `filter:api.video-threads.list.result`: to change/hide the text of threads
 * `filter:api.video-thread-comments.list.result`: to change/hide the text of replies
 * `filter:video.auto-blacklist.result`: to automatically blacklist local or remote videos

### Other plugin examples

You can take a look to "official" PeerTube plugins if you want to take inspiration from them: https://framagit.org/framasoft/peertube/official-plugins