Outgoing webhooks at each addition/modification/deletion of a Bazar item.

Put this repository inside the /tools/webhooks directory of YesWiki.

Go to the BazaR main page, at the bottom you have a Webhooks section.

• On the left you have a dropdown menu to select the format: Raw, Mattermost, Slack
• In the middle, you have a dropdown menu to select for which Bazar items the webhooks will be called. By default, the webhooks will be called on the addition/modification/deletion of all Bazar items.
• On the right you must enter the URL of the webhook to call

Every time you click on Update, a new row will be added. If you wish to delete a webhook, just use a blank URL and it will be removed on update.

To integrate the webhook with a Mattermost chatroom, follow this guideline:

• Log into your Mattermost chatroom as an admin
• On the main menu, click on "Integration" (you only see it if you're an admin)
• Choose "Incoming webhooks"
• Create a webhook with the configurations you wish to use
• On the YesWiki BazaR page, choose "Mattermost" and copy the URL provided by Mattermost

You can define webhooks_bot_name and webhooks_bot_icon in wakka.config.php if you want to change the look of the bot which will post on Mattermost (you must allow this in the Mattermost configurations).

To let Slack handle an incoming webhook, follow the guide here.

On the YesWiki BazaR page, choose "Slack" and copy the URL provided by Slack.

If you choose the "Raw" format, all informations about the given Bazar item will be POSTed to the given URLs in a JSON format.

The data will be sent formatted like this:

• action: action type (add/edit/delete)
• user: name of the user who performed the action
• text: formatted text describing the action done (this is what is sent to Mattermost/Slack)
• data_type: for now the value will be always "bazar". In the future we may support regular pages.
• bazar_form_id: the ID of the Bazar item
• data: all the data of the Bazar item

The ActivityPub format only works if the Bazar objects are semantically defined. Please see the documentation (in French) to know how to do that. You must use https://www.w3.org/ns/activitystreams as the main context, but other contexts can be added as well.

The data will be formatted like this:

{
  "@context": "https://www.w3.org/ns/activitystreams",
  "type":"Create",
  "to": [
    "http://localhost/?WikiAdmin/followers",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "actor": "http://localhost/?WikiAdmin",
  "object": { 
    "id": "http://localhost/?MyComment",
    "type": "Note",
    "attributedTo": "http://localhost/?WikiAdmin",
    "to": [
      "http://localhost/?WikiAdmin/followers",
      "https://www.w3.org/ns/activitystreams#Public"
    ],
    "title":"My comment",
    "content":"Thank you for reading my comment",
    "published":"2019-10-21T14:56:32Z",
    "updated":"2019-10-21T14:56:32Z"
  }
}

For the Delete activity, only the object URI is sent.

The published and updated fields are set automatically, unless you mark a field explicitely with this context.

By default, the actor posting the activity will be the logged-in user. You can also mark a field with the context https://www.w3.org/ns/activitystreams#author to override this value.

You can set two parameters in the wakka.config.php file :

• webhooks_activitypub_default_actor: The URL you associate with this parameter will be used as an actor for all ActivityPub activities.

• webhooks_activitypub_actors_base_url: The base URL to use for all actors. For example if you use https://activitypub.server/actor/, then the URI of user WikiAdmin will be https://activitypub.server/actor/WikiAdmin instead of http://localhost/?WikiAdmin.

If you wish to see the data returned by the webhook, you can use the URL of the test incoming webhook: http://YOUR_URL/?BazaR&vue=test-webhook. All data POSTed to this URL will be inserted into the yeswiki_triples table.