Facebook messenger bot

ShoutCast

Fb messenger bot needs facebook page on behalf which will be communicating.

So its important to create new Facebook page.

After logging into facebook, head over to:

https://www.facebook.com/pages/create/

After creating page, u can get Page ID from URL, for example:

https://www.facebook.com/Test-1796766873669723/ ⇒ 1796766873669723 (will need this later on)

Alternative way to obtain Page ID is described here https://www.facebook.com/help/community/question/?id=378910098941520

After page creation it's essential to create facebook App and connect it to Page.

U need to login again as a facebook developer and Create new App

https://developers.facebook.com/apps

Afted App creation head to Messenger section https://developers.facebook.com/apps/xxx/messenger/settings/

Select Page from dropdown and generate Token (will be used later)

Select a page to subscribe

Next step is to setup webhooks

• Callback URL ⇒ wordpress endpoint ⇒ https://skoda-wlc.ys-dev.cz/wide/wp-json/fb-msg/webhook
• Verify Token ⇒ write random string (will be used later)
• Subscriptions Fields ⇒ check „messages“ and „messaging_optins“

Now it's time to setup Wordpress facebook messenger by section „Setup credentials in wordpress“. After All is set up, return here and click Verify and Save to finalize setup.

At first fb messenger bot will be in development mode - only administrator of facebook App will see plugin and be able to optin for notifications - for testing purposes. After development stage is over its essential to submit App for revision to Facebook to enable it for public use.

First step is to enable „YS facebook messenger API“ plugin in Plugins ⇒ Installed Plugins.

Then head over to Social Networks ⇒ Facebook tab ⇒ FB mesenger optin plugin. You should have all fields gathered from previous sections.

• App ID ⇒ ID of created app in facebook developers console
• Page ID ⇒ ID of facebook page on which behalf bot will communicate. Obtaining is described in first section of this manual
• Verify Token ⇒ string set up to validate wordpress API in facebook developers console
• Page Access Token ⇒ token generated in facebook developers console
• Send from all categories ⇒ check to send notifications from all published posts. Otherwise only notifications from particular category new posts will be sent

FB messenger bot plugin needs to be inserted into page, to display optin button for users on frontend.

In visual editor use shortcode plugin button

Or in texteditor shorcode:

[fb-msg-optin msg=„Optin for notification!“]

msg ⇒ This message displayed on fronend above optin fb button

When publishing new post (or updating older one, which was not notified by FB messenger bot) check „Send one-time publish notification“ option.

After publishing/updating, all users opted for selected main category will be notified. In case that wordpress doesn't include „main category“ function, notifications will be sent to all assigned post categories.

Notifications for each post will by sent only once.