Add account linking functionality for order update

[rubycalling]

Is your feature request related to a problem? Please describe.

Currently, when a user request an order update we are mocking the account linking feature instead of actually leveraging it.

Describe the solution you'd like

Trigger the account linking flow in place of the current placeholder in https://github.com/fbsamples/original-coast-clothing/blob/master/services/order.js#L51

Documentation

• https://developers.facebook.com/docs/messenger-platform/identity/account-linking/

[mInzamamMalik]

+1
please add account linking feature in this demo
such as Auth0.com code flow and add in the app in the beginning ideally so the messenger will recognize the user from the day one

[mInzamamMalik]

Problem:

In my case what happening is, it is always saying Account Linking Failed

What I am doing

when I need user to be linked to my app, I send a login button to the user like this:

  http.post(`https://graph.facebook.com/v2.6/me/messages?access_token=${PAGE_ACCESS_TOKEN}`, {
                "recipient": {
                    "id": "2829343507138856"
                },
                "message": {
                    "attachment": {
                        "type": "template",
                        "payload": {
                            "template_type": "button",
                            "text": "Try the log in button!",
                            "buttons": [
                                {
                                    "type": "account_link",
                                    "url": "https://dev-sysborg.auth0.com/authorize?response_type=code&client_id=VYierFrTxMb1Kky3DfPEqUHXaShdmH43"
                                }
                            ]
                        }
                    }
                }
            }).then(() => {
                response.send("ok")
            })

user see this login button like this on their messenger screen:

when user try to login by pressing the button, it pops up a new window and open login screen in that window:

and after entering credentials it redirects to a screen which says Account linking failed,

something like this:

I am sure there is nothing wrong with the Auth0 configuration because it is working fine with postman and connected very well with some other platforms

someone said I must have to subscribe to account linking event so I have subscribed to these three events: messages, messaging_postbacks, messaging_account_linking

I am Stuck at the end of the story,
Please help me out

[jorgeluiso]

Have you whitelisted the domain https://dev-sysborg.auth0.com? Try it an check in the meantime this issue is open and will be closed as soon a we shipped the account linking demo.

here is the devdocs of it but I assume that you already know that.
https://developers.facebook.com/docs/messenger-platform/identity/account-linking/

[mInzamamMalik]

Hi @jorgeluiso

your mentioned document doesnt talk about whitelisting domain, can you please check if you send me correct document link, or may be you can tell me directly how can I whitelist my domain
thanks in advance :-)

[mInzamamMalik]

@jorgeluiso

I have found domain whitelisting inside facebook developer app > setting > advanced setting
but is doesnt help :-(

screenshots:

[jorgeluiso]

Try whitelisting the domain at the page level, on the messenger platform settings of the page.
https://www.facebook.com//settings/?tab=messenger_platform

If that does not work, rest assure that we are going to implement this and close this issue. Alternatively you can implement you own account linking leveraging the extension sdk to get the psid on a webview rendered as an extension. On that webview you can provide a login flow were you then can match your user id with the psid provided by the extension SDK.
https://developers.facebook.com/docs/messenger-platform/guides/chat-extensions/

[mInzamamMalik]

Hi @jorgeluiso,
I visited the page setting and I put the url there in whitelist but still the problem is same
can you please guide me which is the best place where i can ask for support

Thanks,
Malik.

[mInzamamMalik]

do something @jorgeluiso @rubycalling

[mInzamamMalik]

https://stackoverflow.com/questions/56695996/trouble-in-facebook-messenger-account-linking-process