[WhatsApp, Telegram] Channel Label

[KrzysztofMadejski]

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

Example image of the message relayed from WhatsApp to Slack:

Channel in case of WhatsApp and Telegram is a complex unique ID string, which doesn't look great when visualized.

I'm using a RemoteNickFormat="[{LABEL} #{CHANNEL}] @{NICK}" which results in [CfP #48111222333-1549986983@g.us] @Virus APP [10:45 AM] being shown as sender.

Problem is that

1. it looks bad, and
2. in case of WhatsApp, it reveals the creator's of the group phone number.

Describe the solution you'd like

What I'd love to have is an ability to set a channel label that would be used by {CHANNEL} instead of channel id when set.

Example config:

    [[gateway.inout]]
    account="whatsapp.cfall"
    channel="48111222333-1549986983@g.us"
    channelLabel = "Code for Pakistan"

That would result in above RemoteNickFormat to be formatted as [CfP #Code for Pakistan] @Virus APP [10:45 AM].

Describe alternatives you've considered
Not using {CHANNEL} in a RemoteNickFormat.

Additional context
The idea was born while implementing WhatsApp, see #711.

[qaisjp]

The CHANNEL could probably just be the name of the WhatsApp group instead?

[KrzysztofMadejski]

I don't think so. Group names are not unique in WhatsApp so we need unique channel ID.

[42wim]

@KrzysztofMadejski can you take a look at #793
This allows your own scripting for the RemoteNickFormat and could solve this issue.

[42wim]

Can be fixed using tengo

Save below as myremotenickformat.tengo

if channel == "48111222333-1549986983@g.us" {
        result = "[CfP #Code for Pakistan] @"+nick
}

Add RemoteNickFormat="{TENGO}" to the specific bridge

and add the following in matterbridge.toml

[tengo]
RemoteNickFormat="myremotenickformat.tengo"

[ilmaisin]

What is that tengo thing? Could there be a some sort of step-by-step instruction on how to extract the channel number?