Section Telegram (basic)

[telegram.mytelegram]
#See https://core.telegram.org/bots#6-botfather 
#and https://www.linkedin.com/pulse/telegram-bots-beginners-marco-frau
Token="Yourtokenhere"
RemoteNickFormat="({PROTOCOL}) <{NICK}>"
MessageFormat="HTMLNick"

Retrieving your chat number from Matterbridge

Setup

Matterbridge can output your chat number as debug information. Here's how.

• Bring up a bot as described above and retrieve your API token.
• Make sure to disable privacy mode on the bot.
• Configure Matterbridge as illustrated above
• Join the bot to your Telegram group

Generate events / output

• Start Matterbridge with your new configuration in debug mode like so: matterbridge -debug -conf matterbridge.toml
• Create traffic in your group, chat up your bot.
• Matterbridge will output debug information, this will look similar to this

  [0009] DEBUG telegram:     <= Message is config.Message{Text:"test from telegram", Channel:"-987654321", Username:"John Doe", UserID:"123456789", Avatar:"", Account:"telegram.mytelegram", Event:"", Protocol:"", Gateway:"", Timestamp:time.Time{wall:0x0, ext:> 0, loc:(*time.Location)(nil)}, ID:"31", Extra:map[string][]interface {}{}}
  

  or

  [0024] DEBUG telegram:     => Receiving config.Message{Text:"test from xmpp", Channel:"-987654321", Username:"[xmpp] <userredacted> ", UserID:"[email protected]/userredacted", Avatar:"", Account:"xmpp.myxmpp", Event:"", Protocol:"", Gateway:"gateway1", Timestamp:time.Time{wall:0xbeed3ca55451a133, ext:24805708196, loc:(*time.Location)(0x55cad0c84140)}, ID:"", Extra:map[string][]interface {}(nil)}
  

• The large negative number in behind Channel: is your channel number. Go configure the Matterbridge gateway section with it.

Note: for you to view messages from the channel in the matterbridge output, you need to adjust privacy settings for your bot or give your bot admin privilages in your channel.

Sequence within a BotFather chat:

You: /setprivacy

BotFather: Choose a bot to change group messages settings.

You: @your_name_bot

BotFather: 'Enable' - your bot will only receive messages that either start with the '/' symbol or mention the bot by username.

• 'Disable' - your bot will receive all messages that people send to groups.
• Current status is: ENABLED

You: Disable

BotFather: Success! The new status is: DISABLED. /help

(copied from this stack overflow answer)