Alerter: add Telegram alerter

[ManofWax]

Create a new alerter integrating with Telegram API.

Steps:

• Before starting the development comment on this issue to propose an implementation and what Telegram API you would like to use
• Create a new alert class in https://github.com/certego/BuffaLogs/tree/main/buffalogs/impossible_travel/alerting
• Adding the needed configuration on: https://github.com/certego/BuffaLogs/blob/main/config/buffalogs/alerting.json
• Write tests

[drona-gyawali]

Hi @ManofWax, I propose implementing the Telegram Bot API (sendMessage method) for alerting .

Why Telegram Bot API?

1. Simple bot-based integration: Easy to set up and manage via BotFather.
2. Text formatting support: Supports Markdown/HTML for better readability.
3. HTTP POST requests: Lightweight and easy to implement.

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Implementation Steps

1. Create a new TelegramAlerter class:

   • Inherit from BaseAlerter.
   • Use requests.post to send alerts via the sendMessage endpoint.
   • Add error handling for API failures.

2. Update alerting.json:

   • Add Telegram-specific configuration:

3. Write tests:

   • Mock requests.post to test success/failure scenarios.

[ManofWax]

Ok seems good to me.

In addition to the steps on the issue, can you also add end user documentation on how to configure the bot and set up the alerte in a new file calle telegram.md here? https://github.com/certego/BuffaLogs/tree/main/docs/alerting

[drona-gyawali]

Understood! I will include the documentation in docs/alerting/telegram.md, detailing the bot configuration and alerter setup to ensure seamless integration.