WhatsApp Bot: Custom Welcome Message on Group Join - Aris's Arrival

This code implements a custom welcome message for a WhatsApp bot when a specific user joins a group. It leverages the 'before' function in the WhatsApp Bot SDK to execute the logic.

Code Breakdown

The code snippet is written in JavaScript and utilizes the 'before' function from the WhatsApp Bot SDK. The 'before' function is executed before any message is processed by the bot.

1. Initial Setup:

   • The code defines a variable conn.danil_join that stores a state indicating whether 'Aris' has joined the group and the timestamp of the last join event. If the variable is undefined, it's initialized with the default state of join: false and time: 0.

2. Group Join Check:

   • The code checks if the message is in a group and if the last join time of 'Aris' is not greater than the current time. This ensures that the welcome message is only sent once after 'Aris' joins the group.

3. Welcome Message Logic:

   • If the message sender is 'Aris' (m.sender === '62895423189239@s.whatsapp.net'), the following actions are performed:
     • A welcome message is sent to the group chat using the conn.sendMessage function. This message includes a personalized welcome for 'Aris'.
     • The conn.danil_join state is updated to reflect the latest join event. The join property is set to true, and the time property is set to the current time plus 2 seconds.

Example Usage

The code can be integrated into your WhatsApp bot by placing it within the 'before' function handler. When a group message is received, the bot will check if the sender is 'Aris'. If it is, the welcome message will be sent to the group chat.

Conclusion

This code snippet demonstrates a basic implementation of a custom welcome message for a WhatsApp bot. You can modify and expand upon this example to create more personalized and sophisticated welcome messages for your bot.