How do I get the user name/id that called the bot?

[kubiaki]

I need to get the name/id of the user who called the bot. How do I get this information?

Cheers.

[kubiaki]

I know that we have two options, as below, but I would like to understand how to use those options:

getUserId(name) (return: promise) - gets user ID by name
getUser(name) (return: promise) - gets user by name

Please, help.

[tnynyn]

you can get the user info from bot.on("message",function(data), data will contain all the users info when that users sends a message to the bot:

bot.on("message",function(data) {
if (data.type !== "message" || data.subtype === "bot_message" ){
console.log(data);
return;
}
})

[a007mr]

I can't get user_name also. How to get this information?

My code:

bot.on('message', data => {
  if (data.type !== 'message' || data.subtype === 'bot_message') {
    return;
  }

  handleMessage(data);
});

function handleMessage(data) {
  let user = data.user;     // I tried also user data.client_msg_id
  console.log(`user`, user);    // it shows somethings like `user UP23WKQXX`
  let message = data.text;

  if (message.includes(' help')) {
    runHelp(user);
  }
}

function runHelp(user) {
  bot.postMessageToUser(user, `message`);
}

bot.postMessageToUser(user, message) doesn't work. It gives error Assertion failed: user not found.

How to get user name?

[VitamineC]

@a007mr
I have found solution, probably.
Call bot.postMessage(CHANNEL_ID,message), where CHANNEL_ID is channel from data object.