Automatically "react" to your own messages in Slack.

autoreoji.js

/**
 *
 * Think you're something special? Automatically "react"
 * to your own Slack messages.
 * 
 * Example:
 * autoReact('crab') // automatically react with the crab emoji
 *
 * Related: http://slackhq.com/post/123561085920/reactions
 *
**/

function autoReact(emoji) {
  if (!TS.emoji.isValidName(emoji)) {
    throw new Error(emoji + ' is not a valid emoji');
  };
  
  TS.channels.message_received_sig.add(function (channel, msg) {
    var id, rxn = {};

    id = TS.model.user.id;
    if (!msg._rxn_key || msg.type !== 'message' || msg.user !== id) {
      return; // iduncare
    };

    rxn.name = emoji;

    if (msg.subtype === 'file_share') {
      rxn.file = msg.file.id;
    } else {
      rxn.channel = channel.id;
      rxn.timestamp = msg.ts;
    }
    
    TS.api.call('reactions.add', rxn, function (ok, resp) {
      if (!ok) {
        console.error(resp.error || 'could not add reaction');
      }
    });
  });
}

Would you be able to write something similar that automatically attaches a certain emoji to all posts in a channel?

+1 to what charlieswoop said!

+1 to what @charlieswoop said!

+1 to what @charlieswoop said!