Simple to-do example

With the basics of Redis covered, we shall now move on to create a simple to-do Slack bot. The aim of this bot is to allow users to create a to-do list, allowing them to add, complete, and delete a task from this list as they go about their day.

This time, we will start with a skeleton of what we want and build each feature step by step. Start by adding this new command to your bot:

bot.respondTo('todo', (message, channel, user) => {
  let args = getArgs(message.text);

  switch(args[0]) {
    case 'add':
      
      break;

    case 'complete':
      
      break;

    case 'delete':
      
      break;

    case 'help':
      channel.send('Create tasks with \`todo add [TASK]\`, complete them with \`todo complete [TASK_NUMBER]\` and remove them with \`todo delete [TASK_NUMBER]\` or \`todo delete all\`');
      break;

    default:
      showTodos(user.name, channel);
      break;
  }
}, true);

function showTodos(name, channel) {
  client.smembers(name, (err, set...