Probot handler for the Why Not Both app

index.js

module.exports = (app) => {
  // Respond to new issue comments
  app.on('issue_comment.created', async context => {
    const message = context.payload.comment.body
    
    // The following does a rough approximation of
    // trying to find a question that proposes two
    // alternatives. It's not very smart about it,
    // but good enough for our case.
    const dichotomy = message.toLowerCase()
      .split(/[!.?] /)
      .find(function(sentence) {
        return sentence.indexOf(' or ') > -1
          && sentence.endsWith('?')
      }) != undefined

    if (dichotomy) {
      context.log('And it contains a dichotomy!')
      const params = context.issue({
        body: '![The why not both girl](https://media3.giphy.com/media/3o85xIO33l7RlmLR4I/giphy.gif)'
      })
      // This creates a comment with our favorite why not both meme animated gif
      return context.github.issues.createComment(params)
    }
  })
}