Log unread gmail messages

unread.gs

function logToTextFile(filename, content) {  
  var files = DriveApp.getFilesByName(filename)
  if (files.hasNext()) { return files.next().setContent(content) }
  else { return DriveApp.createFile(filename, content) }
}

function getUnread() {
  function flatten(arr) { return [].concat.apply([], arr) }
  function formatDate(d) { return Utilities.formatDate(new Date(d), "PST", "EEE, MMM d @h:mm a")}
  function removeDomain(strongWithEmail) { return strongWithEmail.replace(/<.+@.+>/gm, '')}
  var threads = GmailApp.search('is:unread', 0, 100)
  var messages = flatten(threads.map(function(thread) { return thread.getMessages() }))
    .filter(function(message) { return message.isUnread() })
  
  var content = '👩‍🚀☄️💥'+'TOTAL UNREAD: '+messages.length+' - '+formatDate(new Date())+'\n\n'
  for (var i in messages) {
    var message = messages[i]
    var data = {
      date: formatDate(message.getDate()),
      from: message.getFrom(),
      to: message.getTo(),
      cc: message.getCc(),
      subject: message.getSubject(),
      body: message.getPlainBody(),
      snippet: function() { return this.body.split('\n')[0]+' '+this.body.split('\n')[1]+' '+this.body.split('\n')[3] }
    }
    content += '\n\n'+'🔥'+data.date
      +' - from: '+data.from
      +', subject: '+data.subject
      +', snippet: '+data.snippet()
  }
  
  return logToTextFile('Unread Log.txt', removeDomain(content))
}