Gmail Archive

function archive_email_singlefile() {

  var archive_label=2009 // year of email to archive
  var onePass = 50; // 50 emails at a time are archived; change this if the script is getting excessive timeout errors
  
  var currUserEmail = Session.getEffectiveUser().getEmail(); // for the notification email
  var query = 'after:1/1/' + archive_label + ' before:1/1/' + (archive_label+1) + ' in:anywhere';
  var folderName = "GmailAttachments_" + archive_label
  var archiveFile = "GmailArchive_" + archive_label + ".txt"
  var startIndex = 0;
  var MsgAtts = "";
  var totMsgs = 0;

  console.log(query);

  var content = "";

  var scriptProperties = PropertiesService.getScriptProperties();
  var data = scriptProperties.getProperties();
  for (var key in data) {
    Logger.log('Key: %s, Value: %s', key, data[key]);
    if(key=='startIndex'){
      startIndex = data[key];
    }
  }

  startIndex=Number(startIndex)

  var threads = GmailApp.search(query, startIndex, onePass); // Max Threads is onePass
  var messages = GmailApp.getMessagesForThreads(threads);
  var parentFolder;
  if(threads.length > 0){
    parentFolder = getFolder_(folderName);
  }
  var root = DriveApp.getRootFolder();
  for (var i = 0 ; i < messages.length; i++) {
    for (var j = 0; j < messages[i].length; j++) {
      totMsgs ++;
      MsgAtts = "";
      var attachments = messages[i][j].getAttachments();
      for(var k in attachments){
        var attachment = attachments[k];
        var attachmentBlob = attachment.copyBlob();
        var file = DriveApp.createFile(attachmentBlob);
        parentFolder.addFile(file);
        root.removeFile(file);
      }
      for (var k = 0; k < attachments.length; k++) {
        MsgAtts = MsgAtts + "'" + attachments[k].getName() + "' ";
      }
      content = content + "\n\n\n///////////////////////////////////////////////////////////////////////////////////////////////////////////\n\nDate: " + messages[i][j].getDate() + "\nFrom: " + messages[i][j].getFrom() + "\nTo: " + messages[i][j].getTo() + "\nCc: " + messages[i][j].getCc() + "\nSubject: " + messages[i][j].getSubject() + "\nAttachments: " + MsgAtts + "\n\n" + messages[i][j].getPlainBody();
    }
  }
  Logger.log('Content used: ' + (100*content.length/67108864) + ' %.');

  if(startIndex==0){
    newFile = DriveApp.createFile(archiveFile,content);
  }
  else {
    var archFiles = DriveApp.getFilesByName(archiveFile);
    var archFile = archFiles.next();
    var combinedContent = archFile.getBlob().getDataAsString() + content;
    archFile.setContent(combinedContent);
  }

  scriptProperties.setProperties({
    'startIndex':startIndex+onePass
  });

  Logger.log (totMsgs + " messages archived.")

  // delete triggers
  var triggers = ScriptApp.getProjectTriggers();
  for (var i = 0; i < triggers.length; i++) {
    ScriptApp.deleteTrigger(triggers[i]);
  }

  // set new trigger if necessary
  if (threads.length==onePass){
      ScriptApp.newTrigger("archive_email_singlefile")
      .timeBased()
      .after(15 * 1000) // run the script again in 15 seconds
      .create();
    }
  else {
      var totalIndexed = startIndex + threads.length;
      Logger.log(totalIndexed + " threads archived.")
      // reset startIndex
      scriptProperties.setProperties({
        'startIndex':0
      });
      // send notification email
      MailApp.sendEmail(currUserEmail,"Gmail Archive " + archive_label,totalIndexed + " email threads for the year "+ archive_label +" have been archived along with their attachments.  Look in your Google Drive root director for a folder entitled 'GmailAttachments " +archive_label+ "' and for " + archiveFile +".");
    }


}

function getFolder_(folderName){
  var folder;
  var fi = DriveApp.getFoldersByName(folderName);
  if(fi.hasNext()){
    folder = fi.next();
  }
  else{
    folder = DriveApp.createFolder(folderName);
  }
  return folder;
}

function resetStartIndex(){
  var scriptProperties = PropertiesService.getScriptProperties();
  var data = scriptProperties.getProperties();
  Logger.log("Before reset.")
  for (var key in data) {
    Logger.log('Key: %s, Value: %s', key, data[key]);
  }
  scriptProperties.setProperties({
    'startIndex':0
  });
  Logger.log("After reset.")
  var data = scriptProperties.getProperties();
  for (var key in data) {
    Logger.log('Key: %s, Value: %s', key, data[key]);
  }
}

function showStartIndex(){
  var scriptProperties = PropertiesService.getScriptProperties();
  var data = scriptProperties.getProperties();
  for (var key in data) {
    Logger.log('Key: %s, Value: %s', key, data[key]);
  }
}