function tz_seconds_to_offset(seconds) {
  var tz_offset = "";
  var hours = zero_pad(Math.abs(seconds / 60 / 60));
  var minutes = zero_pad(Math.floor(seconds / 60) % 60);
  return (seconds < 0 ? "-" : "+") + hours + ":" + minutes;
}

function zero_pad(num) {
  num = "" + num;
  if (num.length == 1) {
    num = "0" + num;
  }
  return num;
}

function tokenfieldToArray(sel) {
  return $(sel)
    .tokenfield("getTokens")
    .map(function (t) {
      return t.value;
    });
}

$(function () {
  // Set the date from JS
  var d = new Date();
  $("#note_date").val(
    d.getFullYear() +
      "-" +
      zero_pad(d.getMonth() + 1) +
      "-" +
      zero_pad(d.getDate())
  );
  $("#note_time").val(
    zero_pad(d.getHours()) +
      ":" +
      zero_pad(d.getMinutes()) +
      ":" +
      zero_pad(d.getSeconds())
  );
  $("#note_tzoffset").val(
    tz_seconds_to_offset(d.getTimezoneOffset() * 60 * -1)
  );

  // ctrl-s to save
  $(window).on("keydown", function (e) {
    if (e.keyCode == 83 && e.ctrlKey) {
      $("#btn_post").click();
    }
  });
});

function auto_prefix_url_field(field) {
  var str = field.value;
  if (!/^https?:\/\//.test(str)) {
    str = "http://" + str;
  }
  field.value = str;
}