!!(function () {
  var aUnits = {
    wenig: 30,
    normal: 40,
    viel: 50,
    "sehr viel": 60,
  };
  var iHunger = 40;
  var iRolls = 1;
  var $oRolls = $("#halfRolls");
  var $oSelect = $("#hunger");
  var aMeasures = ["G", "KG", "T"];

  var inf = function (iIn) {
    var sIn = String(Math.round(iIn));
    var rGx = /(\d+)(\d{3})/;
    while (rGx.test(sIn)) sIn = sIn.replace(rGx, "$1.$2");
    return sIn;
  };
  var nf = function (fIn) {
    var aIn = String(parseFloat(fIn).toFixed(2)).split(".");
    var rGx = /(\d+)(\d{3})/;
    while (rGx.test(aIn[0])) aIn[0] = aIn[0].replace(rGx, "$1.$2");
    return aIn.join(",");
  };
  var calc = function () {
    var fHack = iRolls * iHunger;
    var sMeas = "";
    var bDiv = false;
    for (var i in aMeasures) {
      sMeas = aMeasures[i];
      if (fHack < 1000) break;
      fHack /= 1000;
      bDiv = true;
    }
    document.location.hash = "r" + iRolls + "-m" + iHunger;
    $("#out").text(
      "Bestell " +
        (bDiv ? nf(fHack) : inf(fHack)) +
        " " +
        sMeas +
        " Mett beim Metzger, bro.",
    );
  };

  var aMatch = document.location.hash.match(/r(\d+)-m(\d+)/);
  if (aMatch) {
    iRolls = parseInt(aMatch[1]);
    iHunger = parseInt(aMatch[2]);
    calc();
  }

  $oRolls.val(iRolls).on("change", function () {
    iRolls = parseInt($oRolls.val());
  });

  $.each(aUnits, function (name, e) {
    $oSelect.append(
      $("<option>")
        .attr("value", e)
        .prop("selected", e == iHunger)
        .text(name),
    );
  });

  $oSelect.on("change", function () {
    iHunger = $oSelect.val();
  });

  $("#calc").on("click", calc);
})();