addumb.github.io/giftexchange.html at master · addumb/addumb.github.io · GitHub

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<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>I just want a fucking gift exchange name shuffler</title>
    <script>
      // ROTFL this whole thing is so horrible. Whatever.
      function remove(arr, me) {
        return arr.filter(e => e !== me);
      }
      function shufflethefuckingnames() {
        var result = document.createElement("ol");
        var names = [].slice
          .call(document.querySelectorAll("input"))
          .flatMap(function(e) {
            return e.value;
          });
        let uniqueNames = [...new Set(names)];
        if (names.length > uniqueNames.length) {
          var sass = document.createElement("li");
          sass.innerHTML =
            "You're an idiot. Use unique names for christ' sake.";
          result.appendChild(sass);
        }
        var givers = uniqueNames.slice(0);
        var getters = uniqueNames.slice(0);
        givers.forEach(function(giver) {
          var candidates = remove(getters.slice(0), giver);
          var giveridx = givers.indexOf(giver);
          var getteridx;
          if (
            candidates.length == 2 &&
            givers.indexOf(candidates[0]) < giveridx
          ) {
            getteridx = 1;
          } else {
            getteridx = Math.floor(Math.random() * candidates.length);
          }
          var getter = candidates[getteridx];
          getters = remove(getters, getter);
          var newnameli = document.createElement("li");
          newnameli.innerHTML = giver + " has " + getter;
          result.appendChild(newnameli);
        });
        document.getElementById("results").innerHTML = "";
        document.getElementById("results").appendChild(result);
      }
      function morenames() {
        var newnameli = document.createElement("li");
        var newnamelabel = document.createElement("label");
        newnamelabel.innerHTML = "Name: ";
        var newname = document.createElement("input");
        newname.type = "text";
        newnamelabel.appendChild(newname);
        newnameli.appendChild(newnamelabel);
        document.getElementById("names").appendChild(newnameli);
      }
    </script>
  </head>
  <body>
    <h1>I just want a fucking gift exchange name shuffler</h1>
    <ul id="names">
      <li>
        <label>Name: <input type="text" value="Little Cindy Lou"/></label>
      </li>
      <li>
        <label>Name: <input type="text" value="Max"/></label>
      </li>
      <li>
        <label>Name: <input type="text" value="Grinch"/></label>
      </li>
    </ul>
    <button onclick="morenames()">
      More names, goddammit! I don't have some tiny shit family, idiot.
    </button>
    <button onclick="shufflethefuckingnames()">
      Just shuffle the fucking names into pairs.
    </button>
    <div id="results"></div>
  </body>
</html>