(function () {
// Positions are 1-indexed to match how the original tool (and the
// in-game name entry screen) describes trainer-name character slots.
// Position 1 is never read by the glitch; it's rendered but inert.
var SPECIES_POSITIONS = [3, 5, 7];
var LEVEL_POSITIONS = [2, 4, 6];
var ROLE_LABEL = {
  1: "unused",
  2: "level 1",
  3: "species 1",
  4: "level 2",
  5: "species 2",
  6: "level 3",
  7: "species 3"
};
// Symbols not present on a standard keyboard; everything else usable
// in a name (letters, digits, ( ) : ; [ ] ! - ? . / ,) can just be typed.
var SYMBOL_BUTTONS = ["PK", "MN", "×", "♂", "♀"];
var FALLBACK_SPECIES = "MissingNo.";
var FALLBACK_LEVEL = 127;
// Some glitch species (only reachable via the digit characters) are
// documented as freezing the real game outright, not just glitching it.
var FREEZE_KEYWORD = "Freezes";

var charmap = {"A":{"decimal":128,"pokemon":"Golduck"},"B":{"decimal":129,"pokemon":"Hypno"},"C":{"decimal":130,"pokemon":"Golbat"},"D":{"decimal":131,"pokemon":"Mewtwo"},"E":{"decimal":132,"pokemon":"Snorlax"},"F":{"decimal":133,"pokemon":"Magikarp"},"G":{"decimal":134,"pokemon":"MissingNo."},"H":{"decimal":135,"pokemon":"MissingNo."},"I":{"decimal":136,"pokemon":"Muk"},"J":{"decimal":137,"pokemon":"MissingNo."},"K":{"decimal":138,"pokemon":"Kingler"},"L":{"decimal":139,"pokemon":"Cloyster"},"M":{"decimal":140,"pokemon":"MissingNo."},"N":{"decimal":141,"pokemon":"Electrode"},"O":{"decimal":142,"pokemon":"Clefable"},"P":{"decimal":143,"pokemon":"Weezing"},"Q":{"decimal":144,"pokemon":"Persian"},"R":{"decimal":145,"pokemon":"Marowak"},"S":{"decimal":146,"pokemon":"MissingNo."},"T":{"decimal":147,"pokemon":"Haunter"},"U":{"decimal":148,"pokemon":"Abra"},"V":{"decimal":149,"pokemon":"Alakazam"},"W":{"decimal":150,"pokemon":"Pidgeotto"},"X":{"decimal":151,"pokemon":"Pidgeot"},"Y":{"decimal":152,"pokemon":"Starmie"},"Z":{"decimal":153,"pokemon":"Bulbasaur"},"(":{"decimal":154,"pokemon":"Venusaur"},")":{"decimal":155,"pokemon":"Tentacruel"},":":{"decimal":156,"pokemon":"MissingNo."},";":{"decimal":157,"pokemon":"Goldeen"},"[":{"decimal":158,"pokemon":"Seaking"},"]":{"decimal":159,"pokemon":"MissingNo."},"a":{"decimal":160,"pokemon":"MissingNo."},"b":{"decimal":161,"pokemon":"MissingNo."},"c":{"decimal":162,"pokemon":"MissingNo."},"d":{"decimal":163,"pokemon":"Ponyta"},"e":{"decimal":164,"pokemon":"Rapidash"},"f":{"decimal":165,"pokemon":"Rattata"},"g":{"decimal":166,"pokemon":"Raticate"},"h":{"decimal":167,"pokemon":"Nidorino"},"i":{"decimal":168,"pokemon":"Nidorina"},"j":{"decimal":169,"pokemon":"Geodude"},"k":{"decimal":170,"pokemon":"Porygon"},"l":{"decimal":171,"pokemon":"Aerodactyl"},"m":{"decimal":172,"pokemon":"MissingNo."},"n":{"decimal":173,"pokemon":"Magnemite"},"o":{"decimal":174,"pokemon":"MissingNo."},"p":{"decimal":175,"pokemon":"MissingNo."},"q":{"decimal":176,"pokemon":"Charmander"},"r":{"decimal":177,"pokemon":"Squirtle"},"s":{"decimal":178,"pokemon":"Charmeleon"},"t":{"decimal":179,"pokemon":"Wartortle"},"u":{"decimal":180,"pokemon":"Charizard"},"v":{"decimal":181,"pokemon":"MissingNo."},"w":{"decimal":182,"pokemon":"Kabutops Fossil"},"x":{"decimal":183,"pokemon":"Aerodactyl Fossil"},"y":{"decimal":184,"pokemon":"Ghost"},"z":{"decimal":185,"pokemon":"Oddish"},"PK":{"decimal":225,"pokemon":"Rival (#1)"},"MN":{"decimal":226,"pokemon":"Professor Oak"},"-":{"decimal":227,"pokemon":"Chief"},"?":{"decimal":230,"pokemon":"Rocket"},"!":{"decimal":231,"pokemon":"Cooltrainer Male"},"♂":{"decimal":239,"pokemon":"Blaine"},"×":{"decimal":241,"pokemon":"Gentleman"},".":{"decimal":242,"pokemon":"Rival (#2)"},"/":{"decimal":243,"pokemon":"Rival (Final)"},",":{"decimal":244,"pokemon":"Lorelei"},"♀":{"decimal":245,"pokemon":"Channeler"},"0":{"decimal":246,"pokemon":"Agatha"},"1":{"decimal":247,"pokemon":"Lance"},"2":{"decimal":248,"pokemon":"Glitch - Freezes Game"},"3":{"decimal":249,"pokemon":"Glitch - Freezes Game"},"4":{"decimal":250,"pokemon":"Glitch - Freezes Game"},"5":{"decimal":251,"pokemon":"Glitch Trainer (Can be used for ZZAZZ Glitch)"},"6":{"decimal":252,"pokemon":"Glitch Trainer (Can be used for ZZAZZ Glitch)"},"7":{"decimal":253,"pokemon":"Glitch Trainer (Freezes after battle)"},"8":{"decimal":254,"pokemon":"Glitch Trainer (Can be used for ZZAZZ Glitch)"},"9":{"decimal":255,"pokemon":"Glitch Trainer (Can be used for ZZAZZ Glitch)"}};

var nameRow = document.getElementById("name-row");
var results = document.getElementById("results");

for (var i = 1; i <= 7; i++) {
  (function (i) {
    var slot = document.createElement("div");
    slot.className = "slot";

    var index = document.createElement("div");
    index.className = "index";
    index.textContent = "char " + i;
    slot.appendChild(index);

    var role = document.createElement("div");
    role.className = "role";
    role.textContent = ROLE_LABEL[i];
    slot.appendChild(role);

    var input = document.createElement("input");
    input.type = "text";
    input.maxLength = 2;
    input.autocomplete = "off";
    input.spellcheck = false;
    input.id = "char" + i;
    input.dataset.pos = i;
    slot.appendChild(input);

    if (i > 1) {
      var symbols = document.createElement("div");
      symbols.className = "symbols";
      SYMBOL_BUTTONS.forEach(function (sym) {
        var btn = document.createElement("button");
        btn.type = "button";
        btn.textContent = sym;
        btn.addEventListener("click", function () {
          input.value = sym;
          decode();
          focusNext(i);
        });
        symbols.appendChild(btn);
      });
      slot.appendChild(symbols);
    }

    nameRow.appendChild(slot);
  })(i);
}

nameRow.addEventListener("input", function (event) {
  if (event.target.tagName !== "INPUT") return;
  var pos = parseInt(event.target.dataset.pos, 10);
  if (event.target.value.length >= 1) {
    focusNext(pos);
  }
  decode();
});

function focusNext(pos) {
  if (pos < 7) {
    document.getElementById("char" + (pos + 1)).focus();
  }
}

function lookup(token) {
  if (!token) return null;
  return charmap[token] || null;
}

function decode() {
  var chars = [];
  for (var i = 1; i <= 7; i++) {
    chars[i] = document.getElementById("char" + i).value;
  }

  results.innerHTML = "";
  for (var pair = 0; pair < 3; pair++) {
    var speciesPos = SPECIES_POSITIONS[pair];
    var levelPos = LEVEL_POSITIONS[pair];

    var speciesEntry = lookup(chars[speciesPos]);
    var levelEntry = lookup(chars[levelPos]);

    var species = speciesEntry ? speciesEntry.pokemon : FALLBACK_SPECIES;
    var level = levelEntry ? levelEntry.decimal : FALLBACK_LEVEL;
    var freezes = species.indexOf(FREEZE_KEYWORD) !== -1;

    document.getElementById("char" + speciesPos).classList.toggle("char-freeze", freezes);

    var card = document.createElement("div");
    card.className = freezes ? "encounter encounter--freeze" : "encounter";

    var from = document.createElement("div");
    from.className = "from";
    from.textContent = "from char " + speciesPos + " & char " + levelPos;
    card.appendChild(from);

    var speciesEl = document.createElement("div");
    speciesEl.className = "species";
    speciesEl.textContent = species;
    card.appendChild(speciesEl);

    var levelEl = document.createElement("div");
    levelEl.className = "level";
    levelEl.textContent = "Level " + level;
    card.appendChild(levelEl);

    if (freezes) {
      var warning = document.createElement("div");
      warning.className = "freeze-warning";
      warning.textContent = "⚠ Freezes the game on real hardware — don't use this in-game";
      card.appendChild(warning);
    }

    results.appendChild(card);
  }
}

decode();
})();