/**
 * Console page — live console output with command input and history.
 */
function ConsolePage(params, container) {
  var html =
    '<div id="ConsoleController">' +
      '<div id="console-output" style="height:calc(100vh - 130px)" class="Output scrollable text-white-50">Loading…</div>' +
      '<form id="console-form">' +
        '<input type="text" id="console-input" class="form-control" autocomplete="off">' +
      '</form>' +
    '</div>';
  container.innerHTML = html;

  var outputEl = document.getElementById('console-output');
  var inputEl = document.getElementById('console-input');
  var commandHistory = [];
  var historyIndex = 0;
  var firstOutput = true;

  function addOutput(msg) {
    if (firstOutput) { outputEl.innerHTML = ''; outputEl.classList.remove('text-white-50'); firstOutput = false; }
    var div = document.createElement('div');
    div.className = msg.Type;
    div.textContent = stripHtml(msg.Message);
    outputEl.appendChild(div);
    if (isScrolledToBottom(outputEl)) outputEl.scrollTop = outputEl.scrollHeight;
  }

  function onSubmit() {
    var cmd = inputEl.value.trim();
    if (!cmd) return;
    addOutput({ Message: cmd, Type: 'Command' });
    commandHistory.push(cmd);
    historyIndex = commandHistory.length;
    Rcon.command(cmd, 1);
    inputEl.value = '';
  }

  function onKeyDown(e) {
    if (commandHistory.length === 0) return;
    if (e.keyCode === 38) { // Up
      historyIndex--;
      if (historyIndex < 0) historyIndex = commandHistory.length - 1;
      inputEl.value = commandHistory[historyIndex] || '';
      e.preventDefault();
    } else if (e.keyCode === 40) { // Down
      historyIndex++;
      if (historyIndex >= commandHistory.length) historyIndex = 0;
      inputEl.value = commandHistory[historyIndex] || '';
      e.preventDefault();
    } else {
      historyIndex = commandHistory.length;
    }
  }

  function onMessage(msg) {
    if (msg.Message && msg.Message.indexOf('[rcon] ') === 0) return;
    switch (msg.Type) {
      case 'Generic': case 'Log': case 'Error': case 'Warning':
        addOutput(msg); break;
    }
  }

  function fetchHistory() {
    Rcon.request('console.tail 128', function (response) {
      var messages = JSON.parse(response.Message);
      for (var i = 0; i < messages.length; i++) onMessage(messages[i]);
      outputEl.scrollTop = outputEl.scrollHeight;
    });
  }

  document.getElementById('console-form').addEventListener('submit', function (e) {
    e.preventDefault(); onSubmit();
  });
  inputEl.addEventListener('keydown', onKeyDown);
  Rcon.on('message', onMessage);

  if (Rcon.isConnected()) fetchHistory();
  else { var _c = function () { fetchHistory(); Rcon.off('connected', _c); }; Rcon.on('connected', _c); }

  return function cleanup() { Rcon.off('message', onMessage); };
}