LEDMatrix/web_interface/templates/v3/captive_setup.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="color-scheme" content="light dark">
<title>LEDMatrix WiFi Setup</title>
<style>
:root{--bg:#f3f4f6;--surface:#fff;--text:#1f2937;--label:#374151;--muted:#4b5563;--faint:#6b7280;--line:#e5e7eb;--field:#d1d5db;--accent:#2563eb;--accent-hover:#1d4ed8;--scan:#e5e7eb;--scan-hover:#d1d5db;--ok-bg:#d1fae5;--ok:#065f46;--err-bg:#fee2e2;--err:#991b1b;--info-bg:#dbeafe;--info:#1e40af}
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h1{font-size:20px;margin-bottom:4px}
.subtitle{color:var(--muted);font-size:14px;margin-bottom:20px}
.card{background:var(--surface);border-radius:12px;padding:20px;box-shadow:0 1px 3px rgba(0,0,0,.1);margin-bottom:16px}
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select:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.btn{display:block;width:100%;min-height:44px;padding:12px;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;text-align:center;transition:background-color .15s}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
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</style>
</head>
<body>

<h1>LEDMatrix WiFi Setup</h1>
<p class="subtitle">Connect your device to a WiFi network</p>

<div id="msg" class="msg" role="status" aria-live="polite" aria-atomic="true"></div>

<div id="setup-form">
  <div class="card">
    <div class="step" aria-hidden="true">Step 1 &mdash; Choose Network</div>
    <label for="net-select">Available Networks</label>
    <div class="row">
      <select id="net-select" onchange="onSelectNetwork()">
        <option value="">-- Scan to find networks --</option>
      </select>
      <button type="button" class="btn btn-scan" id="btn-scan" onclick="doScan()">
        Scan
      </button>
    </div>
    <div class="or-divider" aria-hidden="true">or enter manually</div>
    <label for="manual-ssid" class="sr-only">Network name (SSID), if it isn't listed</label>
    <input type="text" id="manual-ssid" placeholder="Network name (SSID)" maxlength="32"
           autocomplete="off" autocapitalize="off" spellcheck="false" oninput="onManualInput()">
  </div>

  <div class="card">
    <div class="step" aria-hidden="true">Step 2 &mdash; Password</div>
    <label for="password">WiFi Password</label>
    <input type="password" id="password" placeholder="Leave empty for open networks" maxlength="63"
           autocomplete="current-password" aria-describedby="password-hint">
    <p id="password-hint" class="sr-only">Leave empty for open networks.</p>
  </div>

  <div class="card">
    <button type="button" class="btn btn-primary" id="btn-connect" onclick="doConnect()" disabled>
      Connect
    </button>
  </div>
</div>

<div id="success-view" class="card hidden" tabindex="-1" aria-labelledby="success-title">
  <div class="success-box">
    <svg class="icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><circle cx="12" cy="12" r="10"/><path d="M7.5 12.5l3 3 6-6"/></svg>
    <p class="title" id="success-title">Connected!</p>
    <p class="hint">Your device is now on the network. Access the full interface at:</p>
    <p class="ip" id="new-ip"></p>
    <p class="note">You may need to reconnect your phone to the same WiFi network.</p>
  </div>
</div>

<div class="footer">
  <a href="/">Open Full Interface</a>
</div>

<script>
var selectedSSID = '';
var scanning = false;
var connecting = false;
var msgTimer = null;

function $(id) { return document.getElementById(id); }

// fetch() with a deadline: on a flaky AP link a request can otherwise hang
// forever and leave the buttons stuck in their busy state.
function fetchWithTimeout(url, options, ms) {
  options = options || {};
  if (typeof AbortController === 'undefined') return fetch(url, options);
  var controller = new AbortController();
  var timer = setTimeout(function() { controller.abort(); }, ms);
  options.signal = controller.signal;
  return fetch(url, options).finally(function() { clearTimeout(timer); });
}

function readJson(r) {
  return r.json().catch(function() {
    throw new Error(r.ok ? 'bad-response' : 'http-' + r.status);
  });
}

function setBusy(btn, label) {
  btn.textContent = '';
  var spin = document.createElement('span');
  spin.className = 'spinner';
  spin.setAttribute('aria-hidden', 'true');
  btn.appendChild(spin);
  btn.appendChild(document.createTextNode(label));
}

function showMsg(text, type) {
  var el = $('msg');
  if (msgTimer) { clearTimeout(msgTimer); msgTimer = null; }
  el.style.display = '';
  // Errors interrupt; progress and success wait their turn.
  el.setAttribute('role', type === 'err' ? 'alert' : 'status');
  el.setAttribute('aria-live', type === 'err' ? 'assertive' : 'polite');
  el.textContent = text;
  el.className = 'msg msg-' + (type || 'info');
  if (type === 'ok') msgTimer = setTimeout(function() { el.style.display = 'none'; }, 8000);
}

function clearMsg() {
  if (msgTimer) { clearTimeout(msgTimer); msgTimer = null; }
  $('msg').className = 'msg';
  $('msg').textContent = '';
}

function updateConnectBtn() {
  var ssid = $('net-select').value || $('manual-ssid').value.trim();
  $('btn-connect').disabled = !ssid || connecting;
}

function onSelectNetwork() {
  $('manual-ssid').value = '';
  selectedSSID = $('net-select').value;
  updateConnectBtn();
}

function onManualInput() {
  $('net-select').value = '';
  selectedSSID = '';
  updateConnectBtn();
}

function doScan() {
  if (scanning) return;
  scanning = true;
  var btn = $('btn-scan');
  btn.disabled = true;
  btn.setAttribute('aria-busy', 'true');
  setBusy(btn, 'Scanning');
  clearMsg();

  fetchWithTimeout('/api/v3/wifi/scan', {}, 30000)
    .then(readJson)
    .then(function(data) {
      var sel = $('net-select');
      var previous = sel.value;
      sel.innerHTML = '<option value="">-- Select a network --</option>';
      if (data.status === 'success' && Array.isArray(data.data)) {
        var seen = {};
        var nets = data.data.filter(function(n) {
          if (!n || !n.ssid || seen[n.ssid]) return false;
          seen[n.ssid] = true;
          return true;
        });
        for (var i = 0; i < nets.length; i++) {
          var n = nets[i];
          var opt = document.createElement('option');
          opt.value = n.ssid;
          var details = [];
          if (n.signal !== undefined && n.signal !== null) details.push(n.signal + '%');
          if (n.security) details.push(n.security);
          opt.textContent = n.ssid + (details.length ? ' (' + details.join(' - ') + ')' : '');
          sel.appendChild(opt);
        }
        if (previous && seen[previous]) sel.value = previous;
        if (nets.length > 0) {
          var msg = 'Found ' + nets.length + (nets.length === 1 ? ' network' : ' networks');
          if (data.cached) {
            msg += ' — showing cached networks. Connect to see the latest.';
          }
          showMsg(msg, data.cached ? 'info' : 'ok');
        } else {
          showMsg('No networks found. ' + (data.cached ? 'Enter your network name manually.' : 'Try scanning again, or enter your network name manually.'), 'info');
        }
      } else {
        showMsg(data.message || 'Scan failed. Try again, or enter your network name manually.', 'err');
      }
    })
    .catch(function(e) {
      var why = e && e.name === 'AbortError'
        ? 'The scan took too long.'
        : 'Couldn’t reach the device to scan.';
      showMsg(why + ' Stay close to the device and try again, or enter your network name manually.', 'err');
    })
    .finally(function() {
      scanning = false;
      btn.disabled = false;
      btn.removeAttribute('aria-busy');
      btn.textContent = 'Scan';
      updateConnectBtn();
    });
}

function doConnect() {
  var ssid = $('net-select').value || $('manual-ssid').value.trim();
  if (!ssid || connecting) return;
  connecting = true;
  var btn = $('btn-connect');
  btn.disabled = true;
  btn.setAttribute('aria-busy', 'true');
  setBusy(btn, 'Connecting…');
  clearMsg();
  showMsg('Connecting to ' + ssid + '… This may take 15–30 seconds.', 'info');

  function resetConnect() {
    connecting = false;
    btn.disabled = false;
    btn.removeAttribute('aria-busy');
    btn.textContent = 'Connect';
    updateConnectBtn();
  }

  fetchWithTimeout('/api/v3/wifi/connect', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ ssid: ssid, password: $('password').value || '' })
  }, 60000)
  .then(readJson)
  .then(function(data) {
    if (data.status === 'success') {
      clearMsg();
      // Poll for the new IP
      setTimeout(function() { checkNewIP(ssid); }, 3000);
    } else {
      var msg = data.error_type === 'wrong_password'
        ? 'Incorrect password — please try again.'
        : (data.message || 'Couldn’t connect to ' + ssid + '. Check the network name and password, then try again.');
      showMsg(msg, 'err');
      resetConnect();
      if (data.error_type === 'wrong_password') $('password').focus();
    }
  })
  .catch(function(e) {
    if (e && /^http-|^bad-response$/.test(e.message)) {
      showMsg('The device couldn’t start the connection. Try again in a moment.', 'err');
      resetConnect();
      return;
    }
    // Connection may drop if AP mode was disabled — that's expected
    clearMsg();
    showMsg('Connection attempt sent. If the page stops responding, the device is connecting to ' + ssid + '.', 'info');
    setTimeout(function() { showSuccessFallback(ssid); }, 5000);
  });
}

var MAX_IP_RETRIES = 20;

function checkNewIP(ssid, retriesLeft) {
  if (retriesLeft === undefined) retriesLeft = MAX_IP_RETRIES;
  if (retriesLeft <= 0) {
    showSuccessFallback(ssid);
    return;
  }
  fetchWithTimeout('/api/v3/wifi/status', {}, 8000)
    .then(readJson)
    .then(function(data) {
      if (data.status === 'success' && data.data && data.data.connected && data.data.ip_address) {
        showSuccess(data.data.ip_address);
      } else {
        setTimeout(function() { checkNewIP(ssid, retriesLeft - 1); }, 3000);
      }
    })
    .catch(function() {
      // AP likely down — show fallback
      showSuccessFallback(ssid);
    });
}

function revealSuccess(text) {
  $('setup-form').classList.add('hidden');
  var view = $('success-view');
  view.classList.remove('hidden');
  $('new-ip').textContent = text;
  clearMsg();
  view.focus();
}

function showSuccess(ip) {
  revealSuccess('http://' + ip + ':5000');
}

function showSuccessFallback(ssid) {
  revealSuccess('Check your router for the device IP');
}

// Auto-scan on load
doScan();
</script>
</body>
</html>