logstream/web/login.html

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Logstream</title>
  <link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Crect width='32' height='32' rx='8' fill='%236366f1'/%3E%3Cpath d='M8 10h16M8 16h11M8 22h14' stroke='white' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E">
  <link rel="stylesheet" href="style.css">
  <script>
    // Same saved theme and language as the UI, applied before first paint.
    try {
      var t = localStorage.getItem('logstream.theme');
      if (t === 'light' || t === 'dark') document.documentElement.dataset.theme = t;
      var l = localStorage.getItem('logstream.lang');
      if (l) document.documentElement.lang = l;
    } catch (e) {}
  </script>
</head>
<body class="login-page">
  <div class="login-tools">
    <div class="seg" role="radiogroup" id="langSwitch">
      <button type="button" role="radio" data-lang="fr">FR</button>
      <button type="button" role="radio" data-lang="en">EN</button>
    </div>
    <button id="themeBtn" class="icon-btn" type="button" data-i18n-title="theme" data-i18n-aria="theme">
      <svg class="sun" viewBox="0 0 24 24"><circle cx="12" cy="12" r="4"/><path d="M12 2v2M12 20v2M4.9 4.9l1.4 1.4M17.7 17.7l1.4 1.4M2 12h2M20 12h2M4.9 19.1l1.4-1.4M17.7 6.3l1.4-1.4"/></svg>
      <svg class="moon" viewBox="0 0 24 24"><path d="M21 12.8A9 9 0 1 1 11.2 3a7 7 0 0 0 9.8 9.8z"/></svg>
    </button>
  </div>

  <main class="login-card">
    <img id="logo" class="login-logo" src="auth/logo" alt="" hidden>
    <div class="brand">
      <svg viewBox="0 0 32 32" aria-hidden="true"><rect width="32" height="32" rx="8"/><path d="M8 10h16M8 16h11M8 22h14"/></svg>
      <span>Logstream</span>
    </div>
    <p class="muted" data-i18n="intro">Sign in to view the logs.</p>

    <form method="post" action="auth/login">
      <input type="hidden" name="r" id="ret">
      <label for="user" data-i18n="user">User</label>
      <input id="user" name="user" type="text" autocomplete="username" autocapitalize="none" spellcheck="false" required autofocus>
      <label for="pass" data-i18n="pass">Password</label>
      <input id="pass" name="pass" type="password" autocomplete="current-password" required>
      <p id="err" class="login-err" role="alert" data-i18n="error" hidden>Wrong user or password.</p>
      <button class="btn primary" type="submit" data-i18n="submit">Sign in</button>
    </form>
  </main>

  <script>
    (function () {
      var I18N = {
        en: { intro: 'Sign in to view the logs.', user: 'User', pass: 'Password', submit: 'Sign in',
              error: 'Wrong user or password.', theme: 'Light / dark theme' },
        fr: { intro: 'Connectez-vous pour consulter les logs.', user: 'Utilisateur', pass: 'Mot de passe',
              submit: 'Se connecter', error: 'Utilisateur ou mot de passe incorrect.', theme: 'Thème clair / sombre' },
      };
      function get(k) { try { return localStorage.getItem('logstream.' + k); } catch (e) { return null; } }
      function set(k, v) { try { localStorage.setItem('logstream.' + k, v); } catch (e) {} }
      var lang = get('lang');
      if (!I18N[lang]) lang = /^fr\b/i.test(navigator.language || '') ? 'fr' : 'en';

      function applyLang() {
        var d = I18N[lang];
        document.documentElement.lang = lang;
        document.querySelectorAll('[data-i18n]').forEach(function (el) { el.textContent = d[el.dataset.i18n]; });
        document.querySelectorAll('[data-i18n-title]').forEach(function (el) { el.title = d[el.dataset.i18nTitle]; });
        document.querySelectorAll('[data-i18n-aria]').forEach(function (el) { el.setAttribute('aria-label', d[el.dataset.i18nAria]); });
        document.querySelectorAll('#langSwitch [data-lang]').forEach(function (b) { b.setAttribute('aria-checked', String(b.dataset.lang === lang)); });
      }
      document.querySelectorAll('#langSwitch [data-lang]').forEach(function (b) {
        b.addEventListener('click', function () { lang = b.dataset.lang; set('lang', lang); applyLang(); });
      });

      document.getElementById('themeBtn').addEventListener('click', function () {
        var root = document.documentElement;
        var dark = root.dataset.theme ? root.dataset.theme === 'dark' : matchMedia('(prefers-color-scheme: dark)').matches;
        root.dataset.theme = dark ? 'light' : 'dark';
        set('theme', root.dataset.theme);
      });

      var q = new URLSearchParams(location.search);
      document.getElementById('ret').value = q.get('r') || '/';
      document.getElementById('err').hidden = q.get('e') !== '1';

      // LOGIN_LOGO: shown only when the server has one.
      var logo = document.getElementById('logo');
      logo.addEventListener('load', function () { logo.hidden = false; });
      if (logo.complete && logo.naturalWidth) logo.hidden = false;

      applyLang();
    })();
  </script>
</body>
</html>