// ── API Keys Page (Admin) ──

function formatKeyStatus(status) {
  var map = {
    'valid': '✅ Gültig',
    'invalid': '❌ Ungültig',
    'rate_limited': '⚠️ Rate Limited',
    'quota_exceeded': '⚠️ Quota Exceeded',
    'error': '⚠️ Fehler',
    'unchecked': '⏳ Ungeprüft'
  };
  return map[status] || status;
}

function createUsageBadge(usage5h, usage7d) {
  if (usage5h == null && usage7d == null) return null;
  var badge = document.createElement('div');
  badge.className = 'usage-badge';

  function addRow(label, pct) {
    if (pct == null) return;
    var row = document.createElement('div');
    row.className = 'usage-row';

    var lbl = document.createElement('span');
    lbl.className = 'usage-label';
    lbl.textContent = label;

    var track = document.createElement('div');
    track.className = 'usage-track';

    var fill = document.createElement('div');
    fill.className = 'usage-fill';
    if (pct >= 90) fill.className += ' danger';
    else if (pct >= 70) fill.className += ' warn';
    fill.style.width = Math.min(pct, 100) + '%';
    track.appendChild(fill);

    var val = document.createElement('span');
    val.className = 'usage-pct';
    val.textContent = pct + '%';

    row.appendChild(lbl);
    row.appendChild(track);
    row.appendChild(val);
    badge.appendChild(row);
  }

  addRow('Sitzung', usage5h);
  addRow('Woche', usage7d);
  return badge;
}

registerPage('api-keys', {
  async init() {
    if (!currentUser || !currentUser.isAdmin) {
      navigateTo('dashboard');
      return;
    }

    var keys = [];
    var editingKeyId = null;

    var list = document.getElementById('apiKeysList');
    var newBtn = document.getElementById('apiKeysNewBtn');
    var form = document.getElementById('apiKeysForm');
    var formTitle = document.getElementById('apiKeysFormTitle');
    var providerSelect = document.getElementById('apiKeysProvider');
    var nameInput = document.getElementById('apiKeysName');
    var keyInput = document.getElementById('apiKeysKey');
    var saveBtn = document.getElementById('apiKeysFormSaveBtn');

    function renderKeys() {
      list.innerHTML = '';

      if (keys.length === 0) {
        var empty = document.createElement('div');
        empty.className = 'admin-user-meta';
        empty.style.padding = '1rem 0';
        empty.textContent = 'Keine API-Keys konfiguriert.';
        list.appendChild(empty);
        return;
      }

      keys.forEach(function(key) {
        var wrapper = document.createElement('div');

        var row = document.createElement('div');
        row.className = 'admin-user-row';

        var info = document.createElement('div');
        info.className = 'admin-user-info';

        var nameSpan = document.createElement('span');
        nameSpan.className = 'admin-user-name';
        nameSpan.textContent = key.name;

        var metaSpan = document.createElement('span');
        metaSpan.className = 'admin-user-meta';
        var parts = [key.provider];
        parts.push(formatKeyStatus(key.status));
        if (key.plan) parts.push(key.plan);
        if (key.checkedAt) parts.push(new Date(key.checkedAt).toLocaleString());
        metaSpan.textContent = parts.join(' · ');

        info.appendChild(nameSpan);
        if (key.sourceUrl) {
          var urlSpan = document.createElement('a');
          urlSpan.className = 'admin-user-meta';
          urlSpan.href = key.sourceUrl;
          urlSpan.target = '_blank';
          urlSpan.rel = 'noopener';
          urlSpan.textContent = key.sourceUrl.replace('https://github.com/', '');
          info.appendChild(urlSpan);
        }
        info.appendChild(metaSpan);

        // Toggle + Usage-Badge nebeneinander
        var badgeRow = document.createElement('div');
        badgeRow.style.cssText = 'display:flex;align-items:center;gap:8px;margin-top:2px';

        if (key.isActive) {
          var deactivateBtn = document.createElement('button');
          deactivateBtn.className = 'icon-btn';
          deactivateBtn.title = 'Deaktivieren';
          deactivateBtn.innerHTML = '<i class="fa fa-toggle-on" style="color:var(--accent)"></i>';
          deactivateBtn.addEventListener('click', function() { deactivateKey(key); });
          badgeRow.appendChild(deactivateBtn);
        } else {
          var activateBtn = document.createElement('button');
          activateBtn.className = 'icon-btn';
          activateBtn.title = 'Aktivieren';
          activateBtn.innerHTML = '<i class="fa fa-toggle-off"></i>';
          activateBtn.addEventListener('click', function() { activateKey(key); });
          badgeRow.appendChild(activateBtn);
        }

        var usageBadge = createUsageBadge(key.usage5h, key.usage7d);
        if (usageBadge) badgeRow.appendChild(usageBadge);

        // Status-Zeile (für Check-Ergebnis)
        var statusLine = document.createElement('div');
        statusLine.className = 'admin-user-meta';
        statusLine.style.cssText = 'padding:0 var(--box-padding) .5rem;display:none;font-size:.85em';

        // Check (nur Anthropic) – rechts neben Usage-Badge
        if (key.provider === 'anthropic') {
          var checkBtn = document.createElement('button');
          checkBtn.className = 'icon-btn';
          checkBtn.title = 'Key prüfen';
          checkBtn.innerHTML = '<i class="fa fa-refresh"></i>';
          checkBtn.addEventListener('click', function() { checkKey(key, checkBtn, statusLine); });
          badgeRow.appendChild(checkBtn);
        }

        info.appendChild(badgeRow);

        var actions = document.createElement('div');
        actions.className = 'admin-user-actions';

        // Bearbeiten
        var editBtn = document.createElement('button');
        editBtn.className = 'icon-btn';
        editBtn.title = 'Bearbeiten';
        editBtn.innerHTML = '<i class="fa fa-pencil"></i>';
        editBtn.addEventListener('click', function() { startEdit(key); });
        actions.appendChild(editBtn);

        // Löschen
        var deleteBtn = document.createElement('button');
        deleteBtn.className = 'icon-btn';
        deleteBtn.title = 'Löschen';
        deleteBtn.innerHTML = '<i class="fa fa-trash"></i>';
        deleteBtn.addEventListener('click', function() { deleteKey(key); });
        actions.appendChild(deleteBtn);

        row.appendChild(info);
        row.appendChild(actions);
        wrapper.appendChild(row);
        wrapper.appendChild(statusLine);
        list.appendChild(wrapper);
      });
    }

    async function loadKeys() {
      try {
        keys = await apiGetApiKeys();
        renderKeys();
      } catch (err) {
        showToast(err.message, 'error');
      }
    }

    async function checkKey(key, btn, statusLine) {
      var origHtml = btn.innerHTML;
      btn.innerHTML = '<i class="fa fa-spinner fa-spin"></i>';
      btn.disabled = true;
      statusLine.style.display = 'none';
      statusLine.innerHTML = '';
      try {
        var result = await apiCheckApiKey(key.keyId);
        statusLine.style.opacity = '1';
        statusLine.innerHTML = '';
        if (result.status === 'valid') {
          var text = document.createElement('span');
          var parts = [formatKeyStatus('valid'), result.plan];
          if (result.overage != null && result.overage > 0) parts.push('Overage: ' + result.overage + '%');
          text.textContent = parts.join(' · ');
          statusLine.appendChild(text);
          var badge = createUsageBadge(result.usage5h, result.usage7d);
          if (badge) { badge.style.marginTop = '4px'; statusLine.appendChild(badge); }
        } else {
          statusLine.textContent = '❌ ' + (result.message || 'Unbekannter Fehler');
        }
        await loadKeys();
      } catch (err) {
        statusLine.style.opacity = '1';
        statusLine.textContent = '❌ ' + err.message;
      } finally {
        btn.innerHTML = origHtml;
        btn.disabled = false;
      }
    }

    function startEdit(key) {
      editingKeyId = key.keyId;
      formTitle.textContent = 'API-Key bearbeiten';
      providerSelect.value = key.provider;
      providerSelect.disabled = true;
      nameInput.value = key.name;
      keyInput.value = key.apiKey;
      saveBtn.textContent = 'Speichern';
      form.hidden = false;
      nameInput.focus();
    }

    async function activateKey(key) {
      try {
        await apiActivateApiKey(key.keyId);
        showToast(key.name + ' aktiviert');
        await loadKeys();
      } catch (err) {
        showToast(err.message, 'error');
      }
    }

    async function deactivateKey(key) {
      try {
        await apiDeactivateApiKey(key.keyId);
        showToast(key.name + ' deaktiviert');
        await loadKeys();
      } catch (err) {
        showToast(err.message, 'error');
      }
    }

    async function deleteKey(key) {
      if (!confirm('API-Key "' + key.name + '" wirklich löschen?')) return;
      try {
        await apiDeleteApiKey(key.keyId);
        showToast('API-Key gelöscht');
        await loadKeys();
      } catch (err) {
        showToast(err.message, 'error');
      }
    }

    // Neuer Key
    newBtn.addEventListener('click', function() {
      editingKeyId = null;
      formTitle.textContent = 'Neuer API-Key';
      providerSelect.value = 'anthropic';
      providerSelect.disabled = false;
      nameInput.value = '';
      keyInput.value = '';
      saveBtn.textContent = 'Erstellen';
      form.hidden = false;
      nameInput.focus();
    });

    // Speichern (Erstellen oder Bearbeiten)
    saveBtn.addEventListener('click', () => withButtonLoading(saveBtn, saveBtn.textContent, async () => {
      var name = nameInput.value.trim();

      if (!name) {
        showToast('Name erforderlich', 'error');
        return;
      }

      try {
        if (editingKeyId) {
          // Bearbeiten
          var data = { name: name };
          var newKey = keyInput.value.trim();
          if (newKey) data.apiKey = newKey;
          await apiUpdateApiKey(editingKeyId, data);
          showToast('API-Key aktualisiert');
        } else {
          // Erstellen
          var provider = providerSelect.value;
          var apiKey = keyInput.value.trim();
          if (!apiKey) {
            showToast('API-Key erforderlich', 'error');
            return;
          }
          await apiCreateApiKey({ provider: provider, name: name, apiKey: apiKey });
          showToast('API-Key erstellt');
        }
        form.hidden = true;
        editingKeyId = null;
        await loadKeys();
      } catch (err) {
        showToast(err.message, 'error');
      }
    }));

    await loadKeys();

    // ── Scanner UI ──

    var scanBtn = document.getElementById('scanTriggerBtn');
    var scanStatusEl = document.getElementById('scanStatus');
    var scannedList = document.getElementById('scannedKeysList');
    var scannedKeys = [];
    var pollTimer = null;

    function renderScannedKeys() {
      scannedList.innerHTML = '';
      var visibleKeys = scannedKeys.filter(function(sk) { return sk.adoptedApiKeyId == null; });
      if (visibleKeys.length === 0) {
        var empty = document.createElement('div');
        empty.className = 'admin-user-meta';
        empty.style.padding = '1rem 0';
        empty.textContent = 'Keine gescannten Keys vorhanden.';
        scannedList.appendChild(empty);
        return;
      }

      visibleKeys.forEach(function(sk) {

        var row = document.createElement('div');
        row.className = 'admin-user-row';

        var info = document.createElement('div');
        info.className = 'admin-user-info';
        info.style.minWidth = '0';

        if (sk.sourceUrl) {
          var nameSpan = document.createElement('a');
          nameSpan.className = 'admin-user-name';
          nameSpan.href = sk.sourceUrl;
          nameSpan.target = '_blank';
          nameSpan.rel = 'noopener';
          nameSpan.textContent = sk.sourceUrl.replace('https://github.com/', '');
          info.appendChild(nameSpan);
        }

        var metaSpan = document.createElement('span');
        metaSpan.className = 'admin-user-meta';
        var metaParts = [];
        metaParts.push(formatKeyStatus(sk.status));
        if (sk.plan && sk.plan !== 'Unknown') metaParts.push(sk.plan);
        if (sk.checkedAt) metaParts.push(new Date(sk.checkedAt).toLocaleString());
        metaSpan.textContent = metaParts.join(' · ');

        info.appendChild(metaSpan);
        var skUsageBadge = createUsageBadge(sk.usage5h, sk.usage7d);
        if (skUsageBadge) info.appendChild(skUsageBadge);

        var actions = document.createElement('div');
        actions.className = 'admin-user-actions';

        // Recheck
        var recheckBtn = document.createElement('button');
        recheckBtn.className = 'icon-btn';
        recheckBtn.title = 'Erneut prüfen';
        recheckBtn.innerHTML = '<i class="fa fa-refresh"></i>';
        recheckBtn.addEventListener('click', async function() {
          recheckBtn.innerHTML = '<i class="fa fa-spinner fa-spin"></i>';
          recheckBtn.disabled = true;
          try {
            await apiRecheckScannedKey(sk.scannedKeyId);
            await loadScannedKeys();
          } catch (err) { showToast(err.message, 'error'); }
          finally { recheckBtn.innerHTML = '<i class="fa fa-refresh"></i>'; recheckBtn.disabled = false; }
        });
        actions.appendChild(recheckBtn);

        // Übernehmen (bei valid oder quota_exceeded)
        if (sk.status === 'valid' || sk.status === 'quota_exceeded') {
          var adoptBtn = document.createElement('button');
          adoptBtn.className = 'icon-btn';
          adoptBtn.title = 'Als API-Key übernehmen';
          adoptBtn.innerHTML = '<i class="fa fa-plus-circle" style="color:var(--accent)"></i>';
          adoptBtn.addEventListener('click', async function() {
            try {
              await apiAdoptScannedKey(sk.scannedKeyId);
              showToast('Key übernommen');
              await loadScannedKeys();
              await loadKeys();
            } catch (err) { showToast(err.message, 'error'); }
          });
          actions.appendChild(adoptBtn);
        }

        // Löschen
        var delBtn = document.createElement('button');
        delBtn.className = 'icon-btn';
        delBtn.title = 'Ignorieren';
        delBtn.innerHTML = '<i class="fa fa-trash"></i>';
        delBtn.addEventListener('click', async function() {
          try {
            await apiDeleteScannedKey(sk.scannedKeyId);
            await loadScannedKeys();
          } catch (err) { showToast(err.message, 'error'); }
        });
        actions.appendChild(delBtn);

        row.appendChild(info);
        row.appendChild(actions);
        scannedList.appendChild(row);
      });
    }

    async function loadScannedKeys() {
      try {
        scannedKeys = await apiGetScannedKeys();
        renderScannedKeys();
      } catch (err) { showToast(err.message, 'error'); }
    }

    async function updateScanStatus() {
      try {
        var s = await apiScanStatus();
        if (s.running) {
          scanStatusEl.textContent = '⏳ Scan läuft…';
          scanBtn.disabled = true;
          scanBtn.innerHTML = '<i class="fa fa-spinner fa-spin"></i> Läuft…';
          // Polling starten wenn noch nicht aktiv
          if (!pollTimer) {
            pollTimer = setInterval(async function() {
              var st = await apiScanStatus();
              await loadScannedKeys();
              if (!st.running) {
                clearInterval(pollTimer);
                pollTimer = null;
                scanBtn.disabled = false;
                scanBtn.innerHTML = '<i class="fa fa-search"></i> Jetzt scannen';
                scanStatusEl.textContent = st.lastResult ? '✅ ' + st.lastResult : '';
              }
            }, 3000);
          }
        } else {
          scanBtn.disabled = false;
          scanBtn.innerHTML = '<i class="fa fa-search"></i> Jetzt scannen';
          if (s.lastResult) {
            var timeStr = s.lastRun ? new Date(s.lastRun).toLocaleString() + ' – ' : '';
            scanStatusEl.textContent = timeStr + s.lastResult;
          }
        }
      } catch (err) { /* ignore */ }
    }

    scanBtn.addEventListener('click', async function() {
      try {
        await apiTriggerScan();
        showToast('Scan gestartet');
        await updateScanStatus();
      } catch (err) {
        showToast(err.message, 'error');
      }
    });

    await loadScannedKeys();
    await updateScanStatus();
  },

  destroy() {
    // Polling stoppen wenn Seite verlassen wird
  }
});