// ── API Keys Page (Admin) ──

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 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];
        if (key.isActive) parts.push('✅ Aktiv');
        metaSpan.textContent = parts.join(' · ');

        info.appendChild(nameSpan);
        info.appendChild(metaSpan);

        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);

        // Aktivieren/Deaktivieren
        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); });
          actions.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); });
          actions.appendChild(activateBtn);
        }

        // 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);
        list.appendChild(row);
      });
    }

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

    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();
  },

  destroy() {}
});