import { useState, useEffect } from 'react';
import { Plus, Trash2, Wifi, Shield, Activity, Settings } from 'lucide-react';
import { routingAPI } from '../services/api';

function Routing() {
  const [routingStatus, setRoutingStatus] = useState(null);
  const [isLoading, setIsLoading] = useState(true);
  const [activeTab, setActiveTab] = useState('overview');
  // NAT management state
  const [natRules, setNatRules] = useState([]);
  const [natLoading, setNatLoading] = useState(false);
  const [natError, setNatError] = useState(null);
  const [showNatForm, setShowNatForm] = useState(false);
  const [newNat, setNewNat] = useState({ source_network: '', target_interface: '', masquerade: true, nat_type: 'MASQUERADE', protocol: 'ALL', external_port: '', internal_ip: '', internal_port: '' });
  const [natSubmitting, setNatSubmitting] = useState(false);
  // Peer Routes management state
  const [peerRoutes, setPeerRoutes] = useState([]);
  const [peersLoading, setPeersLoading] = useState(false);
  const [peersError, setPeersError] = useState(null);
  const [showPeerForm, setShowPeerForm] = useState(false);
  const [newPeerRoute, setNewPeerRoute] = useState({ peer_name: '', peer_ip: '', allowed_networks: '', route_type: 'lan' });
  const [peerSubmitting, setPeerSubmitting] = useState(false);
  // Firewall Rules management state
  const [firewallRules, setFirewallRules] = useState([]);
  const [fwLoading, setFwLoading] = useState(false);
  const [fwError, setFwError] = useState(null);
  const [showFwForm, setShowFwForm] = useState(false);
  const [newFwRule, setNewFwRule] = useState({ rule_type: 'INPUT', source: '', destination: '', action: 'ACCEPT', protocol: 'ALL', port_range: '' });
  const [fwSubmitting, setFwSubmitting] = useState(false);
  // Network Configuration state
  const [networkStatus, setNetworkStatus] = useState(null);
  const [networkLoading, setNetworkLoading] = useState(false);
  const [networkError, setNetworkError] = useState(null);
  const [isSettingUp, setIsSettingUp] = useState(false);

  useEffect(() => {
    fetchRoutingStatus();
    fetchNatRules();
    fetchPeerRoutes();
    fetchFirewallRules();
    fetchNetworkStatus();
  }, []);

  const fetchRoutingStatus = async () => {
    try {
      const response = await routingAPI.getStatus();
      setRoutingStatus(response.data);
    } catch (error) {
      console.error('Failed to fetch routing status:', error);
    } finally {
      setIsLoading(false);
    }
  };

  const fetchNatRules = async () => {
    setNatLoading(true);
    setNatError(null);
    try {
      const response = await routingAPI.getNatRules();
      setNatRules(response.data.nat_rules || []);
    } catch (error) {
      setNatError('Failed to load NAT rules');
    } finally {
      setNatLoading(false);
    }
  };

  const fetchPeerRoutes = async () => {
    setPeersLoading(true);
    setPeersError(null);
    try {
      const response = await routingAPI.getPeerRoutes();
      setPeerRoutes(response.data.peer_routes || []);
    } catch (error) {
      setPeersError('Failed to load peer routes');
    } finally {
      setPeersLoading(false);
    }
  };

  const fetchFirewallRules = async () => {
    setFwLoading(true);
    setFwError(null);
    try {
      const response = await routingAPI.getFirewallRules();
      setFirewallRules(response.data.firewall_rules || []);
    } catch (error) {
      setFwError('Failed to load firewall rules');
    } finally {
      setFwLoading(false);
    }
  };

  const fetchNetworkStatus = async () => {
    setNetworkLoading(true);
    setNetworkError(null);
    try {
      const response = await fetch('http://localhost:3000/api/wireguard/network/status');
      if (response.ok) {
        const data = await response.json();
        setNetworkStatus(data);
      } else {
        throw new Error('Failed to fetch network status');
      }
    } catch (error) {
      console.error('Failed to fetch network status:', error);
      setNetworkError('Failed to fetch network status');
    } finally {
      setNetworkLoading(false);
    }
  };

  const setupNetworkConfiguration = async () => {
    setIsSettingUp(true);
    setNetworkError(null);
    try {
      const response = await fetch('http://localhost:3000/api/wireguard/network/setup', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
      });
      
      if (response.ok) {
        const data = await response.json();
        console.log('Network setup successful:', data);
        // Refresh network status
        await fetchNetworkStatus();
      } else {
        const errorData = await response.json();
        throw new Error(errorData.error || 'Failed to setup network configuration');
      }
    } catch (error) {
      console.error('Failed to setup network configuration:', error);
      setNetworkError(error.message);
    } finally {
      setIsSettingUp(false);
    }
  };

  const handleNatInputChange = (e) => {
    const { name, value, type, checked } = e.target;
    setNewNat((prev) => ({
      ...prev,
      [name]: type === 'checkbox' ? checked : value,
    }));
  };

  const handleAddNatRule = async (e) => {
    e.preventDefault();
    setNatSubmitting(true);
    setNatError(null);
    try {
      await routingAPI.addNatRule(newNat);
      setShowNatForm(false);
      setNewNat({ source_network: '', target_interface: '', masquerade: true, nat_type: 'MASQUERADE', protocol: 'ALL', external_port: '', internal_ip: '', internal_port: '' });
      fetchNatRules();
      fetchRoutingStatus();
    } catch (error) {
      setNatError('Failed to add NAT rule');
    } finally {
      setNatSubmitting(false);
    }
  };

  const handleDeleteNatRule = async (ruleId) => {
    if (!window.confirm('Delete this NAT rule?')) return;
    setNatLoading(true);
    setNatError(null);
    try {
      await routingAPI.deleteNatRule(ruleId);
      fetchNatRules();
      fetchRoutingStatus();
    } catch (error) {
      setNatError('Failed to delete NAT rule');
    } finally {
      setNatLoading(false);
    }
  };

  const handlePeerInputChange = (e) => {
    const { name, value } = e.target;
    setNewPeerRoute((prev) => ({ ...prev, [name]: value }));
  };

  const handleAddPeerRoute = async (e) => {
    e.preventDefault();
    setPeerSubmitting(true);
    setPeersError(null);
    try {
      // allowed_networks: comma-separated string to array
      const payload = {
        ...newPeerRoute,
        allowed_networks: newPeerRoute.allowed_networks.split(',').map((s) => s.trim()).filter(Boolean),
      };
      await routingAPI.addPeerRoute(payload);
      setShowPeerForm(false);
      setNewPeerRoute({ peer_name: '', peer_ip: '', allowed_networks: '', route_type: 'lan' });
      fetchPeerRoutes();
      fetchRoutingStatus();
    } catch (error) {
      setPeersError('Failed to add peer route');
    } finally {
      setPeerSubmitting(false);
    }
  };

  const handleDeletePeerRoute = async (peerName) => {
    if (!window.confirm('Delete this peer route?')) return;
    setPeersLoading(true);
    setPeersError(null);
    try {
      await routingAPI.deletePeerRoute(peerName);
      fetchPeerRoutes();
      fetchRoutingStatus();
    } catch (error) {
      setPeersError('Failed to delete peer route');
    } finally {
      setPeersLoading(false);
    }
  };

  const handleFwInputChange = (e) => {
    const { name, value } = e.target;
    setNewFwRule((prev) => ({ ...prev, [name]: value }));
  };

  const handleAddFwRule = async (e) => {
    e.preventDefault();
    setFwSubmitting(true);
    setFwError(null);
    try {
      const payload = { ...newFwRule };
      if (!payload.port) delete payload.port;
      await routingAPI.addFirewallRule(payload);
      setShowFwForm(false);
      setNewFwRule({ rule_type: 'INPUT', source: '', destination: '', action: 'ACCEPT', protocol: 'ALL', port_range: '' });
      fetchFirewallRules();
      fetchRoutingStatus();
    } catch (error) {
      setFwError('Failed to add firewall rule');
    } finally {
      setFwSubmitting(false);
    }
  };

  const handleDeleteFwRule = async (ruleId) => {
    if (!window.confirm('Delete this firewall rule?')) return;
    setFwLoading(true);
    setFwError(null);
    try {
      await routingAPI.deleteFirewallRule(ruleId);
      fetchFirewallRules();
      fetchRoutingStatus();
    } catch (error) {
      setFwError('Failed to delete firewall rule');
    } finally {
      setFwLoading(false);
    }
  };

  if (isLoading) {
    return (
      <div className="flex items-center justify-center h-64">
        <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-primary-600"></div>
      </div>
    );
  }

  const tabs = [
    { id: 'overview', name: 'Overview', icon: Activity },
    { id: 'network', name: 'Network Config', icon: Wifi },
    { id: 'nat', name: 'NAT Rules', icon: Shield },
    { id: 'peers', name: 'Peer Routes', icon: Wifi },
    { id: 'firewall', name: 'Firewall', icon: Settings },
  ];

  return (
    <div>
      <div className="mb-8">
        <h1 className="text-2xl font-bold text-gray-900">Routing & Gateway</h1>
        <p className="mt-2 text-gray-600">
          Manage VPN gateway, NAT rules, and routing configuration
        </p>
      </div>

      {/* Status Overview */}
      {routingStatus && (
        <div className="mb-8">
          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
            <div className="card">
              <div className="flex items-center">
                <Shield className="h-8 w-8 text-primary-500" />
                <div className="ml-4">
                  <p className="text-sm font-medium text-gray-500">NAT Rules</p>
                  <p className="text-lg font-semibold text-gray-900">
                    {routingStatus.nat_rules_count || 0}
                  </p>
                </div>
              </div>
            </div>
            
            <div className="card">
              <div className="flex items-center">
                <Wifi className="h-8 w-8 text-primary-500" />
                <div className="ml-4">
                  <p className="text-sm font-medium text-gray-500">Peer Routes</p>
                  <p className="text-lg font-semibold text-gray-900">
                    {routingStatus.peer_routes_count || 0}
                  </p>
                </div>
              </div>
            </div>
            
            <div className="card">
              <div className="flex items-center">
                <Settings className="h-8 w-8 text-primary-500" />
                <div className="ml-4">
                  <p className="text-sm font-medium text-gray-500">Firewall Rules</p>
                  <p className="text-lg font-semibold text-gray-900">
                    {routingStatus.firewall_rules_count || 0}
                  </p>
                </div>
              </div>
            </div>
            
            <div className="card">
              <div className="flex items-center">
                <Activity className="h-8 w-8 text-primary-500" />
                <div className="ml-4">
                  <p className="text-sm font-medium text-gray-500">Exit Nodes</p>
                  <p className="text-lg font-semibold text-gray-900">
                    {routingStatus.exit_nodes_count || 0}
                  </p>
                </div>
              </div>
            </div>
          </div>
        </div>
      )}

      {/* Tabs */}
      <div className="mb-6">
        <nav className="flex space-x-8">
          {tabs.map((tab) => (
            <button
              key={tab.id}
              onClick={() => setActiveTab(tab.id)}
              className={`flex items-center px-1 py-2 border-b-2 font-medium text-sm ${
                activeTab === tab.id
                  ? 'border-primary-500 text-primary-600'
                  : 'border-transparent text-gray-500 hover:text-gray-700 hover:border-gray-300'
              }`}
            >
              <tab.icon className="h-4 w-4 mr-2" />
              {tab.name}
            </button>
          ))}
        </nav>
      </div>

      {/* Tab Content */}
      <div className="card">
        {activeTab === 'overview' && (
          <div>
            <h3 className="text-lg font-medium text-gray-900 mb-4">Routing Overview</h3>
            {routingStatus?.routing_table && routingStatus.routing_table.length > 0 ? (
              <div className="space-y-2">
                {routingStatus.routing_table.map((route, index) => (
                  <div key={index} className="flex items-center justify-between p-3 bg-gray-50 rounded-lg">
                    <div className="flex items-center">
                      <Wifi className="h-4 w-4 text-primary-500 mr-2" />
                      <span className="text-sm font-medium text-gray-900">
                        {route.route}
                      </span>
                    </div>
                    <div className="text-xs text-gray-500">
                      {route.parsed?.via && `via ${route.parsed.via}`}
                    </div>
                  </div>
                ))}
              </div>
            ) : (
              <p className="text-gray-500">No routing table entries available.</p>
            )}
          </div>
        )}

        {activeTab === 'network' && (
          <div>
            <div className="flex justify-between items-center mb-4">
              <h3 className="text-lg font-medium text-gray-900">Network Configuration</h3>
              <button 
                className="btn btn-primary flex items-center" 
                onClick={setupNetworkConfiguration}
                disabled={isSettingUp}
              >
                {isSettingUp ? (
                  <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-white mr-2"></div>
                ) : (
                  <Settings className="h-4 w-4 mr-2" />
                )}
                {isSettingUp ? 'Setting up...' : 'Setup Network'}
              </button>
            </div>

            {networkError && (
              <div className="mb-4 p-4 bg-red-50 border border-red-200 rounded-lg">
                <p className="text-red-800">{networkError}</p>
              </div>
            )}

            {networkLoading ? (
              <div className="flex justify-center items-center py-8">
                <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-primary-600"></div>
              </div>
            ) : networkStatus ? (
              <div className="space-y-6">
                {/* Network Status Cards */}
                <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
                  <div className="bg-white p-4 rounded-lg border border-gray-200">
                    <div className="flex items-center">
                      <div className={`w-3 h-3 rounded-full mr-3 ${networkStatus.ip_forwarding ? 'bg-green-400' : 'bg-red-400'}`}></div>
                      <div>
                        <p className="text-sm font-medium text-gray-900">IP Forwarding</p>
                        <p className="text-xs text-gray-500">{networkStatus.ip_forwarding ? 'Enabled' : 'Disabled'}</p>
                      </div>
                    </div>
                  </div>

                  <div className="bg-white p-4 rounded-lg border border-gray-200">
                    <div className="flex items-center">
                      <div className={`w-3 h-3 rounded-full mr-3 ${networkStatus.interface_status ? 'bg-green-400' : 'bg-red-400'}`}></div>
                      <div>
                        <p className="text-sm font-medium text-gray-900">WireGuard Interface</p>
                        <p className="text-xs text-gray-500">{networkStatus.interface_status ? 'Up' : 'Down'}</p>
                      </div>
                    </div>
                  </div>

                  <div className="bg-white p-4 rounded-lg border border-gray-200">
                    <div className="flex items-center">
                      <div className={`w-3 h-3 rounded-full mr-3 ${networkStatus.nat_rules ? 'bg-green-400' : 'bg-red-400'}`}></div>
                      <div>
                        <p className="text-sm font-medium text-gray-900">NAT Rules</p>
                        <p className="text-xs text-gray-500">{networkStatus.nat_rules ? 'Configured' : 'Missing'}</p>
                      </div>
                    </div>
                  </div>

                  <div className="bg-white p-4 rounded-lg border border-gray-200">
                    <div className="flex items-center">
                      <div className={`w-3 h-3 rounded-full mr-3 ${networkStatus.forwarding_rules ? 'bg-green-400' : 'bg-red-400'}`}></div>
                      <div>
                        <p className="text-sm font-medium text-gray-900">Forwarding Rules</p>
                        <p className="text-xs text-gray-500">{networkStatus.forwarding_rules ? 'Configured' : 'Missing'}</p>
                      </div>
                    </div>
                  </div>
                </div>

                {/* Configuration Details */}
                <div className="bg-gray-50 p-4 rounded-lg">
                  <h4 className="text-md font-medium text-gray-900 mb-3">Configuration Details</h4>
                  <div className="space-y-2 text-sm">
                    <div className="flex justify-between">
                      <span className="text-gray-600">Last Updated:</span>
                      <span className="text-gray-900">{new Date(networkStatus.timestamp).toLocaleString()}</span>
                    </div>
                    <div className="flex justify-between">
                      <span className="text-gray-600">IP Forwarding:</span>
                      <span className={`font-medium ${networkStatus.ip_forwarding ? 'text-green-600' : 'text-red-600'}`}>
                        {networkStatus.ip_forwarding ? 'Enabled' : 'Disabled'}
                      </span>
                    </div>
                    <div className="flex justify-between">
                      <span className="text-gray-600">WireGuard Interface:</span>
                      <span className={`font-medium ${networkStatus.interface_status ? 'text-green-600' : 'text-red-600'}`}>
                        {networkStatus.interface_status ? 'Up (wg0)' : 'Down'}
                      </span>
                    </div>
                    <div className="flex justify-between">
                      <span className="text-gray-600">NAT Translation:</span>
                      <span className={`font-medium ${networkStatus.nat_rules ? 'text-green-600' : 'text-red-600'}`}>
                        {networkStatus.nat_rules ? 'Active' : 'Not Configured'}
                      </span>
                    </div>
                    <div className="flex justify-between">
                      <span className="text-gray-600">Traffic Forwarding:</span>
                      <span className={`font-medium ${networkStatus.forwarding_rules ? 'text-green-600' : 'text-red-600'}`}>
                        {networkStatus.forwarding_rules ? 'Allowed' : 'Blocked'}
                      </span>
                    </div>
                  </div>
                </div>

                {/* Quick Actions */}
                <div className="bg-blue-50 p-4 rounded-lg">
                  <h4 className="text-md font-medium text-blue-900 mb-2">Quick Actions</h4>
                  <div className="flex flex-wrap gap-2">
                    <button 
                      className="btn btn-sm btn-outline"
                      onClick={fetchNetworkStatus}
                    >
                      Refresh Status
                    </button>
                    <button 
                      className="btn btn-sm btn-primary"
                      onClick={setupNetworkConfiguration}
                      disabled={isSettingUp}
                    >
                      {isSettingUp ? 'Setting up...' : 'Setup Network'}
                    </button>
                  </div>
                </div>
              </div>
            ) : (
              <div className="text-center py-8">
                <p className="text-gray-500">Failed to load network status</p>
                <button 
                  className="btn btn-primary mt-2"
                  onClick={fetchNetworkStatus}
                >
                  Retry
                </button>
              </div>
            )}
          </div>
        )}

        {activeTab === 'nat' && (
          <div>
            <div className="flex justify-between items-center mb-4">
              <h3 className="text-lg font-medium text-gray-900">NAT Rules</h3>
              <button className="btn btn-primary flex items-center" onClick={() => setShowNatForm((v) => !v)}>
                <Plus className="h-4 w-4 mr-2" />
                {showNatForm ? 'Cancel' : 'Add NAT Rule'}
              </button>
            </div>
            {showNatForm && (
              <form className="mb-4 p-4 bg-gray-50 rounded-lg" onSubmit={handleAddNatRule}>
                <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
                  <input
                    type="text"
                    name="source_network"
                    placeholder="Source Network (e.g. 192.168.1.0/24)"
                    className="input"
                    value={newNat.source_network}
                    onChange={handleNatInputChange}
                    required
                  />
                  <input
                    type="text"
                    name="target_interface"
                    placeholder="Target Interface (e.g. eth0)"
                    className="input"
                    value={newNat.target_interface}
                    onChange={handleNatInputChange}
                    required
                  />
                  <label className="flex items-center space-x-2">
                    <input
                      type="checkbox"
                      name="masquerade"
                      checked={newNat.masquerade}
                      onChange={handleNatInputChange}
                    />
                    <span>Masquerade</span>
                  </label>
                </div>
                <div className="grid grid-cols-1 md:grid-cols-4 gap-4 mt-4">
                  <select
                    name="nat_type"
                    className="input"
                    value={newNat.nat_type}
                    onChange={handleNatInputChange}
                  >
                    <option value="MASQUERADE">MASQUERADE</option>
                    <option value="SNAT">SNAT</option>
                    <option value="DNAT">DNAT (Port Forward)</option>
                  </select>
                  <select
                    name="protocol"
                    className="input"
                    value={newNat.protocol}
                    onChange={handleNatInputChange}
                  >
                    <option value="ALL">ALL</option>
                    <option value="TCP">TCP</option>
                    <option value="UDP">UDP</option>
                  </select>
                  <input
                    type="text"
                    name="external_port"
                    placeholder="External Port (for DNAT)"
                    className="input"
                    value={newNat.external_port}
                    onChange={handleNatInputChange}
                  />
                  <input
                    type="text"
                    name="internal_ip"
                    placeholder="Internal IP (for DNAT)"
                    className="input"
                    value={newNat.internal_ip}
                    onChange={handleNatInputChange}
                  />
                  <input
                    type="text"
                    name="internal_port"
                    placeholder="Internal Port (for DNAT)"
                    className="input"
                    value={newNat.internal_port}
                    onChange={handleNatInputChange}
                  />
                </div>
                <div className="text-xs text-gray-500 mt-2">
                  <span>Advanced: Use DNAT for port forwarding, specify protocol/ports as needed.</span>
                </div>
                <div className="mt-4 flex justify-end">
                  <button type="submit" className="btn btn-primary" disabled={natSubmitting}>
                    {natSubmitting ? 'Adding...' : 'Add Rule'}
                  </button>
                </div>
                {natError && <p className="text-red-500 mt-2">{natError}</p>}
              </form>
            )}
            {natLoading ? (
              <div className="py-8 text-center text-gray-500">Loading NAT rules...</div>
            ) : natError ? (
              <div className="py-8 text-center text-red-500">{natError}</div>
            ) : natRules.length === 0 ? (
              <div className="py-8 text-center text-gray-500">No NAT rules configured.</div>
            ) : (
              <table className="min-w-full bg-white rounded-lg overflow-hidden">
                <thead>
                  <tr>
                    <th className="px-4 py-2 text-left">Source Network</th>
                    <th className="px-4 py-2 text-left">Target Interface</th>
                    <th className="px-4 py-2 text-left">Masquerade</th>
                    <th className="px-4 py-2 text-left">Type</th>
                    <th className="px-4 py-2 text-left">Protocol</th>
                    <th className="px-4 py-2 text-left">Ext Port</th>
                    <th className="px-4 py-2 text-left">Int IP</th>
                    <th className="px-4 py-2 text-left">Int Port</th>
                    <th className="px-4 py-2"></th>
                  </tr>
                </thead>
                <tbody>
                  {natRules.map((rule, idx) => (
                    <tr key={rule.id || idx} className="border-t">
                      <td className="px-4 py-2">{rule.source_network}</td>
                      <td className="px-4 py-2">{rule.target_interface}</td>
                      <td className="px-4 py-2">{rule.masquerade ? 'Yes' : 'No'}</td>
                      <td className="px-4 py-2">{rule.nat_type || 'MASQUERADE'}</td>
                      <td className="px-4 py-2">{rule.protocol || 'ALL'}</td>
                      <td className="px-4 py-2">{rule.external_port || '-'}</td>
                      <td className="px-4 py-2">{rule.internal_ip || '-'}</td>
                      <td className="px-4 py-2">{rule.internal_port || '-'}</td>
                      <td className="px-4 py-2 text-right">
                        <button
                          className="btn btn-danger btn-sm flex items-center"
                          onClick={() => handleDeleteNatRule(rule.id || idx)}
                        >
                          <Trash2 className="h-4 w-4 mr-1" /> Delete
                        </button>
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            )}
          </div>
        )}

        {activeTab === 'peers' && (
          <div>
            <div className="flex justify-between items-center mb-4">
              <h3 className="text-lg font-medium text-gray-900">Peer Routes</h3>
              <button className="btn btn-primary flex items-center" onClick={() => setShowPeerForm((v) => !v)}>
                <Plus className="h-4 w-4 mr-2" />
                {showPeerForm ? 'Cancel' : 'Add Peer Route'}
              </button>
            </div>
            {showPeerForm && (
              <form className="mb-4 p-4 bg-gray-50 rounded-lg" onSubmit={handleAddPeerRoute}>
                <div className="grid grid-cols-1 md:grid-cols-4 gap-4">
                  <input
                    type="text"
                    name="peer_name"
                    placeholder="Peer Name"
                    className="input"
                    value={newPeerRoute.peer_name}
                    onChange={handlePeerInputChange}
                    required
                  />
                  <input
                    type="text"
                    name="peer_ip"
                    placeholder="Peer IP (e.g. 10.0.0.2)"
                    className="input"
                    value={newPeerRoute.peer_ip}
                    onChange={handlePeerInputChange}
                    required
                  />
                  <input
                    type="text"
                    name="allowed_networks"
                    placeholder="Allowed Networks (comma-separated)"
                    className="input"
                    value={newPeerRoute.allowed_networks}
                    onChange={handlePeerInputChange}
                  />
                  <select
                    name="route_type"
                    className="input"
                    value={newPeerRoute.route_type}
                    onChange={handlePeerInputChange}
                  >
                    <option value="lan">LAN</option>
                    <option value="exit">Exit</option>
                    <option value="bridge">Bridge</option>
                    <option value="split">Split</option>
                  </select>
                </div>
                <div className="mt-4 flex justify-end">
                  <button type="submit" className="btn btn-primary" disabled={peerSubmitting}>
                    {peerSubmitting ? 'Adding...' : 'Add Route'}
                  </button>
                </div>
                {peersError && <p className="text-red-500 mt-2">{peersError}</p>}
              </form>
            )}
            {peersLoading ? (
              <div className="py-8 text-center text-gray-500">Loading peer routes...</div>
            ) : peersError ? (
              <div className="py-8 text-center text-red-500">{peersError}</div>
            ) : peerRoutes.length === 0 ? (
              <div className="py-8 text-center text-gray-500">No peer routes configured.</div>
            ) : (
              <table className="min-w-full bg-white rounded-lg overflow-hidden">
                <thead>
                  <tr>
                    <th className="px-4 py-2 text-left">Peer Name</th>
                    <th className="px-4 py-2 text-left">Peer IP</th>
                    <th className="px-4 py-2 text-left">Allowed Networks</th>
                    <th className="px-4 py-2 text-left">Route Type</th>
                    <th className="px-4 py-2"></th>
                  </tr>
                </thead>
                <tbody>
                  {peerRoutes.map((route, idx) => (
                    <tr key={route.peer_name || idx} className="border-t">
                      <td className="px-4 py-2">{route.peer_name}</td>
                      <td className="px-4 py-2">{route.peer_ip}</td>
                      <td className="px-4 py-2">{Array.isArray(route.allowed_networks) ? route.allowed_networks.join(', ') : route.allowed_networks}</td>
                      <td className="px-4 py-2">{route.route_type}</td>
                      <td className="px-4 py-2 text-right">
                        <button
                          className="btn btn-danger btn-sm flex items-center"
                          onClick={() => handleDeletePeerRoute(route.peer_name)}
                        >
                          <Trash2 className="h-4 w-4 mr-1" /> Delete
                        </button>
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            )}
          </div>
        )}

        {activeTab === 'firewall' && (
          <div>
            <div className="flex justify-between items-center mb-4">
              <h3 className="text-lg font-medium text-gray-900">Firewall Rules</h3>
              <button className="btn btn-primary flex items-center" onClick={() => setShowFwForm((v) => !v)}>
                <Plus className="h-4 w-4 mr-2" />
                {showFwForm ? 'Cancel' : 'Add Firewall Rule'}
              </button>
            </div>
            {showFwForm && (
              <form className="mb-4 p-4 bg-gray-50 rounded-lg" onSubmit={handleAddFwRule}>
                <div className="grid grid-cols-1 md:grid-cols-6 gap-4">
                  <select
                    name="rule_type"
                    className="input"
                    value={newFwRule.rule_type}
                    onChange={handleFwInputChange}
                  >
                    <option value="INPUT">INPUT</option>
                    <option value="OUTPUT">OUTPUT</option>
                    <option value="FORWARD">FORWARD</option>
                  </select>
                  <input
                    type="text"
                    name="source"
                    placeholder="Source (e.g. 192.168.1.0/24)"
                    className="input"
                    value={newFwRule.source}
                    onChange={handleFwInputChange}
                    required
                  />
                  <input
                    type="text"
                    name="destination"
                    placeholder="Destination (e.g. 0.0.0.0/0)"
                    className="input"
                    value={newFwRule.destination}
                    onChange={handleFwInputChange}
                    required
                  />
                  <select
                    name="protocol"
                    className="input"
                    value={newFwRule.protocol}
                    onChange={handleFwInputChange}
                  >
                    <option value="ALL">ALL</option>
                    <option value="TCP">TCP</option>
                    <option value="UDP">UDP</option>
                    <option value="ICMP">ICMP</option>
                  </select>
                  <input
                    type="text"
                    name="port_range"
                    placeholder="Port or Range (e.g. 80 or 1000-2000)"
                    className="input"
                    value={newFwRule.port_range}
                    onChange={handleFwInputChange}
                  />
                  <select
                    name="action"
                    className="input"
                    value={newFwRule.action}
                    onChange={handleFwInputChange}
                  >
                    <option value="ACCEPT">ACCEPT</option>
                    <option value="DROP">DROP</option>
                    <option value="REJECT">REJECT</option>
                  </select>
                </div>
                <div className="text-xs text-gray-500 mt-2">
                  <span>Advanced: Specify protocol and port/range for granular matching.</span>
                </div>
                <div className="mt-4 flex justify-end">
                  <button type="submit" className="btn btn-primary" disabled={fwSubmitting}>
                    {fwSubmitting ? 'Adding...' : 'Add Rule'}
                  </button>
                </div>
                {fwError && <p className="text-red-500 mt-2">{fwError}</p>}
              </form>
            )}
            {fwLoading ? (
              <div className="py-8 text-center text-gray-500">Loading firewall rules...</div>
            ) : fwError ? (
              <div className="py-8 text-center text-red-500">{fwError}</div>
            ) : firewallRules.length === 0 ? (
              <div className="py-8 text-center text-gray-500">No firewall rules configured.</div>
            ) : (
              <table className="min-w-full bg-white rounded-lg overflow-hidden">
                <thead>
                  <tr>
                    <th className="px-4 py-2 text-left">Rule Type</th>
                    <th className="px-4 py-2 text-left">Source</th>
                    <th className="px-4 py-2 text-left">Destination</th>
                    <th className="px-4 py-2 text-left">Protocol</th>
                    <th className="px-4 py-2 text-left">Port/Range</th>
                    <th className="px-4 py-2 text-left">Action</th>
                    <th className="px-4 py-2"></th>
                  </tr>
                </thead>
                <tbody>
                  {firewallRules.map((rule, idx) => (
                    <tr key={rule.id || idx} className="border-t">
                      <td className="px-4 py-2">{rule.rule_type}</td>
                      <td className="px-4 py-2">{rule.source}</td>
                      <td className="px-4 py-2">{rule.destination}</td>
                      <td className="px-4 py-2">{rule.protocol || 'ALL'}</td>
                      <td className="px-4 py-2">{rule.port_range || '-'}</td>
                      <td className="px-4 py-2">{rule.action}</td>
                      <td className="px-4 py-2 text-right">
                        <button
                          className="btn btn-danger btn-sm flex items-center"
                          onClick={() => handleDeleteFwRule(rule.id || idx)}
                        >
                          <Trash2 className="h-4 w-4 mr-1" /> Delete
                        </button>
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            )}
          </div>
        )}
      </div>
    </div>
  );
}

export default Routing;