// src/components/Sniffing.tsx
import {
  CheckCircleOutlined,
  ExclamationCircleOutlined,
  PlayCircleOutlined,
  PlusOutlined,
  ReloadOutlined,
  StopOutlined,
} from '@ant-design/icons';
import {
  Button,
  Card,
  Form,
  List,
  Modal,
  notification,
  Radio,
  Select,
  Space,
  Spin,
  Tag,
  Tooltip,
  Typography,
} from 'antd';
import { ReactElement, useMemo, useState } from 'react';
import { startSniffer, stopSniffer, stopSnifferByInterface } from '../api/apiClient';
import { BridgeInfo, InterfaceInfo } from '../types/network';
import { InterfaceSnifferStatus } from '../types/sniffer';

const { Text } = Typography;
const { Option } = Select;

interface SnifferManagerProps {
  interfaces: InterfaceInfo[];
  bridges: BridgeInfo[];
  statusMap: Record<string, InterfaceSnifferStatus>;
  refreshAll: () => Promise<void>;
  refreshStatus: () => Promise<void>;
  loading: boolean;
  statusLoading: boolean;
}

export default function SnifferManager(props: SnifferManagerProps): ReactElement {
  // local UI state

  // modal / form
  const [isModalOpen, setIsModalOpen] = useState(false);
  const [startMode, setStartMode] = useState<'interface' | 'bridge'>('interface');
  const [form] = Form.useForm();

  // derived entries
  const statusEntries = useMemo(
    () => Object.entries(props.statusMap) as [string, InterfaceSnifferStatus][],
    [props.statusMap],
  );

  // open/close modal
  const onOpenStartModal = () => {
    form.resetFields();
    setStartMode('interface');
    setIsModalOpen(true);
  };
  const onCloseModal = () => setIsModalOpen(false);

  // start submit
  const handleStartSubmit = async (values: any) => {
    const { target } = values;
    if (!target) {
      notification.warning({ message: 'Warning', description: 'Please select a target to start sniffing on.' });
      return;
    }
    try {
      const payload = startMode === 'interface' ? { interface: target } : { bridge: target };
      const res = await startSniffer(payload);
      notification.success({
        message: 'Sniffer started',
        description: `Sniffer started on ${target} (session ${res.session_id})`,
      });
      await props.refreshAll();
      setIsModalOpen(false);
    } catch (err: any) {
      console.error('startSniffer error', err);
      notification.error(err?.message ?? 'Failed to start sniffer');
    } finally {
    }
  };

  // stop all
  const handleStopAll = async () => {
    try {
      await stopSniffer();
      notification.success({
        message: 'All sniffers stopped',
      });
      await props.refreshStatus();
    } catch (err: any) {
      console.error('stopSniffer error', err);
      notification.error(err?.message ?? 'Failed to stop sniffers');
    } finally {
    }
  };

  // stop per-interface
  const handleStopFromList = async (ifaceName: string, session_id?: string | null) => {
    try {
      // prefer stop by interface
      await stopSnifferByInterface(ifaceName);
      notification.success({
        message: 'Sniffer stopped',
        description: `Sniffer stopped on interface ${ifaceName}`,
      });
      await props.refreshStatus();
      return;
    } catch (err: any) {
      console.error('stopSnifferByInterface error', err);
      // try stop by session as fallback
      if (session_id) {
        try {
          await stopSniffer({ session_id });
          notification.success({
            message: 'Sniffer stopped',
            description: `Sniffer stopped on interface ${ifaceName} (session ${session_id})`,
          });
          await props.refreshStatus();
          return;
        } catch (err2: any) {
          console.error('stopSniffer by session fallback failed', err2);
        }
      }
      notification.error({
        message: 'Failed to stop sniffer',
        description: err?.message ?? 'Failed to stop sniffer',
      });
    } finally {
    }
  };

  return (
    <div className="sniffing-manager">
      <Card
        title="Sniffer sessions"
        style={{ marginBottom: 16 }}
        extra={
          <Space>
            <Tooltip title="Start a new sniffer session">
              <Button icon={<PlusOutlined />} onClick={onOpenStartModal} />
            </Tooltip>

            <Tooltip title="Refresh status">
              <Button icon={<ReloadOutlined />} onClick={() => props.refreshStatus()} />
            </Tooltip>

            <Tooltip title="Stop all sniffers">
              <Button danger icon={<StopOutlined />} onClick={handleStopAll} />
            </Tooltip>
          </Space>
        }
      >
        {props.statusLoading ? (
          <div style={{ textAlign: 'center', padding: 24 }}>
            <Spin />
          </div>
        ) : statusEntries.length === 0 ? (
          <div style={{ padding: 12 }}>
            <Text type="secondary">No status information available.</Text>
          </div>
        ) : (
          <List
            dataSource={statusEntries}
            renderItem={([name, st]: [string, InterfaceSnifferStatus]) => {
              const running = st.running;
              const exists = st.exists;
              const up = st.up;
              const session_id = st.session_id ?? null;
              const session_label = st.session_label ?? null;

              return (
                <List.Item
                  actions={[
                    running ? (
                      <Button
                        key="stop"
                        size="small"
                        icon={<StopOutlined />}
                        onClick={() => handleStopFromList(name, session_id)}
                        disabled={props.loading}
                      >
                        Stop
                      </Button>
                    ) : (
                      <Button
                        key="start"
                        size="small"
                        type="primary"
                        icon={<PlayCircleOutlined />}
                        onClick={async () => {
                          // start on this interface
                          try {
                            const res = await startSniffer({ interface: name });
                            notification.success({
                              message: 'Sniffer started',
                              description: `Sniffer started on ${name} (session ${res.session_id})`,
                            });
                            await props.refreshStatus();
                          } catch (err: any) {
                            console.error('startSniffer quick', err);
                            notification.error({
                              message: 'Failed to start sniffer',
                              description: err?.message ?? 'Failed to start sniffer',
                            });
                          } finally {
                          }
                        }}
                      >
                        Start
                      </Button>
                    ),
                  ]}
                >
                  <List.Item.Meta
                    title={
                      <Space>
                        <Text strong>{name}</Text>
                        {running ? (
                          <Tag icon={<CheckCircleOutlined />} color="success">
                            running
                          </Tag>
                        ) : (
                          <Tag icon={<ExclamationCircleOutlined />} color="default">
                            stopped
                          </Tag>
                        )}

                        {!exists && <Tag color="error">missing</Tag>}
                        {exists && !up && <Tag color="warning">down</Tag>}
                        {exists && up && <Tag color="processing">up</Tag>}

                        {session_id && (
                          <Tag>
                            {session_label ? `${session_label}` : 'session'}:{' '}
                            <Text code copyable={{ text: session_id }}>
                              {session_id.slice(0, 8)}
                            </Text>
                          </Tag>
                        )}
                      </Space>
                    }
                    description={<Text type="secondary">interface: {name}</Text>}
                  />
                </List.Item>
              );
            }}
          />
        )}
      </Card>

      {/* Start sniffer modal */}
      <Modal
        title="Start sniffer session"
        open={isModalOpen}
        onCancel={onCloseModal}
        onOk={() => form.submit()}
        confirmLoading={props.loading}
        okText="Start"
      >
        <Form form={form} layout="vertical" onFinish={handleStartSubmit} initialValues={{ target: undefined }}>
          <Form.Item label="Mode" name="mode">
            <Radio.Group
              value={startMode}
              onChange={(e) => {
                setStartMode(e.target.value);
                form.setFieldsValue({ target: undefined });
              }}
            >
              <Radio value="interface">Interface</Radio>
              <Radio value="bridge">Bridge</Radio>
            </Radio.Group>
          </Form.Item>

          <Form.Item
            label={startMode === 'interface' ? 'Interface' : 'Bridge'}
            name="target"
            rules={[{ required: true, message: 'Please select a target' }]}
          >
            <Select
              showSearch
              placeholder={startMode === 'interface' ? 'Select interface' : 'Select bridge'}
              optionFilterProp="children"
              filterOption={(input, option) =>
                (option?.children as unknown as string)?.toLowerCase().includes(input.toLowerCase())
              }
            >
              {startMode === 'interface'
                ? props.interfaces.map((i) => (
                    <Option key={`if:${i.name}`} value={i.name}>
                      {i.name}
                    </Option>
                  ))
                : props.bridges.map((b) => (
                    <Option key={`br:${b.ifname}`} value={b.ifname}>
                      {b.ifname} ({b.members.map((m) => m.ifname).join(', ')})
                    </Option>
                  ))}
            </Select>
          </Form.Item>
        </Form>
      </Modal>
    </div>
  );
}