import React, { useEffect } from "react";
import {
   Card,
   Input,
   Slider,
   InputNumber,
   Switch,
   Select,
   Row,
   Col,
   Button,
   message,
   Space,
   Typography,
   Spin,
   Alert,
} from "antd";
import {
   SettingOutlined,
   SaveOutlined,
   DatabaseOutlined,
   ClockCircleOutlined,
   BellOutlined,
   FilterOutlined,
   CloudUploadOutlined,
   SyncOutlined,
} from "@ant-design/icons";
import useAdvancedSettings from "../hooks/useAdvancedSettings";

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

const AdvancedSettings = ({ onLogout }) => {
   // 使用高级配置 Hook
   const {
      settings,
      loading,
      isConnected,
      isReady,
      fetchAllSettings,
      saveAllSettings,
      resetSettings,
      updateLocalSettings,
   } = useAdvancedSettings();

   // 只在首次 isReady 变为 true 时自动拉取配置
   const hasFetchedRef = React.useRef(false);
   useEffect(() => {
      if (isReady && !hasFetchedRef.current) {
         fetchAllSettings();
         hasFetchedRef.current = true;
      }
   }, [isReady, fetchAllSettings]);

   // IP 地址验证函数
   const validateIP = (ip) => {
      if (!ip) return true; // 允许空值
      const ipRegex = /^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;

      // 如果匹配 IP 格式（包含点分十进制），则严格按 IP 验证
      if (/^\d+\.\d+\.\d+\.\d+$/.test(ip)) {
         return ipRegex.test(ip);
      }

      // 否则按域名验证
      const domainRegex = /^[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;
      return domainRegex.test(ip);
   };

   // 端口验证函数
   const validatePort = (port) => {
      const portNum = Number(port);
      return !isNaN(portNum) && portNum >= 1 && portNum <= 65535;
   };

   // 从 settings 中提取配置
   const deviceId = settings.deviceId;
   const fps = settings.dataFps;
   const enableOfflineAlert = settings.alertConfig?.enable ?? false;
   const offlineThreshold = settings.alertConfig?.intervalSec ?? 60;
   const enableFiltering = settings.filterConfig?.enable ?? true;
   const filterMethod = settings.filterConfig?.method ?? 'median';
   const windowSize = settings.filterConfig?.size ?? 5;
   const filterThreshold = settings.filterConfig?.threshold ?? 0.1;
   const flowThreshold = settings.filterConfig?.imgThreshold ?? 10.0;
   const enableMqtt = settings.mqttConfig?.enable ?? true;
   const brokerAddress = settings.mqttConfig?.mqtt?.broker ?? '';
   const mqttPort = settings.mqttConfig?.mqtt?.port ?? 1883;
   const mqttTopic = settings.mqttConfig?.mqtt?.topic ?? '';
   const mqttClientId = settings.mqttConfig?.mqtt?.client_id ?? '';
   const mqttUsername = settings.mqttConfig?.mqtt?.username ?? '';
   const mqttPassword = settings.mqttConfig?.mqtt?.password ?? '';

   // 更新本地状态的辅助函数
   const setDeviceId = (value) => updateLocalSettings({ deviceId: value });
   const setFps = (value) => updateLocalSettings({ dataFps: value });
   const setEnableOfflineAlert = (value) =>
      updateLocalSettings({
         alertConfig: {
            enable: value,
            intervalSec: settings.alertConfig?.intervalSec ?? 60
         },
      });
   const setOfflineThreshold = (value) =>
      updateLocalSettings({
         alertConfig: {
            enable: settings.alertConfig?.enable ?? false,
            intervalSec: value
         },
      });
   const setEnableFiltering = (value) =>
      updateLocalSettings({
         filterConfig: { ...settings.filterConfig, enable: value },
      });
   const setFilterMethod = (value) =>
      updateLocalSettings({
         filterConfig: { ...settings.filterConfig, method: value },
      });
   const setWindowSize = (value) =>
      updateLocalSettings({
         filterConfig: { ...settings.filterConfig, size: value },
      });
   const setFilterThreshold = (value) =>
      updateLocalSettings({
         filterConfig: { ...settings.filterConfig, threshold: -Math.abs(value) },
      });
   const setFlowThreshold = (value) =>
      updateLocalSettings({
         filterConfig: { ...settings.filterConfig, imgThreshold: value },
      });
   const setEnableMqtt = (value) =>
      updateLocalSettings({
         mqttConfig: {
            enable: value,
            mqtt: settings.mqttConfig?.mqtt ?? {
               broker: '',
               port: 1883,
               topic: '',
               username: '',
               password: '',
               client_id: ''
            }
         },
      });
   const setBrokerAddress = (value) =>
      updateLocalSettings({
         mqttConfig: {
            ...settings.mqttConfig,
            mqtt: {
               ...(settings.mqttConfig?.mqtt ?? {}),
               broker: value
            },
         },
      });
   const setMqttPort = (value) =>
      updateLocalSettings({
         mqttConfig: {
            ...settings.mqttConfig,
            mqtt: {
               ...(settings.mqttConfig?.mqtt ?? {}),
               port: value
            },
         },
      });
   const setMqttTopic = (value) =>
      updateLocalSettings({
         mqttConfig: {
            ...settings.mqttConfig,
            mqtt: {
               ...(settings.mqttConfig?.mqtt ?? {}),
               topic: value
            },
         },
      });
   const setMqttClientId = (value) =>
      updateLocalSettings({
         mqttConfig: {
            ...settings.mqttConfig,
            mqtt: {
               ...(settings.mqttConfig?.mqtt ?? {}),
               client_id: value
            },
         },
      });
   const setMqttUsername = (value) =>
      updateLocalSettings({
         mqttConfig: {
            ...settings.mqttConfig,
            mqtt: {
               ...(settings.mqttConfig?.mqtt ?? {}),
               username: value
            },
         },
      });
   const setMqttPassword = (value) =>
      updateLocalSettings({
         mqttConfig: {
            ...settings.mqttConfig,
            mqtt: {
               ...(settings.mqttConfig?.mqtt ?? {}),
               password: value
            },
         },
      });

   const [saving, setSaving] = React.useState(false);

   const handleSave = async () => {
      if (enableMqtt) {
         if (brokerAddress && !validateIP(brokerAddress)) {
            message.error('Broker 地址格式不正确，请检查后重试');
            return;
         }
         if (mqttPort && !validatePort(mqttPort)) {
            message.error('端口号格式不正确，请检查后重试');
            return;
         }
         if (!brokerAddress) {
            message.warning('启用 MQTT 时请填写 Broker 地址');
            return;
         }
      }

      try {
         setSaving(true);
         const success = await saveAllSettings();

         if (!success) {
            console.log('保存操作未完全成功');
         }
      } catch (error) {
         console.error('保存配置时发生异常:', error);
         message.error('保存配置时发生异常，请重试');
      } finally {
         setSaving(false);
      }
   };

   const handleReset = () => {
      fetchAllSettings();
   };

   return (
      <Spin spinning={loading || saving} tip={saving ? "正在保存配置..." : "正在加载配置..."}>
         <div
            style={{
               padding: "12px",
               backgroundColor: "#f5f7fa",
               minHeight: "calc(100vh - 92px)",
            }}
         >
            {/* WebSocket 连接状态提示 */}
            {!isConnected && (
               <Alert
                  message="WebSocket 未连接"
                  description="当前未连接到设备，无法读取或保存配置。请检查网络连接。"
                  type="warning"
                  showIcon
                  style={{ marginBottom: 12, borderRadius: 8 }}
               />
            )}

            <Card
               style={{
                  marginBottom: 12,
                  background:
                     "linear-gradient(135deg, #01152cff 0%, #063b77ff 100%)",
                  borderRadius: 12,
               }}
               styles={{ padding: 12 }}
            >
               <Row justify="space-between" align="middle">
                  <Col>
                     <Space direction="vertical" size={4}>
                        <Title
                           level={2}
                           style={{
                              margin: 0,
                              color: "white",
                              display: "flex",
                              alignItems: "center",
                              gap: 12,
                           }}
                        >
                           <SettingOutlined />
                           高级参数配置
                        </Title>
                        <Text
                           style={{
                              color: "rgba(255,255,255,0.85)",
                              fontSize: 14,
                           }}
                        >
                           针对下位机运行的参数配置，修改后请及时保存(慎用)
                        </Text>

                     </Space>
                  </Col>
                  <Col>
                     <Space size="middle">
                        <Button
                           icon={<SyncOutlined spin={loading} />}
                           onClick={handleReset}
                           size="large"
                           disabled={!isConnected || loading}
                           style={{ height: 42, borderRadius: 8 }}
                        >
                           刷新配置
                        </Button>
                        <Button
                           type="primary"
                           icon={<SaveOutlined />}
                           onClick={handleSave}
                           size="large"
                           disabled={!isConnected || loading || saving}
                           loading={saving}
                           style={{
                              height: 42,
                              borderRadius: 8,
                              background: "white",
                              color: "#667eea",
                              borderColor: "white",
                           }}
                        >
                           {saving ? '保存中...' : '保存更改'}
                        </Button>
                     </Space>
                  </Col>
               </Row>
            </Card>

         <Row gutter={12}>
            <Col xs={12} lg={12}>
               <Card
                  title={
                     <Space>
                        <DatabaseOutlined style={{ color: "#667eea" }} />
                        <span>基础设备信息</span>
                     </Space>
                  }

                  style={{
                     marginBottom: 12,
                     borderRadius: 12,
                     paddingLeft: 24,
                     paddingRight: 24,
                  }}
               >
                  <div style={{ marginBottom: 4, fontWeight: 500 }}>
                     设备编码
                  </div>
                  <Input
                     value={deviceId}
                     onChange={(e) => setDeviceId(e.target.value)}
                     placeholder="请输入设备编码"
                     size="large"
                     style={{ borderRadius: 8 }}
                  />
               </Card>

               <Card
                  title={
                     <Space>
                        <ClockCircleOutlined style={{ color: "#667eea" }} />
                        <span>数据帧率 (FPS)</span>
                     </Space>
                  }

                  style={{
                     marginBottom: 12,
                     borderRadius: 12,
                     paddingLeft: 24,
                     paddingRight: 24,
                  }}
               >
                  <div style={{ marginBottom: 12, fontWeight: 500 }}>
                     数据帧率
                  </div>
                  <Row gutter={12} align="middle">
                     <Col span={18}>
                        <Slider
                           min={1}
                           max={30}
                           value={fps}
                           onChange={setFps}
                           marks={{ 1: "1 Hz", 30: "30 Hz" }}
                        />
                     </Col>
                     <Col span={6}>
                        <InputNumber
                           min={1}
                           max={30}
                           value={fps}
                           onChange={setFps}
                           style={{ width: "100%", borderRadius: 8 }}
                           size="large"
                        />
                     </Col>
                  </Row>
                  <Text type="secondary" style={{ fontSize: 12 }}>
                     有效范围 1~30 Hz
                  </Text>
               </Card>

               <Card
                  title={
                     <Space>
                        <BellOutlined style={{ color: "#667eea" }} />
                        <span>异常监控与报警</span>
                     </Space>
                  }

                  style={{
                     marginBottom: 12,
                     borderRadius: 12,
                     paddingLeft: 24,
                     paddingRight: 24,
                  }}
               >
                  <div
                     style={{
                        background:
                           "linear-gradient(135deg, #f5f7fa 0%, #e8eef5 100%)",
                        padding: 20,
                        borderRadius: 12,
                        marginBottom: 12,
                     }}
                  >
                     <Row justify="space-between" align="middle">
                        <Col>
                           <Text strong>启用离线超时告警</Text>
                           <br />
                           <Text type="secondary" style={{ fontSize: 12 }}>
                              系统将按您设置的间隔周期持续检测：若连续离线时长达到整个周期，则会触发告警
                           </Text>
                        </Col>
                        <Col>
                           <Switch
                              checked={enableOfflineAlert}
                              onChange={setEnableOfflineAlert}
                           />
                        </Col>
                     </Row>
                  </div>
                  <div style={{ marginBottom: 4, fontWeight: 500 }}>
                     超时阈值
                  </div>
                  <InputNumber
                     min={10}
                     max={300}
                     value={offlineThreshold}
                     onChange={setOfflineThreshold}
                     size="large"
                     addonAfter="秒"
                     style={{ width: "100%", borderRadius: 8 }}
                  />
               </Card>
            </Col>

            <Col xs={12} lg={12}>
               <Card
                  title={
                     <Space>
                        <FilterOutlined style={{ color: "#667eea" }} />
                        <span>数据滤波与异常记录</span>
                     </Space>
                  }

                  style={{
                     marginBottom: 12,
                     borderRadius: 12,
                     paddingLeft: 24,
                     paddingRight: 24,
                  }}
               >
                  <div
                     style={{
                        background:
                           "linear-gradient(135deg, #f5f7fa 0%, #e8eef5 100%)",
                        padding: 20,
                        borderRadius: 12,
                        marginBottom: 20,
                     }}
                  >
                     <Row justify="space-between" align="middle">
                        <Col>
                           <Text strong>滤波配置</Text>
                           <br />
                           <Text type="secondary" style={{ fontSize: 12 }}>
                              启用数据滤波算法
                           </Text>
                        </Col>
                        <Col>
                           <Switch
                              checked={enableFiltering}
                              onChange={setEnableFiltering}
                              checkedChildren="已启用"
                              unCheckedChildren="已停用"
                           />
                        </Col>
                     </Row>
                  </div>
                  <Row gutter={[12, 12]}>
                     <Col span={12}>
                        <div style={{ marginBottom: 4, fontWeight: 500 }}>
                           滤波方法
                        </div>
                        <Select
                           value={filterMethod}
                           onChange={setFilterMethod}
                           size="large"
                           disabled={!enableFiltering}
                           style={{ width: "100%", borderRadius: 8 }}
                        >
                           <Option value="median">中值滤波</Option>
                        </Select>
                     </Col>
                     <Col span={12}>
                        <div style={{ marginBottom: 4, fontWeight: 500 }}>
                           窗口大小
                        </div>
                        <InputNumber
                           min={3}
                           max={21}
                           step={2}
                           value={windowSize}
                           onChange={setWindowSize}
                           size="large"
                           disabled={!enableFiltering}
                           style={{ width: "100%", borderRadius: 8 }}
                        />
                     </Col>
                     <Col span={12}>
                        <div style={{ marginBottom: 4, fontWeight: 500 }}>
                           滤波阈值
                        </div>
                        <InputNumber
                           value={filterThreshold}
                           onChange={setFilterThreshold}
                           addonAfter="mm"
                           size="large"
                           disabled={!enableFiltering}
                           style={{ width: "100%", borderRadius: 8 }}
                        />
                     </Col>
                     <Col span={12}>
                        <div style={{ marginBottom: 4, fontWeight: 500 }}>
                           波动阈值
                        </div>
                        <InputNumber
                           min={0}
                           max={100}
                           step={0.1}
                           value={flowThreshold}
                           onChange={setFlowThreshold}
                           addonAfter="mm"
                           size="large"
                           disabled={!enableFiltering}
                           style={{ width: "100%", borderRadius: 8 }}
                        />
                     </Col>
                  </Row>
               </Card>

               <Card
                  title={
                     <div
                        style={{
                           display: "flex",
                           justifyContent: "space-between",
                           alignItems: "center",
                        }}
                     >
                        <Space>
                           <CloudUploadOutlined style={{ color: "#667eea" }} />
                           <span>数据上报 (MQTT)</span>
                        </Space>
                        <Switch
                           checked={enableMqtt}
                           onChange={setEnableMqtt}
                           checkedChildren="启用"
                           unCheckedChildren="禁用"
                        />
                     </div>
                  }

                  style={{
                     borderRadius: 12,
                     paddingLeft: 24,
                     paddingRight: 24,
                  }}
               >
                  <Row gutter={[12, 12]}>
                     <Col span={12}>
                        <div style={{ marginBottom: 4, fontWeight: 500 }}>
                           Broker Address
                           <Text type="danger"> *</Text>
                        </div>
                        <Input
                           value={brokerAddress}
                           onChange={(e) => setBrokerAddress(e.target.value)}
                           placeholder="例如: 218.3.126.49 或 mqtt.example.com"
                           size="large"
                           disabled={!enableMqtt}
                           style={{
                              borderRadius: 8,
                              borderColor: brokerAddress && !validateIP(brokerAddress) ? '#ff4d4f' : undefined
                           }}
                           status={brokerAddress && !validateIP(brokerAddress) ? 'error' : undefined}
                        />
                        {brokerAddress && !validateIP(brokerAddress) && (
                           <Text type="danger" style={{ fontSize: 12 }}>
                              请输入有效的 IPv4 地址
                           </Text>
                        )}
                     </Col>
                     <Col span={8}>
                        <div style={{ marginBottom: 4, fontWeight: 500 }}>
                           Port
                           <Text type="danger"> *</Text>
                        </div>
                        <Input
                           value={mqttPort}
                           onChange={(e) => setMqttPort(e.target.value)}
                           placeholder="1883"
                           size="large"
                           disabled={!enableMqtt}
                           style={{
                              borderRadius: 8,
                              borderColor: mqttPort && !validatePort(mqttPort) ? '#ff4d4f' : undefined
                           }}
                           status={mqttPort && !validatePort(mqttPort) ? 'error' : undefined}
                        />
                        {mqttPort && !validatePort(mqttPort) && (
                           <Text type="danger" style={{ fontSize: 12 }}>
                              端口范围: 1-65535
                           </Text>
                        )}
                     </Col>
                     <Col span={12}>
                        <div style={{ marginBottom: 4, fontWeight: 500 }}>
                           Topic
                        </div>
                        <Input
                           value={mqttTopic}
                           onChange={(e) => setMqttTopic(e.target.value)}
                           placeholder="例如: wybb/z/mqtt179"
                           size="large"
                           disabled={!enableMqtt}
                           style={{ borderRadius: 8 }}
                        />
                     </Col>
                     <Col span={8}>
                        <div style={{ marginBottom: 4, fontWeight: 500 }}>
                           Client ID
                        </div>
                        <Input
                           value={mqttClientId}
                           onChange={(e) => setMqttClientId(e.target.value)}
                           placeholder="wybb_z1_123"
                           size="large"
                           disabled={!enableMqtt}
                           style={{ borderRadius: 8 }}
                        />
                     </Col>
                     <Col span={8}>
                        <div style={{ marginBottom: 4, fontWeight: 500 }}>
                           Username
                        </div>
                        <Input
                           value={mqttUsername}
                           onChange={(e) => setMqttUsername(e.target.value)}
                           placeholder="用户名"
                           size="large"
                           disabled={!enableMqtt}
                           style={{ borderRadius: 8 }}
                        />
                     </Col>
                     <Col span={8}>
                        <div style={{ marginBottom: 4, fontWeight: 500 }}>
                           Password
                        </div>
                        <Input.Password
                           value={mqttPassword}
                           onChange={(e) => setMqttPassword(e.target.value)}
                           placeholder="密码"
                           size="large"
                           disabled={!enableMqtt}
                           style={{ borderRadius: 8 }}
                        />
                     </Col>
                  </Row>
               </Card>
            </Col>
         </Row>
      </div>
      </Spin>
   );
};

export default AdvancedSettings;