package com.zy.component.influxdb.service;

import com.influxdb.v3.client.InfluxDBClient;
import com.influxdb.v3.client.Point;
import com.influxdb.v3.client.PointValues;
import com.influxdb.v3.client.query.QueryOptions;
import com.influxdb.v3.client.query.QueryType;
import com.influxdb.v3.client.write.WritePrecision;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.time.Instant;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import java.util.stream.Stream;


@Service
public class InfluxDBService {

    private static final Logger logger = LoggerFactory.getLogger(InfluxDBService.class);

    @Autowired
    private InfluxDBClient influxDBClient;



    /**
     * 写入数据
     *
     * @param measurement 表名
     * @param tags        标签
     * @param fields      字段
     */
    public void writeData(String measurement, Map<String, String> tags, Map<String, Object> fields) {
        Point point = Point.measurement(measurement)
                .setTags(tags)
                .setFields(fields)
                .setTimestamp(Instant.now().toEpochMilli(), WritePrecision.MS);
        try {
            influxDBClient.writePoint(point);
        } catch (Exception e) {
            logger.error("Failed to write data to the database.");
            e.printStackTrace();
        }
    }

    /**
     * 查询数据
     *
     * @param sql sql语句
     * @return 查询结果列表
     */
    public List<Map<String, Object>> queryData(String sql) {
        try {
            // 执行查询
            Stream<Map<String, Object>> mapStream = influxDBClient.queryRows(sql);
            List<Map<String, Object>> result = mapStream.collect(Collectors.toList());
            logger.info("查询数据：{}", result);
            return result;
        } catch (Exception e) {
            logger.error("Failed to query data from the database.");
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 查询数据
     *
     * @param sql sql语句
     * @return 查询结果列表
     */
    public <T> List<T> queryPoints(String sql, Class<T> clazz) {
        try {
            // 执行查询
            Stream<PointValues> queryPoints = influxDBClient.queryPoints(sql);
            Field[] declaredFields = clazz.getDeclaredFields();
                
            // 创建一个列表用于存储结果
            List<T> result = queryPoints.map(point -> {
                T newInstance = null;
                try {
                    // 使用无参构造函数创建新实例
                    newInstance = clazz.getDeclaredConstructor().newInstance();
                } catch (NoSuchMethodException | InstantiationException e) {
                    // 如果没有无参构造函数或无法实例化，则抛出有意义的异常
                    throw new RuntimeException("无法创建对象实例，请确保类有公共无参构造函数: " + clazz.getName(), e);
                } catch (InvocationTargetException e) {
                    throw new RuntimeException(e);
                } catch (IllegalAccessException e) {
                    throw new RuntimeException(e);
                }

                String[] tagNames = point.getTagNames();
                for (String tagName : tagNames) {
                    for (Field declaredField : declaredFields) {
                        if (declaredField.getName().equals(tagName)) {
                            declaredField.setAccessible(true);
                            try {
                                declaredField.set(newInstance, point.getTag(tagName));
                            } catch (IllegalAccessException e) {
                                throw new RuntimeException(e);
                            }
                            break;
                        }
                    }
                }
                String[] fieldNames = point.getFieldNames();
                for (String fieldName : fieldNames) {
                    for (Field declaredField : declaredFields) {
                        if (declaredField.getName().equals(fieldName)) {
                            declaredField.setAccessible(true);
                            try {
                                declaredField.set(newInstance, point.getField(fieldName));
                            } catch (IllegalAccessException e) {
                                throw new RuntimeException(e);
                            }
                            break;
                        }
                    }
                }
                return newInstance;
            }).collect(Collectors.toList());
                
            logger.info("查询数据：{}", result);
            return result;
        } catch (Exception e) {
            logger.error("Failed to query data from the database.");
            e.printStackTrace();
        }
        return null;
    }



}