package com.ard.work.service.impl;

import com.alibaba.fastjson2.JSONObject;
import com.ard.common.annotation.DataScope;
import com.ard.common.constant.CacheConstants;
import com.ard.common.core.redis.RedisCache;
import com.ard.common.exception.ServiceException;
import com.ard.common.utils.DateUtils;
import com.ard.common.utils.uuid.IdUtils;
import com.ard.system.authorize.service.AuthorizeService;
import com.ard.work.domain.dto.BoxSettingsDTO;
import com.ard.work.domain.entity.ArdDroneInfo;
import com.ard.work.domain.entity.ArdServerInfo;
import com.ard.work.domain.receiver.BoxInfoReceiver;
import com.ard.work.domain.receiver.BoxStreamUrlReceiver;
import com.ard.work.mapper.ArdDroneInfoMapper;
import com.ard.work.service.IArdDroneInfoService;
import com.ard.work.service.IArdServerInfoService;
import com.ard.work.service.ITyService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * 无人机盒子Service业务层处理
 *
 * @author ard
 * @date 2025-03-04
 */
@Slf4j
@Service
public class ArdDroneInfoServiceImpl implements IArdDroneInfoService {

    @Resource
    private ArdDroneInfoMapper ArdDroneInfoMapper;

    @Resource
    private ITyService tyService;

    @Resource
    private AuthorizeService authorizeService;

    @Resource
    private RedisCache redisCache;

    @Autowired
    private IArdServerInfoService ardServerInfoService;

    /**
     * 查询无人机盒子
     *
     * @param id 无人机盒子主键
     * @return 无人机盒子
     */
    @Override
    public ArdDroneInfo selectArdDroneById(String id) {
        return ArdDroneInfoMapper.selectArdDroneById(id);
    }

    /**
     * 查询无人机盒子
     *
     * @param boxSn 盒子编码
     * @return 无人机盒子
     */
    @Override
    public ArdDroneInfo selectArdDroneByboxSn(String boxSn) {
        return ArdDroneInfoMapper.selectArdDroneByBoxSn(boxSn);
    }

    /**
     * 查询无人机盒子列表
     *
     * @param ardDroneInfo 无人机盒子
     * @return 无人机盒子
     */
    @Override
    @DataScope(deptAlias = "d", userAlias = "u")
    public List<ArdDroneInfo> selectArdDroneList(ArdDroneInfo ardDroneInfo) {
        List<ArdDroneInfo> ardDroneInfos = ArdDroneInfoMapper.selectArdDroneList(ardDroneInfo);
        // 使用传统的 for 循环避免 forEach 带来的性能开销
        for (ArdDroneInfo uav : ardDroneInfos) {
            try {
                BoxStreamUrlReceiver boxLiveUrl = tyService.getBoxLiveUrl(uav.getBoxSn());
                if (boxLiveUrl != null) {
                    uav.setWebrtcUrl(boxLiveUrl.getRtc());
                }
            } catch (Exception e) {
                log.error("获取设备 {} 的直播地址失败", uav.getBoxSn(), e);
            }
        }
        return ardDroneInfos;
    }

    /**
     * 新增无人机盒子
     *
     * @param ardDroneInfo 无人机盒子
     * @return 结果
     */
    @Override
    public int insertArdDrone(ArdDroneInfo ardDroneInfo) {
        ardDroneInfo.setId(IdUtils.fastUUID());
        ardDroneInfo.setCreateTime(DateUtils.getNowDate());
        return ArdDroneInfoMapper.insertArdDrone(ardDroneInfo);
    }

    /**
     * 修改无人机盒子
     *
     * @param ArdDroneInfo 无人机盒子
     * @return 结果
     */
    @Override
    public int updateArdDrone(ArdDroneInfo ArdDroneInfo) {
        Boolean b =
                tyService.updateBoxSettings(BoxSettingsDTO.builder().boxSn(ArdDroneInfo.getBoxSn()).boxName(ArdDroneInfo.getBoxName()).build());
        if (!b) {
            throw new ServiceException("修改无人机盒子名称失败");
        }
        ArdDroneInfo.setUpdateTime(DateUtils.getNowDate());
        return ArdDroneInfoMapper.updateArdDrone(ArdDroneInfo);
    }

    /**
     * 批量删除无人机盒子
     *
     * @param ids 需要删除的无人机盒子主键
     * @return 结果
     */
    @Override
    public int deleteArdDroneByIds(String[] ids) {
        return ArdDroneInfoMapper.deleteArdDroneByIds(ids);
    }

    /**
     * 删除无人机盒子信息
     *
     * @param id 无人机盒子主键
     * @return 结果
     */
    @Override
    public int deleteArdDroneById(String id) {
        return ArdDroneInfoMapper.deleteArdDroneById(id);
    }

    /**
     * 批量新增无人机盒子
     *
     * @param boxSn  盒子编码数组
     * @param deptId 部门ID
     * @return 成功插入的记录数
     */
    @Override
    public int insertArdDroneLs(String[] boxSn, Long deptId) {
        // 参数校验
        if (boxSn == null || boxSn.length == 0) {
            log.warn("传入的盒子编码为空");
            return 1;
        }
        if (deptId == null) {
            throw new IllegalArgumentException("部门ID不能为空");
        }
        try {
            // 1. 检查已存在的无人机盒子
            List<ArdDroneInfo> existingDrones = getExistingDrones(boxSn);
            // 2. 授权数量验证
            validateAuthorization(existingDrones.size(), boxSn.length);
            // 3. 获取并组装新的无人机信息
            List<ArdDroneInfo> newDrones = assembleNewDrones(boxSn, deptId);
            // 4. 批量插入
            return batchInsertDrones(newDrones);
        } catch (Exception e) {
            log.error("批量新增无人机盒子失败, boxSn: {}, deptId: {}", Arrays.toString(boxSn), deptId, e);
            throw new ServiceException("批量新增无人机盒子失败: " + e.getMessage());
        }
    }

    /**
     * 修改无人机状态
     */
    @Override
    public int updateDroneStatus(String serverId, String status) {
        return ArdDroneInfoMapper.updateDroneStatus(serverId, status);
    }

    /**
     * 获取已存在的无人机信息
     */
    private List<ArdDroneInfo> getExistingDrones(String[] boxSn) {
        return Arrays.stream(boxSn)
                .map(ArdDroneInfoMapper::selectArdDroneByBoxSn)
                .filter(Objects::nonNull)
                .collect(Collectors.toList());
    }

    /**
     * 验证授权数量
     */
    private void validateAuthorization(int existingCount, int newCount) {
        int totalCount = existingCount + newCount;

        JSONObject authInfo = authorizeService.getAuthorizationInfo();
        String authType = authInfo.getString("Type");

        switch (authType) {
            case "normal":
                int allowedDroneNum = authInfo.getIntValue("droneNum");
                if (totalCount > allowedDroneNum) {
                    throw new RuntimeException(String.format(
                            "授权数量%d，当前操作将导致总数达到%d，超过授权限制",
                            allowedDroneNum, totalCount));
                }
                break;
            case "expired":
                throw new RuntimeException("授权文件已过期");
            case "mismatch":
                throw new RuntimeException("授权文件不匹配");
            default:
                throw new RuntimeException("未知的授权类型: " + authType);
        }
    }

    /**
     * 组装新的无人机信息
     */
    private List<ArdDroneInfo> assembleNewDrones(String[] boxSn, Long deptId) {
        List<BoxInfoReceiver> allBoxes = tyService.getBoxList();
        Set<String> targetBoxSnSet = new HashSet<>(Arrays.asList(boxSn));
        return allBoxes.stream()
                .filter(box -> targetBoxSnSet.contains(box.getBoxSn()))
                .map(box -> createDroneInfo(box, deptId))
                .collect(Collectors.toList());
    }

    /**
     * 创建无人机信息对象
     */
    private ArdDroneInfo createDroneInfo(BoxInfoReceiver box, Long deptId) {
        ArdDroneInfo drone = new ArdDroneInfo();
        drone.setId(IdUtils.simpleUUID());
        drone.setBoxSn(box.getBoxSn());
        drone.setBoxName(box.getBoxName());
        drone.setStartTime(new Date());
        drone.setOnLine(box.getOnLine());
        drone.setVideoServer(box.getVideoServer());
        drone.setVideoPort(box.getVideoPort());
        drone.setLastTaskId(box.getLastTaskId());
        drone.setDeptId(deptId);

        // 设置创建信息和更新信息
        setCreateAndUpdateInfo(drone);

        return drone;
    }

    /**
     * 设置创建和更新信息
     */
    private void setCreateAndUpdateInfo(ArdDroneInfo drone) {
        Date currentTime = new Date();
        drone.setCreateTime(currentTime);
        drone.setUpdateTime(currentTime);
    }

    /**
     * 批量插入无人机信息
     */
    private int batchInsertDrones(List<ArdDroneInfo> drones) {
        if (drones.isEmpty()) {
            return 0;
        }
        return ArdDroneInfoMapper.insertArdDroneLs(drones);
    }

    /**
     * 同步盒子属性
     */
    @Scheduled(fixedRate = 1000 * 5)
    public void syncBoxInfo() {
        ArdServerInfo ardServerInfo = new ArdServerInfo();
        ardServerInfo.setUseDataScope(false);
        List<ArdServerInfo> servers = ardServerInfoService.selectArdServerInfoList(ardServerInfo);
        for (ArdServerInfo server : servers) {
            ArdDroneInfo droneInfo = new ArdDroneInfo();
            droneInfo.setServerId(server.getId());
            droneInfo.setUseDataScope(false);
            List<ArdDroneInfo> localList = selectArdDroneList(droneInfo);
            Map<String, ArdDroneInfo> localMap = localList.stream()
                    .collect(Collectors.toMap(ArdDroneInfo::getBoxSn, drone -> drone));
            List<BoxInfoReceiver> boxList = tyService.getBoxList(server.getId());
            if (boxList == null) {
                updateArdDrone(ArdDroneInfo.builder().serverId(server.getId()).onLine(0).build());
                continue;
            }
            for (BoxInfoReceiver remote : boxList) {
                String boxSn = remote.getBoxSn();
                String redisKey = CacheConstants.UAV_ONLINE_KEY + boxSn;

                // 只处理在线的 Redis
                if (remote.getOnLine() == 1) {
                    redisCache.setCacheObject(redisKey, remote, 30, TimeUnit.SECONDS);
                } else {
                    redisCache.deleteObject(redisKey);
                }

                // 数据库同步
                ArdDroneInfo local = localMap.get(boxSn);
                if (local == null) continue;

                if (updateChangedAttributes(local, remote)) {
                    updateArdDrone(local); // 只有真的有变化才更新数据库
                }
            }
        }
    }
    /**
     * 更新 localBoxInfo 的字段，如果有变化返回 true，否则返回 false
     */
    private boolean updateChangedAttributes(ArdDroneInfo localBoxInfo, BoxInfoReceiver remoteArdDrone) {
        boolean changed = false;

        if (!Objects.equals(localBoxInfo.getBoxName(), remoteArdDrone.getBoxName())) {
            localBoxInfo.setBoxName(remoteArdDrone.getBoxName());
            changed = true;
        }
        if (!Objects.equals(localBoxInfo.getBoxVersion(), remoteArdDrone.getBoxVersion())) {
            localBoxInfo.setBoxVersion(remoteArdDrone.getBoxVersion());
            changed = true;
        }
        if (!Objects.equals(localBoxInfo.getLastTaskId(), remoteArdDrone.getLastTaskId())) {
            localBoxInfo.setLastTaskId(remoteArdDrone.getLastTaskId());
            changed = true;
        }
        if (!Objects.equals(localBoxInfo.getOnLine(), remoteArdDrone.getOnLine())) {
            localBoxInfo.setOnLine(remoteArdDrone.getOnLine());
            changed = true;
        }

        // TODO: 更新其他属性时，如果变化也设置 changed = true

        return changed;
    }
}