package cn.iocoder.yudao.module.pms.hik;

import cn.iocoder.yudao.module.pms.controller.admin.alarm.vo.IotVideoAlarmSaveReqVO;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

@Slf4j
@Service
@RequiredArgsConstructor
public class AlarmEventService {
    
    // 内存存储示例（实际应该使用数据库）
    private Map<String, AlarmEventDTO> alarmEventStore = new ConcurrentHashMap<>();
    
    /**
     * 保存告警事件
     */
    public void saveAlarmEvent(AlarmEventDTO dto) {
        dto.setProcessed(false);
        alarmEventStore.put(dto.getEventId(), dto);
        log.info("告警事件已保存: eventId={}, type={}", 
            dto.getEventId(), dto.getEventType());
    }
    
    /**
     * 异步处理告警事件
     */
    @Async
    public void processAlarmEvent(IotVideoAlarmSaveReqVO dto) {
        try {
            log.info("开始处理告警事件: channel={}, type={}",
                dto.getChannelName(), dto.getEventType());
            // 2. 根据事件类型进行不同处理
            switch (dto.getEventType()) {
                case "IntrusionDetection":
                    handleIntrusionDetection(dto);
                    break;
                case "CrowdDetection":
                    handleCrowdDetection(dto);
                    break;
                case "HelmetDetection":
                    handleHelmetDetection(dto);
                    break;
                case "RegionIntrusion":
                    handleRegionIntrusion(dto);
                    break;
                default:
                    handleDefaultAlarm(dto);
            }
            
            // 3. 发送通知（可集成企业微信、钉钉、短信等）
            //todo 触发消息提醒
//            sendNotification(dto);
        } catch (Exception e) {
            log.error("处理告警事件失败: ", e);
        }
    }
    
    private void handleIntrusionDetection(IotVideoAlarmSaveReqVO dto) {
        // 具体业务逻辑
    }
    
    private void handleCrowdDetection(IotVideoAlarmSaveReqVO dto) {
        log.warn("人员聚集告警: {} 检测到人员聚集", dto.getChannelName());
        // 具体业务逻辑
    }
    
    private void handleHelmetDetection(IotVideoAlarmSaveReqVO dto) {
        log.warn("安全帽检测告警: {} 检测到未戴安全帽", dto.getChannelName());
        // 具体业务逻辑
    }
    
    private void handleRegionIntrusion(IotVideoAlarmSaveReqVO dto) {
        log.warn("区域入侵告警: {} 检测到区域入侵", dto.getChannelName());
        // 具体业务逻辑
    }
    
    private void handleDefaultAlarm(IotVideoAlarmSaveReqVO dto) {
        log.warn("通用告警: {} - {}", dto.getEventType(), dto.getEventDescription());
    }
    
    private void sendNotification(AlarmEventDTO dto) {
        // TODO: 集成通知服务
        log.info("发送告警通知: eventId={}, type={}", 
            dto.getEventId(), dto.getEventType());
    }
    
    /**
     * 查询告警事件
     */
    public AlarmEventDTO getAlarmEvent(String eventId) {
        return alarmEventStore.get(eventId);
    }
    
    /**
     * 统计今日告警
     */
    public long countTodayAlarms() {
        LocalDateTime today = LocalDateTime.now().withHour(0).withMinute(0).withSecond(0);
        return alarmEventStore.values().stream()
            .filter(event -> event.getEventTime().isAfter(today))
            .count();
    }
}