package com.ard.sample.media.service.impl;

import com.ard.sample.common.error.CommonErrorEnum;
import com.ard.sample.common.model.ResponseResult;
import com.ard.sample.component.mqtt.model.*;
import com.ard.sample.component.mqtt.service.IMessageSenderService;
import com.ard.common.core.redis.RedisConst;
import com.ard.common.core.redis.RedisOpsUtils;
import com.ard.sample.component.websocket.model.BizCodeEnum;
import com.ard.sample.component.websocket.model.CustomWebSocketMessage;
import com.ard.sample.component.websocket.service.ISendMessageService;
import com.ard.sample.component.websocket.service.IWebSocketManageService;
import com.ard.sample.manage.model.dto.DeviceDTO;
import com.ard.sample.manage.model.enums.UserTypeEnum;
import com.ard.sample.manage.service.IDeviceService;
import com.ard.sample.media.model.FileUploadCallback;
import com.ard.sample.media.model.FileUploadDTO;
import com.ard.sample.media.model.MediaFileCountDTO;
import com.ard.sample.media.model.MediaFileDTO;
import com.ard.sample.media.service.IFileService;
import com.ard.sample.media.service.IMediaService;
import com.ard.sample.wayline.mapper.IWaylineJobHistoryMapper;
import com.ard.sample.wayline.model.dto.WaylineJobDTO;
import com.ard.sample.wayline.service.IWaylineJobHistoryService;
import com.ard.sample.wayline.service.IWaylineJobService;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.integration.annotation.ServiceActivator;
import org.springframework.integration.mqtt.support.MqttHeaders;
import org.springframework.messaging.MessageHeaders;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;

/**
 * @author sean
 * @version 0.2
 * @date 2021/12/9
 */
@Slf4j
@Service
public class MediaServiceImpl implements IMediaService {

    @Autowired
    private IFileService fileService;

    @Autowired
    private IWaylineJobService waylineJobService;

    @Autowired
    private ObjectMapper objectMapper;

    @Autowired
    private IMessageSenderService messageSenderService;

    @Autowired
    private IDeviceService deviceService;

    @Autowired
    private ISendMessageService sendMessageService;

    @Autowired
    private IWebSocketManageService webSocketManageService;

    @Override
    public Boolean fastUpload(String fingerprint) {
        return fileService.checkExist(fingerprint);
    }

    @Override
    public Integer saveMediaFile(FileUploadDTO file) {
        return fileService.saveFile(file);
    }

    @Override
    public List<String> getAllTinyFingerprints() {
        return fileService.getAllFiles()
                .stream()
                .map(MediaFileDTO::getTinnyFingerprint)
                .collect(Collectors.toList());
    }

    @Override
    public List<String> getExistTinyFingerprints(List<String> tinyFingerprints) {
        List<String> tinyFingerprintList = this.getAllTinyFingerprints();
        return tinyFingerprints
                .stream()
                .filter(tinyFingerprintList::contains)
                .collect(Collectors.toList());

    }

    /**
     * 处理文件上传回调事件
     *
     * 该方法接收文件上传回调消息，进行业务处理并返回响应。主要逻辑包括：
     * 1. 解析回调数据并构建响应对象
     * 2. 检查回调结果，非成功状态直接返回
     * 3. 验证Redis中存储的媒体文件计数信息，防止重复处理
     * 4. 查询设备信息和作业信息，解析媒体文件
     * 5. 发布处理结果到指定主题
     * 6. 通知上传计数更新
     *
     * @param receiver 包含文件上传回调数据的通用主题接收器对象
     *                  包含以下关键字段：
     *                  - data: 回调数据(JSON格式)
     *                  - gateway: 设备网关标识
     *                  - tid: 事务ID
     *                  - bid: 业务ID
     */
    @Override
    @ServiceActivator(inputChannel = ChannelName.INBOUND_EVENTS_FILE_UPLOAD_CALLBACK, outputChannel = ChannelName.OUTBOUND)
    public void handleFileUploadCallBack(CommonTopicReceiver receiver) {
        FileUploadCallback callback = objectMapper.convertValue(receiver.getData(), FileUploadCallback.class);
        log.info("媒体库回调-原始报文内容：{}",receiver);
        log.info("媒体库调试-收到文件上传回调：{}",callback);
        String topic = TopicConst.THING_MODEL_PRE + TopicConst.PRODUCT + receiver.getGateway()
                + TopicConst.EVENTS_SUF + TopicConst._REPLY_SUF;
        CommonTopicResponse<RequestsReply> data = CommonTopicResponse.<RequestsReply>builder()
                .timestamp(System.currentTimeMillis())
                .method(EventsMethodEnum.FILE_UPLOAD_CALLBACK.getMethod())
                .data(RequestsReply.success())
                .tid(receiver.getTid())
                .bid(receiver.getBid())
                .build();

        if (callback.getResult() != ResponseResult.CODE_SUCCESS) {
            messageSenderService.publish(topic, data);
            log.info("媒体库调试-回调失败：{}",callback);
            return;
        }

        String jobId = callback.getFile().getExt().getFlightId();

        MediaFileCountDTO mediaFileCount = (MediaFileCountDTO) RedisOpsUtils.hashGet(RedisConst.MEDIA_FILE_PREFIX + receiver.getGateway(), jobId);
        // duplicate data
        if (receiver.getBid().equals(mediaFileCount.getBid()) && receiver.getTid().equals(mediaFileCount.getTid())) {
            messageSenderService.publish(topic, data);
            return;
        }

        DeviceDTO device = (DeviceDTO) RedisOpsUtils.get(RedisConst.DEVICE_ONLINE_PREFIX + receiver.getGateway());
        Optional<WaylineJobDTO> jobOpt = waylineJobService.getJobByJobId(jobId);
        if (jobOpt.isPresent()) {
            boolean isSave = parseMediaFile(callback, jobOpt.get());
            log.info("媒体库收到数据：{}",callback);
            if (!isSave) {
                data.setData(RequestsReply.error(CommonErrorEnum.ILLEGAL_ARGUMENT));
                log.info("媒体库保存失败：{}",callback);
            }

        }

        messageSenderService.publish(topic, data);

        notifyUploadedCount(mediaFileCount, receiver, jobId);
    }

    /**
     * 更新上传的计数并通知网页端
     * @param mediaFileCount
     * @param receiver
     * @param jobId
     */
    private void notifyUploadedCount(MediaFileCountDTO mediaFileCount, CommonTopicReceiver receiver, String jobId) {
        mediaFileCount.setBid(receiver.getBid());
        mediaFileCount.setTid(receiver.getTid());
        mediaFileCount.setUploadedCount(mediaFileCount.getUploadedCount() + 1);

        String key = RedisConst.MEDIA_FILE_PREFIX + receiver.getGateway();
        // After all the files of the job are uploaded, delete the media file key.
        if (mediaFileCount.getUploadedCount() >= mediaFileCount.getMediaCount()) {
            RedisOpsUtils.hashDel(key, new String[]{jobId});

            // After uploading, delete the key with the highest priority.
            String highestKey = RedisConst.MEDIA_HIGHEST_PRIORITY_PREFIX + receiver.getGateway();
            if (RedisOpsUtils.checkExist(highestKey) &&
                    jobId.equals(((MediaFileCountDTO) RedisOpsUtils.get(highestKey)).getJobId())) {
                RedisOpsUtils.del(highestKey);
            }

            if (RedisOpsUtils.hashLen(key) == 0) {
                RedisOpsUtils.del(key);
            }
        } else {
            RedisOpsUtils.hashSet(key, jobId, mediaFileCount);
        }

        DeviceDTO dock = (DeviceDTO) RedisOpsUtils.get(RedisConst.DEVICE_ONLINE_PREFIX + receiver.getGateway());
        sendMessageService.sendBatch(webSocketManageService.getValueAndUserType(UserTypeEnum.WEB.getVal()),
                CustomWebSocketMessage.builder()
                        .bizCode(BizCodeEnum.FILE_UPLOAD_CALLBACK.getCode())
                        .timestamp(System.currentTimeMillis())
                        .data(mediaFileCount)
                        .build());
    }

    /**
     * 解析媒体文件并设置相关属性
     *
     * <p>该函数主要完成两个操作：
     * 1. 根据任务中的机库序列号设置拍摄媒体的无人机序列号
     * 2. 从文件对象键中提取路径并设置到文件对象中
     * 最后尝试保存文件并返回是否保存成功
     *
     * @param callback 文件上传回调对象，包含待处理的文件信息
     * @param job 航线任务数据传输对象，包含机库序列号等信息
     * @return 返回true表示文件保存成功，false表示保存失败
     */
    private Boolean parseMediaFile(FileUploadCallback callback, WaylineJobDTO job) {
        // 设置拍摄媒体的无人机
        Optional<DeviceDTO> dockDTO = deviceService.getDeviceBySn(job.getDockSn());
        dockDTO.ifPresent(dock -> callback.getFile().getExt().setSn(dock.getChildDeviceSn()));

        // 设定路径
        String objectKey = callback.getFile().getObjectKey()!= null ? callback.getFile().getObjectKey() : "";
        callback.getFile().setPath(objectKey.substring(objectKey.indexOf("/") + 1, objectKey.lastIndexOf("/")));
        log.info("保存媒体库数据：{}",callback);
        return fileService.saveFile(callback.getFile()) > 0;
    }

    /**
     * 处理最高优先级上传飞行任务媒体事件
     *
     * 该方法处理来自MQTT通道的最高优先级上传飞行任务媒体请求，主要功能包括：
     * 1. 验证请求数据有效性
     * 2. 发送成功响应
     * 3. 更新Redis中媒体文件计数信息
     * 4. 通过WebSocket通知前端
     *
     * @param receiver 包含请求数据的接收器对象，包含方法、bid、tid等信息
     * @param headers 消息头信息，包含接收的MQTT主题等元数据
     */
    @Override
    @ServiceActivator(inputChannel = ChannelName.INBOUND_EVENTS_HIGHEST_PRIORITY_UPLOAD_FLIGHT_TASK_MEDIA, outputChannel = ChannelName.OUTBOUND)
    public void handleHighestPriorityUploadFlightTaskMedia(CommonTopicReceiver receiver, MessageHeaders headers) {
        Map map = objectMapper.convertValue(receiver.getData(), Map.class);
        if (map.isEmpty() || !map.containsKey(MapKeyConst.FLIGHT_ID)) {
            return;
        }

        messageSenderService.publish(headers.get(MqttHeaders.RECEIVED_TOPIC) + TopicConst._REPLY_SUF,
                CommonTopicResponse.builder()
                        .data(RequestsReply.success())
                        .method(receiver.getMethod())
                        .timestamp(System.currentTimeMillis())
                        .bid(receiver.getBid())
                        .tid(receiver.getTid())
                        .build());

        String dockSn = receiver.getGateway();
        String jobId = map.get(MapKeyConst.FLIGHT_ID).toString();
        String key = RedisConst.MEDIA_HIGHEST_PRIORITY_PREFIX + dockSn;
        MediaFileCountDTO countDTO = new MediaFileCountDTO();
        if (RedisOpsUtils.checkExist(key)) {
            countDTO = (MediaFileCountDTO) RedisOpsUtils.get(key);
            if (jobId.equals(countDTO.getJobId())) {
                RedisOpsUtils.setWithExpire(key, countDTO, RedisConst.DEVICE_ALIVE_SECOND * 5);
                return;
            }

            countDTO.setPreJobId(countDTO.getJobId());
        }
        countDTO.setJobId(jobId);

        RedisOpsUtils.setWithExpire(key, countDTO, RedisConst.DEVICE_ALIVE_SECOND * 5);

        DeviceDTO dock = (DeviceDTO) RedisOpsUtils.get(RedisConst.DEVICE_ONLINE_PREFIX + dockSn);
        sendMessageService.sendBatch(webSocketManageService.getValueAndUserType(UserTypeEnum.WEB.getVal()),
                CustomWebSocketMessage.builder()
                        .timestamp(System.currentTimeMillis())
                        .bizCode(BizCodeEnum.HIGHEST_PRIORITY_UPLOAD_FLIGHT_TASK_MEDIA.getCode())
                        .data(countDTO)
                        .build());

    }
}