package com.ard.work.service.impl;

import com.ard.common.utils.DateUtils;
import com.ard.common.utils.file.MimeTypeUtils;
import com.ard.oss.service.impl.OssServiceContext;
import com.ard.work.component.forest.TyClient;
import com.ard.work.domain.dto.BoxPhotosDTO;
import com.ard.work.domain.dto.BoxVideosDTO;
import com.ard.work.domain.entity.ArdFlightTask;
import com.ard.work.domain.entity.ArdMediaPic;
import com.ard.work.domain.entity.ArdMediaVideo;
import com.ard.work.domain.receiver.BoxPhotosReceiver;
import com.ard.work.domain.receiver.BoxVideosReceiver;
import com.ard.work.domain.receiver.TyHttpCommonReceiver;
import com.ard.work.mapper.ArdFlightTaskMapper;
import com.ard.work.mapper.ArdMediaPicMapper;
import com.ard.work.mapper.ArdMediaVideoMapper;
import com.ard.work.service.IArdMediaService;
import com.ard.work.util.osSelect;
import lombok.extern.slf4j.Slf4j;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.nio.file.Files;
import java.nio.file.Path;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * Description:
 * Author: lsy
 * Date: 2025年11月18日13:17
 **/
@Slf4j
@Service
public class ArdMediaServiceImpl implements IArdMediaService {

    @Resource
    private TyClient tyClient;
    @Resource
    private ArdMediaPicMapper ardMediaPicMapper;
    @Resource
    private ArdMediaVideoMapper ardMediaVideoMapper;
    @Resource
    private OssServiceContext ossServiceContext;
    @Resource
    private ArdFlightTaskMapper ardFlightTaskMapper;
    @Resource
    private ThreadPoolTaskExecutor threadPoolTaskExecutor;

    private final Set<Long> uploadingVideos = ConcurrentHashMap.newKeySet();
    private final Set<Long> uploadingPics = ConcurrentHashMap.newKeySet();

    // 调用接口获取架次图片
    private List<BoxPhotosReceiver> getBoxPhotos(String serverId, BoxPhotosDTO boxPhotosDTO) {
        TyHttpCommonReceiver<List<BoxPhotosReceiver>> boxPhotos = tyClient.getBoxPhotos(serverId, boxPhotosDTO);
        return boxPhotos.getContent();
    }

    // 调用接口获取架次视频
    private List<BoxVideosReceiver> getBoxVideos(String serverId, BoxVideosDTO boxVideosDTO) {
        TyHttpCommonReceiver<List<BoxVideosReceiver>> boxVideos = tyClient.getBoxVideos(serverId, boxVideosDTO);
        return boxVideos.getContent();
    }

    @Override
    public List<ArdMediaPic> selectArdMediaPicList(ArdMediaPic ardMediaPic) {
        return ardMediaPicMapper.selectPicList(ardMediaPic);
    }

    @Override
    public List<ArdMediaVideo> selectArdMediaVideoList(ArdMediaVideo ardMediaVideo) {
        return ardMediaVideoMapper.selectArdMediaVideoList(ardMediaVideo);
    }

    @Override
    public void insertPhotoToDatabase(ArdFlightTask flightTask, String serverId, String boxSn) {
        log.warn("开始获取图片信息");
        // 查询图片
        BoxPhotosDTO boxPhotosDTO = new BoxPhotosDTO();
        boxPhotosDTO.setTaskId(flightTask.getTaskId());
        boxPhotosDTO.setBoxSn(boxSn);
        boxPhotosDTO.setPageIndex(1);
        boxPhotosDTO.setPageSize(100);
        List<BoxPhotosReceiver> photoList = getBoxPhotos(serverId, boxPhotosDTO);
        if (photoList != null && !photoList.isEmpty()) {
            addPhotos(flightTask, photoList);
        }
    }

    @Override
    public void insertVideoToDatabase(ArdFlightTask flightTask, String serverId, String boxSn) {
        log.warn("开始获取视频信息");
        BoxVideosDTO boxVideosDTO = new BoxVideosDTO();
        boxVideosDTO.setTaskId(flightTask.getTaskId());
        boxVideosDTO.setBoxSn(boxSn);
        boxVideosDTO.setPageIndex(1);
        boxVideosDTO.setPageSize(100);
        List<BoxVideosReceiver> videoList = getBoxVideos(serverId, boxVideosDTO);
        if (videoList != null && !videoList.isEmpty()) {
            addVideos(flightTask, videoList);
        }
    }

    @Override
    public void syncPicToDatabase(ArdFlightTask flightTask, String serverId, String boxSn) {

        // 获取本地数据库中已存在的图片记录
        List<ArdMediaPic> existingPhotos = ardMediaPicMapper.selectPicByTaskId(flightTask.getTaskId());
        int count = existingPhotos.size(); //获取本地库图片数量
        // 查询图片
        BoxPhotosDTO boxPhotosDTO = BoxPhotosDTO.builder()
                .taskId(flightTask.getTaskId())
                .boxSn(boxSn)
                .pageIndex(1)
                .pageSize(500)
                .build();
        TyHttpCommonReceiver<List<BoxPhotosReceiver>> boxPhotos = tyClient.getBoxPhotos(serverId, boxPhotosDTO);
        List<BoxPhotosReceiver> photoList = boxPhotos.getContent();
        int size = photoList.size();

        if (size > count) {
            log.info("任务【{}】图片数量不一致，需要更新数据库", flightTask.getTaskId());
            // 需要插入新的视频
            // 提取现有的图片路径（根据 imgUrl 来判断是否重复）
            List<String> existingPhotoUrls = existingPhotos.stream()
                    .map(ArdMediaPic::getSourceUrl) // 提取 ArdMediaPic 中的图片 URL
                    .collect(Collectors.toList());

            // 筛选出 photoList 中没有出现在 existingPhotos 中的新图片
            List<BoxPhotosReceiver> newPhotos = photoList.stream()
                    .filter(photo -> !existingPhotoUrls.contains(photo.getImgUrl())) // 过滤出新图片
                    .collect(Collectors.toList());
            if (!newPhotos.isEmpty()) {
                // 插入新的图片记录
                addPhotos(flightTask, newPhotos);
            }
        }
    }

    @Override
    public void syncVideoToDatabase(ArdFlightTask flightTask, String serverId, String boxSn) {

        // 获取本地数据库中已存在的视频记录
        List<ArdMediaVideo> existingVideos = ardMediaVideoMapper.selectArdMediaVideoByTaskId(flightTask.getTaskId());
        int count = existingVideos.size(); //获取本地库视频数量
        // 查询图片
        BoxVideosDTO boxVideosDTO = BoxVideosDTO.builder()
                .taskId(flightTask.getTaskId())
                .boxSn(boxSn)
                .pageIndex(1)
                .pageSize(500)
                .build();
        TyHttpCommonReceiver<List<BoxVideosReceiver>> boxVideos = tyClient.getBoxVideos(serverId, boxVideosDTO);
        List<BoxVideosReceiver> videoList = boxVideos.getContent();
        int size = videoList.size();

        if (size > count) {
            log.info("任务【{}】视频数量不一致，需要更新数据库", flightTask.getTaskId());
            // 需要插入新的视频
            // 提取现有的图片路径（根据 imgUrl 来判断是否重复）
            List<String> existingVideoUrls = existingVideos.stream()
                    .map(ArdMediaVideo::getSourceUrl) // 提取 ArdMedia 中的视频 URL
                    .collect(Collectors.toList());

            // 筛选出 photoList 中没有出现在 existingPhotos 中的新图片
            List<BoxVideosReceiver> newVideos = videoList.stream()
                    .filter(photo -> !existingVideoUrls.contains(photo.getImgUrl())) // 过滤出新视频
                    .collect(Collectors.toList());
            if (!newVideos.isEmpty()) {
                // 插入新的视频记录
                addVideos(flightTask, newVideos);
                // 更新任务的视频数量
                flightTask.setVideoCount(flightTask.getVideoCount() + newVideos.size());
                ardFlightTaskMapper.updateArdFlightTask(flightTask);
            }
        }
    }

    private void addPhotos(ArdFlightTask flightTask, List<BoxPhotosReceiver> photoList) {
        log.warn("开始添加图片");
        for (BoxPhotosReceiver photo : photoList) {
            ArdMediaPic ardMedia = ArdMediaPic.builder()
                    .id(photo.getPhotoId())
                    .taskId(flightTask.getTaskId())
                    .fileSize(photo.getFileSize())
                    .fileMd5(photo.getFileMd5())
                    .sourceUrl(photo.getImgUrl())
                    .longitude(photo.getLng())
                    .latitude(photo.getLat())
                    .height(photo.getHeight())
                    .captureTime(DateUtils.parseDate(photo.getTimeStamp()))
                    .build();
            ardMedia.setCreateTime(new Date());
            ardMediaPicMapper.insertPic(ardMedia);
        }
    }

    private void addVideos(ArdFlightTask flightTask, List<BoxVideosReceiver> videoList) {
        for (BoxVideosReceiver video : videoList) {
            ArdMediaVideo ardMedia = ArdMediaVideo.builder()
                    .id(video.getId())
                    .name(video.getName())
                    .taskId(flightTask.getTaskId())
//                    .fileSize(getFileSizeByUrl(video.getImgUrl()))
                    .sourceUrl(video.getImgUrl())
                    .startTime(DateUtils.parseDate(video.getStartTime()))
                    .endTime(DateUtils.parseDate(video.getEndTime()))
                    .spanSeconds(Integer.parseInt(video.getSpanSeconds()))
                    .build();
            ardMedia.setCreateTime(new Date());
            ardMediaVideoMapper.insertArdMediaVideo(ardMedia);
        }
    }

    /**
     * 处理视频缩略图
     */
    private void processVideoThumbnail(ArdMediaVideo video) {
        // 生成缩略图
        try (ByteArrayInputStream in = generateThumbnail(video.getSourceUrl())) {
            String thumbUrl = ossServiceContext.upload(
                    "record",
                    video.getTaskId() + "/" + video.getId() + ".jpg",
                    in,
                    MimeTypeUtils.IMAGE_JPEG
            );
            video.setThumbnailUrl(thumbUrl);
        } catch (Exception e) {
            log.warn("视频缩略图生成或上传失败 taskId={}, videoId={}", video.getTaskId(), video.getId(), e);
        }
        // 获取文件大小
        try {
            long videoSize = getFileSizeFromUrl(video.getSourceUrl());
            video.setFileSize(videoSize);
        } catch (Exception e) {
            log.warn("获取视频大小失败 url={}", video.getSourceUrl(), e);
        }
        // 更新数据库
        video.setUpdateTime(new Date());
        ardMediaVideoMapper.updateArdMediaVideo(video);
    }

    public long getFileSizeFromUrl(String fileUrl) throws IOException {
        URL url = new URL(fileUrl);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("HEAD");
        conn.setConnectTimeout(5000);
        conn.setReadTimeout(5000);
        conn.connect();
        long size = conn.getContentLengthLong(); // 返回字节数
        conn.disconnect();
        return size;
    }


    private ByteArrayInputStream generateThumbnail(String videoFile) {

        String ffmpeg = osSelect.isWindows()
                ? "ffmpeg"
                : "/usr/local/ffmpeg/bin/ffmpeg";

        Path tempImg = null;
        try {
            tempImg = Files.createTempFile("thumb_", ".jpg");

            List<String> cmd = new ArrayList<>();
            cmd.add(ffmpeg);
            cmd.add("-y");
            cmd.add("-loglevel");
            cmd.add("error");
            cmd.add("-i");
            cmd.add(videoFile);
            cmd.add("-ss");
            cmd.add(String.valueOf(1));
            cmd.add("-vframes");
            cmd.add("1");
            cmd.add("-vf");
            cmd.add("scale=" + 200 + ":-1");
            cmd.add(tempImg.toAbsolutePath().toString());

            log.info("ffmpeg cmd: {}", String.join(" ", cmd));

            Process process = new ProcessBuilder(cmd).start();

            drain(process.getErrorStream());

            boolean finished = process.waitFor(15, TimeUnit.SECONDS); // 超时保护
            if (!finished) {
                process.destroyForcibly();
                throw new RuntimeException("ffmpeg timeout");
            }

            if (process.exitValue() != 0) {
                throw new RuntimeException("ffmpeg exit=" + process.exitValue());
            }

            byte[] data = Files.readAllBytes(tempImg);
            return new ByteArrayInputStream(data);

        } catch (Exception e) {
            throw new RuntimeException("生成缩略图失败", e);
        } finally {
            if (tempImg != null) {
                try {
                    Files.deleteIfExists(tempImg);
                } catch (IOException ignore) {
                }
            }
        }
    }

    private static void drain(InputStream is) {
        new Thread(() -> {
            try (BufferedReader br = new BufferedReader(new InputStreamReader(is))) {
                while (br.readLine() != null) {
                }
            } catch (IOException ignore) {
            }
        }, "ffmpeg-stderr").start();
    }


    /**
     * 将 URL 转成 InputStream
     *
     * @param fileUrl              文件 URL
     * @param connectTimeoutMillis 连接超时（毫秒）
     * @param readTimeoutMillis    读取超时（毫秒）
     * @return InputStream，如果失败返回 null
     */
    public InputStream openUrlInputStream(String fileUrl, int connectTimeoutMillis, int readTimeoutMillis) {
        try {
            URL url = new URL(fileUrl);

            // 支持 HTTPS 信任所有证书（如果需要访问自签名证书）
            if ("https".equalsIgnoreCase(url.getProtocol())) {
                TrustManager[] trustAllCerts = new TrustManager[]{
                        new X509TrustManager() {
                            @Override
                            public void checkClientTrusted(X509Certificate[] chain, String authType) {
                            }

                            @Override
                            public void checkServerTrusted(X509Certificate[] chain, String authType) {
                            }

                            @Override
                            public X509Certificate[] getAcceptedIssuers() {
                                return null;
                            }
                        }
                };
                SSLContext sc = SSLContext.getInstance("SSL");
                sc.init(null, trustAllCerts, new java.security.SecureRandom());
                HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
                HttpsURLConnection.setDefaultHostnameVerifier((hostname, session) -> true);
            }

            URLConnection connection = url.openConnection();
            connection.setConnectTimeout(connectTimeoutMillis);
            connection.setReadTimeout(readTimeoutMillis);

            return connection.getInputStream();

        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    @Scheduled(fixedDelay = 10000) // 每10秒执行一次
    public void syncVideoMediaUrl() {
        List<ArdMediaVideo> videos = ardMediaVideoMapper.selectVideosWithNullMedia();
        for (ArdMediaVideo video : videos) {
            if (!uploadingVideos.add(video.getId())) {
                continue;
            }
            CompletableFuture.runAsync(() -> {
                try {
                    // 上传视频到 OSS
                    try (InputStream is = openUrlInputStream(video.getSourceUrl(), 5000, 10000)) {
                        if (is != null) {
                            String mediaUrl = ossServiceContext.upload(
                                    "record",
                                    video.getTaskId() + "/" + video.getId() + ".mp4",
                                    is,
                                    MimeTypeUtils.VIDEO_MP4
                            );
                            log.info("upload mediaUrl={}", mediaUrl);
                            video.setMediaUrl(mediaUrl);
                        }
                    }
                    // 生成缩略图
                    processVideoThumbnail(video);

                    // 更新数据库
                    video.setUpdateTime(new Date());
                    ardMediaVideoMapper.updateArdMediaVideo(video);
                } catch (Exception e) {
                    log.error("生成 mediaUrl/缩略图失败 videoId={}", video.getId(), e);
                } finally {
                    uploadingVideos.remove(video.getId());
                }
            }, threadPoolTaskExecutor);
        }
    }

    @Scheduled(fixedDelay = 10000) // 每10秒执行一次
    public void syncPicMediaUrl() {
        List<ArdMediaPic> pics = ardMediaPicMapper.selectPicsWithNullMedia();
        for (ArdMediaPic pic : pics) {
            if (!uploadingPics.add(pic.getId())) {
                continue;
            }
            CompletableFuture.runAsync(() -> {
                try (InputStream inputStream = openUrlInputStream(pic.getSourceUrl(), 5000, 10000)) {
                    if (inputStream != null) {
                        String url = ossServiceContext.upload(
                                "pic",
                                pic.getTaskId() + "/" + pic.getId() + ".jpg",
                                inputStream,
                                MimeTypeUtils.IMAGE_JPG
                        );
                        pic.setMediaUrl(url);
                        pic.setUpdateTime(new Date());
                        ardMediaPicMapper.updatePic(pic);
                    }
                } catch (Exception e) {
                    log.error("图片上传失败 taskId={}, photoId={}", pic.getTaskId(), pic.getId(), e);
                } finally {
                    uploadingPics.remove(pic.getId());
                }

            }, threadPoolTaskExecutor); // 使用自定义线程池
        }
    }

}