package com.fdkankan.fyun.oss;

import com.aliyun.oss.OSS;
import com.aliyun.oss.model.*;
import com.fdkankan.fyun.face.AbstractFYunFileService;
import com.fdkankan.fyun.oss.constant.OssConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
import org.springframework.util.ObjectUtils;

import java.io.*;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Component
@ConditionalOnProperty(name = "fyun.type",havingValue = "oss")
public class OssFileService extends AbstractFYunFileService {

    private Logger log = LoggerFactory.getLogger(this.getClass().getName());

    @Autowired
    private OSS ossClient;

    @Override
    public String uploadFile(String bucket, byte[] data, String remoteFilePath) {
        try {
            ossClient.putObject(bucket, remoteFilePath, new ByteArrayInputStream(data));
        } catch (Exception e) {
            log.error("oss上传文件失败", e);
            e.printStackTrace();
        }
        return null;
    }

    @Override
    public String uploadFile(String bucket, String filePath, String remoteFilePath) {
        return uploadFile(bucket, filePath, remoteFilePath, true, null);
    }

    @Override
    public String uploadFile(String bucket, String filePath, String remoteFilePath, Map<String, String> headers) {
        return uploadFile(bucket, filePath, remoteFilePath, true, headers);
    }

    private String uploadFile(String bucket, String filePath, String remoteFilePath, Boolean shutdown,Map<String, String> headers) {
        try {
            File file = new File(filePath);
            if (!file.exists()) {
                log.error("要上传的文件不存在：" + filePath);
                return null;
            }
            ObjectMetadata metadata = new ObjectMetadata();
            if (filePath.contains(".jpg")) {
                metadata.setContentType("image/jpeg");
            }
            if (filePath.contains(".mp4")) {
                metadata.setContentType("video/mp4");
            }
            if (filePath.contains(".mp3")) {
                metadata.setContentType("audio/mp3");
            }
            if(org.apache.commons.lang3.ObjectUtils.isNotEmpty(headers)){
                for (Map.Entry<String, String> header : headers.entrySet()) {
                    metadata.setHeader(header.getKey(),header.getValue());
                }
            }
            ossClient.putObject(bucket, remoteFilePath, new File(filePath), metadata);
        } catch (Exception e) {
            log.error("oss上传文件失败", e);
            e.printStackTrace();
        }
        return null;
    }

    @Override
    public String uploadFileByCommand(String bucket, String filePath, String remoteFilePath) {
        String ossPath = bucket + "/" + remoteFilePath;
        try {
            String command = String.format(OssConstants.UPLOAD_SH, ossPath, filePath);
            log.info("开始上传文件, ossPath:{}, srcPath:{}", ossPath, filePath);
            callshell(command);
        } catch (Exception e) {
            log.error("上传文件失败, ossPath:{}, srcPath:{}", ossPath, filePath);
            e.printStackTrace();
        }
        return null;
    }

    @Override
    public void deleteFile(String bucket, String remoteFilePath) throws IOException {
        try {
            ossClient.deleteObject(bucket, remoteFilePath);
        } catch (Exception e) {
            log.error("OSS删除文件失败,key=" + remoteFilePath);
            e.printStackTrace();
        }
    }

    @Override
    public void deleteFolder(String bucket, String remoteFolderPath) {
        try {
            List<String> remoteFiles = listRemoteFiles(bucket, remoteFolderPath, false);
            if (CollectionUtils.isEmpty(remoteFiles)) {
                return;
            }
            DeleteObjectsRequest request = new DeleteObjectsRequest(bucket);
            request.setKeys(remoteFiles);
            ossClient.deleteObjects(request);
        } catch (Exception e) {
            log.error("OSS删除文件失败,key=" + remoteFolderPath);
            e.printStackTrace();
        }
    }

    @Override
    public void uploadMulFiles(String bucket, Map<String, String> filepaths) {
        try {
            for (Map.Entry<String, String> entry : filepaths.entrySet()) {
                uploadFile(bucket, entry.getKey(), entry.getValue(), false,null);
            }
        } catch (Exception e) {
            log.error("OSS批量上传文件失败！");
        }
    }


    @Override
    public List<String> listRemoteFiles(String bucket, String sourcePath) {
        return listRemoteFiles(bucket, sourcePath, true);
    }

    private List<String> listRemoteFiles(String bucket, String sourcePath, Boolean shutdown) {
        List<String> keyList = new ArrayList<>();
        try {
            boolean flag = true;
            String nextMaker = null;
            ListObjectsRequest listObjectsRequest = new ListObjectsRequest(bucket);
            //指定下一级文件
            listObjectsRequest.setPrefix(sourcePath);
            //设置分页的页容量
            listObjectsRequest.setMaxKeys(200);
            do {
                //获取下一页的起始点，它的下一项
                listObjectsRequest.setMarker(nextMaker);
                ObjectListing objectListing = ossClient.listObjects(listObjectsRequest);
                List<String> collect = objectListing.getObjectSummaries().parallelStream()
                        .map(OSSObjectSummary::getKey).collect(Collectors.toList());
                if (!CollectionUtils.isEmpty(collect)) {
                    keyList.addAll(collect);
                }
                nextMaker = objectListing.getNextMarker();
                //全部执行完后，为false
                flag = objectListing.isTruncated();
            } while (flag);
        } catch (Exception e) {
            log.error("获取文件列表失败，path=" + sourcePath, e);
            e.printStackTrace();
        }
        return keyList;
    }

    @Override
    public void copyFileBetweenBucket(String sourceBucketName, String sourcePath, String targetBucketName, String targetPath) {
        copyFileBetweenBucket(sourceBucketName, sourcePath, targetBucketName, targetPath, true);
    }

    private void copyFileBetweenBucket(String sourceBucketName, String sourcePath, String targetBucketName, String targetPath, Boolean shutdown) {
        try {
            List<String> files = listRemoteFiles(sourceBucketName, sourcePath, false);
            if (ObjectUtils.isEmpty(files)) {
                log.error("源文件夹为空：{}", sourcePath);
            }
            files.stream().forEach(file -> {
                ossClient.copyObject(sourceBucketName, file, targetBucketName, file.replace(sourcePath, targetPath));
            });
        } catch (Exception e) {
            log.error("列举文件目录失败,key=" + sourcePath);
        }
    }

    @Override
    public void copyFilesBetweenBucket(String sourceBucketName, String targetBucketName, Map<String, String> pathMap) {
        if (ObjectUtils.isEmpty(pathMap)) {
            return;
        }
        try {
            for (Map.Entry<String, String> entry : pathMap.entrySet()) {
                copyFileBetweenBucket(sourceBucketName, entry.getKey(), targetBucketName, entry.getValue(), false);
            }
        } catch (Exception e) {
            log.error("批量复制文件失败!");
        }
    }

    @Override
    public String getFileContent(String bucketName, String remoteFilePath) {
        try {
            OSSObject ossObject = ossClient.getObject(bucketName, remoteFilePath);
            InputStream objectContent = ossObject.getObjectContent();
            StringBuilder contentJson = new StringBuilder();
            try (BufferedReader reader = new BufferedReader(new InputStreamReader(objectContent))) {
                while (true) {
                    String line = reader.readLine();
                    if (line == null) break;
                    contentJson.append(line);
                }
            } catch (IOException e) {
                log.error("读取scene.json文件流失败", e);
            }
            ossObject.close();
            return contentJson.toString();
        } catch (Exception e) {
            log.error("获取文件内容失败：{}", remoteFilePath);
            return null;
        }
    }

    @Override
    public boolean fileExist(String bucket, String objectName) {
        try {
            return ossClient.doesObjectExist(bucket, objectName);
        } catch (Exception e) {
            log.error("判断文件是否存在失败：{}", objectName);
            return false;
        }
    }

    @Override
    public void downloadFile(String bucket, String remoteFilePath, String localPath) {
        try {
            File localFile = new File(localPath);
            if (!localFile.getParentFile().exists()) {
                localFile.getParentFile().mkdirs();
            }
            DownloadFileRequest request = new DownloadFileRequest(bucket, remoteFilePath);
            request.setDownloadFile(localPath);
            // 默认5个任务并发下载
            request.setTaskNum(5);
            // 启动断点续传
            request.setEnableCheckpoint(true);
            ossClient.downloadFile(request);
        } catch (Throwable throwable) {
            log.error("文件下载失败：{}", remoteFilePath);
            throwable.printStackTrace();
        }
    }


}