package com.fdkankan.fyun.s3;

import cn.hutool.core.collection.CollUtil;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.model.*;
import com.fdkankan.fyun.constant.FYunConstants;
import com.fdkankan.fyun.face.AbstractFYunFileService;
import org.apache.commons.lang3.StringUtils;
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.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 = "aws")
public class S3FileService extends AbstractFYunFileService {

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

    @Autowired
    private AmazonS3 s3;

    @Override
    public String uploadFile(String bucket, byte[] data, String remoteFilePath){
        try {
            ObjectMetadata metadata = new ObjectMetadata();
            PutObjectRequest request = new PutObjectRequest(bucket, remoteFilePath, new ByteArrayInputStream(data), metadata);
            request.withCannedAcl(CannedAccessControlList.PublicRead);
            s3.putObject(request);
        } catch (Exception e) {
            log.error("s3上传文件失败", e);
        }
        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.info("要上传s3的文件不存在");
                return null;
            }

            // 设置文件并设置公读
            ObjectMetadata metadata = new ObjectMetadata();
            if (filePath.contains(".jpg")) {
                metadata.setContentType("image/jpeg");
            }
            if (filePath.contains(".png")) {
                metadata.setContentType("image/png");
            }
            if(org.apache.commons.lang3.ObjectUtils.isNotEmpty(headers)){
                for (Map.Entry<String, String> header : headers.entrySet()) {
                    metadata.setHeader(header.getKey(),header.getValue());
                }
            }
            PutObjectRequest request = new PutObjectRequest(bucket, remoteFilePath, file);
            request.withCannedAcl(CannedAccessControlList.PublicRead);
            request.withMetadata(metadata);

            // 上传文件
            PutObjectResult putObjectResult = s3.putObject(request);
            if (StringUtils.isNotEmpty(putObjectResult.getETag())) {
                log.info("s3上传文件成功：" + remoteFilePath);
            }
        } catch (Exception e) {
            log.error("文件上传失败：{}",filePath);
            e.printStackTrace();
        }
        return null;
    }

    @Override
    public String uploadFileByCommand(String bucket, String filePath, String remoteFilePath){
        String ossPath = bucket + "/" + remoteFilePath;
        try {
            String command = String.format(FYunConstants.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){
        if (remoteFilePath.startsWith("/")) {
            remoteFilePath = remoteFilePath.substring(1);
        }
        try {
            s3.deleteObject(bucket, remoteFilePath);
        } catch (Exception e) {
            log.error("s3删除文件失败,key=" + remoteFilePath, e);
        }
    }

    @Override
    public void deleteFolder(String bucket, String remoteFolderPath){
        try {
            int maxKeys = 200;
            String nextMaker = null;

            ListObjectsRequest listObjectsRequest = new ListObjectsRequest();
            listObjectsRequest.setBucketName(bucket);
            listObjectsRequest.setPrefix(remoteFolderPath);
            listObjectsRequest.setMaxKeys(maxKeys);

            com.amazonaws.services.s3.model.ObjectListing objectListing;
            do {
                listObjectsRequest.setMarker(nextMaker);
                objectListing = s3.listObjects(listObjectsRequest);
                List<S3ObjectSummary> objectSummaries = objectListing.getObjectSummaries();
                List<DeleteObjectsRequest.KeyVersion> keys = objectSummaries.stream().map(summary -> new DeleteObjectsRequest.KeyVersion(summary.getKey())).collect(Collectors.toList());

                DeleteObjectsRequest multiObjectDeleteRequest = new DeleteObjectsRequest(bucket)
                                .withKeys(keys).withQuiet(false);
                DeleteObjectsResult delObjRes = s3.deleteObjects(multiObjectDeleteRequest);
                int successfulDeletes = delObjRes.getDeletedObjects().size();
                log.info("删除aws文件成功，删除文件数;{}", successfulDeletes);
                nextMaker = objectListing.getNextMarker();
            } while (objectListing.isTruncated());
        } catch (Exception e) {
            log.error("删除was文件失败，path=" + remoteFolderPath, e);
        }
    }

    @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();
            listObjectsRequest.setBucketName(bucket);
            listObjectsRequest.setPrefix(sourcePath);
            listObjectsRequest.setMaxKeys(200);

            do {
                listObjectsRequest.setMarker(nextMaker);
                ObjectListing objectListing = s3.listObjects(listObjectsRequest);
                List<S3ObjectSummary> objectSummaries = objectListing.getObjectSummaries();
                List<String> collect = objectSummaries.stream().map(S3ObjectSummary::getKey).collect(Collectors.toList());
                if (CollUtil.isNotEmpty(collect)) {
                    keyList.addAll(collect);
                }
                nextMaker = objectListing.getNextMarker();
                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 -> {
				CopyObjectRequest request = new CopyObjectRequest(sourceBucketName, file, targetBucketName, file.replace(sourcePath, targetPath));
				request.withCannedAccessControlList(CannedAccessControlList.PublicRead);
				s3.copyObject(request);
            });
        } 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 {
			GetObjectRequest request  = new GetObjectRequest(bucketName,remoteFilePath);
			S3Object object = s3.getObject(request);
			S3ObjectInputStream inputStream = object.getObjectContent();
			StringBuilder content = new StringBuilder();
			try(BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))){
				while (true) {
					String line = reader.readLine();
					if (line == null) break;
					content.append(line);
				}
			} catch (IOException e) {
				log.error("读取aws文件流失败", e);
			}
            object.close();
			return content.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 s3.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();
            }
			GetObjectRequest request = new GetObjectRequest(bucket, remoteFilePath);
			s3.getObject(request,new File(localPath));
        } catch (Throwable throwable) {
            log.error("文件下载失败：{}", remoteFilePath);
            throwable.printStackTrace();
        }
    }
}