package com.zhangmeng.minio.utils;

import com.zhangmeng.minio.model.BucketFile;
import io.minio.*;
import io.minio.errors.*;
import io.minio.http.Method;
import io.minio.messages.Bucket;
import io.minio.messages.Item;
import javafx.application.Platform;


import java.io.*;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * @author zhangmeng
 * @version 1.0
 * @date 2024-03-07 15:45
 */
public class MinioUtils {

    private static MinioClient minioClient = null;

    public static Map<String,Object> objectMap = new HashMap<>();
    public static String current_bucket = "current_bucket";
    public static String primaryStage = "primaryStage";
    public static String bucket_choose_action_stage = "bucket_choose_action_stage";
    public static String minioController = "minioController";

    public static MinioClient getDefault() {
        if (minioClient == null) {
            Object endpoint = objectMap.get("endpoint");
            Object accessKey = objectMap.get("accessKey");
            Object secretKey = objectMap.get("secretKey");
            if (endpoint == null ){
                Platform.runLater(()->{
                    AlertUtils.alert_warning("配置文件：endpoint 为空");
                });
                return null;
            }
            if (accessKey == null ){
                Platform.runLater(()->{
                    AlertUtils.alert_warning("配置文件：accessKey 为空");
                });
                return null;
            }

            if (secretKey == null ){
                Platform.runLater(()->{
                    AlertUtils.alert_warning("配置文件：secretKey 为空");
                });
                return null;
            }
            minioClient = MinioClient.builder().endpoint(endpoint.toString()).credentials(accessKey.toString(), secretKey.toString()).build();
        }
        return minioClient;
    }

    /**
     * 获得所有Bucket列表
     *
     * @return
     */
    public static List<Bucket> getAllBuckets() {
        try {
            return getDefault().listBuckets();
        } catch (ErrorResponseException | InsufficientDataException | InvalidKeyException | InternalException | InvalidResponseException | IOException | NoSuchAlgorithmException | ServerException | XmlParserException e) {
//            e.printStackTrace();
            Platform.runLater(()->{
                AlertUtils.alert_warning("获取Bucket列表失败,请核对配置信息");
            });
        }
        return null;
    }

    /**
     * 启动SpringBoot容器的时候初始化Bucket
     * 如果没有Bucket则创建
     *
     * @param bucketName
     */
    public static void createBucket(String bucketName) {
        if (!bucketExists(bucketName)) {
            try {
                getDefault().makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
            } catch (ErrorResponseException | InternalException | InvalidKeyException | InvalidResponseException | IOException | NoSuchAlgorithmException | XmlParserException | ServerException | InsufficientDataException e) {
                e.printStackTrace();
            }
        }else {
            Platform.runLater(()->{
                AlertUtils.alert_warning("bucket_name : "+ bucketName + "已存在");
            });
        }
    }

    /**
     * 判断Bucket是否存在，true：存在，false：不存在
     *
     * @param bucketName
     * @return
     */
    public static Boolean bucketExists(String bucketName) {
        try {
            return getDefault().bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
        } catch (ErrorResponseException | InsufficientDataException | InternalException | InvalidResponseException | NoSuchAlgorithmException | XmlParserException | ServerException | IOException | InvalidKeyException e) {
            e.printStackTrace();
        }
        return null;
    }

    public String DateFormatString(ZonedDateTime zonedDateTime){
        // 创建一个 DateTimeFormatter 对象，用于定义日期和时间的格式
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        // 使用 formatter 来格式化 ZonedDateTime 对象
        return zonedDateTime.format(formatter);
    }

    /**
     * 根据文件前置查询文件
     *
     * @param bucketName 存储桶
     * @param prefix     前缀
     * @param recursive  是否使用递归查询
     * @return MinioItem 列表
     */
    public static List<Item> getAllObjectsByPrefix(String bucketName,
                                            String prefix,
                                            boolean recursive) {
        List<Item> list = new ArrayList<>();
        Iterable<Result<Item>> objectsIterator = getDefault().listObjects(
                ListObjectsArgs.builder().bucket(bucketName).prefix(prefix).recursive(recursive).build());
        if (objectsIterator != null) {
            for (Result<Item> o : objectsIterator) {
                Item item = null;
                try {
                    item = o.get();
                } catch (ErrorResponseException | InsufficientDataException | InvalidKeyException |
                         InvalidResponseException | InternalException | IOException | NoSuchAlgorithmException |
                         ServerException | XmlParserException e) {
                    e.printStackTrace();
                }
                list.add(item);
            }
        }
        return list;
    }

    /**
     * 获得文件外链
     *
     * @param bucketName
     * @param objectName
     * @return url
     */
    public static String getPresignedObjectUrl(String bucketName, String objectName) {
        GetPresignedObjectUrlArgs args = GetPresignedObjectUrlArgs.builder()
                .bucket(bucketName)
                .object(objectName)
                .method(Method.GET).build();
        try {
            return getDefault() .getPresignedObjectUrl(args);
        } catch (ErrorResponseException | InsufficientDataException | InvalidKeyException | InvalidResponseException | NoSuchAlgorithmException | ServerException | XmlParserException | IOException | InternalException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static List<BucketFile> getFileList(String bucketName){
        List<Item> itemList = getAllObjectsByPrefix(bucketName, null, true);
        List<BucketFile> list = new ArrayList<>();
        if (itemList.size() > 0 ){
            list = itemList.stream().map(i -> {
                BucketFile bucketFile = new BucketFile();
                bucketFile.setBucketName(bucketName);
                bucketFile.setDir(i.isDir());
                bucketFile.setFileName(i.objectName());
                bucketFile.setSize(i.size());
                //获取url
                String presignedObjectUrl = getPresignedObjectUrl(bucketName, i.objectName());
                bucketFile.setUrl(presignedObjectUrl);
                return bucketFile;
            }).collect(Collectors.toList());
        }
        return list;
    }

    public static void upload_file(File file){
        //文件名
        String fileName = file.getName();
        String newFileName = System.currentTimeMillis() + "." + getFileExtension(fileName);
        String contentType = getContentType(file);
        String bucketName = objectMap.get(current_bucket).toString();
        if (bucketName == null){
            AlertUtils.alert_warning("上传的bucket不能为空!");
            return;
        }
        uploadFile(bucketName, file, newFileName, contentType);
    }

    public static String upload_file(File file,String path){
        //文件名
        String fileName = file.getName();
        String newFileName = System.currentTimeMillis() + "." + getFileExtension(fileName);
        String contentType = getContentType(file);
        String bucketName = objectMap.get(current_bucket).toString();
        if (bucketName == null){
            AlertUtils.alert_warning("上传的bucket不能为空!");
            return null;
        }
        uploadFile(bucketName, file, path + "/" + newFileName, contentType);
        return path + "/" + newFileName;
    }


    public static String getContentType(File file) {
        String fileName = file.getName();
        String extension = getFileExtension(fileName).toLowerCase();
        return switch (extension) {
            case "jpg", "jpeg" -> "image/jpeg";
            case "png" -> "image/png";
            case "mp4" -> "video/mp4";
            case "gif" -> "image/gif";
            case "txt" -> "text/plain";
            case "pdf" -> "application/pdf";
            case "doc" -> "application/msword";
            case "docx" -> "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
            case "xls" -> "application/vnd.ms-excel";
            case "xlsx" -> "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
            case "ppt" -> "application/vnd.ms-powerpoint";
            case "pptx" -> "application/vnd.openxmlformats-officedocument.presentationml.presentation";
            case "zip" -> "application/zip";
            case "tar" -> "application/x-tar";
            case "json" -> "application/json";
            case "html" -> "text/html";
            case "css" -> "text/css";
            case "js" -> "application/javascript";
            case "mp3" -> "audio/mp3";
            case "wav" -> "audio/wav";
            case "flac" -> "audio/flac";
            case "aac" -> "audio/aac";
            case "ogg" -> "audio/ogg";
            case "avi" -> "video/avi";
            case "mov" -> "video/quicktime";
            case "wmv" -> "video/x-ms-wmv";
            case "mkv" -> "video/x-matroska";
            case "flv" -> "video/x-flv";
            case "swf" -> "application/x-shockwave-flash";
            case "psd" -> "image/vnd.adobe.photoshop";
            case "ai" -> "application/postscript";
            case "eps" -> "application/postscript";
            case "ps" -> "application/postscript";
            case "svg" -> "image/svg+xml";
            case "tif" -> "image/tiff";
            case "tiff" -> "image/tiff";
            case "ico" -> "image/x-icon";
            case "md" -> "text/markdown";
            case "yaml" -> "text/yaml";
            case "yml" -> "text/yaml";
            case "xml" -> "text/xml";
            case "csv" -> "text/csv";
            case "tsv" -> "text/tab-separated-values";
            case "jsonl" -> "application/json-seq";
            case "bin" -> "application/octet-stream";
            case "exe" -> "application/octet-stream";
            case "dll" -> "application/octet-stream";
            case "so" -> "application/octet-stream";
            case "class" -> "application/octet-stream";
            case "war" -> "application/octet-stream";
            case "ear" -> "application/octet-stream";
            case "rar" -> "application/octet-stream";
            case "gz" -> "application/gzip";
            default -> "application/octet-stream";
        };
    }
    // 原生 Java 的等价方法
    public static String getFileExtension(String fileName) {
        if (fileName == null) return "";
        int lastDotIndex = fileName.lastIndexOf('.');
        // 判断没有点，或者点是第一个字符（例如 ".gitignore"）
        if (lastDotIndex == -1 || lastDotIndex == 0) {
            return fileName;
        }
        return fileName.substring(lastDotIndex + 1);
    }

    /**
     * 使用MultipartFile进行文件上传
     *
     * @param bucketName  存储桶
     * @param file        文件名
     * @param objectName  对象名
     * @param contentType 类型
     * @return
     */
    public static ObjectWriteResponse uploadFile(String bucketName, File file, String objectName, String contentType) {
        FileInputStream inputStream = null;
        try {
            inputStream = new FileInputStream(file);
           return minioClient.putObject(
                    PutObjectArgs.builder()
                            .bucket(bucketName)
                            .object(objectName)
                            .contentType(contentType)
                            .stream(inputStream,inputStream.available(), -1)
                            .build());
        } catch (IOException | XmlParserException | InternalException | InvalidKeyException | ErrorResponseException | ServerException | InsufficientDataException | InvalidResponseException | NoSuchAlgorithmException e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null){
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return null;
    }
}