package com.zzsn.common.util;

import lombok.extern.slf4j.Slf4j;
import com.zzsn.common.constant.CommonConstant;
import com.zzsn.common.constant.DataBaseConstant;
import com.zzsn.common.exception.JeecgBootException;
import com.zzsn.common.util.oss.OssBootUtil;
import org.jeecgframework.poi.util.PoiPublicUtil;
import org.springframework.util.FileCopyUtils;
import org.springframework.web.multipart.MultipartFile;

import javax.sql.DataSource;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;

@Slf4j
public class CommonUtils {

    public static String uploadOnlineImage(byte[] data,String basePath,String bizPath,String uploadType){
        String dbPath = null;
        String fileName = "image" + Math.round(Math.random() * 100000000000L);
        fileName += "." + PoiPublicUtil.getFileExtendName(data);
        try {
            if(CommonConstant.UPLOAD_TYPE_LOCAL.equals(uploadType)){
                File file = new File(basePath + File.separator + bizPath + File.separator );
                if (!file.exists()) {
                    file.mkdirs();// 创建文件根目录
                }
                String savePath = file.getPath() + File.separator + fileName;
                File savefile = new File(savePath);
                FileCopyUtils.copy(data, savefile);
                dbPath = bizPath + File.separator + fileName;
            }else {
                InputStream in = new ByteArrayInputStream(data);
                String relativePath = bizPath+"/"+fileName;
                if(CommonConstant.UPLOAD_TYPE_MINIO.equals(uploadType)){
                    dbPath = MinioUtil.upload(in,relativePath);
                }else if(CommonConstant.UPLOAD_TYPE_OSS.equals(uploadType)){
                    dbPath = OssBootUtil.upload(in,relativePath);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return dbPath;
    }

    /**
     * 判断文件名是否带盘符，重新处理
     * @param fileName
     * @return
     */
    public static String getFileName(String fileName){
        //判断是否带有盘符信息
        // Check for Unix-style path
        int unixSep = fileName.lastIndexOf('/');
        // Check for Windows-style path
        int winSep = fileName.lastIndexOf('\\');
        // Cut off at latest possible point
        int pos = (winSep > unixSep ? winSep : unixSep);
        if (pos != -1)  {
            // Any sort of path separator found...
            fileName = fileName.substring(pos + 1);
        }
        //替换上传文件名字的特殊字符
        fileName = fileName.replace("=","").replace(",","").replace("&","");
        return fileName;
    }

    /**
    * 统一全局上传
    * @Return: java.lang.String
    */
    public static String upload(MultipartFile file, String bizPath, String uploadType) {
        String url = "";
        if(CommonConstant.UPLOAD_TYPE_MINIO.equals(uploadType)){
            url = MinioUtil.upload(file,bizPath);
        }else{
            url = OssBootUtil.upload(file,bizPath);
        }
        return url;
    }

    /** 当前系统数据库类型 */
    private static String DB_TYPE = "";
    public static String getDatabaseType() {
        if(oConvertUtils.isNotEmpty(DB_TYPE)){
            return DB_TYPE;
        }
        DataSource dataSource = SpringContextUtils.getApplicationContext().getBean(DataSource.class);
        try {
            return getDatabaseTypeByDataSource(dataSource);
        } catch (SQLException e) {
            //e.printStackTrace();
            log.warn(e.getMessage());
            return "";
        }
    }

    /**
     * 获取数据库类型
     * @param dataSource
     * @return
     * @throws SQLException
     */
    private static String getDatabaseTypeByDataSource(DataSource dataSource) throws SQLException{
        if("".equals(DB_TYPE)) {
            Connection connection = dataSource.getConnection();
            try {
                DatabaseMetaData md = connection.getMetaData();
                String dbType = md.getDatabaseProductName().toLowerCase();
                if(dbType.indexOf("mysql")>=0) {
                    DB_TYPE = DataBaseConstant.DB_TYPE_MYSQL;
                }else if(dbType.indexOf("oracle")>=0) {
                    DB_TYPE = DataBaseConstant.DB_TYPE_ORACLE;
                }else if(dbType.indexOf("sqlserver")>=0||dbType.indexOf("sql server")>=0) {
                    DB_TYPE = DataBaseConstant.DB_TYPE_SQLSERVER;
                }else if(dbType.indexOf("postgresql")>=0) {
                    DB_TYPE = DataBaseConstant.DB_TYPE_POSTGRESQL;
                }else {
                    throw new JeecgBootException("数据库类型:["+dbType+"]不识别!");
                }
            } catch (Exception e) {
                log.error(e.getMessage(), e);
            }finally {
                connection.close();
            }
        }
        return DB_TYPE;

    }

}
