package com.thhy.filectrl.utils;

import com.thhy.general.common.BasicStatus;
import com.thhy.general.exception.BasicException;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.concurrent.TimeUnit;

public class ConvertUtil {

    private static Logger logger = LoggerFactory.getLogger(ConvertUtil.class);

    /**
     * 格式转换方法
     * <p>
     * 統一把文件转换成pdf文件
     *
     * @param workspace 文件格式转换命令   例：/usr/bin/unoconv -f pdf  /app/1.pptx
     * @throws Exception 格式转换过程中的异常
     */
    public static void executeCommand(String workspace,String fileName){

        StringBuffer output = new StringBuffer();
        Process process;
        InputStreamReader inputStreamReader = null;
        BufferedReader reader = null;
        try {
            String command = "/usr/bin/unoconv -f pdf "+workspace+"/"+fileName;
            logger.info("执行命令"+command);
            process = Runtime.getRuntime().exec(command);

            new Thread() {
                @Override
                public void run() {
                    BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()));
                    String line = null;

                    try {
                        while ((line = in.readLine()) != null) {
                            logger.info("执行的结果为: "+line);
                        }
                    } catch (IOException e) {
                        e.printStackTrace();
                    } finally {
                        try {
                            in.close();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                }
            }.start();

            new Thread(){
                @Override
                public void run()
                {
                    BufferedReader err = new BufferedReader(new InputStreamReader(process.getErrorStream()));
                    String line = null;
                    StringBuilder result=new StringBuilder();
                    try
                    {
                        while((line = err.readLine()) != null)
                        {
                            result.append(line);
                        }
                        logger.info("错误信息："+result);
                    }
                    catch (IOException e)
                    {
                        e.printStackTrace();
                    }
                    finally
                    {
                        try
                        {
                            err.close();
                        }
                        catch (IOException e)
                        {
                            e.printStackTrace();
                        }
                    }
                }
            }.start();

            int ii = process.waitFor();
            logger.info("执行命令完成"+ii);

            /*if(!result){
                logger.info("执行命令失败");
                throw new BasicException(BasicStatus.FILE_CONVERT_FAILD);
            }*/
            if(ii!=0){
                logger.info("执行命令失败");
                throw new BasicException(BasicStatus.FILE_CONVERT_FAILD);
            }
            inputStreamReader = new InputStreamReader(process.getInputStream(), "UTF-8");
            reader = new BufferedReader(inputStreamReader);
            String line = "";
            while ((line = reader.readLine()) != null) {
                output.append(line + "\n");
            }
            //p.destroy();//这个一般不需要
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            IOUtils.closeQuietly(reader);
            IOUtils.closeQuietly(inputStreamReader);
        }
    }
}