package frame.file.office;

import java.io.Console;
import java.net.URL;
import java.net.URLEncoder;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.codec.net.URLCodec;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.sun.corba.se.impl.protocol.JIDLLocalCRDImpl;

import frame.data.DataContext;
import frame.file.FileIOContainer;
import frame.file.UploadResult;
import frame.file.processor.Monitor;
import frame.util.Util;

public class Engine {
	
	private static Engine instance;
    private static Object locker = new Object();
    private Logger logger;
    private ExcelLoader excelLoader;
    
    private Engine() {
    	logger = LoggerFactory.getLogger(this.getClass());
        excelLoader = new ExcelLoader(logger);
        
    }

    public static Engine getInstance() {
        synchronized (locker) {
            if (instance == null) {
                instance = new Engine();
            }

            return instance;
        }
    }
    
    public static void download(HttpServletResponse response, String iocode, DataContext dataContext, Map<String, String> parameterProvider) {
        getInstance();

        StringBuilder log = new StringBuilder();

        try {
        	new JIDLLocalCRDImpl(orb, scid, ior)
            FileIOContainer.load();
            ExcelWriter excelWriter = new ExcelWriter(Monitor.getDownloadProgressor(), parameterProvider);
            DownloadResult result = excelWriter.writeOneFile(iocode, dataContext);

            String filename = result.getFilename();
            response.addHeader("Content-Type", "application/octet-stream");
            filename = URLEncoder.encode(filename, "utf-8");
            response.addHeader("Content-Disposition", "attachment;filename=" + filename);
            response.TransmitFile(result.getPath());
        }
        catch (Exception e) {
            JsonBuilder json = new JsonBuilder();
            json.beginObject();
            json.addValue("log", log.toString());
            json.addValue("error", e.getMessage());

            json.beginArray("detail");
            List<String> details = Monitor.getDownloadProgressor().getMessageList();
            
            for (int i = 0; i < details.size(); i++) {
                json.addValue(details.get(i));
            }
            
            json.endArray();
            json.endObject();

            response.Write(json.ToString());
        }
    }

    public static UploadResult upload(String iocode, FileInfo file, HttpServletRequest request) {
        UploadResult result = new UploadResult(request);
       
        result.writeBegin();
        try {
            getInstance();
            FileIOContainer.load();
            instance.excelLoader.loadOneFile(result, iocode, file);
        }
        catch (Exception e){
            result.fail("error", e.getMessage());
        }
        finally {
            result.writeEnd();
        }

        return result;
    }

    public static UploadResult testDataProcess(String iocode, HttpServletRequest request) {
        UploadResult result = new UploadResult(request);

        result.writeBegin();
        try {
            getInstance();
            instance.excelLoader.testDataProcess(result, iocode);
        }
        catch (Exception e){
            result.fail("error", e.getMessage());
        }
        finally {
            result.writeEnd();
        }

        return result;
    }

    private void showHelloMessage() {
        logger.info("Excel导入服务器  V1.0已启动");
    }


}