package net.sourceforge.fenixedu.domain.jobs;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

import net.sourceforge.fenixedu.domain.exceptions.DomainException;

import org.apache.axis.utils.ByteArrayOutputStream;
import org.apache.log4j.lf5.util.StreamUtils;

import pt.ist.fenixWebFramework.services.Service;

public class JobExecutionFileInput extends JobExecutionRequestor {
    private static final String FILE_INPUT = "fileInput";

    private String filename;

    private String contentType;

    private transient InputStream stream;

    private transient byte[] content;

    public JobExecutionFileInput() {
	super();
    }

    public void setInputStream(InputStream stream) {
	this.stream = stream;
    }

    public InputStream getInputStream() {
	try {
	    if (content == null && stream != null) {
		ByteArrayOutputStream output = new ByteArrayOutputStream();
		StreamUtils.copyThenClose(stream, output);
		content = output.toByteArray();
	    } else if (content == null && getFileInput() != null) {
		content = getFileInput().getContent();
	    }
	    return content != null ? new ByteArrayInputStream(content) : null;
	} catch (IOException e) {
	    throw new DomainException("error.job.ioexception", e);
	}
    }

    public void setInputFilename(String filename) {
	this.filename = filename;
    }

    public String getInputFilename() {
	return filename;
    }

    public void setInputContentType(String contentType) {
	this.contentType = contentType;
    }

    public String getInputContentType() {
	return contentType;
    }

    public void setFileInput(JobFileInput input) {
	setDomainObject(FILE_INPUT, input);
    }

    public JobFileInput getFileInput() {
	return getDomainObject(FILE_INPUT);
    }

    @Override
    public boolean isFormInputNeeded() {
	return true;
    }

    @Service
    public void saveFile() {
	getInputStream(); // force consumption
	JobFileInput input = new JobFileInput(getInputFilename(), content);
	input.setContentType(getInputContentType());
	setFileInput(input);
    }
}