package net.sourceforge.fenixedu.presentationTier.Action.commons;

import java.io.Serializable;
import java.io.StringWriter;

import net.sourceforge.fenixedu.domain.exceptions.DomainException;
import pt.ist.fenixWebFramework.services.Service;

import com.qubit.fenixframework.plugins.job.JavaCodeJob;

@SuppressWarnings("serial")
public class JavaCodeJobBean implements Serializable {
    private JavaCodeJob job;

    private String className;

    private String source;

    public JavaCodeJobBean() {
	setSource(getDefaultSource());
    }

    public JavaCodeJobBean(JavaCodeJob job) {
	this.job = job;
	this.className = job.getClassName();
	this.source = job.getSource();
    }

    public JavaCodeJobBean(String className, String source) {
	this.className = className;
	this.source = source;
    }

    public String getClassName() {
	return className;
    }

    public void setClassName(String className) {
	this.className = className;
    }

    public String getSource() {
	return source;
    }

    public void setSource(String source) {
	this.source = source;
    }

    @Service
    public JavaCodeJob saveJob() throws DomainException {
	StringWriter out = new StringWriter();
	try {
	    JavaCodeJob.compileAndLoad(className, source, out);
	} catch (Throwable e) {
	    throw new DomainException("error.jobs.compile", e, out.toString());
	}
	if (job != null) {
	    job.setClassName(className);
	    job.setSource(source);
	    return job;
	}
	return new JavaCodeJob(className, source);
    }

    private String getDefaultSource() {
	final StringBuilder result = new StringBuilder();

	result.append("import java.io.PrintStream;\n");
	result.append("\n");
	result.append("import net.sourceforge.fenixedu.domain.jobs.JobExecutionRequestor;\n");
	result.append("\n");
	result.append("import com.qubit.fenixframework.plugins.job.JobExecutionResult;\n");
	result.append("import com.qubit.fenixframework.plugins.job.JobExecutor;\n");
	result.append("\n");
	result.append("public class Example implements JobExecutor<JobExecutionRequestor> {\n");
	result.append("    @Override\n");
	result.append("    public JobExecutionResult execute(JobExecutionRequestor arguments, PrintStream printer) {\n");
	result.append("    }\n");
	result.append("\n");
	result.append("    @Override\n");
	result.append("    public String getExecutionDescription() {\n");
	result.append("        return \"Example\";\n");
	result.append("    }\n");
	result.append("\n");
	result.append("    @Override\n");
	result.append("    public boolean isToRepeatOnFail() {\n");
	result.append("        return false;\n");
	result.append("    }\n");
	result.append("\n");
	result.append("    @Override\n");
	result.append("    public Class<? extends JobExecutionRequestor> getContextArgumentsType() {\n");
	result.append("        return JobExecutionRequestor.class;\n");
	result.append("    }\n");
	result.append("\n");
	result.append("}\n");

	return result.toString();
    }
}