package at.gv.egiz.pdfas.lib.impl.preprocessor;

import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import at.gv.egiz.pdfas.common.exceptions.PDFASError;
import at.gv.egiz.pdfas.lib.api.Configuration;
import at.gv.egiz.pdfas.lib.api.preprocessor.PreProcessor;
import at.gv.egiz.pdfas.lib.api.sign.SignParameter;
import at.gv.egiz.pdfas.lib.api.verify.VerifyParameter;

public class DebugPreProcessor implements PreProcessor {

	private static final Logger logger = LoggerFactory
			.getLogger(DebugPreProcessor.class);
	
	private static final String NAME = "Debug PreProcessor";
	
	@Override
	public void initialize(Configuration configuration) {
		logger.debug("Initializing {}", getName());
	}

	private void listPPArguments(Map<String, String> map) {
		if(map != null) {
			logger.debug("pre processor arguments:");
			Iterator<Entry<String, String>> entryIt = map.entrySet().iterator();
			while(entryIt.hasNext()) {
				Entry<String, String> entry = entryIt.next();
				logger.debug("  {} => {}", entry.getKey(), entry.getValue());
			}
		} else {
			logger.debug("No pre processor arguments");
		}
	}
	
	@Override
	public void sign(SignParameter parameter) throws PDFASError {
		logger.debug("preprocessor signing ...");
		
		listPPArguments(parameter.getPreprocessorArguments());
		
		logger.debug("preprocessor signing done");
	}

	@Override
	public void verify(VerifyParameter parameter) throws PDFASError {
		logger.debug("preprocessor verifing ...");
		
		listPPArguments(parameter.getPreprocessorArguments());
		
		logger.debug("preprocessor verifing done");
	}

	@Override
	public int registrationPosition() {
		return -1;
	}

	@Override
	public String getName() {
		return NAME;
	}

}