package at.gv.egiz.simpleSigning.cfg;

import java.io.FileInputStream;
import java.util.Properties;

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

public class Configuration {

	public static final String CONF_FILE = "simpleSign.config";
	
	public static final String PUBLIC_HOST = "publichost";
	public static final String PUBLIC_CONTEXT = "publiccontext";
	public static final String PDF_AS_LOCATION = "pdfasurl";
	public static final String LOG4J_FILE = "log4j";
	
	private static final Logger logger = LoggerFactory.getLogger(Configuration.class);
	
	private static Properties properties = new Properties();
	
	public static void configure() {
		
		String config = System.getProperty(CONF_FILE);
		
		if(config == null) {
			logger.error("No web configuration provided! Please specify: " + CONF_FILE);
			throw new RuntimeException("No web configuration provided! Please specify: " + CONF_FILE);
		}
		
		properties.clear();

		try {
			properties.load(new FileInputStream(config));
		} catch (Exception e) {
			logger.error("Failed to load configuration: " + e.getMessage());
			throw new RuntimeException(e);
		}
	}
	
	private static String getStringValue(String configKey, String defaultValue) {
		String value = properties.getProperty(configKey);
		if(value == null) {
			value = defaultValue;
		}
		return value;
	}
	
	public static String getPublicHost() {
		return getStringValue(PUBLIC_HOST, "http://demo.egiz.gv.at");
	}
	
	public static String getPublicContext() {
		return getStringValue(PUBLIC_CONTEXT, "/signSimple");
	}
	
	public static String getPublicUrl() {
		return getPublicHost() + getPublicContext();
	}
	
	public static String getPDFAsLocation() {
		return getStringValue(PDF_AS_LOCATION, "http://demo.egiz.gv.at/pdf-as-web");
	}
	
	public static String getLog4J() {
		return getStringValue(LOG4J_FILE, "log4j.properties");
	}
}