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package models;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import org.apache.log4j.Logger;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;

public class Configuration {

	private static final Logger LOGGER = Logger.getLogger(Configuration.class);
	private static final DateTimeFormatter subdirDate = DateTimeFormat.forPattern("yy-MM");

	private static File vmStoreBasePath;
	private static File vmStoreProdPath;
	private static String dbUri;
	private static String dbUsername;
	private static String dbPassword;

	public static boolean load() throws IOException {
		// Load configuration from java properties file
		Properties prop = new Properties();
		InputStream in = new FileInputStream("./config.properties");
		try {
			prop.load(in);
		} finally {
			in.close();
		}

		vmStoreBasePath = new File(prop.getProperty("vmstore.path"));
		vmStoreProdPath = new File(vmStoreBasePath, "prod");
		dbUri = prop.getProperty("db.uri");
		dbUsername = prop.getProperty("db.username");
		dbPassword = prop.getProperty("db.password");

		// Currently all fields are mandatory but there might be optional settings in the future
		return vmStoreBasePath != null && dbUri != null && dbUsername != null && dbPassword != null;
	}

	// Static ("real") fields

	public static File getVmStoreBasePath() {
		return vmStoreBasePath;
	}

	public static String getDbUri() {
		return dbUri;
	}

	public static String getDbUsername() {
		return dbUsername;
	}

	public static String getDbPassword() {
		return dbPassword;
	}

	public static File getVmStoreProdPath() {
		return vmStoreProdPath;
	}

	// Dynamically Computed fields

	public static File getCurrentVmStorePath() {
		return new File(vmStoreProdPath, subdirDate.print(System.currentTimeMillis()));
	}

}