package net.curisit.securis;

import java.io.File;
import java.net.URISyntaxException;
import java.util.Date;

import net.curisit.securis.utils.Params;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.PosixParser;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class License {

	static {
		// BasicConfigurator.configure(new ConsoleAppender());
		// PropertyConfigurator.configure("/log4j.xml");
		// LogManager.getRootLogger().
	}

	// private static final Logger log = LoggerFactory.getLogger(License.class);
	private static final Logger log = LogManager.getLogger(License.class);

	public static void main(String[] args) throws URISyntaxException {
		// Configuration conf = XMLConfigurationFactory.getInstance().getConfiguration("config", License.class.getResource("/log4j.xml").toURI());

		log.info("Tool init {}", new Date());

		checkConfigFile();
		CommandLine cmd = getCommandLine(args);

		try {
			if (cmd.hasOption('g')) {
				String filename = cmd.getOptionValue("rfile");
				if (filename == null)
					filename = "./license.req";
				File file = new File(filename);
				LicenseManager.getInstance().createRequestFile(file);
				log.info("Request file {} generated OK", file.getAbsolutePath());
				System.exit(0);
			}

			if (cmd.hasOption('l')) {
				String filename = cmd.getOptionValue("validate");
				if (filename == null)
					filename = "./license.lic";
				File file = new File(filename);
				try {
					LicenseManager.getInstance().validateLicense(file);
					log.info("License file {} is valid", file.getAbsolutePath());
				} catch (SeCurisException e) {
					log.info("License file {} is NOT valid", file.getAbsolutePath());
				}

				System.exit(0);
			}

		} catch (SeCurisException e) {
			log.error("The command generated an error: {}", e.toString());
		}
	}

	/**
	 * Checks that config file exists and contains mandatory parameters
	 */
	private static void checkConfigFile() {
		String appCode = Params.get(Params.KEYS.APPLICATION_CODE);
		if (appCode == null) {
			log.error("Manadatory parameter {} is not set in config file", Params.KEYS.APPLICATION_CODE);
			System.exit(-3);
		}
		String customerCode = Params.get(Params.KEYS.CUSTOMER_CODE);
		if (customerCode == null) {
			log.error("Manadatory parameter {} is not set in config file", Params.KEYS.CUSTOMER_CODE);
			System.exit(-4);
		}
	}

	private static CommandLine getCommandLine(String[] args) {
		Options ops = prepareOptionCLI();
		if (args.length == 0) {
			printHelp(ops);
		}
		CommandLineParser parser = new PosixParser();
		CommandLine cmd = null;
		try {
			cmd = parser.parse(ops, args);
		} catch (ParseException e) {
			printHelp(ops);
		}

		if (cmd.hasOption('h')) {
			printHelp(ops);
		}

		return cmd;
	}

	private static void printHelp(Options ops) {
		HelpFormatter formatter = new HelpFormatter();
		formatter.printHelp("securis-client", ops, true);
		System.exit(-1);
	}

	@SuppressWarnings("static-access")
	private static Options prepareOptionCLI() {
		Options options = new Options();

		options.addOption("h", "help", false, "Show help.");
		options.addOption(OptionBuilder.withArgName("req_file").withLongOpt("rfile").withDescription("Set request file for its generation or for license requesting.").hasArg(true).create('r'));
		options.addOption(OptionBuilder.withArgName("url_license_server").withLongOpt("server").withDescription("License server url.").hasArg(true).create('s'));
		options.addOption(OptionBuilder.withArgName("lic_file").withLongOpt("validate").withDescription("Validate lic file.").hasArg(true).create('l'));

		options.addOption("g", "gen_request", false, "Generate request file. If --rfile parameter is missing then It is generated in current directory.");
		options.addOption("c", "create", false, "Request a license file from server. --rfile and --server parameters are mandatory.");
		options.addOption("t", "test_lc", false, "Test if License Server (LC) is available. --server parameter is mandatory.");
		options.addOption(OptionBuilder.withArgName("lic_file").withLongOpt("sync").withDescription("Synchronize/renew the current license file. --server parameter is mandatory.").hasArg(true).create('y'));

		return options;
	}
}