package envoy.client.ui;

import java.util.logging.Level;
import java.util.logging.Logger;

import envoy.client.data.*;
import envoy.client.net.Client;
import envoy.client.net.WriteProxy;
import envoy.data.Message;
import envoy.util.EnvoyLog;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

/**
 * Project: <strong>envoy-client</strong><br>
 * File: <strong>Startup.java</strong><br>
 * Created: <strong>26.03.2020</strong><br>
 * 
 * @author Kai S. K. Engelbart
 * @since Envoy Client v0.1-beta
 */
public final class Startup extends Application {

	private LocalDB		localDB;
	private Client		client;
	private WriteProxy	writeProxy;
	private Cache<Message>	cache;

	private static final ClientConfig	config	= ClientConfig.getInstance();
	private static final Logger			logger	= EnvoyLog.getLogger(Startup.class);

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void init() throws Exception {
		// try {
		// // Load the configuration from client.properties first
		// Properties properties = new Properties();
		// properties.load(Startup.class.getClassLoader().getResourceAsStream("client.properties"));
		// config.load(properties);
		//
		// // Override configuration values with command line arguments
		// String[] args = getParameters().getRaw().toArray(new String[0]);
		// if (args.length > 0) config.load(args);
		//
		// // Check if all mandatory configuration values have been initialized
		// if (!config.isInitialized()) throw new EnvoyException("Configuration is not
		// fully initialized");
		// } catch (Exception e) {
		// JOptionPane.showMessageDialog(null, "Error loading configuration values:\n" +
		// e, "Configuration error", JOptionPane.ERROR_MESSAGE);
		// e.printStackTrace();
		// System.exit(1);
		// }
		//
		// // Setup logger for the envoy package
		// EnvoyLog.initialize(config);
		// EnvoyLog.attach("envoy");
		// EnvoyLog.setFileLevelBarrier(config.getFileLevelBarrier());
		// EnvoyLog.setConsoleLevelBarrier(config.getConsoleLevelBarrier());
		//
		// // Initialize the local database
		// if (config.isIgnoreLocalDB()) {
		// localDB = new TransientLocalDB();
		// JOptionPane.showMessageDialog(null,
		// "Ignoring local database.\nMessages will not be saved!",
		// "Local database warning",
		// JOptionPane.WARNING_MESSAGE);
		// } else try {
		// localDB = new PersistentLocalDB(new File(config.getHomeDirectory(),
		// config.getLocalDB().getPath()));
		// } catch (IOException e3) {
		// logger.log(Level.SEVERE, "Could not initialize local database", e3);
		// JOptionPane.showMessageDialog(null, "Could not initialize local database!\n"
		// + e3, "Local database error", JOptionPane.ERROR_MESSAGE);
		// System.exit(1);
		// return;
		// }
		//
		// // Initialize client and unread message cache
		// client = new Client();
		// cache = new Cache<>();
		//
		// // Try to connect to the server
		// new LoginDialog(client, localDB, cache);
		//
		// // Set client user in local database
		// localDB.setUser(client.getSender());
		//
		// // Initialize chats in local database
		// try {
		// localDB.initializeUserStorage();
		// localDB.loadUserData();
		// } catch (FileNotFoundException e) {
		// // The local database file has not yet been created, probably first login
		// } catch (Exception e) {
		// e.printStackTrace();
		// JOptionPane.showMessageDialog(null,
		// "Error while loading local database: " + e + "\nChats will not be stored
		// locally.",
		// "Local DB error",
		// JOptionPane.WARNING_MESSAGE);
		// }
		//
		// // Initialize write proxy
		// writeProxy = client.createWriteProxy(localDB);
		//
		// if (client.isOnline()) {
		//
		// // Save all users to the local database and flush cache
		// localDB.setUsers(client.getUsers());
		// writeProxy.flushCache();
		// } else
		// // Set all contacts to offline mode
		// localDB.getUsers().values().stream().filter(u -> u !=
		// localDB.getUser()).forEach(u -> u.setStatus(UserStatus.OFFLINE));
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void start(Stage stage) throws Exception {

		// Prepare stage and load ChatScene
		var	loader		= new FXMLLoader(getClass().getResource("ChatScene.fxml"));
		var	anchorPane	= loader.<GridPane>load();
		var	chatScene	= new Scene(anchorPane);
		stage.setTitle("Envoy");
		stage.getIcons().add(new Image(getClass().getResourceAsStream("/icons/envoy_logo.png")));
		stage.setScene(chatScene);
		stage.show();

		// Relay unread messages from cache
		if (cache != null && client.isOnline()) cache.relay();
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void stop() throws Exception {
		try {

			// Save Settings and PersistentLocalDB on shutdown
			logger.info("Closing connection...");
			client.close();

			logger.info("Saving local database and settings...");
			localDB.save();
			Settings.getInstance().save();
		} catch (Exception e) {
			logger.log(Level.SEVERE, "Unable to save local files", e);
		}
	}

	public static void main(String[] args) { launch(args); }
}