/*
  Proto - Ein Rumpf-Konstrukt fuer Webapps 
  Copyright (C) 2021  Ulrich Hilger

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU Affero General Public License as
  published by the Free Software Foundation, either version 3 of the
  License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU Affero General Public License for more details.

  You should have received a copy of the GNU Affero General Public License
  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package de.uhilger.proto;

import com.sun.net.httpserver.HttpServer;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.ResourceBundle;
import java.util.concurrent.Executors;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Die Hauptklasse der Proto-App
 * 
 * Starten mit
 * java -jar proto.jar ctx=/proto www=./www port=8008 
 *  
 * @author Ulrich Hilger
 * @version 1, 11.5.2021
 */
public class App {
  
  /* Name des ResourceBundles dieser App */
  public static final String RB_NAME = "proto";
  
  public static final String RB_SERVER_START_MSG = "msgServerStart";

  public static final String API_SERVER_STOP = "/api/server/stop";
  public static final String STR_SLASH = "/";
  
  public static final String ARG_WWW = "www";
  public static final String ARG_CTX = "ctx";
  public static final String ARG_PORT = "port";

  /**
   * Parameter:
   * port=[portnr] (9123)
   * ctx=[context] (/proto)
   * www=[www-dir] ("./www")
   * 
   * @param args the command line arguments
   */
  public static void main(String[] args) {
    
    try {      
      ResourceBundle rb = ResourceBundle.getBundle(RB_NAME);
      HashMap<String,String> initParams = new HashMap();
      for (String arg : args) {
        String[] argParts = arg.split("=");
        initParams.put(argParts[0], argParts[1]);
      }
      Logger.getLogger(App.class.getName()).log(Level.INFO, rb.getString(RB_SERVER_START_MSG), initParams.get(ARG_PORT));
      
      String ctx = initParams.get(ARG_CTX);
      HttpServer server = HttpServer.create(new InetSocketAddress(Integer.parseInt(initParams.get(ARG_PORT))), 0);
      server.createContext(ctx + STR_SLASH, new FileHandler(initParams.get(ARG_WWW)));
      server.createContext(ctx + API_SERVER_STOP, new StopServerHandler());
      server.setExecutor(Executors.newCachedThreadPool());
      server.start();
    } catch (IOException ex) {
      Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
    }
  }
  
}