/**
 * Copyright 2012-2017 Red Hat, Inc.
 *
 * Thermostat is distributed under the GNU General Public License,
 * version 2 or any later version (with a special exception described
 * below, commonly known as the "Classpath Exception").
 *
 * A copy of GNU General Public License (GPL) is included in this
 * distribution, in the file COPYING.
 *
 * Linking Thermostat code with other modules is making a combined work
 * based on Thermostat.  Thus, the terms and conditions of the GPL
 * cover the whole combination.
 *
 * As a special exception, the copyright holders of Thermostat give you
 * permission to link this code with independent modules to produce an
 * executable, regardless of the license terms of these independent
 * modules, and to copy and distribute the resulting executable under
 * terms of your choice, provided that you also meet, for each linked
 * independent module, the terms and conditions of the license of that
 * module.  An independent module is a module which is not derived from
 * or based on Thermostat code.  If you modify Thermostat, you may
 * extend this exception to your version of the software, but you are
 * not obligated to do so.  If you do not wish to do so, delete this
 * exception statement from your version.
 */

export class ExtractClassService {
  extract (fullClassName = '', includePkg = false) {

    if (fullClassName.indexOf('.') === -1) {
      return fullClassName;
    }

    // remove paths, which are sometimes present when running JARs
    if (fullClassName.indexOf('/') !== -1) {
      fullClassName = fullClassName.substring(fullClassName.lastIndexOf('/') + 1);
    }

    let split = fullClassName.split('.');
    const idx = split.length - 1;

    // return filename if mainClass is a JAR
    if (split[idx].toLowerCase() === 'jar') {
      return fullClassName;
    }

    // include first letter of package names, ex. c.r.t.m.Thermostat
    let className = split[idx];
    let pkg = '';
    if (includePkg) {
      for (let i = 0; i < idx; i++) {
        pkg += split[i].charAt(0) + '.';
      }
    }
    return pkg + className;
  }
}

export function init () {
  angular
    .module('app.services')
    .service('extractClassService', ExtractClassService);
}