/*
 * This file is part of Limbo.
 *
 * Copyright (C) 2022. LoohpJames <jamesloohp@gmail.com>
 * Copyright (C) 2022. Contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.loohp.limbo.consolegui;

import java.lang.management.ManagementFactory;
import java.text.NumberFormat;
import java.util.concurrent.TimeUnit;

import com.loohp.limbo.Limbo;

public class SystemInfo {
	
	public static void printInfo() {
		if (!Limbo.noGui) {
			while (true) {
				Runtime runtime = Runtime.getRuntime();

				NumberFormat format = NumberFormat.getInstance();

				StringBuilder sb = new StringBuilder();
				long maxMemory = runtime.maxMemory();
				long allocatedMemory = runtime.totalMemory();
				long freeMemory = runtime.freeMemory();

				sb.append("Free Memory: ").append(format.format(freeMemory / 1024 / 1024)).append(" MB\n");
				sb.append("Allocated Memory: ").append(format.format(allocatedMemory / 1024 / 1024)).append(" MB\n");
				sb.append("Max Memory: ").append(format.format(maxMemory / 1024 / 1024)).append(" MB\n");
				sb.append("Memory Usage: ").append(format.format((allocatedMemory - freeMemory) / 1024 / 1024)).append("/").append(format.format(maxMemory / 1024 / 1024)).append(" MB (").append(Math.round((double) (allocatedMemory - freeMemory) / (double) (maxMemory) * 100)).append("%)\n");
				sb.append("\n");

				try {
					@SuppressWarnings("restriction")
					com.sun.management.OperatingSystemMXBean operatingSystemMXBean = (com.sun.management.OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
					@SuppressWarnings("restriction")
					double processLoad = operatingSystemMXBean.getProcessCpuLoad();
					@SuppressWarnings("restriction")
					double systemLoad = operatingSystemMXBean.getSystemCpuLoad();				
					int processors = runtime.availableProcessors();
					
					sb.append("Available Processors: ").append(processors).append("\n");
					sb.append("Process CPU Load: ").append(Math.round(processLoad * 100)).append("%\n");
					sb.append("System CPU Load: ").append(Math.round(systemLoad * 100)).append("%\n");
					GUI.sysText.setText(sb.toString());
				} catch (Exception ignore) {}
				
				try {
					TimeUnit.MILLISECONDS.sleep(1000);
				} catch (InterruptedException ignored) {
				}
			}
		}
	}

}