package com.lx.product.seal.log;

import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Logger {
    private Logger() {
    }

    private static class LoggerHolder {
        private static final Logger LOGGER = new Logger();
    }

    private static File logFile;
    private static OutputStreamWriter loger;

    public static final int ERROR_TYPE = 0;//错误日志
    public static final int INFO_TYPE = 1;//普通日志
    public static final SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
    public static final SimpleDateFormat formats = new SimpleDateFormat("yyyyMMddHHmmss");
    public static final SimpleDateFormat formatd = new SimpleDateFormat("yyyyMMdd");

    static {
        File menu = new File("logs");
        if (!menu.exists() || !menu.isDirectory()) {
            menu.mkdirs();
        }
        logFile = new File("logs" + File.separator + "install_" + formats.format(new Date()) + ".log");
        if (!logFile.exists()) {
            System.out.println("日志文件不存在：" + logFile.getAbsolutePath());
            try {
                logFile.createNewFile();
                System.out.println("已创建日志文件：" + logFile.getAbsolutePath());
            } catch (Exception e) {
                System.out.println("创建日志文件失败：" + logFile.getAbsolutePath() + "," + e.getMessage());
            }
        }
        try {
            loger = new OutputStreamWriter(new FileOutputStream(logFile), "utf-8");
        } catch (Exception e) {
            System.out.println("初始日志文件失败：" + logFile.getAbsolutePath() + "," + e.getMessage());
        }
    }

    /**
     * 获取日志实例
     * @return
     */
    public static Logger getInstance() {
        return LoggerHolder.LOGGER;
    }

    /**
     * 写日志
     * @param message
     * @param type
     * @return
     */
    public boolean writeInfo(String message, int type) {
        if (loger != null) {
            try {
                loger.write("【");
                if (type == this.ERROR_TYPE)
                    loger.write("ERROR");
                else
                    loger.write("INFO ");
                loger.write(" " + format.format(new Date()));
                loger.write("】 ");
                loger.write(message);
                loger.write("\r\n");
                loger.flush();
                return true;
            } catch (Exception e) {
                System.out.println("日志写入错误：" + logFile.getAbsolutePath() + "," + e.getMessage());
            }
        }
        return false;
    }

    public void closeLogger() {
        if (loger != null) {
            try {
                loger.close();
            } catch (Exception e) {
                System.out.println("日志写入错误：" + logFile.getAbsolutePath() + "," + e.getMessage());
            }
        }
    }
}