package fr.wolf.config;

import java.io.BufferedWriter;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Calendar;
import java.util.logging.Handler;
import java.util.logging.LogRecord;
import java.util.logging.Logger;

public class LoggerManager
{
    public static LoggerManager instance;
    private Calendar calendar;
    private Logger logger;

    public LoggerManager(Logger logger, Path logFile)
    {
        this.logger = logger;
        this.logger.addHandler(new LogHandler(logFile));
        instance = this;
    }

    public Logger getLogger()
    {
        return this.logger;
    }

    public String getDate()
    {
        return(calendar.get(Calendar.DAY_OF_MONTH) + "/" + calendar.get(Calendar.MONTH) + "/" + calendar.get(Calendar.YEAR) + "-" + calendar.get(Calendar.HOUR_OF_DAY) + ":" + calendar.get(Calendar.MINUTE) + ":" + calendar.get(Calendar.SECOND));
    }

    private class LogHandler extends Handler
    {
        private BufferedWriter writer = null;

        public LogHandler(Path logFile)
        {
            try
            {
                if(Files.exists(logFile))
                {
                    Files.delete(logFile);
                    Files.createFile(logFile);
                }
                else
                {
                    Files.createFile(logFile);
                }
                this.writer = Files.newBufferedWriter(logFile, StandardCharsets.UTF_8);
            }
            catch(Exception e)
            {
                System.out.println("[GRAVE] Erreur lors de la création/délétion du fichier log.");
            }
        }

        @Override
        public void publish(LogRecord record)
        {
            try
            {
                writer.write(record.getMessage() + "<" + getDate() + "> [" + record.getLevel().getLocalizedName() + "] " + record.getMessage() + "\n");
            }
            catch(Exception e)
            {
                System.err.println("[GRAVE] Erreur lors de l'écriture du fichier log.");
                e.printStackTrace();
            }
        }

        @Override
        public void flush()
        {

        }

        @Override
        public void close() throws SecurityException
        {
            System.out.println("<" + getDate() + "> [Infos] Fermeture des ressources...");
            try
            {
                writer.flush();
                writer.close();
            }
            catch(Exception e)
            {}
            System.out.println("<" + getDate() + "> [Infos] OK !");
        }
    }
}