package main

import (
	"fmt"
	"os"
	"path/filepath"
	"time"
)

var logFile *os.File

func initLogger() {
	dir := filepath.Join(exeDir(), "log")
	os.MkdirAll(dir, 0755)

	// Nettoyage logs > 30 jours
	entries, _ := os.ReadDir(dir)
	cutoff := time.Now().AddDate(0, 0, -30)
	for _, e := range entries {
		if !e.IsDir() {
			if info, err := e.Info(); err == nil && info.ModTime().Before(cutoff) {
				os.Remove(filepath.Join(dir, e.Name()))
			}
		}
	}

	logPath := filepath.Join(dir, time.Now().Format("2006-01-02")+".log")
	f, err := os.OpenFile(logPath, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
	if err != nil {
		return
	}
	logFile = f
}

func logMsg(level, msg string) {
	line := fmt.Sprintf("[%s] %-5s %s\n", time.Now().Format("15:04:05"), level, msg)
	if logFile != nil {
		logFile.WriteString(line)
	}
}

func logInfo(msg string)  { logMsg("INFO", msg) }
func logWarn(msg string)  { logMsg("WARN", msg) }
func logError(msg string) { logMsg("ERROR", msg) }