Files
EMLy/logger.go

82 lines
1.8 KiB
Go

package main
import (
"fmt"
"io"
"log"
"os"
"path/filepath"
"runtime"
"strings"
"time"
)
var (
logger = log.New(os.Stdout, "", 0)
logFile *os.File
)
// InitLogger initializes the logger to write to both stdout and a file in AppData
func InitLogger() error {
configDir, err := os.UserConfigDir()
if err != nil {
return err
}
appDir := filepath.Join(configDir, "EMLy")
logsDir := filepath.Join(appDir, "logs")
if err := os.MkdirAll(logsDir, 0755); err != nil {
return err
}
logPath := filepath.Join(logsDir, "app.log")
// Open file in Append mode
file, err := os.OpenFile(logPath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
return err
}
logFile = file
// MultiWriter to write to both stdout and file
multi := io.MultiWriter(os.Stdout, file)
logger = log.New(multi, "", 0)
Log("Logger initialized. Writing to: " + logPath)
return nil
}
// CloseLogger closes the log file
func CloseLogger() {
if logFile != nil {
logFile.Close()
}
}
// Log prints a timestamped, file:line tagged log line.
func Log(args ...any) {
now := time.Now()
date := now.Format("2006-01-02")
tm := now.Format("15:04:05")
_, file, line, ok := runtime.Caller(1)
loc := "unknown"
if ok {
loc = fmt.Sprintf("%s:%d", filepath.Base(file), line)
}
msg := fmt.Sprintln(args...)
logger.Printf("[%s] - [%s] - [%s] - %s", date, tm, loc, strings.TrimRight(msg, "\n"))
}
// FrontendLog allows the frontend to send logs to the backend logger
func (a *App) FrontendLog(level string, message string) {
now := time.Now()
date := now.Format("2006-01-02")
tm := now.Format("15:04:05")
// We don't use runtime.Caller here because it would point to this function
// Instead we tag it as [FRONTEND]
logger.Printf("[%s] - [%s] - [FRONTEND] - [%s] %s", date, tm, level, message)
}