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package log
import (
"fmt"
"io"
"os"
"sync"
"time"
)
type Logger struct {
name string
Level
writer io.Writer
mu sync.Mutex
color bool
}
func NewLogger(name string, writer io.Writer, ansi bool) *Logger {
color := ansi && (writer == os.Stdout || writer == os.Stderr)
return &Logger{name, LevelInfo, writer, sync.Mutex{}, color}
}
func (l *Logger) Log(level Level, message string, a ...any) error {
if l.Level > level {
return nil
}
timestamp := time.Now().Format(time.TimeOnly)
severity := level.String()
formattedMessage := fmt.Sprintf(message, a...)
// TODO: add support for ANSI coloring
l.mu.Lock()
_, err := fmt.Fprintf(l.writer, "[%s] [%s/%s]: %s\n", timestamp, l.name, severity, formattedMessage)
l.mu.Unlock()
return err
}
func (l *Logger) Debug(message string, a ...any) error {
return l.Log(LevelDebug, message, a...)
}
func (l *Logger) Info(message string, a ...any) error {
return l.Log(LevelInfo, message, a...)
}
func (l *Logger) Warn(message string, a ...any) error {
return l.Log(LevelWarn, message, a...)
}
func (l *Logger) Error(message string, a ...any) error {
return l.Log(LevelError, message, a...)
}
func (l *Logger) Fatal(message string, a ...any) error {
err := l.Log(LevelError, message, a...)
if err != nil {
return err
}
os.Exit(1)
return nil
}
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