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package main
import (
"fmt"
"log"
)
type LevelEnum uint8
const (
None LevelEnum = iota
Error
Warn
Info
Debug
)
type levelInfo struct {
abbrev string
color string
}
var (
levelInfos = map[LevelEnum]levelInfo{
Error: {"ERR", ansiRed},
Warn: {"WARN", ansiYellow},
Info: {"INFO", ansiCyan},
Debug: {"DEBUG", ansiGreen},
}
)
func (s LevelEnum) Info() levelInfo {
info, ok := levelInfos[s]
if !ok {
return levelInfo{"UNK", ansiWhite}
}
return info
}
func (s LevelEnum) Format() string {
info := s.Info()
return colorize("["+info.abbrev+"]", info.color)
}
type Logger struct {
Level LevelEnum
ns string
}
func NewLogger(level LevelEnum) *Logger {
return &Logger{
Level: level,
}
}
func (l *Logger) WithNS(ns string) *Logger {
return &Logger{
Level: l.Level,
ns: formatNS(ns),
}
}
func (l *Logger) Logf(level LevelEnum, format string, args ...any) {
if level > l.Level {
return
}
log.Printf("%s%s %s", l.ns, level.Format(), fmt.Sprintf(format, args...))
}
func (l *Logger) Errorf(format string, args ...any) { l.Logf(Error, format, args...) }
func (l *Logger) Warnf(format string, args ...any) { l.Logf(Warn, format, args...) }
func (l *Logger) Infof(format string, args ...any) { l.Logf(Info, format, args...) }
func (l *Logger) Debugf(format string, args ...any) { l.Logf(Debug, format, args...) }
func formatNS(ns string) string {
return colorize("["+ns+"]", ansiPurple)
}
var ansiReset = "\033[0m"
var ansiRed = "\033[31m"
var ansiGreen = "\033[32m"
var ansiYellow = "\033[33m"
var ansiBlue = "\033[34m"
var ansiPurple = "\033[35m"
var ansiCyan = "\033[36m"
var ansiGray = "\033[37m"
var ansiWhite = "\033[97m"
func colorize(s string, color string) string {
return color + s + ansiReset
}
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