// Package helpers provides useful helper structures for KermaGo
package helpers

import (
	"fmt"
	"os"
	"time"
)

/*
A Logger is a helper used for logging messages to stdout and stderr
*/
type Logger struct{}

/*
Debug logs a debug message to stdout if the KERMA_DEBUG environment variable is set to true
*/
func (l *Logger) Debug(msg string) {
	if os.Getenv("KERMA_DEBUG") == "true" {
		t := time.Now()
		_, _ = fmt.Fprintln(os.Stdout, t.Format(time.RFC1123)+" [DEBUG] "+msg)
	}

}

/*
Info logs an info message to stdout
*/
func (l *Logger) Info(msg string) {
	t := time.Now()
	_, _ = fmt.Fprintln(os.Stdout, t.Format(time.RFC1123)+" [INFO] "+msg)
}

/*
Warn logs a warning message to stderr
*/
func (l *Logger) Warn(msg string) {
	t := time.Now()
	_, _ = fmt.Fprintln(os.Stderr, t.Format(time.RFC1123)+" [WARN] "+msg)
}

/*
Error logs an error message to stderr
*/
func (l *Logger) Error(msg string) {
	t := time.Now()
	_, _ = fmt.Fprintln(os.Stderr, t.Format(time.RFC1123)+" [ERROR] "+msg)
}

/*
Fatal logs a fatal message to stderr and terminates the application
*/
func (l *Logger) Fatal(msg string) {
	t := time.Now()
	_, _ = fmt.Fprintln(os.Stderr, t.Format(time.RFC1123)+" [FATAL] "+msg)
	os.Exit(1)
}