package logger

import (
	"fmt"
	"runtime/debug"
	"strings"
	"time"
)

type Logger interface {
	Info(message string)
	Infof(format string, a ...any)
	Warning(message string)
	Critical(message string)
	Fatal(message string)
}

type ML struct {
}

func (m *ML) sendMsg(message string) {
	// Da die CSV Dateien RFC3339 nutzen, wechsel ich darauf im Log der
	// Konsistenz wegen.
	msg := "# " + time.Now().Format(time.RFC3339) + "\n* " + message
	fmt.Println(msg)
}

func (m *ML) sendMsgWithStack(message string) {
	msg := message
	stack := string(debug.Stack())
	msg += "\n\n### *** Stack ***\n\n\n >" + indentStacktrace(stack)
	msg += "\n________"
	m.sendMsg(msg)
}

func (m *ML) Info(message string) {
	m.sendMsgWithStack("Info: " + message)
}

func (m *ML) Infof(format string, a ...any) {
	msg := fmt.Sprintf(format, a)
	m.sendMsgWithStack("Info: " + msg)
}

func (m *ML) Warning(message string) {
	m.sendMsgWithStack("Warning: " + message)
}

func (m *ML) Critical(message string) {
	stack := string(debug.Stack())
	m.sendMsgWithStack("Critical: " + message + indentStacktrace(stack))
}

func (m *ML) Fatal(message string) {
	m.sendMsgWithStack("Fatal" + message)
	panic(message)
}
func indentStacktrace(stack string) string {
	lines := strings.Split(stack, "\n")
	for i := 1; i < len(lines); i++ {
		lines[i] = "    " + lines[i]
	}
	return strings.Join(lines, "\n")
}

func NewMarcoLogger() Logger {
	log := ML{}
	return &log
}