package utils

import (
	"errors"
	"fmt"
	"runtime"
	"strconv"
	"strings"
)

type WrapErrors struct {
	message string
	trace   []string
}

func (e *WrapErrors) Error() string {
	return e.message
}

func (e *WrapErrors) StackTrace() string {
	if e.trace == nil {
		return ""
	}
	return strings.Join(e.trace, "\n")
}

func ErrorsWrap(err error, message ...string) error {
	var e *WrapErrors
	if !errors.As(err, &e) {
		e = &WrapErrors{}
	}
	if len(message) > 0 {
		e.message = fmt.Sprintf("%v: %v", message[0], err.Error())
	} else {
		e.message = err.Error()
	}
	e.trace = append(e.trace, getErrorPath())
	return e
}

func ErrorsWrapF(err error, message string, a ...any) error {
	var e *WrapErrors
	if !errors.As(err, &e) {
		e = &WrapErrors{}
	}
	e.message = fmt.Sprintf("%v: %v", fmt.Sprintf(message, a...), err.Error())
	e.trace = append(e.trace, getErrorPath())
	return e
}

func getErrorPath() string {
	_, file, line, _ := runtime.Caller(2)
	if file == "" {
		return "unknown"
	}
	return file + ":" + strconv.Itoa(line)
}