package utils

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"os"
)

func PrettyPrint(v interface{}) (err error) {
	b, err := json.MarshalIndent(v, "", "  ")
	if err == nil {
		fmt.Println(string(b))
	}
	return
}

func FileCopy(src string, dst string) error {
	from, err := os.Open(src)
	if err != nil {
		return err
	}
	defer from.Close()

	to, err := os.OpenFile(dst, os.O_RDWR|os.O_CREATE, 0666)
	if err != nil {
		return err
	}
	defer to.Close()

	_, err = io.Copy(to, from)
	if err != nil {
		return err
	}
	return nil
}

func StreamToString(stream io.Reader) (string, error) {
	buf := new(bytes.Buffer)
	if _, err := buf.ReadFrom(stream); err != nil {
		return "", err
	}
	return buf.String(), nil
}