// utils
package main

import (
	"fmt"
	"io"
	"io/ioutil"
	"os"
	"os/user"
	"path"
)

type Hfile struct {
	name   string
	dir    string
	path   string
	handle *os.File
}

type Tmpfile struct {
	path   string
	dir    string
	name   string
	handle *os.File
}

func (f *Hfile) init() {
	u, err := user.Current()
	if err != nil {
		fmt.Println("Panicking!")
		panic(fmt.Sprintf("%v", err))
	}
	f.dir = u.HomeDir
	f.path = path.Join(f.dir, f.name)
}

func (f *Tmpfile) init() {
	tmpdir, err := ioutil.TempDir(os.TempDir(), f.name)
	if err != nil {
		fmt.Println("Panicking!")
		panic(fmt.Sprintf("%v", err))
	}
	f.dir = tmpdir
	f.path = path.Join(f.dir, f.name)
}

func (h *Hfile) Open() {
	fh, err := os.Open(h.path)
	if err != nil {
		fmt.Print(err)
	}
	h.handle = fh
}

func (h *Tmpfile) Open() {
	fh, err := os.OpenFile(h.path, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0600)
	if err != nil {
		fmt.Print(err)
	}
	h.handle = fh
}

func CopyFile(src, dst string) (int64, error) {
	sf, err := os.Open(src)
	if err != nil {
		return 0, err
	}
	defer sf.Close()
	df, err := os.Create(dst)
	if err != nil {
		return 0, err
	}
	df.Chmod(0600)
	defer df.Close()
	return io.Copy(df, sf)
}