package server

import (
	"errors"
	"io"
	"gitea.inhome.blapointe.com/local/notes-server/filetree"
	"net/http"
	"os"
	"path"
	"strings"
)

func (s *Server) attach(w http.ResponseWriter, r *http.Request) {
	if err := s._attach(w, r); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
	}
}

func (s *Server) _attach(w http.ResponseWriter, r *http.Request) error {
	r.ParseMultipartForm(100 << 20)
	file, handler, err := r.FormFile("file")
	if err != nil {
		return err
	}
	defer file.Close()

	ft := filetree.NewPathFromURL(r.URL.Path)
	local := ft.Local
	target := path.Join(path.Dir(local), "."+path.Base(local)+".attachments", handler.Filename)

	os.MkdirAll(path.Dir(target), os.ModePerm)
	if fi, err := os.Stat(target); err != nil && !os.IsNotExist(err) {
		return err
	} else if err == nil && fi.IsDir() {
		return errors.New("invalid path")
	}
	f, err := os.Create(target)
	if err != nil {
		return err
	}
	defer f.Close()
	if _, err := io.Copy(f, file); err != nil {
		return err
	}

	http.Redirect(w, r, "/notes"+strings.TrimPrefix(ft.HREF, "/attach"), http.StatusSeeOther)
	return nil
}