//
// adapter_local.go
// Copyright (C) 2022 tiglog <me@tiglog.com>
//
// Distributed under terms of the MIT license.
//

package storage

import (
	"fmt"
	"io"
	"mime/multipart"
	"os"
	"path/filepath"
	"time"
)

type LocalStorage struct {
	rootDir string
}

func NewLocalStorage(dir string) *LocalStorage {
	return &LocalStorage{rootDir: dir}
}

func (s *LocalStorage) GetName() string {
	return "local"
}

func (s *LocalStorage) Upload(upfile *multipart.FileHeader) (string, error) {
	now := time.Now()
	path := fmt.Sprintf("%d/%d/%d", now.Year(), now.Month(), now.Day())
	fp := filepath.Join(s.rootDir, path)
	if _, err := os.Stat(fp); err != nil {
		os.MkdirAll(fp, 0755)
	}
	outfp := filepath.Join(fp, upfile.Filename)
	fd, err := os.Create(outfp)
	if err != nil {
		return "", err
	}
	defer fd.Close()

	ifd, err := upfile.Open()
	if err != nil {
		return "", err
	}
	defer ifd.Close()

	io.Copy(fd, ifd)
	return filepath.Join(path, upfile.Filename), nil
}

func (s *LocalStorage) GetBaseDir() string {
	return s.rootDir
}

func (s *LocalStorage) GetFullPath(path string) string {
	return filepath.Join(s.GetBaseDir(), path)
}