package requests

import (
	"io"
	"log"
	"os"
	"path/filepath"
)

// UploadFile 上传文件的结构
type UploadFile struct {
	FileName         string
	FieldName        string
	FileReaderCloser io.ReadCloser
}

// UploadFileFromPath 从本地文件获取上传文件
func UploadFileFromPath(fileName string) (*UploadFile, error) {
	fd, err := os.Open(fileName)

	if err != nil {
		return nil, err
	}

	return &UploadFile{FileReaderCloser: fd, FileName: fileName}, nil

}

// UploadFileFromGlob 根据Glob从本地文件获取上传文件
func UploadFileFromGlob(glob string) ([]*UploadFile, error) {
	files, err := filepath.Glob(glob)

	if err != nil {
		return nil, err
	}

	if len(files) == 0 {
		log.Println("UploadFileFromGlob: len(files) == 0")
	}

	var ufiles []*UploadFile

	for _, f := range files {
		if s, err := os.Stat(f); err != nil || s.IsDir() {
			continue
		}

		fd, err := os.Open(f)
		if err != nil {
			log.Println(fd.Name(), err)
		} else {
			ufiles = append(ufiles, &UploadFile{FileReaderCloser: fd, FileName: filepath.Base(fd.Name())})
		}
	}

	return ufiles, nil

}