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FileManager.go
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/
FileManager.go
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package main
import (
"crypto/md5"
"errors"
"fmt"
"github.com/gin-gonic/gin"
"io"
"log"
"mime/multipart"
"net/http"
"os"
"path/filepath"
"strings"
"time"
)
func MD5(name string) string {
name = name + time.Now().String()
return fmt.Sprintf("%x", md5.Sum([]byte(name)))
}
func MkdirIfNotExist() error {
if _, err := os.Stat(GlobalConfig.ImageDir); os.IsNotExist(err) {
err := os.Mkdir(GlobalConfig.ImageDir, 0755)
if err != nil {
return err
}
}
return nil
}
func StoreImage(file *multipart.FileHeader) (string, error) {
filename := file.Filename
err := MkdirIfNotExist()
if err != nil {
return "", err
}
if !ValidImageFormat(filepath.Ext(filename)) {
return "", errors.New("file is not a image type")
}
md5FileName := MD5(filename)
storeName := GlobalConfig.ImageDir + md5FileName + filepath.Ext(filename)
out, err := os.Create(storeName)
defer out.Close()
if err != nil {
return "", err
}
incoming, _ := file.Open()
_, err = io.Copy(out, incoming)
if err != nil {
return "", err
}
return md5FileName + filepath.Ext(filename), nil
}
func ImageUploadHandler(c *gin.Context) {
file, err := c.FormFile("image")
if err != nil {
ResponseError(c, err)
return
}
name, err := StoreImage(file)
if err != nil {
ResponseError(c, err)
return
}
c.JSON(200, gin.H{
"message": "successful upload image",
"url": GlobalConfig.URL + "/image/" + name,
})
}
func ValidImageFormat(ext string) bool {
fmt.Println(strings.ToLower(ext))
switch strings.ToLower(ext) {
case ".jpg":
return true
case ".jpeg":
return true
case ".gif":
return true
case ".png":
return true
default:
return false
}
}
func MultiImageUploadHandler(c *gin.Context) {
form, err := c.MultipartForm()
if err != nil {
ResponseError(c, err)
}
files := form.File["upload[]"]
for _, file := range files {
log.Println(file.Filename)
// Upload the file to specific dst.
// c.SaveUploadedFile(file, dst)
}
c.String(http.StatusOK, fmt.Sprintf("%d files uploaded!", len(files)))
}