fix: logic on naming url with secret

handlers.go

@@ -158,11 +158,11 @@ func (app *Application) formHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	defer file.Close()
 
-	filename := app.publicURL(file, ".txt")
-
+	full := true
 	if len(r.Form["secret"]) == 0 {
-		filename = filename[:8]
+		full = false
 	}
+	filename := app.publicURL(file, ".txt", full)
 
 	// reopening file because hash consumes it
 	file, err = os.Open("/tmp/file.txt")
@@ -198,11 +198,11 @@ func (app *Application) curlHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	defer file.Close()
 
-	filename := app.publicURL(file, filepath.Ext(handler.Filename))
-
+	full := true
 	if len(r.Form["secret"]) == 0 {
-		filename = filename[:8]
+		full = false
 	}
+	filename := app.publicURL(file, filepath.Ext(handler.Filename), full)
 
 	// reopen the file for copying, as the hash process consumed the file reader
 	file, _, err = r.FormFile("file")
@@ -219,7 +219,7 @@ func (app *Application) curlHandler(w http.ResponseWriter, r *http.Request) {
 	ResponseURLHandler(w, app.url, filename)
 }
 
-func (app *Application) publicURL(file io.Reader, extension string) string {
+func (app *Application) publicURL(file io.Reader, extension string, full bool) string {
 	filename, _ := HashFile(file, extension)
 
 	filepath := filepath.Join(app.filesDir, filename)

helpers.go

@@ -67,17 +67,19 @@ func FormatFileSize(size int64) string {
 	return fmt.Sprintf("%.2f GB", float64(size)/(1024*1024*1024))
 }
 
-func HashFile(file io.Reader, extension string) (string, error) {
+func HashFile(file io.Reader, extension string, full bool) (string, error) {
 	hasher := md5.New()
 	if _, err := io.Copy(hasher, file); err != nil {
 		return "", err
 	}
 
-	sha1Hash := hex.EncodeToString(hasher.Sum(nil))[:8]
-
+	sha1Hash := hex.EncodeToString(hasher.Sum(nil))
 	filename := fmt.Sprintf("%s%s", sha1Hash, extension)
-
-	return filename, nil
+	if full {
+		return filename, nil
+	} else {
+		return fmt.Sprintf("%s%s", sha1Hash[:8], extension), nil
+	}
 }
 
 func SaveFile(name string, file io.Reader) error {