Merge branch 'dwnloadhelper_SSS' into 'master'

download helper

See merge request !34

downloadhelper/downloadHelper.go

@@ -31,6 +31,15 @@ func DownloadFile(sourcePath, destinationPath, jwtToken string, retryCnt int) (b
 	if strings.Trim(sourcePath, EMPTY_STR) == EMPTY_STR || strings.Trim(destinationPath, EMPTY_STR) == EMPTY_STR || !strings.HasPrefix(sourcePath, HTTP_PROTOCOL) {
 		return false, errors.New("Either Source/Destination url is empty or source url does not start with 'http'")
 	}
+	// dest directory must be a string. check for the same.
+	destInfo, infoError := filehelper.FileInfo(destinationPath)
+	if infoError != nil {
+		return false, errors.New("error occured while getting innformation of destination directory : " + destinationPath)
+	}
+
+	if destInfo.IsDir() {
+		return false, errors.New("destination path must be a file path, got directory : " + destinationPath)
+	}
 	client := grab.NewClient()
 	req, _ := grab.NewRequest(destinationPath, sourcePath)
 	if jwtToken != "NA" {