* use reqwest

* support multipart form
* fix audio apits

src/v1/error.rs

@@ -1,15 +1,26 @@
+use reqwest::{self};
 use std::error::Error;
 use std::fmt;
 
 #[derive(Debug)]
-pub struct APIError {
-    pub message: String,
+pub enum APIError {
+    ReqwestError(reqwest::Error),
+    CustomError { message: String },
 }
 
 impl fmt::Display for APIError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "APIError: {}", self.message)
+        match self {
+            APIError::ReqwestError(err) => write!(f, "ReqwestError: {}", err),
+            APIError::CustomError { message } => write!(f, "APIError: {}", message),
+        }
     }
 }
 
 impl Error for APIError {}
+
+impl From<reqwest::Error> for APIError {
+    fn from(err: reqwest::Error) -> APIError {
+        APIError::ReqwestError(err)
+    }
+}