add stream_upload_source (#786)

Co-authored-by: _oah <57302072@qq.com>

work/material/media.go

@@ -2,6 +2,7 @@ package material
 
 import (
 	"fmt"
+	"io"
 
 	"github.com/silenceper/wechat/v2/util"
 )
@@ -96,3 +97,54 @@ func (r *Client) UploadAttachment(filename string, mediaType string, attachmentT
 	err = util.DecodeWithError(response, result, "UploadAttachment")
 	return result, err
 }
+
+// UploadTempFileFromReader 上传临时素材
+// @see https://developer.work.weixin.qq.com/document/path/90253
+// @mediaType 媒体文件类型，分别有图片（image）、语音（voice）、视频（video），普通文件（file）
+func (r *Client) UploadTempFileFromReader(filename, mediaType string, reader io.Reader) (*UploadTempFileResponse, error) {
+	var (
+		accessToken string
+		err         error
+	)
+	if accessToken, err = r.GetAccessToken(); err != nil {
+		return nil, err
+	}
+	var byteData []byte
+	byteData, err = io.ReadAll(reader)
+	if err != nil {
+		return nil, err
+	}
+	var response []byte
+	if response, err = util.PostFileByStream("media", filename, fmt.Sprintf(uploadTempFile, accessToken, mediaType), byteData); err != nil {
+		return nil, err
+	}
+	result := &UploadTempFileResponse{}
+	err = util.DecodeWithError(response, result, "UploadTempFile")
+	return result, err
+}
+
+// UploadAttachmentFromReader 上传附件资源
+// @see https://developer.work.weixin.qq.com/document/path/95098
+// @mediaType 媒体文件类型，分别有图片（image）、视频（video）、普通文件（file）
+// @attachment_type 附件类型，不同的附件类型用于不同的场景。1：朋友圈；2:商品图册
+func (r *Client) UploadAttachmentFromReader(filename, mediaType string, reader io.Reader, attachmentType int) (*UploadAttachmentResponse, error) {
+	var (
+		accessToken string
+		err         error
+	)
+	if accessToken, err = r.GetAccessToken(); err != nil {
+		return nil, err
+	}
+	var byteData []byte
+	byteData, err = io.ReadAll(reader)
+	if err != nil {
+		return nil, err
+	}
+	var response []byte
+	if response, err = util.PostFileByStream("media", filename, fmt.Sprintf(uploadAttachment, accessToken, mediaType, attachmentType), byteData); err != nil {
+		return nil, err
+	}
+	result := &UploadAttachmentResponse{}
+	err = util.DecodeWithError(response, result, "UploadAttachment")
+	return result, err
+}