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upload.go
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upload.go
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package media
import (
"encoding/json"
"io"
"os"
"path/filepath"
"github.com/bububa/wechat/work/core"
)
const (
MediaTypeImage = "image"
MediaTypeVoice = "voice"
MediaTypeVideo = "video"
MediaTypeFile = "file"
)
type MediaInfo struct {
MediaType string `json:"type"` // 媒体文件类型,分别有图片(image)、语音(voice)、视频(video),普通文件(file)
MediaId string `json:"media_id"` // 媒体文件上传后,获取时的唯一标识
CreatedAt json.Number `json:"created_at"` // 媒体文件上传时间戳
}
// UploadImage 上传多媒体图片
func UploadImage(clt *core.Client, filepath string) (info *MediaInfo, err error) {
return upload(clt, MediaTypeImage, filepath)
}
// UploadImageFromReader 上传多媒体图片
//
// NOTE: 参数 filename 不是文件路径, 是 multipart/form-data 里面 filename 的值.
func UploadImageFromReader(clt *core.Client, filename string, reader io.Reader) (info *MediaInfo, err error) {
return uploadFromReader(clt, MediaTypeImage, filename, reader)
}
// UploadVoice 上传多媒体语音
func UploadVoice(clt *core.Client, filepath string) (info *MediaInfo, err error) {
return upload(clt, MediaTypeVoice, filepath)
}
// UploadVoiceFromReader 上传多媒体语音
//
// NOTE: 参数 filename 不是文件路径, 是 multipart/form-data 里面 filename 的值.
func UploadVoiceFromReader(clt *core.Client, filename string, reader io.Reader) (info *MediaInfo, err error) {
return uploadFromReader(clt, MediaTypeVoice, filename, reader)
}
// UploadVideo 上传多媒体视频
func UploadVideo(clt *core.Client, filepath string) (info *MediaInfo, err error) {
return upload(clt, MediaTypeVideo, filepath)
}
// UploadVideoFromReader 上传多媒体视频
//
// NOTE: 参数 filename 不是文件路径, 是 multipart/form-data 里面 filename 的值.
func UploadVideoFromReader(clt *core.Client, filename string, reader io.Reader) (info *MediaInfo, err error) {
return uploadFromReader(clt, MediaTypeVideo, filename, reader)
}
// UploadFile 上传普通文件
func UploadFile(clt *core.Client, filepath string) (info *MediaInfo, err error) {
return upload(clt, MediaTypeFile, filepath)
}
// UploadFileFromReader 上传普通文件
//
// NOTE: 参数 filename 不是文件路径, 是 multipart/form-data 里面 filename 的值.
func UploadFileFromReader(clt *core.Client, filename string, reader io.Reader) (info *MediaInfo, err error) {
return uploadFromReader(clt, MediaTypeFile, filename, reader)
}
// =====================================================================================================================
func upload(clt *core.Client, mediaType, _filepath string) (info *MediaInfo, err error) {
file, err := os.Open(_filepath)
if err != nil {
return
}
defer file.Close()
return uploadFromReader(clt, mediaType, filepath.Base(_filepath), file)
}
func uploadFromReader(clt *core.Client, mediaType, filename string, reader io.Reader) (info *MediaInfo, err error) {
var incompleteURL = "https://qyapi.weixin.qq.com/cgi-bin/media/upload?type=" + mediaType + "&access_token="
var fields = []core.MultipartFormField{
{
IsFile: true,
Name: "media",
FileName: filename,
Value: reader,
},
}
var result struct {
core.Error
MediaInfo
}
if err = clt.PostMultipartForm(incompleteURL, fields, &result); err != nil {
return
}
if result.ErrCode != core.ErrCodeOK {
err = &result.Error
return
}
info = &result.MediaInfo
return
}