2017-11-22 10:29:45 +00:00
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package telegram
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2017-12-13 14:02:07 +00:00
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import (
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"bytes"
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"errors"
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"fmt"
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"io"
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"mime/multipart"
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"net/url"
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2018-02-14 21:53:40 +00:00
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"os"
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2017-12-13 14:02:07 +00:00
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log "github.com/kirillDanshin/dlog"
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json "github.com/pquerna/ffjson/ffjson"
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http "github.com/valyala/fasthttp"
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)
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2018-04-19 13:02:15 +00:00
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// ErrBadFileType describes error of the unsupported file data type for uploading
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2017-12-13 14:02:07 +00:00
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var ErrBadFileType = errors.New("bad file type")
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2018-02-15 23:28:49 +00:00
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/*
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2018-04-12 11:59:07 +00:00
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Upload is a helper method which provide are three ways to send files (photos, stickers, audio,
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2018-02-15 23:28:49 +00:00
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media, etc.):
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1. If the file is already stored somewhere on the Telegram servers, you don't need to reupload it:
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each file object has a file_id field, simply pass this file_id as a parameter instead of uploading.
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There are no limits for files sent this way.
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2018-04-19 13:02:15 +00:00
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2018-02-15 23:28:49 +00:00
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2. Provide Telegram with an *url.URL for the file to be sent. Telegram will download and send the
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file. 5 MB max size for photos and 20 MB max for other types of content.
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2018-04-19 13:02:15 +00:00
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2018-02-15 23:28:49 +00:00
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3. Post the file using multipart/form-data in the usual way that files are uploaded via the
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browser. Use []byte or io.Reader for this. 10 MB max size for photos, 50 MB for other files.
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2018-04-19 13:28:26 +00:00
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Sending by FileID
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2018-02-15 23:28:49 +00:00
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2018-04-19 13:28:26 +00:00
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* It is not possible to change the file type when resending by file_id. I.e. a video can't be sent
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2018-02-15 23:28:49 +00:00
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as a photo, a photo can't be sent as a document, etc.
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2018-04-19 13:28:26 +00:00
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* It is not possible to resend thumbnails.
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* Resending a photo by file_id will send all of its sizes.
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* file_id is unique for each individual bot and can't be transferred from one bot to another.
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2018-02-15 23:28:49 +00:00
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Sending by URL
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2018-04-19 13:28:26 +00:00
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* When sending by *url.URL the target file must have the correct MIME type (e.g., audio/mpeg for
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2018-02-15 23:28:49 +00:00
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sendAudio, etc.).
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2018-04-19 13:28:26 +00:00
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* In sendDocument, sending by URL will currently only work for gif, pdf and zip files.
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* To use SendVoice, the file must have the type audio/ogg and be no more than 1MB in size. 1–20MB
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2018-02-15 23:28:49 +00:00
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voice notes will be sent as files.
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2018-04-19 13:28:26 +00:00
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* Other configurations may work but we can't guarantee that they will.
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2018-02-15 23:28:49 +00:00
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*/
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2018-04-12 13:49:05 +00:00
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func (bot *Bot) Upload(method, key, name string, file InputFile, args fmt.Stringer) (*Response, error) {
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2017-12-13 14:02:07 +00:00
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buffer := bytes.NewBuffer(nil)
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multi := multipart.NewWriter(buffer)
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2018-04-19 10:56:25 +00:00
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requestURI := defaultURI
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requestURI.Path = fmt.Sprint("/bot", bot.AccessToken, "/", method)
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2017-12-13 14:02:07 +00:00
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query, err := url.ParseQuery(args.String())
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if err != nil {
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return nil, err
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}
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for key, val := range query {
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2018-02-15 23:28:49 +00:00
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if err = multi.WriteField(key, val[0]); err != nil {
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2017-12-13 14:02:07 +00:00
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return nil, err
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}
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}
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2018-04-19 10:56:25 +00:00
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if err = createFileField(multi, file, key, name); err != nil {
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2018-04-12 11:59:07 +00:00
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return nil, err
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}
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2017-12-19 20:38:08 +00:00
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2018-02-15 23:28:49 +00:00
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if err = multi.Close(); err != nil {
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2017-12-13 14:02:07 +00:00
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return nil, err
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}
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req := http.AcquireRequest()
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defer http.ReleaseRequest(req)
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req.SetBody(buffer.Bytes())
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req.Header.SetContentType(multi.FormDataContentType())
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req.Header.SetMethod("POST")
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req.Header.SetRequestURI(requestURI.String())
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2018-04-19 10:56:25 +00:00
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req.Header.SetUserAgent(fmt.Sprint("telegram/", Version))
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req.Header.SetHost(requestURI.Hostname())
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2017-12-13 14:02:07 +00:00
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log.Ln("Request:")
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2017-12-22 15:37:32 +00:00
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log.D(req)
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2017-12-13 14:02:07 +00:00
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resp := http.AcquireResponse()
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defer http.ReleaseResponse(resp)
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2018-04-19 10:56:25 +00:00
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err = http.Do(req, resp)
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2017-12-13 14:02:07 +00:00
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log.Ln("Resp:")
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2017-12-22 15:37:32 +00:00
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log.D(resp)
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2018-04-19 10:56:25 +00:00
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if err != nil {
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return nil, err
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}
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2017-12-13 14:02:07 +00:00
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var data Response
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2018-02-15 23:28:49 +00:00
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if err = json.Unmarshal(resp.Body(), &data); err != nil {
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2017-12-13 14:02:07 +00:00
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return nil, err
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}
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if !data.Ok {
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return nil, errors.New(data.Description)
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}
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return &data, nil
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}
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2018-04-12 11:59:07 +00:00
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2018-04-19 10:56:25 +00:00
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func createFileField(w *multipart.Writer, file interface{}, key, val string) error {
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var err error
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switch src := file.(type) {
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case string: // Send FileID of file on disk path
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err = createFileFieldString(w, key, src)
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case *url.URL: // Send by URL
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err = w.WriteField(key, src.String())
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case []byte: // Upload new
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err = createFileFieldRaw(w, key, val, bytes.NewReader(src))
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case io.Reader: // Upload new
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err = createFileFieldRaw(w, key, val, src)
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default:
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return ErrBadFileType
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}
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return err
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}
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func createFileFieldString(w *multipart.Writer, key, src string) error {
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2018-04-12 11:59:07 +00:00
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_, err := os.Stat(src)
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2018-04-19 10:56:25 +00:00
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2018-04-12 11:59:07 +00:00
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switch {
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case os.IsNotExist(err):
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2018-04-19 10:56:25 +00:00
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err = w.WriteField(key, src)
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2018-04-12 11:59:07 +00:00
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case os.IsExist(err):
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err = uploadFromDisk(w, key, src)
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}
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2018-04-19 10:56:25 +00:00
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return err
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2018-04-12 11:59:07 +00:00
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}
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func uploadFromDisk(w *multipart.Writer, key, src string) error {
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file, err := os.Open(src)
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if err != nil {
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return err
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}
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2018-04-12 13:49:05 +00:00
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defer func() {
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_ = file.Close()
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}()
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2018-04-12 11:59:07 +00:00
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var formFile io.Writer
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formFile, err = w.CreateFormFile(key, file.Name())
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if err != nil {
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return err
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}
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_, err = io.Copy(formFile, file)
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return err
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}
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2018-04-19 10:56:25 +00:00
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func createFileFieldRaw(w *multipart.Writer, key, value string, src io.Reader) error {
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2018-04-12 11:59:07 +00:00
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field, err := w.CreateFormFile(key, value)
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if err != nil {
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return err
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}
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_, err = io.Copy(field, src)
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return err
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}
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