143 lines
2.9 KiB
Go
143 lines
2.9 KiB
Go
// Version of the bot API: 3.5 (November 17, 2017)
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package telegram
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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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"os"
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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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const (
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APIEndpoint = "https://api.telegram.org/bot%s/%s"
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FileEndpoind = "https://api.telegram.org/file/bot%s/%s"
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)
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var ErrBadFileType = errors.New("bad file type")
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func (bot *Bot) request(
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dst []byte,
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method string,
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args *http.Args,
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) (*Response, error) {
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requestURI := &url.URL{
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Scheme: "https",
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Host: "api.telegram.org",
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Path: fmt.Sprint("/bot", bot.AccessToken, "/", method),
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}
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if args != nil {
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requestURI.RawQuery = args.String()
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}
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req := http.AcquireRequest()
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defer http.ReleaseRequest(req)
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req.Header.SetMethod("POST")
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req.Header.SetContentType("application/json; charset=utf-8")
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req.Header.SetRequestURI(requestURI.String())
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req.SetBody(dst)
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resp := http.AcquireResponse()
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defer http.ReleaseResponse(resp)
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if err := http.Do(req, resp); err != nil {
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return nil, err
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}
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var data Response
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if err := json.Unmarshal(resp.Body(), &data); err != nil {
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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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func (bot *Bot) upload(
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file InputFile,
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fieldName, fileName, method string,
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args *http.Args,
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) (*Response, error) {
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var buffer bytes.Buffer
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multi := multipart.NewWriter(&buffer)
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defer multi.Close()
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switch source := file.(type) {
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case string:
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f, err := os.Open(source)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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formFile, err := multi.CreateFormFile(fieldName, f.Name())
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if err != nil {
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return nil, err
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}
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if _, err = io.Copy(formFile, f); err != nil {
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return nil, err
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}
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case []byte:
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formFile, err := multi.CreateFormFile(fieldName, fileName)
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if err != nil {
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return nil, err
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}
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if _, err = io.Copy(formFile, bytes.NewReader(source)); err != nil {
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return nil, err
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}
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case *url.URL:
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if err := multi.WriteField(fieldName, source.String()); err != nil {
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return nil, err
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}
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case io.Reader:
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multi.CreateFormFile(fieldName, fileName)
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default:
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return nil, ErrBadFileType
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}
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requestURI := &url.URL{
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Scheme: "https",
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Host: "api.telegram.org",
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Path: fmt.Sprint("/file/bot", bot.AccessToken, "/", method),
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}
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if args != nil {
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requestURI.RawQuery = args.String()
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}
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req := http.AcquireRequest()
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req.Header.SetMethod("POST")
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req.Header.SetContentType("multipart/form-data; charset=utf-8")
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req.Header.SetMultipartFormBoundary(multi.Boundary())
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req.Header.SetRequestURI(requestURI.String())
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req.SetBody(buffer.Bytes())
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resp := http.AcquireResponse()
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if err := http.Do(req, resp); err != nil {
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return nil, err
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}
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var data Response
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if err := json.Unmarshal(resp.Body(), &data); err != nil {
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return nil, err
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}
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log.Ln("Raw response:")
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log.D(data)
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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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