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sendable.go
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sendable.go
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package telegram
import (
"encoding/json"
"strconv"
"github.com/jfk9w-go/flu/httpf"
"github.com/jfk9w-go/flu"
)
type sendable interface {
kind() string
body(*httpf.Form) (flu.EncoderTo, error)
}
type Sendable interface {
sendable
self() Sendable
}
type Text struct {
Text string `url:"text"`
ParseMode ParseMode `url:"parse_mode,omitempty"`
DisableWebPagePreview bool `url:"disable_web_page_preview,omitempty"`
}
func (t Text) kind() string {
return "message"
}
func (t Text) body(form *httpf.Form) (flu.EncoderTo, error) {
return form, nil
}
func (t Text) self() Sendable {
return t
}
type MediaType string
const (
Photo MediaType = "photo"
Animation MediaType = "animation"
Video MediaType = "video"
Document MediaType = "document"
Audio MediaType = "audio"
Sticker MediaType = "sticker"
Voice MediaType = "voice"
)
func (mt MediaType) RemoteMaxSize() int64 {
if mt == Photo {
return 5 << 20
} else {
return 20 << 20
}
}
func (mt MediaType) AttachMaxSize() int64 {
if mt == Photo {
return 10 << 20
} else {
return 50 << 20
}
}
var (
DefaultMediaType = Document
MIMEType2MediaType = map[string]MediaType{
"image/jpeg": Photo,
"image/png": Photo,
"image/bmp": Photo,
"image/gif": Animation,
"video/mp4": Video,
"application/pdf": Document,
"application/octet-stream": Document,
"audio/mpeg": Audio,
"audio/ogg": Voice,
"image/webp": Sticker,
}
)
func MediaTypeByMIMEType(mimeType string) MediaType {
if mediaType, ok := MIMEType2MediaType[mimeType]; ok {
return mediaType
} else {
return DefaultMediaType
}
}
type Media struct {
Type MediaType `url:"-" json:"type"`
Input flu.Input `url:"-" json:"-"`
Filename string `url:"-" json:"-"`
Caption string `url:"caption,omitempty" json:"caption,omitempty"`
ParseMode ParseMode `url:"parse_mode,omitempty" json:"parse_mode,omitempty"`
}
func (m Media) filename() string {
if m.Filename != "" {
return m.Filename
}
var suffix string
switch m.Type {
case Animation:
suffix = ".gif"
case Video:
suffix = ".mp4"
case Audio:
suffix = ".mp3"
}
return string(m.Type) + suffix
}
func (m Media) kind() string {
return string(m.Type)
}
func (m Media) body(form *httpf.Form) (flu.EncoderTo, error) {
switch r := m.Input.(type) {
case flu.URL:
return form.Set(string(m.Type), r.String()), nil
default:
return form.Multipart().File(string(m.Type), m.filename(), m.Input), nil
}
}
func (m Media) self() Sendable {
return m
}
type mediaJSON struct {
Media
MediaURL string `json:"media"`
}
type MediaGroup []Media
func (mg MediaGroup) kind() string {
return "mediaGroup"
}
func (mg MediaGroup) body(form *httpf.Form) (flu.EncoderTo, error) {
var multipart *httpf.MultipartForm
multiparted := false
media := make([]mediaJSON, len(mg))
for i, m := range mg {
m := mediaJSON{m, ""}
switch r := m.Input.(type) {
case flu.URL:
m.MediaURL = r.String()
default:
if !multiparted {
multipart = form.Multipart()
multiparted = true
}
id := "media" + strconv.Itoa(i)
multipart = multipart.File(id, m.filename(), m.Input)
m.MediaURL = "attach://" + id
}
media[i] = m
}
bytes, err := json.Marshal(media)
if err != nil {
return nil, err
}
form = form.Set("media", string(bytes))
if multiparted {
return multipart, nil
}
return form, nil
}