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request.go
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request.go
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package tg
import (
"encoding/json"
"fmt"
"strconv"
)
// Request is Telegram Bot API request structure.
type Request struct {
Method string
json map[string]any
args map[string]string
files map[string]InputFile
attachmentIdx int
}
func NewRequest(method string) *Request {
return &Request{
Method: method,
json: make(map[string]any),
args: make(map[string]string),
files: make(map[string]InputFile),
}
}
func (r *Request) JSON(name string, v any) *Request {
r.json[name] = v
return r
}
func (r *Request) InputFile(name string, file InputFile) *Request {
r.files[name] = file
return r
}
func (r *Request) PeerID(name string, v PeerID) *Request {
return r.String(name, v.PeerID())
}
func (r *Request) UserID(name string, v UserID) *Request {
return r.PeerID(name, v)
}
func (r *Request) String(name, value string) *Request {
r.args[name] = value
return r
}
func (r *Request) Bool(name string, value bool) *Request {
return r.String(name, strconv.FormatBool(value))
}
func (r *Request) Int(name string, value int) *Request {
return r.String(name, strconv.Itoa(value))
}
func (r *Request) Int64(name string, value int64) *Request {
return r.String(name, strconv.FormatInt(value, 10))
}
func (r *Request) Float64(name string, value float64) *Request {
return r.String(name, strconv.FormatFloat(value, 'f', -1, 64))
}
func (r *Request) ChatID(name string, v ChatID) *Request {
return r.Int64(name, int64(v))
}
func (r *Request) File(name string, arg FileArg) *Request {
if arg.FileID != "" {
return r.String(name, string(arg.FileID))
} else {
return r.InputFile(name, arg.Upload)
}
}
func (r *Request) InputMediaSlice(name string, im []InputMedia) *Request {
for _, v := range im {
r.InputMedia(v)
}
r.JSON(name, im)
return r
}
func (r *Request) InputMedia(im InputMedia) *Request {
media, thumb := im.getMedia()
id := fmt.Sprintf("attachment_%d", r.attachmentIdx)
addr := fmt.Sprintf("attach://%s", id)
if media.getString() == "" {
r.InputFile(id, media.Upload)
media.addr = addr
r.attachmentIdx++
}
if thumb != nil {
thumbID := id + "_thumb"
r.InputFile(thumbID, *thumb)
thumb.addr = fmt.Sprintf("attach://%s", thumbID)
}
return r
}
func (r *Request) Stringer(name string, v fmt.Stringer) *Request {
return r.String(name, v.String())
}
// Encode request using encoder.
func (r *Request) Encode(encoder Encoder) error {
for k, jn := range r.json {
v, err := json.Marshal(jn)
if err != nil {
return fmt.Errorf("failed to marshal %s: %w", k, err)
}
r.args[k] = string(v)
}
// add files
for k, v := range r.files {
if err := encoder.WriteFile(k, v); err != nil {
return err
}
}
// add arguments
for k, v := range r.args {
if err := encoder.WriteString(k, v); err != nil {
return err
}
}
return nil
}