Add Reset and GetFileID methods to Filer interface

configs.go

@@ -359,6 +359,16 @@ func (cfg WebhookCfg) Exist() bool {
 	return cfg.Certificate == nil
 }
 
+// Reset method sets new Certificate
+func (cfg *WebhookCfg) Reset(i InputFile) {
+	cfg.Certificate = i
+}
+
+// GetFileID for webhook is always empty
+func (cfg *WebhookCfg) GetFileID() string {
+	return ""
+}
+
 // AnswerCallbackCfg contains information on making a anserCallbackQuery response.
 type AnswerCallbackCfg struct {
 	CallbackQueryID string `json:"callback_query_id"`

configs_message.go

@@ -8,6 +8,15 @@ import (
 	"strconv"
 )
 
+// Assert interfaces
+var _ Filer = (*PhotoCfg)(nil)
+var _ Filer = (*AudioCfg)(nil)
+var _ Filer = (*VideoCfg)(nil)
+var _ Filer = (*VoiceCfg)(nil)
+var _ Filer = (*DocumentCfg)(nil)
+var _ Filer = (*StickerCfg)(nil)
+var _ Filer = (*WebhookCfg)(nil)
+
 // BaseMessage is a base type for all message config types.
 // Implements Messenger interface.
 type BaseMessage struct {
@@ -278,6 +287,11 @@ type BaseFile struct {
 	InputFile InputFile
 }
 
+// GetFileID returns fileID if it's exist
+func (b BaseFile) GetFileID() string {
+	return b.FileID
+}
+
 // Exist returns true if file exists on telegram servers
 func (b BaseFile) Exist() bool {
 	return b.FileID != ""
@@ -300,6 +314,12 @@ func (b BaseFile) Values() (url.Values, error) {
 	return v, nil
 }
 
+// Reset method removes FileID and sets new InputFile
+func (b *BaseFile) Reset(i InputFile) {
+	b.FileID = ""
+	b.InputFile = i
+}
+
 // PhotoCfg contains information about a SendPhoto request.
 // Use it to send information about a venue
 // Implements Filer and Messenger interfaces.

helpers.go

@@ -295,6 +295,7 @@ func CloneMessage(msg *Message, baseMessage *BaseMessage) Messenger {
 				BaseMessage: base,
 				FileID:      msg.Photo[len(msg.Photo)-1].FileID,
 			},
+			Caption: msg.Caption,
 		}
 	}
 	if msg.Location != nil {
@@ -315,6 +316,9 @@ func CloneMessage(msg *Message, baseMessage *BaseMessage) Messenger {
 				BaseMessage: base,
 				FileID:      msg.Audio.FileID,
 			},
+			Duration:  msg.Audio.Duration,
+			Performer: msg.Audio.Performer,
+			Title:     msg.Audio.Title,
 		}
 	}
 	if msg.Voice != nil {
@@ -323,6 +327,7 @@ func CloneMessage(msg *Message, baseMessage *BaseMessage) Messenger {
 				BaseMessage: base,
 				FileID:      msg.Voice.FileID,
 			},
+			Duration: msg.Voice.Duration,
 		}
 	}
 	if msg.Document != nil {

interfaces.go

@@ -32,6 +32,10 @@ type Filer interface {
 	File() InputFile
 	// Exist returns true if file exists on telegram servers
 	Exist() bool
+	// Reset removes FileID and sets new InputFile
+	Reset(InputFile)
+	// GetFileID returns fileID if it's exist
+	GetFileID() string
 }
 
 // ReplyMarkup describes interface for reply_markup keyboards.