From 77f9c9f74e9cb2b8e73ac3b51b7b17541884489e Mon Sep 17 00:00:00 2001
From: Bohdan Horbeshko <bodqhrohro@gmail.com>
Date: Mon, 10 Jan 2022 04:29:50 -0500
Subject: [PATCH] ForwardInfo refactoring

---
 telegram/utils.go | 54 ++++++++++++++++++++++++++---------------------
 1 file changed, 30 insertions(+), 24 deletions(-)

diff --git a/telegram/utils.go b/telegram/utils.go
index 7cc6256..0a70af8 100644
--- a/telegram/utils.go
+++ b/telegram/utils.go
@@ -271,6 +271,32 @@ func (c *Client) formatMessage(chatID int64, messageID int64, preview bool, mess
 	return str.String()
 }
 
+func (c *Client) formatForward(fwd *client.MessageForwardInfo) string {
+	switch fwd.Origin.MessageForwardOriginType() {
+	case client.TypeMessageForwardOriginUser:
+		originUser := fwd.Origin.(*client.MessageForwardOriginUser)
+		return c.formatContact(originUser.SenderUserID)
+	case client.TypeMessageForwardOriginChat:
+		originChat := fwd.Origin.(*client.MessageForwardOriginChat)
+		var signature string
+		if originChat.AuthorSignature != "" {
+			signature = fmt.Sprintf(" (%s)", originChat.AuthorSignature)
+		}
+		return c.formatContact(originChat.SenderChatID)+signature
+	case client.TypeMessageForwardOriginHiddenUser:
+		originUser := fwd.Origin.(*client.MessageForwardOriginHiddenUser)
+		return originUser.SenderName
+	case client.TypeMessageForwardOriginChannel:
+		channel := fwd.Origin.(*client.MessageForwardOriginChannel)
+		var signature string
+		if channel.AuthorSignature != "" {
+			signature = fmt.Sprintf(" (%s)", channel.AuthorSignature)
+		}
+		return c.formatContact(channel.ChatID)+signature
+	}
+	return "Unknown forward type"
+}
+
 func (c *Client) formatContent(file *client.File, filename string) string {
 	if file == nil {
 		return ""
@@ -447,34 +473,14 @@ func (c *Client) messageToPrefix(message *client.Message, fileString string) str
 		}
 		prefix = append(prefix, c.formatContact(senderId))
 	}
-	if message.ForwardInfo != nil {
-		switch message.ForwardInfo.Origin.MessageForwardOriginType() {
-		case client.TypeMessageForwardOriginUser:
-			originUser := message.ForwardInfo.Origin.(*client.MessageForwardOriginUser)
-			prefix = append(prefix, "fwd: "+c.formatContact(originUser.SenderUserID))
-		case client.TypeMessageForwardOriginChat:
-			originChat := message.ForwardInfo.Origin.(*client.MessageForwardOriginChat)
-			var signature string
-			if originChat.AuthorSignature != "" {
-				signature = fmt.Sprintf(" (%s)", originChat.AuthorSignature)
-			}
-			prefix = append(prefix, "fwd: "+c.formatContact(originChat.SenderChatID)+signature)
-		case client.TypeMessageForwardOriginHiddenUser:
-			originUser := message.ForwardInfo.Origin.(*client.MessageForwardOriginHiddenUser)
-			prefix = append(prefix, fmt.Sprintf("fwd: anonymous (%s)", originUser.SenderName))
-		case client.TypeMessageForwardOriginChannel:
-			channel := message.ForwardInfo.Origin.(*client.MessageForwardOriginChannel)
-			var signature string
-			if channel.AuthorSignature != "" {
-				signature = fmt.Sprintf(" (%s)", channel.AuthorSignature)
-			}
-			prefix = append(prefix, "fwd: "+c.formatContact(channel.ChatID)+signature)
-		}
-	}
 	// reply to
 	if message.ReplyToMessageID != 0 {
 		prefix = append(prefix, "reply: "+c.formatMessage(message.ChatID, message.ReplyToMessageID, true, nil))
 	}
+	if message.ForwardInfo != nil {
+		prefix = append(prefix, "fwd: "+c.formatForward(message.ForwardInfo))
+	}
+	// file
 	if fileString != "" {
 		prefix = append(prefix, "file: "+fileString)
 	}