From 381269311172c9586589b6438f960b173578ca25 Mon Sep 17 00:00:00 2001
From: Wim <wim@42.be>
Date: Tue, 23 May 2017 22:26:37 +0200
Subject: [PATCH] Replace long ids in channel metions (discord). Fixes #174

---
 bridge/discord/discord.go | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/bridge/discord/discord.go b/bridge/discord/discord.go
index f6f3077f..f379ede6 100644
--- a/bridge/discord/discord.go
+++ b/bridge/discord/discord.go
@@ -140,6 +140,7 @@ func (b *bdiscord) messageCreate(s *discordgo.Session, m *discordgo.MessageCreat
 		m.Message.Content = b.replaceRoleMentions(m.Message.Content)
 	}
 	m.Message.Content = b.stripCustomoji(m.Message.Content)
+	m.Message.Content = b.replaceChannelMentions(m.Message.Content)
 	b.Remote <- config.Message{Username: username, Text: m.ContentWithMentionsReplaced(), Channel: channelName,
 		Account: b.Account, Avatar: "https://cdn.discordapp.com/avatars/" + m.Author.ID + "/" + m.Author.Avatar + ".jpg"}
 }
@@ -213,6 +214,25 @@ func (b *bdiscord) replaceRoleMentions(text string) string {
 	return text
 }
 
+func (b *bdiscord) replaceChannelMentions(text string) string {
+	var err error
+	re := regexp.MustCompile("<#[0-9]+>")
+	text = re.ReplaceAllStringFunc(text, func(m string) string {
+		channel := b.getChannelName(m[2 : len(m)-1])
+		// if at first don't succeed, try again
+		if channel == "" {
+			b.Channels, err = b.c.GuildChannels(b.guildID)
+			if err != nil {
+				return "#unknownchannel"
+			}
+			channel = b.getChannelName(m[2 : len(m)-1])
+			return channel
+		}
+		return channel
+	})
+	return text
+}
+
 func (b *bdiscord) stripCustomoji(text string) string {
 	// <:doge:302803592035958784>
 	re := regexp.MustCompile("<(:.*?:)[0-9]+>")