Remove WebhookURL support (discord)

bridge/discord/discord.go

@@ -43,14 +43,7 @@ func New(cfg *bridge.Config) bridge.Bridger {
 	b.nickMemberMap = make(map[string]*discordgo.Member)
 	b.channelInfoMap = make(map[string]*config.ChannelInfo)
 
-	// If WebhookURL is set to anything, we assume preference for autoWebhooks
+	b.useAutoWebhooks = b.GetBool("AutoWebhooks")
-	//
-	// Legacy note: WebhookURL used to have an actual webhook URL that we would edit,
-	// but we stopped doing that due to Discord making rate limits more aggressive.
-	//
-	// We're keeping the same setting for now, and we will late deprecate this setting
-	// in favour of a new setting, something like "AutoWebhooks=true"
-	b.useAutoWebhooks = b.GetString("WebhookURL") != ""
 	if b.useAutoWebhooks {
 		b.Log.Debug("Using automatic webhooks")
 	}
@@ -147,6 +140,19 @@ func (b *Bdiscord) Connect() error {
 		return err
 	}
 
+	// Legacy note: WebhookURL used to have an actual webhook URL that we would edit,
+	// but we stopped doing that due to Discord making rate limits more aggressive.
+	//
+	// Even older: the same WebhookURL used to be used by every channel, which is usually unexpected.
+	// This is no longer possible.
+	if b.GetString("WebhookURL") != "" {
+		message := "The global WebhookURL setting has been removed. "
+		message += "You can get similar \"webhook editing\" behaviour by replacing this line with `AutoWebhooks=true`. "
+		message += "If you rely on the old-OLD (non-editing) behaviour, can move the WebhookURL to specific channel sections."
+		b.Log.Errorln(message)
+		return fmt.Errorf("use of removed WebhookURL setting")
+	}
+
 	// Initialise webhook management
 	b.transmitter = transmitter.New(b.c, b.guildID, "matterbridge", b.useAutoWebhooks)
 	b.transmitter.Log = b.Log

bridge/discord/transmitter/transmitter.go

@@ -111,7 +111,7 @@ func (t *Transmitter) HasWebhook(id string) bool {
 }
 
 // AddWebhook allows you to register a channel's webhook with the transmitter.
-func (t *Transmitter) AddWebhook(channelID string, webhook *discordgo.Webhook) (replaced bool) {
+func (t *Transmitter) AddWebhook(channelID string, webhook *discordgo.Webhook) bool {
 	t.Log.Debugf("Manually added webhook %#v to channel %#v", webhook.ID, channelID)
 	t.mutex.Lock()
 	defer t.mutex.Unlock()