From db62b9a1d875f654eec845c19d7309832d6af576 Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Tue, 29 Apr 2025 02:26:50 +0300
Subject: [PATCH] commands: ignore notices

---
 commands/event.go     | 6 ++++++
 commands/processor.go | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/commands/event.go b/commands/event.go
index 10d6283f..c02bd3b9 100644
--- a/commands/event.go
+++ b/commands/event.go
@@ -58,10 +58,16 @@ var IDHTMLParser = &format.HTMLParser{
 // ParseEvent parses a message into a command event struct.
 func ParseEvent[MetaType any](ctx context.Context, evt *event.Event) *Event[MetaType] {
 	content := evt.Content.Parsed.(*event.MessageEventContent)
+	if content.MsgType == event.MsgNotice || content.RelatesTo.GetReplaceID() != "" {
+		return nil
+	}
 	text := content.Body
 	if content.Format == event.FormatHTML {
 		text = IDHTMLParser.Parse(content.FormattedBody, format.NewContext(ctx))
 	}
+	if len(text) == 0 {
+		return nil
+	}
 	parts := strings.Fields(text)
 	return &Event[MetaType]{
 		Event:    evt,
diff --git a/commands/processor.go b/commands/processor.go
index 1e0a99a2..cc55aceb 100644
--- a/commands/processor.go
+++ b/commands/processor.go
@@ -62,7 +62,7 @@ func (proc *Processor[MetaType]) Process(ctx context.Context, evt *event.Event)
 		}
 	}()
 	parsed := ParseEvent[MetaType](ctx, evt)
-	if !proc.PreValidator.Validate(parsed) {
+	if parsed == nil || !proc.PreValidator.Validate(parsed) {
 		return
 	}
 	parsed.Proc = proc