From 730f7472b30342b5ddfb0257167e3e7c60c806dc Mon Sep 17 00:00:00 2001
From: David Florness <david@florness.com>
Date: Sat, 22 May 2021 18:51:42 -0400
Subject: [PATCH] deletemymsgs

---
 deletemymsgs/cmd.go | 70 +++++++++++++++++++++++++++++++++++++++++++++
 main.go             |  5 ++--
 2 files changed, 73 insertions(+), 2 deletions(-)
 create mode 100644 deletemymsgs/cmd.go

diff --git a/deletemymsgs/cmd.go b/deletemymsgs/cmd.go
new file mode 100644
index 0000000..520830c
--- /dev/null
+++ b/deletemymsgs/cmd.go
@@ -0,0 +1,70 @@
+package deletemymsgs
+
+import (
+	"fmt"
+	"os"
+
+	"git.hnitbjorg.xyz/~edwargix/axon/shared"
+	"github.com/rwxrob/cmdtab"
+	"maunium.net/go/mautrix"
+	"maunium.net/go/mautrix/event"
+	"maunium.net/go/mautrix/id"
+)
+
+func init() {
+	x := cmdtab.New("deletemymsgs")
+	x.Summary = "delete all messages we've sent to a particular room (be careful!)"
+	x.Usage = "<roomID>"
+
+	x.Method = func(args []string) error {
+		if len(args) != 1 {
+			return x.UsageError()
+		}
+		return deletemymsgs(id.RoomID(args[0]))
+	}
+}
+
+func deletemymsgs(roomID id.RoomID) error {
+	authInfo, err := shared.GetAuthInfo()
+	if err != nil {
+		return err
+	}
+
+	client, err := mautrix.NewClient(authInfo.Homeserver, authInfo.UserID, authInfo.AccessToken)
+	if err != nil {
+		return err
+	}
+
+	syncer := client.Syncer.(*mautrix.DefaultSyncer)
+	syncer.OnEvent(func (source mautrix.EventSource, evt *event.Event) {
+		// skip events that we didn't send
+		if evt.Sender != client.UserID {
+			return
+		}
+		// skip events that aren't in this room
+		if evt.RoomID != roomID {
+			return
+		}
+		// only redact messages events (not state, ephemeral, etc.)
+		if evt.Type.Class != event.MessageEventType {
+			return
+		}
+		// don't redact redactions
+		if evt.Type.Type == "m.room.redaction" {
+			return
+		}
+		if evt.Unsigned.RedactedBecause != nil {
+			fmt.Printf("event %s already redacted\n", evt.ID)
+			return
+		}
+		_, err := client.RedactEvent(evt.RoomID, evt.ID)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "couldn't redact event %v: %s\n", evt, err)
+			return
+		}
+		fmt.Printf("redacted event %v\n", evt)
+	})
+
+	fmt.Printf("Deleting messages from room with ID %s...\n", roomID)
+	return client.Sync()
+}
diff --git a/main.go b/main.go
index 6fbbdd4..41c47af 100644
--- a/main.go
+++ b/main.go
@@ -1,12 +1,13 @@
 package main
 
 import (
-	"github.com/rwxrob/cmdtab"
 	_ "git.hnitbjorg.xyz/~edwargix/axon/autojoin"
+	_ "git.hnitbjorg.xyz/~edwargix/axon/deletemymsgs"
+	"github.com/rwxrob/cmdtab"
 )
 
 func main() {
-	x := cmdtab.New("axon", "autojoin")
+	x := cmdtab.New("axon", "autojoin", "deletemymsgs")
 	x.Summary = "a set of simple Matrix utility programs for the Client-Server API"
 	x.Usage = "<cmd>"
 	x.Version = "v0.0.0"
-- 
2.38.4