From b3c883bc7fa39021bf8cfde6d51ce5860b8dded5 Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Mon, 22 Sep 2025 16:05:28 +0300
Subject: [PATCH] event: add beeper chat delete event

---
 event/beeper.go         |  4 ++++
 event/capabilities.d.ts |  5 +++++
 event/capabilities.go   | 12 +++++++-----
 event/content.go        |  1 +
 event/type.go           |  3 ++-
 5 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/event/beeper.go b/event/beeper.go
index 921e3466..95b4a571 100644
--- a/event/beeper.go
+++ b/event/beeper.go
@@ -86,6 +86,10 @@ type BeeperRoomKeyAckEventContent struct {
 	FirstMessageIndex int          `json:"first_message_index"`
 }
 
+type BeeperChatDeleteEventContent struct {
+	DeleteForEveryone bool `json:"delete_for_everyone,omitempty"`
+}
+
 type IntOrString int
 
 func (ios *IntOrString) UnmarshalJSON(data []byte) error {
diff --git a/event/capabilities.d.ts b/event/capabilities.d.ts
index 27164a5f..37848575 100644
--- a/event/capabilities.d.ts
+++ b/event/capabilities.d.ts
@@ -55,6 +55,11 @@ export interface RoomFeatures {
 	allowed_reactions?: string[]
 	/** Whether custom emoji reactions are allowed. */
 	custom_emoji_reactions?: boolean
+
+	/** Whether deleting the chat for yourself is supported. */
+	delete_chat?: boolean
+	/** Whether deleting the chat for all participants is supported. */
+	delete_chat_for_everyone?: boolean
 }
 
 declare type integer = number
diff --git a/event/capabilities.go b/event/capabilities.go
index 94662428..31a6b7aa 100644
--- a/event/capabilities.go
+++ b/event/capabilities.go
@@ -51,11 +51,12 @@ type RoomFeatures struct {
 	AllowedReactions     []string               `json:"allowed_reactions,omitempty"`
 	CustomEmojiReactions bool                   `json:"custom_emoji_reactions,omitempty"`
 
-	ReadReceipts        bool `json:"read_receipts,omitempty"`
-	TypingNotifications bool `json:"typing_notifications,omitempty"`
-	Archive             bool `json:"archive,omitempty"`
-	MarkAsUnread        bool `json:"mark_as_unread,omitempty"`
-	DeleteChat          bool `json:"delete_chat,omitempty"`
+	ReadReceipts          bool `json:"read_receipts,omitempty"`
+	TypingNotifications   bool `json:"typing_notifications,omitempty"`
+	Archive               bool `json:"archive,omitempty"`
+	MarkAsUnread          bool `json:"mark_as_unread,omitempty"`
+	DeleteChat            bool `json:"delete_chat,omitempty"`
+	DeleteChatForEveryone bool `json:"delete_chat_for_everyone,omitempty"`
 }
 
 func (rf *RoomFeatures) GetID() string {
@@ -262,6 +263,7 @@ func (rf *RoomFeatures) Hash() []byte {
 	hashBool(hasher, "archive", rf.Archive)
 	hashBool(hasher, "mark_as_unread", rf.MarkAsUnread)
 	hashBool(hasher, "delete_chat", rf.DeleteChat)
+	hashBool(hasher, "delete_chat_for_everyone", rf.DeleteChatForEveryone)
 
 	return hasher.Sum(nil)
 }
diff --git a/event/content.go b/event/content.go
index 5e093273..c0ff51ad 100644
--- a/event/content.go
+++ b/event/content.go
@@ -63,6 +63,7 @@ var TypeMap = map[Type]reflect.Type{
 
 	BeeperMessageStatus: reflect.TypeOf(BeeperMessageStatusEventContent{}),
 	BeeperTranscription: reflect.TypeOf(BeeperTranscriptionEventContent{}),
+	BeeperDeleteChat:    reflect.TypeOf(BeeperChatDeleteEventContent{}),
 
 	AccountDataRoomTags:        reflect.TypeOf(TagEventContent{}),
 	AccountDataDirectChats:     reflect.TypeOf(DirectChatsEventContent{}),
diff --git a/event/type.go b/event/type.go
index 1b4fbf76..56ea82f6 100644
--- a/event/type.go
+++ b/event/type.go
@@ -128,7 +128,7 @@ func (et *Type) GuessClass() TypeClass {
 		InRoomVerificationKey.Type, InRoomVerificationMAC.Type, InRoomVerificationCancel.Type,
 		CallInvite.Type, CallCandidates.Type, CallAnswer.Type, CallReject.Type, CallSelectAnswer.Type,
 		CallNegotiate.Type, CallHangup.Type, BeeperMessageStatus.Type, EventUnstablePollStart.Type, EventUnstablePollResponse.Type,
-		EventUnstablePollEnd.Type, BeeperTranscription.Type:
+		EventUnstablePollEnd.Type, BeeperTranscription.Type, BeeperDeleteChat.Type:
 		return MessageEventType
 	case ToDeviceRoomKey.Type, ToDeviceRoomKeyRequest.Type, ToDeviceForwardedRoomKey.Type, ToDeviceRoomKeyWithheld.Type,
 		ToDeviceBeeperRoomKeyAck.Type:
@@ -236,6 +236,7 @@ var (
 
 	BeeperMessageStatus = Type{"com.beeper.message_send_status", MessageEventType}
 	BeeperTranscription = Type{"com.beeper.transcription", MessageEventType}
+	BeeperDeleteChat    = Type{"com.beeper.delete_chat", MessageEventType}
 
 	EventUnstablePollStart    = Type{Type: "org.matrix.msc3381.poll.start", Class: MessageEventType}
 	EventUnstablePollResponse = Type{Type: "org.matrix.msc3381.poll.response", Class: MessageEventType}