From 61d9a60704a25c108576b442d52bb60f51336c0b Mon Sep 17 00:00:00 2001
From: Andrew Ferrazzutti <fair@miscworks.net>
Date: Sat, 9 Apr 2022 04:02:51 -0400
Subject: [PATCH] Outgoing message redactions

---
 .../kt/client/client.py                       | 11 ++++
 matrix_appservice_kakaotalk/portal.py         | 55 ++++++++++++++++---
 node/src/client.js                            | 15 +++++
 3 files changed, 72 insertions(+), 9 deletions(-)

diff --git a/matrix_appservice_kakaotalk/kt/client/client.py b/matrix_appservice_kakaotalk/kt/client/client.py
index 69ace8a..390e472 100644
--- a/matrix_appservice_kakaotalk/kt/client/client.py
+++ b/matrix_appservice_kakaotalk/kt/client/client.py
@@ -343,6 +343,17 @@ class Client:
             is_secret=True
         )
 
+    async def delete_chat(
+        self,
+        channel_props: ChannelProps,
+        chat_id: Long,
+    ) -> None:
+        return await self._api_user_request_void(
+            "delete_chat",
+            channel_props=channel_props.serialize(),
+            chat_id=chat_id.serialize(),
+        )
+
 
     # TODO Combine these into one
 
diff --git a/matrix_appservice_kakaotalk/portal.py b/matrix_appservice_kakaotalk/portal.py
index 6c798ee..577d5c3 100644
--- a/matrix_appservice_kakaotalk/portal.py
+++ b/matrix_appservice_kakaotalk/portal.py
@@ -879,24 +879,61 @@ class Portal(DBPortal, BasePortal):
         self, sender: u.User, event_id: EventID, redaction_event_id: EventID
     ) -> None:
         try:
-            await self._handle_matrix_redaction(sender, event_id, redaction_event_id)
+            await self._handle_matrix_redaction(sender, event_id)
         except Exception as e:
-            self.log.exception(f"Failed to handle Matrix event {event_id}: {e}")
+            self.log.error(
+                f"Failed to handle Matrix redaction {redaction_event_id}: {e}",
+                exc_info=not isinstance(e, NotImplementedError),
+            )
             sender.send_remote_checkpoint(
                 self._status_from_exception(e),
-                event_id,
+                redaction_event_id,
                 self.mxid,
                 EventType.ROOM_REDACTION,
                 error=e,
             )
-            await self._send_bridge_error(str(e))
+            if not isinstance(e, NotImplementedError):
+                await self._send_bridge_error(str(e), thing="redaction")
         else:
-            await self._send_delivery_receipt(event_id)
+            await self._send_delivery_receipt(redaction_event_id)
+            sender.send_remote_checkpoint(
+                MessageSendCheckpointStatus.SUCCESS,
+                redaction_event_id,
+                self.mxid,
+                EventType.ROOM_REDACTION,
+            )
 
-    async def _handle_matrix_redaction(
-        self, sender: u.User, event_id: EventID, redaction_event_id: EventID
-    ) -> None:
-        self.log.info("TODO: _handle_matrix_redaction")
+    async def _handle_matrix_redaction(self, sender: u.User, event_id: EventID) -> None:
+        sender, _ = await self.get_relay_sender(sender, f"redaction {event_id}")
+        if not sender:
+            raise Exception("not logged in")
+        message = await DBMessage.get_by_mxid(event_id, self.mxid)
+        if message:
+            if not message.ktid:
+                raise NotImplementedError("Tried to redact message whose ktid is unknown")
+            try:
+                await message.delete()
+                await sender.client.delete_chat(self.channel_props, message.ktid)
+            except Exception as e:
+                self.log.exception(f"Unsend failed: {e}")
+                raise
+            return
+
+        raise NotImplementedError("Only message redactions are supported")
+
+        """ TODO
+        reaction = await DBReaction.get_by_mxid(event_id, self.mxid)
+        if reaction:
+            try:
+                await reaction.delete()
+                await sender.client.react(reaction.kt_msgid, None)
+            except Exception as e:
+                self.log.exception(f"Removing reaction failed: {e}")
+                raise
+            return
+
+        raise NotImplementedError("Only message and reaction redactions are supported")
+        """
 
     async def handle_matrix_reaction(
         self, sender: u.User, event_id: EventID, reacting_to: EventID, reaction: str
diff --git a/node/src/client.js b/node/src/client.js
index 5353bab..4c40ae3 100644
--- a/node/src/client.js
+++ b/node/src/client.js
@@ -570,6 +570,20 @@ export default class PeerClient {
 		})
 	}
 
+	/**
+	 * @param {Object} req
+	 * @param {string} req.mxid
+	 * @param {ChannelProps} req.channel_props
+	 * @param {Long} req.chat_id
+	 */
+	deleteChat = async (req) => {
+		const talkChannel = await this.#getUserChannel(req.mxid, req.channel_props)
+
+		return await talkChannel.deleteChat({
+			logId: req.chat_id,
+		})
+	}
+
 	#makeCommandResult(result) {
 		return {
 			success: true,
@@ -653,6 +667,7 @@ export default class PeerClient {
 				get_memo_ids: this.getMemoIds,
 				send_chat: this.sendChat,
 				send_media: this.sendMedia,
+				delete_chat: this.deleteChat,
 			}[req.command] || this.handleUnknownCommand
 		}
 		const resp = { id: req.id }