From 1319e0c04e21bb07badede04297bbc4cf8d61854 Mon Sep 17 00:00:00 2001
From: Madeline <46743919+MaddyUnderStars@users.noreply.github.com>
Date: Sat, 23 Apr 2022 01:28:03 +1000
Subject: [PATCH] Can no longer send messages to channel types that do not
 support it ( categories, voice etc )

---
 api/src/routes/channels/#channel_id/messages/index.ts |  5 +++++
 util/src/entities/Channel.ts                          | 11 +++++++++++
 2 files changed, 16 insertions(+)

diff --git a/api/src/routes/channels/#channel_id/messages/index.ts b/api/src/routes/channels/#channel_id/messages/index.ts
index af0ae32d..34cc5ff8 100644
--- a/api/src/routes/channels/#channel_id/messages/index.ts
+++ b/api/src/routes/channels/#channel_id/messages/index.ts
@@ -183,6 +183,9 @@ router.post(
 			}
 		}
 		const channel = await Channel.findOneOrFail({ where: { id: channel_id }, relations: ["recipients", "recipients.user"] });
+		if (!channel.isWritable()) {
+			throw new HTTPError(`Cannot send messages to channel of type ${channel.type}`, 400)
+		}
 
 		const embeds = body.embeds || [];
 		if (body.embed) embeds.push(body.embed);
@@ -220,6 +223,8 @@ router.post(
 				})
 			);
 		}
+
+
 	
 		//Fix for the client bug
 		delete message.member
diff --git a/util/src/entities/Channel.ts b/util/src/entities/Channel.ts
index 4bf81901..c516e6a1 100644
--- a/util/src/entities/Channel.ts
+++ b/util/src/entities/Channel.ts
@@ -352,6 +352,17 @@ export class Channel extends BaseClass {
 	isDm() {
 		return this.type === ChannelType.DM || this.type === ChannelType.GROUP_DM;
 	}
+
+	// Does the channel support sending messages ( eg categories do not )
+	isWritable() {
+		const disallowedChannelTypes = [
+			ChannelType.GUILD_CATEGORY,
+			ChannelType.GUILD_VOICE,		// TODO: Remove this when clients can send messages to voice channels on discord.com
+			ChannelType.GUILD_STAGE_VOICE,
+			ChannelType.VOICELESS_WHITEBOARD,
+		];
+		return disallowedChannelTypes.indexOf(this.type) == -1;
+	}
 }
 
 export interface ChannelPermissionOverwrite {