From 36fae98a05d0acad5dc63786548dab274f8b7aa0 Mon Sep 17 00:00:00 2001
From: Skillz <gankstarsleague@gmail.com>
Date: Fri, 28 Aug 2020 13:46:41 -0400
Subject: [PATCH] better reaction handling

---
 src/handlers/message.ts | 14 ++++++++++++++
 src/types/errors.ts     |  1 +
 2 files changed, 15 insertions(+)

diff --git a/src/handlers/message.ts b/src/handlers/message.ts
index b2898d258..da9d90db2 100644
--- a/src/handlers/message.ts
+++ b/src/handlers/message.ts
@@ -65,6 +65,16 @@ export function addReaction(
   messageID: string,
   reaction: string,
 ) {
+  if (!botHasChannelPermissions(channelID, [Permissions.ADD_REACTIONS])) {
+    throw new Error(Errors.MISSING_ADD_REACTIONS);
+  }
+
+  if (
+    !botHasChannelPermissions(channelID, [Permissions.READ_MESSAGE_HISTORY])
+  ) {
+    throw new Error(Errors.MISSING_READ_MESSAGE_HISTORY);
+  }
+
   return RequestManager.put(
     endpoints.CHANNEL_MESSAGE_REACTION_ME(
       channelID,
@@ -114,6 +124,10 @@ export function removeUserReaction(
   reaction: string,
   userID: string,
 ) {
+  if (!botHasChannelPermissions(channelID, [Permissions.MANAGE_MESSAGES])) {
+    throw new Error(Errors.MISSING_MANAGE_MESSAGES);
+  }
+
   RequestManager.delete(
     endpoints.CHANNEL_MESSAGE_REACTION_USER(
       channelID,
diff --git a/src/types/errors.ts b/src/types/errors.ts
index 7e160d49f..da321ff35 100644
--- a/src/types/errors.ts
+++ b/src/types/errors.ts
@@ -17,6 +17,7 @@ export enum Errors {
   MISSING_MANAGE_GUILD = "MISSING_MANAGE_GUILD",
   MISSING_VIEW_AUDIT_LOG = "MISSING_VIEW_AUDIT_LOG",
   MISSING_EMBED_LINKS = "MISSING_EMBED_LINKS",
+  MISSING_ADD_REACTIONS = "MISSING_ADD_REACTIONS",
   DELETE_MESSAGES_MIN = "DELETE_MESSAGES_MIN",
   MESSAGE_MAX_LENGTH = "MESSAGE_MAX_LENGTH",
   NICKNAMES_MAX_LENGTH = "NICKNAMES_MAX_LENGTH",