refactor: rename controllers to handlers and handlers to helpers (#660)

* refactor: rename controllers to handlers and handlers to helpers

* fmt

src/handlers/messages/MESSAGE_REACTION_REMOVE.ts

@@ -0,0 +1,58 @@
+import { botID, eventHandlers } from "../../bot.ts";
+import { DiscordPayload, MessageReactionPayload } from "../../types/mod.ts";
+import { structures } from "../../structures/mod.ts";
+import { cacheHandlers } from "../../cache.ts";
+
+export async function handleMessageReactionRemove(
+  data: DiscordPayload,
+) {
+  const payload = data.d as MessageReactionPayload;
+  const message = await cacheHandlers.get("messages", payload.message_id);
+
+  if (message) {
+    const reactionExisted = message.reactions?.find(
+      (reaction) =>
+        reaction.emoji.id === payload.emoji.id &&
+        reaction.emoji.name === payload.emoji.name,
+    );
+
+    if (reactionExisted) reactionExisted.count--;
+    else {
+      const newReaction = {
+        count: 1,
+        me: payload.user_id === botID,
+        emoji: { ...payload.emoji, id: payload.emoji.id || undefined },
+      };
+      message.reactions = message.reactions
+        ? [...message.reactions, newReaction]
+        : [newReaction];
+    }
+
+    await cacheHandlers.set("messages", payload.message_id, message);
+  }
+
+  if (payload.member && payload.guild_id) {
+    const guild = await cacheHandlers.get("guilds", payload.guild_id);
+    if (guild) {
+      const memberStruct = await structures.createMemberStruct(
+        payload.member,
+        guild.id,
+      );
+      await cacheHandlers.set("members", memberStruct.id, memberStruct);
+    }
+  }
+
+  const uncachedOptions = {
+    ...payload,
+    id: payload.message_id,
+    channelID: payload.channel_id,
+    guildID: payload.guild_id,
+  };
+
+  eventHandlers.reactionRemove?.(
+    uncachedOptions,
+    payload.emoji,
+    payload.user_id,
+    message,
+  );
+}