refactor(helpers): separate functions into files (#667)

* refactor(helpers): separate functions into files

* idk

* idk

src/handlers/members/GUILD_MEMBER_UPDATE.ts

@@ -0,0 +1,59 @@
+import { eventHandlers } from "../../bot.ts";
+import { DiscordPayload, GuildMemberUpdatePayload } from "../../types/mod.ts";
+import { structures } from "../../structures/mod.ts";
+import { cacheHandlers } from "../../cache.ts";
+
+export async function handleGuildMemberUpdate(data: DiscordPayload) {
+  const payload = data.d as GuildMemberUpdatePayload;
+  const guild = await cacheHandlers.get("guilds", payload.guild_id);
+  if (!guild) return;
+
+  const cachedMember = await cacheHandlers.get("members", payload.user.id);
+  const guildMember = cachedMember?.guilds.get(payload.guild_id);
+
+  const newMemberData = {
+    ...payload,
+    // deno-lint-ignore camelcase
+    premium_since: payload.premium_since || undefined,
+    // deno-lint-ignore camelcase
+    joined_at: new Date(guildMember?.joinedAt || Date.now())
+      .toISOString(),
+    deaf: guildMember?.deaf || false,
+    mute: guildMember?.mute || false,
+    roles: payload.roles,
+  };
+  const memberStruct = await structures.createMemberStruct(
+    newMemberData,
+    payload.guild_id,
+  );
+  await cacheHandlers.set("members", memberStruct.id, memberStruct);
+
+  if (guildMember?.nick !== payload.nick) {
+    eventHandlers.nicknameUpdate?.(
+      guild,
+      memberStruct,
+      payload.nick,
+      guildMember?.nick,
+    );
+  }
+
+  if (payload.pending === false && guildMember?.pending === true) {
+    eventHandlers.membershipScreeningPassed?.(guild, memberStruct);
+  }
+
+  const roleIDs = guildMember?.roles || [];
+
+  roleIDs.forEach((id) => {
+    if (!payload.roles.includes(id)) {
+      eventHandlers.roleLost?.(guild, memberStruct, id);
+    }
+  });
+
+  payload.roles.forEach((id) => {
+    if (!roleIDs.includes(id)) {
+      eventHandlers.roleGained?.(guild, memberStruct, id);
+    }
+  });
+
+  eventHandlers.guildMemberUpdate?.(guild, memberStruct, cachedMember);
+}