[ShowHiddenChannels] Fix last message date (#342)

src/api/Commands/commandHelpers.ts

@@ -17,7 +17,8 @@
 */
 
 import { mergeDefaults } from "@utils/misc";
-import { findByCodeLazy, findByPropsLazy, waitFor } from "@webpack";
+import { findByCodeLazy, findByPropsLazy } from "@webpack";
+import { SnowflakeUtils } from "@webpack/common";
 import { Message } from "discord-types/general";
 import type { PartialDeep } from "type-fest";
 
@@ -26,9 +27,6 @@ import { Argument } from "./types";
 const createBotMessage = findByCodeLazy('username:"Clyde"');
 const MessageSender = findByPropsLazy("receiveMessage");
 
-let SnowflakeUtils: any;
-waitFor("fromTimestamp", m => SnowflakeUtils = m);
-
 export function generateId() {
     return `-${SnowflakeUtils.fromTimestamp(Date.now())}`;
 }

src/plugins/showHiddenChannels.tsx

@@ -23,7 +23,7 @@ import { Devs } from "@utils/constants";
 import { ModalContent, ModalFooter, ModalHeader, ModalRoot, ModalSize, openModal } from "@utils/modal";
 import definePlugin, { OptionType } from "@utils/types";
 import { waitFor } from "@webpack";
-import { Button, ChannelStore, Text } from "@webpack/common";
+import { Button, ChannelStore, SnowflakeUtils, Text } from "@webpack/common";
 
 const CONNECT = 1048576n;
 const VIEW_CHANNEL = 1024n;
@@ -117,7 +117,7 @@ export default definePlugin({
         const isHidden = this.isHiddenChannel(channel);
         // check for type again, otherwise it would show it for hidden stage channels
         if (channel.type === 0 && isHidden) {
-            const lastMessageDate = channel.lastActiveTimestamp ? new Date(channel.lastActiveTimestamp).toLocaleString() : null;
+            const lastMessageDate = channel.lastMessageId ? new Date(SnowflakeUtils.extractTimestamp(channel.lastMessageId)).toLocaleString() : null;
             openModal(modalProps => (
                 <ModalRoot size={ModalSize.SMALL} {...modalProps}>
                     <ModalHeader>

src/webpack/common.tsx

@@ -76,6 +76,9 @@ export const TextArea = findByCodeLazy("handleSetRef", "textArea") as React.Comp
 export const Select = LazyComponent(() => findByCode("optionClassName", "popoutPosition", "autoFocus", "maxVisibleItems"));
 export const Slider = LazyComponent(() => findByCode("closestMarkerIndex", "stickToMarkers"));
 
+export let SnowflakeUtils: { fromTimestamp: (timestamp: number) => string, extractTimestamp: (snowflake: string) => number };
+waitFor(["fromTimestamp", "extractTimestamp"], m => SnowflakeUtils = m);
+
 export let Parser: any;
 export let Alerts: {
     show(alert: {