Rework the YTModule and CacheServer

src/client.ts

@@ -6,7 +6,6 @@ type MPServerCache = Record<string,{
   status: 'online' | 'offline' | null,
   name: string | null
 }>
-type YouTubeCache = Record<string,string>
 import Discord from 'discord.js';
 import {readFileSync, readdirSync} from 'node:fs';
 import {Tokens, Config, FSPlayer} from './typings/interfaces';
@@ -39,7 +38,6 @@ export default class TClient extends Discord.Client {
   registry: Array<Discord.ApplicationCommandDataResolvable>;
   config: Config;
   tokens: Tokens;
-  YTCache: YouTubeCache = {};
   embed: typeof Discord.EmbedBuilder;
   collection: typeof Discord.Collection;
   attachmentBuilder: typeof Discord.AttachmentBuilder;
@@ -73,10 +71,6 @@ export default class TClient extends Discord.Client {
     this.registry = [];
     this.config = importconfig as Config;
     this.tokens = tokens as Tokens;
-    this.YTCache = {
-      'UCQ8k8yTDLITldfWYKDs3xFg': undefined, // Daggerwin
-      'UCguI73--UraJpso4NizXNzA': undefined // Machinery Restorer
-    } as YouTubeCache;
     this.embed = Discord.EmbedBuilder;
     this.collection = Discord.Collection;
     this.attachmentBuilder = Discord.AttachmentBuilder;

src/funcs/CacheServer.ts

@@ -19,30 +19,33 @@ export default class CacheServer {
   protected static eventManager() {
     RedisClient
       .on('connect', ()=>Logger.forwardToConsole('log', Prefix, 'Connection to Redis has been established'))
-      .on('error', (err:ErrorReply)=>Logger.forwardToConsole('error', Prefix, `Encountered an error in Redis: ${err.message}`))
-    }
-  protected static async connect() {
+      .on('error', (err:ErrorReply)=>{
+        Logger.forwardToConsole('error', Prefix, `Encountered an error in Redis: ${err.message}`)
+        setTimeout(async()=>{
+          if (!RedisClient.isReady) {
+            Logger.forwardToConsole('log', Prefix, 'Client is zombified, starting a fresh connection...');
+            RedisClient.quit();
             await RedisClient.connect();
           }
+        }, 1500)
+      })
+  }
   static async get(key:any) {
     const cachedResult = await RedisClient.get(key);
     if (cachedResult) return JSON.parse(cachedResult);
     else return null
   }
   static async set(key:any, value:any) {
-    Logger.forwardToConsole('log', Prefix, `Building cache for ${key}`);
     return await RedisClient.set(key, JSON.stringify(value));
   }
   static async expiry(key:any, time:number) {
-    Logger.forwardToConsole('log', Prefix, `Setting expiration for ${key} to ${time} seconds`);
-    return await RedisClient.expire(key, time);
+    return await RedisClient.expire(key, time); // NOTE: time is in seconds, not milliseconds -- you know what you did wrong
   }
   static async delete(key:any) {
-    Logger.forwardToConsole('log', Prefix, `Deleting cache for ${key}`);
     return await RedisClient.del(key);
   }
   static init() {
-    this.connect();    
+    RedisClient.connect();
     this.eventManager();
   }
 }

src/funcs/YTModule.ts

@@ -1,20 +1,38 @@
 import {TextChannel} from 'discord.js';
 import TClient from '../client.js';
 import Logger from '../helpers/Logger.js';
+import CacheServer from './CacheServer.js';
 import MessageTool from '../helpers/MessageTool.js';
 
 export default async(client:TClient, YTChannelID:string, YTChannelName:string, DiscordChannelID:string, DiscordRoleID:string)=>{
   let Data: any;
+  let cacheExpiry: number = 14400; // Invalidate cache after sitting in Redis for 4 hours
   try {
-    await fetch(`https://www.youtube.com/feeds/videos.xml?channel_id=${YTChannelID}`, {signal: AbortSignal.timeout(8000), headers: {'User-Agent': 'Daggerbot - Notification/undici'}}).then(async xml=>Data = client.xjs.xml2js(await xml.text(), {compact: true}))
+    await fetch(`https://www.youtube.com/feeds/videos.xml?channel_id=${YTChannelID}`, {
+      signal: AbortSignal.timeout(10000),
+      headers: {'User-Agent':'Daggerbot - Notification/undici'},
+    }).then(async xml=>(Data = client.xjs.xml2js(await xml.text(), {compact: true})));
   } catch (err) {
-    Logger.forwardToConsole('log', 'YTModule', `Failed to fetch "${YTChannelName}" from YouTube`)
+    Logger.forwardToConsole('log', 'YTModule', `Failed to fetch "${YTChannelName}" from YouTube`);
+  }
+  if (!Data) return;
+  const cacheKey = `YTCache:${YTChannelID}`;
+  const cachedVideoId = await CacheServer.get(cacheKey);
+  if (!cachedVideoId) {
+    const videoId = Data.feed.entry[0]['yt:videoId']._text;
+    await CacheServer.set(cacheKey, videoId).then(async()=>await CacheServer.expiry(cacheKey, cacheExpiry));
+    return;
   }
 
-  if (!Data) return;
-  if (!client.YTCache[YTChannelID]) return client.YTCache[YTChannelID] = Data.feed.entry[0]['yt:videoId']._text;
-  if (Data.feed.entry[1]['yt:videoId']._text === client.YTCache[YTChannelID]){
-    client.YTCache[YTChannelID] = Data.feed.entry[0]['yt:videoId']._text;
-    (client.channels.resolve(DiscordChannelID) as TextChannel).send({content: `${MessageTool.formatMention(DiscordRoleID, 'role')}\n**${YTChannelName}** just uploaded a video!\n${Data.feed.entry[0].link._attributes.href}`, allowedMentions: {parse: ['roles']}})
+  if (Data.feed.entry[1]['yt:videoId']._text === cachedVideoId) {
+    const videoId = Data.feed.entry[0]['yt:videoId']._text;
+    await CacheServer.delete(cacheKey).then(async()=>{
+      await CacheServer.set(cacheKey, videoId).then(async()=>await CacheServer.expiry(cacheKey, cacheExpiry))
+    });
+
+    (client.channels.resolve(DiscordChannelID) as TextChannel).send({
+      content: `${MessageTool.formatMention(DiscordRoleID, 'role')}\n**${YTChannelName}** just uploaded a video!\n${Data.feed.entry[0].link._attributes.href}`,
+      allowedMentions: {parse:['roles']},
+    });
   }
 }

src/index.ts

@@ -38,11 +38,11 @@ if (client.config.botSwitches.music){
 if (client.config.botSwitches.mpstats) setInterval(async()=>{
   const serverlake = (await client.MPServer.findInCache(client.config.mainServer.id));
   for await (const [locName, locArea] of Object.entries(client.config.MPStatsLocation)) await MPModule(client, locArea.channel, locArea.message, serverlake[locName], locName)
-}, 35000);
-setInterval(async()=>{// Ping notification is currently WIP, it might be active in production but I want to see how it goes with role mentions first so I can make any further changes.
+}, 35000); // 35 seconds
+setInterval(async()=>{
 	YTModule(client, 'UCQ8k8yTDLITldfWYKDs3xFg', 'Daggerwin', '528967918772551702', '1155760735612305408'); // 528967918772551702 = #videos-and-streams; 1155760735612305408 = YT Upload Ping;
 	YTModule(client, 'UCguI73--UraJpso4NizXNzA', 'Machinery Restorer', '767444045520961567', '1155760735612305408') // 767444045520961567 = #machinery-restorer; ^^
-}, 300000)
+}, 300000); // 5 minutes
 
 // Event loop for punishments and daily msgs
 setInterval(async()=>{