add discord bot

file/User.json

@@ -1,3 +1,3 @@
 {
-  "USERID_SET": ["223796"]
+  "USERID_SET": ["223796", "223798", "151204"]
 }

src/index.ts

@@ -1,4 +1,4 @@
-import { Client } from "discord.js";
+import { Client, TextChannel } from "discord.js";
 import { IntentOptions } from "./config/IntentOptions";
 import * as dotenv from "dotenv";
 import { Query } from "./query";
@@ -13,9 +13,13 @@ dotenv.config();
 (async () => {
   const BOT = new Client({intents: IntentOptions});
 
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  let channel : TextChannel | undefined;
+
   await BOT.login(process.env.BOT_TOKEN);
   BOT.on("ready", () => {
     console.log("Bot is ready!");
+    channel = BOT.channels.cache.get(process.env.BOT_CHANNEL_ID!) as TextChannel;
   });
 
   const query : Query = await Query.init();
@@ -26,16 +30,19 @@ dotenv.config();
     for (const user of userQueue) {
       const newProblemSets = await getAcceptSet(user.Id);
       if (!user.equalSets(newProblemSets)) {
-        console.log("User " + user.Name + " has new accepted problems!");
+        channel?.send(`User ${user.Name} has new accepted problems!`);
         const diff = user.diffSets(newProblemSets);
         for (const problem of diff) {
-          console.log("New problem: " + query.getProblem(problem)!.title);
+          const newProblem = query.getProblem(problem);
+          channel?.send(
+            `New problem: ${newProblem!.title}\n` +
+            `Tags: ${newProblem!.tags}\n` +
+            `URL: ${process.env.CSES_URL}${newProblem!.url}`
+          );
         }
         user.updateAccept(diff);
       }
     }
     await new Promise(resolve => setTimeout(resolve, 1000 * 5));
   }
-
-
 })();